Development and application of Ni–M/sepiolite (M=Ce, Pr, and La) catalysts in biomass pyrolysis for syngas production
作者：
Gao, Rongyi;Zhang, Yiran;Xiong, Tao;Qin, Zhenhua;He, Yun;...
期刊：
Energy Reports ,2022年8:5957-5964 ISSN：2352-4847
通讯作者：
Li, Jianfen(whpulijfen@126.com)
作者机构：
[Li, Jianfen; Qin, Zhenhua; He, Yun; Xiong, Tao; Zhang, Yiran; Gao, Rongyi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Jianfen Li] S;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
关键词：
Ni catalysts;Catalytic activity;Lanthanum loading;Biomass pyrolysis;Syngas production;Sepiolite carrier
摘要：
The proposed Ni–M/sepiolite (SEP) catalysts (M=Ce, Pr, and La) were developed to improve syngas production in biomass pyrolysis. A homogeneous precipitation method was used to synthesize these catalysts. These catalysts were characterized using X-ray fluorescence, X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray spectroscopy, and the Brunauer–Emmett–Teller method. A series of experiments were conducted to investigate the effects of catalyst types and M loading on gas composition and content in gas production. Simultaneously, the catalyst's stability was tested. The experiments showed that the synthesized Ni–La/SEP catalyst with 12 wt% La and 20 wt% Ni loading had a high catalytic activity of improving gas quality compared with Ni–Pr/SEP, Ni–Ce/SEP, and Ni/SEP, giving a high hydrogen yield (41.18 vol.%) and CO yield (32.23 vol.%). © 2022 The Authors
语种：
英文
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Solidified floating organic drop microextraction in tandem with syringe membrane miro-solid phase extraction for sequential detection of thallium (III) and thallium (I) by graphite furnace atomic absorption spectrometry
作者：
Yan, Juntao;Zhang, Chenghao;Wang, Chunlei;Lu, Dengbo;Chen, Shizhong
期刊：
Arabian Journal of Chemistry ,2022年15(12):104335 ISSN：1878-5352
通讯作者：
Chen, SZ
作者机构：
[Wang, Chunlei; Yan, Juntao; Zhang, Chenghao] Wuhan Polytech Univ, Coll Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Chen, Shizhong; Chen, SZ; Lu, Dengbo] Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Chen, SZ ] W;Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China.
关键词：
Solidified floating organic drop microextraction;Syringe membrane micro-solid phase extraction;Thallium speciation;Graphite furnace atomic absorption spectrometry;Water samples
摘要：
In the present study, a novel method based on solidified floating organic drop microextraction (SFODME) combined with syringe membrane micro-solid phase extraction (SMMSPE) was proposed for the sequential separation and enrichment of Tl(III) and Tl(I) followed by graphite furnace atomic absorption spectrometry detection. In SFODME, Tl(III) can react with 1-(2-Pyridylazo)-2-naphthol at pH 8.0 to form the complexes which can be extracted into an organic drop, while Tl(I) was remained in the solution. In SMMSPE, flexible TiO2@SiO2 nanofiber membrane was used as the sorbent for the enrichment of Tl(I) in the sample solution after the separation of Tl(III). This method did not require tedious pre-oxidation/pre-reduction operation and time-consuming centrifugation/filtration steps, which may cause sample contamination and analysis errors. Main parameters influencing the separation and enrichment of the target species were studied. Under the selected conditions, the detection limits for this method were 1.7 and 2.6 ng/L for Tl(III) and Tl(I) with relative standard deviations of 6.1 % and 5.2 %, respectively. This method was successfully used for the determination of the target species in environmental water samples and two certified reference materials. The determined values were in good agreement with the certified values. © 2022 The Authors
语种：
英文
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A solar-light driven photocatalytic fuel cell for efficient electricity generation and organic wastewater degradation
作者：
Li, Bolin;He, Yun;Xiao, Menghan;Zhang, Yiran;Wang, Zhen;...
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects ,2022年642:128205 ISSN：0927-7757
通讯作者：
Li, Jianfen(whpulijfen@126.com)
作者机构：
[Li, Jianfen; Xiao, Menghan; Qin, Zhenhua; He, Yun; Wang, Zhen; Chai, Bo; Zhang, Yiran; Yan, Juntao; Li, Bolin] Wuhan Polytech Univ, Coll Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.;[Li, Ji; Cao, Zhong] China Three Gorges Corp, Beijing, Peoples R China.
通讯机构：
[Jianfen Li] C;College of Chemistry and environmental engineering, Wuhan Polytechnic University, Wuhan 430023, Hubei, China
关键词：
Heterojunction;Organic waste degradation;Photocatalytic fuel cell;Power output
摘要：
Photocatalytic fuel cell as a potential green technology has been widely reported. In this work, MoS2/TiO2 and MoS2/Ni foam were successfully synthesized and acted as photoanode and cathode, respectively, the as-prepared photocatalytic fuel cell. After MoS2 is modified, the modified composite photoanode obtains higher light-harvesting, electron-hole separation efficiency and electron transport efficiency than pure TiO2 nanorod photoanode. The result indicated that the photocurrent of the MT-3 photoanode is 1.76 times higher than that of pure TiO2. The enhanced performance is attributed to the formation of heterojunction between TiO2 and MoS2 in reducing the interface charge carrier recombination and improving the light-harvesting compared with bare TiO2. The highest value of open-circuit voltage (0.7 V), short-circuit current (1.04 mA •cm−2) and actual maximum power density (0.114 mW•cm−2) was obtained by the proposed MT-MN PFC. The degradation performance of the proposed PFC system was evaluated by decomposing the model organic pollutants. As the result indicates, the degradation efficiency was 69.16% when rhodamine B (20 ppm, pH=7) was used as the model organic waste. © 2022
语种：
英文
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Poly(phenylene oxide)-Based Anion Exchange Membranes Having Linear Cross-Linkers or Star Cross-Linkers
作者：
Han, Juanjuan;Zhang, Yangyang;Kang, Fei;Liu, Chifeng;Song, Wenfeng;...
期刊：
ACS Applied Energy Materials ,2022年5(9):11613-11623 ISSN：2574-0962
通讯作者：
Han, Juanjuan(jjhan@whu.edu.cn);Ren, Zhandong(renzhandong@126.com)
作者机构：
[Wang, Minhao; Liu, Chifeng; Zhang, Yangyang; Zhou, Xiaorong; Han, Juanjuan; Zheng, Xiumeng; Kang, Fei; Liu, Xia; Ren, Zhandong; Song, Wenfeng] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Zhuang, Lin; Hu, Meixue; Xiao, Li] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China.
通讯机构：
[Juanjuan Han; Zhandong Ren] S;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
关键词：
linear cross-linkers;star cross-linkers;micromorphology;anion exchange membrane;fuel cell
摘要：
Linear cross-linked and star cross-linked anion exchange membranes (AEMs) are reported in this work, namely, lcQPPO (linear cross-linked quaternized poly(2,4-dimethyl-1,4-phenylene oxide) (PPO)) and scDQPPO (star cross-linked quaternized PPO). Compared with original quarternized PPO (QPPO), cross-linked AEMs show a restrained swelling degree. But, due to the hindrance of a cross-linking polymer matrix, lcQPPO membranes show decreased ionic conductivity. For scDQPPO, its wide and connective ion channels are beneficial to the conduction of OH-, exhibiting increased ionic conductivity. Besides, the aggregated and cross-linked polymer networks in scDQPPO enhance the chemical stability and mechanical properties of the AEMs. Specifically, for scDQPPO-40, a high OH- conductivity of 100.7 mS cm-1 and a low swelling degree of 20.7% are achieved at 80 °C. The tensile strength and elongation at break of wet scDQPPO-40 at 25 °C are 16.7 MPa and 18.0%. After immersing in 1 M NaOH at 80 °C for 30 days, the loss of ionic conductivity and weight for scDQPPO-40 is 24.2 and 14.8%, with the degradation of tensile strength and elongation at break of 22.2% and 26.7%, respectively. On the basis of the membrane, a fuel cell performance of 0.577 W cm-2 is demonstrated at 60 °C, while, for QPPO-40 and lcQPPO-60, their fuel cell peak power densities are only 0.250 and 0.215 W cm-2. © 2022 American Chemical Society.
语种：
英文
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Role of particle fineness and reactive silicon-aluminum ratio in mechanical properties and microstructure of geopolymers
作者：
Xu, Xianqing;Bao, Shenxu* ;Zhang, Yimin;Luo, Yongpeng;Qin, Lei;...
期刊：
Construction and Building Materials ,2021年313:125483 ISSN：0950-0618
通讯作者：
Bao, Shenxu
作者机构：
[Xu, Xianqing; Bao, Shenxu; Zhang, Yimin; Qin, Lei; Luo, Yongpeng] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China.;[Bao, Shenxu; Zhang, Yimin] Hubei Key Lab Mineral Resources Proc & Environm, Wuhan 430070, Peoples R China.;[Zhang, Yimin] Wuhan Univ Sci & Technol, State Environm Protect Key Lab Mineral Met Resour, Wuhan 430081, Peoples R China.;[Li, Shefeng] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Bao, Shenxu] W;Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China.
关键词：
Vanadium-bearing shale residue;Silicon-aluminum ratio;Geopolymer;Mechanical properties;Alkali thermal activation
摘要：
The main two factors of the mechanical properties and structure of geopolymers including reactive silicon-aluminum ratios and particle fineness were investigated. Vanadium-bearing shale residue (VSR), fly ash (FA), and silica fume (SF) were subjected to alkali thermal activation (ATA) to increase the content of reactive silicon and aluminum, then a leaching experiment was carried out to quantify the content of active silica and aluminum in the raw materials, which indicated that the reactive silicon-aluminum ratios are well linearly related with those in the raw materials. High compressive strength (82 MPa at 28 days) geopolymers were prepared at ambient temperature curing of the three solid wastes after ATA, and the effect of FA fineness to geopolymers was also investigated during the preparation. As the FA content in the raw materials increases within a certain range, the compressive strength of the geopolymer is significantly enhanced, along with the main band is relevant to asymmetric stretching of Si-O-Si/Al has shifted towards a lower frequency, which is results from structural alteration of the Al-Si network. The appropriate reactive silicon-aluminum ratios accelerate the geopolymerization reaction process, which is conducive to the formation of the silicon-aluminum gel microstructure. The fineness of FA has a notable effect on the mechanical properties of geopolymers. It is interesting to found that the geopolymers with finer FA fineness have lower compressive strength, which can be explained by the looser structure and more pores due to the agglomeration of fine particles, resulting in difficult geopolymerization reactions. © 2021
语种：
英文
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Nano-RuW Composites with Low Loading as High-Efficiency Electrocatalysts for Hydrogen Evolution in Acidic and Alkaline Solutions
作者：
Tan, Lingjun;Cong, Ning;Chen, Hanruo;Zhai, Conghui;Han, Juanjuan;...
期刊：
ACS Applied Energy Materials ,2021年4(3):2348-2356 ISSN：2574-0962
通讯作者：
Ren, Zhandong(renzhandong@163.com);Zhu, Yuchan(zhuyuchan@163.com)
作者机构：
[Chen, Hanruo; Zhu, Yuchan; Tan, Lingjun; Zhou, Xiaorong; Cong, Ning; Zhai, Conghui; Han, Juanjuan; Fang, Hua; Ren, Zhandong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Zhandong Ren; Yuchan Zhu] S;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
关键词：
hydrogen evolution reaction;nano-RuW composite;electronic structure;surface morphology;acidic and alkaline solutions
摘要：
Electrolysis of water is an effective way to produce high-purity hydrogen. Also, it is of great significance to develop an efficient electrocatalyst for hydrogen evolution reaction (HER), which is suitable for both acidic and alkaline solutions. In this work, a series of nano-RuW composite electrodes with different proportions were prepared by high-vacuum magnetron sputtering with a metal Ru loading of 78 μg cm-2. Among them, both in acidic and alkaline solutions, the HER activity of a Ru88W12 electrode not only exceeds that of Ru but also exceeds that of Pt/C, which is rarely reported in the previous literature. The Ru88W12 electrode is composed of a number of small-sized nanoparticles arranged in sequence, which has improved the ECSA of the electrode. The ECSA of the Ru88W12 electrode is 3.2 times that of Ru. At the same time, when W is doped into a Ru cell, the cell volume increases and electrons are transferred from W to Ru metal, thereby changing the electronic structure of Ru. The change of the Ru valence electron structure and the increase of ECSA greatly improve the electrochemical activity of the electrode. The HER activities of nano-RuW composite electrodes are 6.5, 1.7, and 1.1 times those of Ru/C, Ru, and Pt/C electrodes in 0.5 M H2SO4 at -0.2 V. In 1.0 M KOH, the HER activities of nano-RuW composite electrodes are 3.6, 1.6, and 4.1 times those of Ru/C, Ru, and Pt/C electrodes. The Ru88W12 electrode has the most favorable reaction kinetics, with Tafel slopes of 40.8 and 59.1 mV dec-1 in acidic and alkaline solutions, respectively. These results demonstrate that the strategy of nano-RuW composite electrodes could open an avenue for designing non-Pt efficient electrocatalysts with high activity in both acidic and alkaline solutions. ©
语种：
英文
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Conductivity and Stability Properties of Anion Exchange Membranes: Cation Effect and Backbone Effect
作者：
Han, Juanjuan* ;Song, Wenfeng;Cheng, Xueqi;Cheng, Qiang;Zhang, Yangyang;...
期刊：
ChemSusChem ,2021年14(22):5021-5031 ISSN：1864-5631
通讯作者：
Han, Juanjuan;Ren, Zhandong
作者机构：
[Liu, Chifeng; Zhang, Yangyang; Zhou, Xiaorong; Han, Juanjuan; Ren, Zhandong; Cheng, Xueqi; Song, Wenfeng] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Cheng, Qiang] Peoples Liberat Army Air Force Early Warning Acad, Early Warning Simulat Training Ctr, Wuhan 430019, Peoples R China.;[Zhuang, Lin; Ning, Tianshu; Hu, Meixue; Xiao, Li] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China.
通讯机构：
[Han, JJ; Ren, ZD] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
anion exchange membrane;electrolytes;hydroxide conductivity;ionic conductivity;water uptake
摘要：
The rise of heterocycle cations, a new class of stable cations, has fueled faster growth of research interest in heterocycle cation-attached anion exchange membranes (AEMs). However, once cations are grafted onto backbones, the effect of backbones on properties of AEMs must also be taken into account. In order to comprehensively study the influence of cations effect and backbones effect on AEMs performance, a series of AEMs were prepared by grafting spacer cations, heterocycles cations, and aromatic cations onto brominated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO) or poly(vinylbenzyl chloride) (PVB) backbones, respectively. Spacer cation [trimethylamine (TMA), N,N-dimethylethylamine (DMEA)]-attached AEMs showed general ion transportation and stability behaviors, but exhibited high cationic reaction efficiency. Heterocycle cation [1-methylpyrrolidine (MPY), 1-methylpiperidine (MPrD)]-attached AEMs showed excellent chemical stability, but their ion conduction properties were unimpressive. Aromatic cation [1-methylimidazole (MeIm), N,N-dimethylaniline (DMAni)]-attached AEMs exhibited superior ionic conductivity, while their poor cations stabilities hindered the application of the membranes. Besides, it was found that PVB-based AEMs had excellent backbone stability, but BPPO-based AEMs exhibited higher OH− conductivity and cation stability than those of the same cations grafted PVB-based AEMs due to their higher water uptake (WU). For example, the ionic conductivities (ICs) of BPPO-TMA and PVB-TMA at 80 °C were 53.1 and 38.3 mS cm−1, and their WU was 152.3 and 95.1 %, respectively. After the stability test, the IC losses of BPPO-TMA and PVB-TMA were 21.4 and 32.2 %, respectively. The result demonstrated that the conductivity and stability properties of the AEMs could be enhanced by increasing the WU of the membranes. These findings allowed the matching of cations to the appropriate backbones and reasonable modification of the AEM structure. In addition, these results helped to fundamentally understand the influence of cation effect and backbone effect on AEM performance. © 2021 Wiley-VCH GmbH
语种：
英文
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Synthesis and evaluation of acetylferulic paeonol ester and ferulic paeonol ester as potential antioxidants to inhibit fish oil oxidation
作者：
Yu, Lijuan;Wang, Yang;Wen, Hua;Jiang, Ming;Wu, Fan;...
期刊：
Food Chemistry ,2021年365:130384 ISSN：0308-8146
通讯作者：
Wen, Hua(wenhua.hb@163.com)
作者机构：
[Yu, Lijuan; Wu, Fan; Tian, Juan; Wen, Hua; Jiang, Ming] Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Fish Nutr & Feed Div, Wuhan 430223, Peoples R China.;[Wang, Yang] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Hua Wen] F;Fish Nutrition and Feed Division, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
关键词：
Antioxidant;Fatty acid;Ferulic acid;Fish oil;Paeonol;Radical scavenging
摘要：
Acetylferulic paeonol ester (APE) and ferulic paeonol ester (FPE) were synthesized, and their structures were confirmed by NMR, mass spectra, IR and UV–vis data. The antioxidant properties of the synthesized compounds were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and [(2-azino-bis (3-ethylbenzthiazoline)-6 -sulfonic acid] (ABTS) assay as well as the production of oxidation products (peroxides, conjugated dienes, thiobarbituric acid-reactive substances, free fatty acids and total aldehydes) in an elevated temperature (60 °C) storage trial of fish oil extracted from anchovy. Furthermore, the changes in fatty acid composition were monitored by gas chromatography-mass spectrometry. The results showed that APE was more effective in restraining fish oil oxidation compared to FPE, ferulic acid, paeonol and the commercial antioxidant-butylated hydroxytoluene (BHT). This study demonstrated molecular combinations obtained by covalent bonding two antioxidant active molecules can result in novel compounds with enhanced antioxidant activities. © 2021 Elsevier Ltd
语种：
英文
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Electro-deposition synthesis of tube-like collagen–chitosan hydrogels and their biological performance
作者：
Li, Ping;He, Lang;Liu, Xueling;Fan, Shengxuan;Yuan, Yifan;...
期刊：
BIOMEDICAL MATERIALS ,2021年16(3):035019 ISSN：1748-6041
通讯作者：
Wang, Haibo
作者机构：
[Li, Ping] Wuhan Polytech Univ, Sch Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China.;[Yuan, Yifan; Liu, Xueling; Li, Sheng; Fan, Shengxuan; Wang, Haibo; He, Lang; Zhang, Juntao] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, Haibo] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Biological characterization;Chitosan;Collagen;Electro-deposition;Tube-like hydrogel
摘要：
Electro-deposition is a smart, safe and efficient method for biomaterial manufacturing. Collagen, a functional protein with excellent biocompatibility and biosafety, is a promising candidate for tissue engineering and biomedical applications. However, there are few reports on electro-deposition of biomaterials using collagen without electrically or magnetically active nanoparticles. In this study, electro-deposition was employed to swiftly fabricate tube-like collagen–chitosan hydrogels in a mild environment. Fourier transform infrared spectroscopy was employed to analyze the ingredients of the tube-like hydrogels. The result showed that the hydrogels contained both collagen and chitosan. The distribution and content of collagen in the hydrogels was further measured by hematoxylin–eosin staining and hydroxyproline titration. Collagen was distributed homogeneously and its content was related to the initial collagen:chitosan ratio. The tension resistance of the composite gels and the thermal stability of collagen in the composites were obviously enhanced by the chitosan doping. Meanwhile, the tube-like hydrogels retained a good ability to promote cell proliferation of collagen. This method offers a convenient approach to the design and fabrication of collagen-based materials, which could effectively retain the bioactivity and biosafety of collagen and furnish a new way to enhance the stability of collagen and the tensile strength of collagen-based materials. © 2021 IOP Publishing Ltd
语种：
英文
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Extraction and modification of hemicellulose from lignocellulosic biomass: A review
作者：
Lu, Yuchan;He, Qiao;Fan, Guozhi* ;Cheng, Qunpeng;Song, Guangsen
期刊：
GREEN PROCESSING AND SYNTHESIS ,2021年10(1):779-804 ISSN：2191-9542
通讯作者：
Fan, Guozhi
作者机构：
[Cheng, Qunpeng; Lu, Yuchan; Song, Guangsen; Fan, Guozhi; He, Qiao] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Fan, Guozhi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
lignocellulosic biomass;hemicellulose;extraction;modification
摘要：
Hemicellulose is a carbohydrate biopolymer second only to cellulose, which is rich and has a broad application prospect. The limitation of high-value utilization of hemicellulose has been a long-standing challenge due to its complex and diversified structure. The extraction and subsequent modification of hemicellulose from lignocellulosic biomass represent a promising pathway toward this goal. Herein, the extraction processes including physical pretreatment, chemical pretreatment, and combined pretreatment for separating hemicellulose from lignocellulosic biomass were introduced, and the advantages and disadvantages of various extraction procedures were also described. The chemical modification of hemicellulose such as etherification, esterification, grafting, and cross-linking modification was reviewed in detail. The separation and modification of hemicellulose in the future are prospected based on the earlier studies. © 2021 Yuchan Lu et al., published by De Gruyter.
语种：
英文
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Relationship between contact size and static friction: An approach for rigid crystalline surfaces
作者：
Chen, Hao;Gao, Xinlei*
期刊：
摩擦(英文) ,2021年9(3):502-512 ISSN：2223-7690
通讯作者：
Gao, Xinlei
作者机构：
[Gao, Xinlei; Chen, Hao] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Gao, Xinlei] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
static friction;contact size;numeric simulation;rigid body
摘要：
Relationship between contact size (A) and static friction (f) has been studied for rigid crystalline systems. We built a series of systems with two identical surfaces but different orientations and investigated the effects of the size and shape of the contact area on static friction. In these systems, there are numerous nontrivial commensurate contacts. Our results confirmed that the relationship between A and f was determined by both commensurability and shape of the contact. For commensurate contacts, f ∝ A independent of the shape. For incommensurate contacts, generally f ∝ A0 for regular shapes or f ∝ A1/4 for irregular shapes; however, in very few cases of regular shapes, f ∝ A1/2. Moreover, in above systems, commensurability of a contact can be easily changed by a perturbation of the misfit angle. Therefore, if the perturbation caused by the lateral force and the deformation of the surface are considered (as is the case in real systems), further research is necessary. © 2019, The Author(s).
语种：
英文
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Preparation of Hydrogen-rich Gas by Catalytic Pyrolysis of Straw-plastic Mixture with Nickel-based Honeycomb Cinder
作者：
Li, Zeshan;Zhang, Yiran;Xiong, Tao;Li, Bolin;Xiao, Menghan;...
期刊：
BIORESOURCES ,2021年16(1):223-235 ISSN：1930-2126
通讯作者：
Li, Jianfen
作者机构：
[Zhu, Yuan; Li, Jianfen; Xu, Xianzhou; Xiao, Menghan; Hu, Rui; Xiong, Tao; Zhang, Yiran; Li, Bolin; Li, Zeshan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Li, Jianfen] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Catalytic pyrolysis;Combustible gas;Ni/HC;Plastic (PE);Soybean straw
摘要：
Nickel catalyst supported on honeycomb cinder (Ni/HC) was prepared by a homogeneous precipitation method. The catalyst was applied to produce hydrogen-rich combustible gas by catalytic pyrolysis of soybean straw and plastic (PE) mixture. The straw and plastic materials were analyzed by elemental analysis and industrial analysis. The support and catalyst were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 adsorption-desorption isotherm (BET). The analysis showed that NiO was well loaded on the surface of honeycomb coal slag carrier. The effects of Ni loading, pyrolysis temperature, holding time, and calcination temperature on the experimental results were studied. The results showed that the preparation of the catalyst was feasible and that it had a good catalytic effect. When Ni loading was 15 wt.%, catalytic pyrolysis temperature was 700 °C, holding time was 20 min, and calcination temperature of catalyst was 400 °C, H2 concentration increased from 20.6 to 52.8 vol.%, and while H2 yield was 302 mL/g, CH4 concentration decreased from 51.1 to 22.6 Vol.% and CO concentration increased from 10.8 to 17.8 vol.%. After the catalyst was regenerated 6 times, the H2 concentration still reached 40 vol.% and the combustible gas concentration was still above 80 vol.%. The catalyst still had good catalytic activity. © 2021, North Carolina State University. All rights reserved.
语种：
英文
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Removal of heavy metals and dyes by clay-based adsorbents: From natural clays to 1D and 2D nano-composites
作者：
Zhang, Tingting;Wang, Wei;Zhao, Yunliang* ;Bai, Haoyu;Wen, Tong;...
期刊：
Chemical Engineering Journal ,2021年420:127574 ISSN：1385-8947
通讯作者：
Zhao, Yunliang
作者机构：
[Song, Guangsen; Zhang, Tingting] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.;[Wang, Wei; Kang, Shichang; Zhao, Yunliang; Song, Shaoxian; Wen, Tong; Bai, Haoyu] Wuhan Univ Technol, Sch Resources & Environm Engn, Luoshi Rd 122, Wuhan 430070, Peoples R China.;[Komarneni, Sridhar] Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA.;[Komarneni, Sridhar] Penn State Univ, Energy & Environm Lab 204, Mat Res Inst, University Pk, PA 16802 USA.
通讯机构：
[Zhao, Yunliang] W;Wuhan Univ Technol, Sch Resources & Environm Engn, Luoshi Rd 122, Wuhan 430070, Peoples R China.
关键词：
1D clay nanotubes;2D clay nanosheets;Clay-based adsorbents;Dyes;Heavy metals;Removal
摘要：
Natural and synthetic clays have been used as adsorbents for removal of heavy metals and dyes from aqueous solution for many decades. In the last decade, exfoliating the natural clays to low dimensional nanosheets or nanotubes for preparation of multifunctional clay-based adsorbents has attracted considerable attention. In this review, we have summarized the removal of heavy metals and dyes by clay-based adsorbents, from natural clays to 1D clay nanotubes and 2D clay nanosheets. Firstly, the structural and adsorption performance of various natural clays (montmorillonite/bentonite/smectite, kaolinite, illite, sepiolite, palygorskite/attapulgite, halloysite) are presented. Then the adsorption of dyes and heavy metals onto modified clays including thermally treated clays, acid-washed clays, inorganic pillared clays and organic modified clays are discussed. Next, we have introduced the novel nano-clay based adsorbents with low dimensional morphologies (2D nanosheets, 1D nanotubes, 1D nanorods and clay-supported nanoparticles). The clay adsorbents with exfoliated nanosheets or nanotubes show dramatically improved performance because of the fully exposed reactive sites and very high specific surface area. More importantly, the nanosheets and nanotubes can be readily composited with coupling agents or functional polymers to prepare multifunctional adsorbents. In addition, the adsorption behaviors of clay-based adsorbents along with factors affecting adsorption, adsorption mechanisms and regeneration of adsorbents have been discussed. Inspired by the natural and modified clays, future suggestions in designing novel adsorbents for various applications have also been suggested. © 2020 Elsevier B.V.
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英文
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Facile preparation of MIL-88B-Fe metal–organic framework with high peroxidase-like activity for colorimetric detection of hydrogen peroxide in milk and beer
作者：
Fu, Manjun;Chai, Bo* ;Yan, Juntao;Wang, Chunlei;Fan, Guozhi;...
期刊：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING ,2021年127(12) ISSN：0947-8396
通讯作者：
Chai, Bo;Xu, Fang
作者机构：
[Wang, Chunlei; Song, Guangsen; Chai, Bo; Xu, Fang; Fu, Manjun; Yan, Juntao; Fan, Guozhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Chai, B; Xu, F] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Colorimetric detection;Hydrogen peroxide;MIL-88B-Fe MOF;Peroxidase-like activity
摘要：
Hydrogen peroxide (H2O2) was widely applied as the bactericide and bleach agent in food industry due to its strong oxidation, whose residue had also posed a hazard to public health at the same time. Therefore, it was indispensable to establish a simple, highly effective and accurate method for the detection of H2O2 in foods. Herein, the MIL-88B-Fe metal–organic framework (MOF) was prepared by a facile solvothermal process and utilized as the peroxidase mimic for H2O2 detection. The resultant MIL-88B-Fe MOF exhibited an excellent peroxidase mimetic activity to effectively catalyse the oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB) in the presence of H2O2, generating a blue coloured product. Under the optimal testing conditions, the linear absorbance response is well correlated with the H2O2 concentration ranging from 10 to 100μM with a detection limit of 0.60μM. The catalytic kinetic assay suggested that the MIL-88B-Fe MOF possessed the higher affinity towards both the substrate TMB and H2O2 than horseradish peroxidase. Moreover, the MIL-88B-Fe MOF also displayed a high selectivity and anti-interference performance towards H2O2 detection. In addition, the peroxidase mimetic catalytic oxidation TMB mechanism over the MIL-88B-Fe MOF was clarified by the photoluminescence test. Benefitting from the sensitive response and good anti-interference capacity, this method was applied in real milk and beer samples for H2O2 detection and showed a favourable reproducibility and feasibility. These results indicated that the proposed method based on MIL-88B-Fe as peroxidase mimic might be a promising candidate for H2O2 detection in food field. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
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英文
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Determination of Mn(II) and Mn(VII) in beverage samples using magnetic dispersive micro-solid phase extraction coupled with solidified floating organic drop microextraction followed by graphite furnace atomic absorption spectrometry
作者：
Chen, Shizhong;Yan, Juntao;Liu, Yuxiu;Wang, Chunlei;Lu, Dengbo
期刊：
Food Chemistry ,2021年359:129958 ISSN：0308-8146
通讯作者：
Chen, Shizhong(chenshizhong62@163.com)
作者机构：
[Chen, Shizhong; Lu, Dengbo] Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Peoples R China.;[Wang, Chunlei; Yan, Juntao; Liu, Yuxiu] Wuhan Polytech Univ, Coll Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Shizhong Chen] C;College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
关键词：
1-phenyl-3-methyl-4-benzoyl-5-pyrazone;Beverage samples;Magnetic ZnFe(2)O(4) nanotubes;Magnetic dispersive micro-solid phase extraction;Mn(II)/Mn(VII);Solidified floating organic drop microextraction
摘要：
Magnetic dispersive micro-solid phase extraction (MDMSPE) was coupled with solidified floating organic drop microextraction (SFODME) for direct separation and preconcentration of Mn(II) and Mn(VII) before graphite furnace atomic absorption spectrometry determination. MDMSPE involved use of magnetic ZnFe2O4 nanotubes for adsorbing Mn(VII). Sorbent was isolated from aqueous phase by an external magnet. Mn(II) in upper solution from MDMSPE was further enriched by SFODME. This method avoids tedious pre-oxidation/pre-reduction operation and time-consuming centrifugation/filtration step. An enrichment factor of 200-fold was obtained. Detection limits of this method were 0.005 and 0.007 ng mL−1 for Mn(II) and Mn(VII) with relative standard deviations of 4.0% and 4.8% (n = 9), respectively. This method was successfully used for detection of Mn(II) and Mn(VII) in tap water, ice tea, energy drink, mineral water, sprite drink and carbonated drink. A certified reference material of water sample was analyzed with satisfactory results. Recoveries of spike experiments ranged from 92.5 to 106%. © 2021
语种：
英文
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Nano PdFe Alloy Assembled Film as a Highly Efficient Electrocatalyst toward Hydrogen Evolution in Both Acid and Alkaline Solutions
作者：
Chen, Hanruo;Yuan, Min;Zhai, Conghui;Tan, Lingjun;Cong, Ning;...
期刊：
ACS Applied Energy Materials ,2020年3(9):8969-8977 ISSN：2574-0962
通讯作者：
Ren, Zhandong;Zhu, Yuchan
作者机构：
[Chen, Hanruo; Yuan, Min; Zhu, Yuchan; Ren, Zhandong; Zhu, YC; Tan, Lingjun; Zhou, Xiaorong; Zhai, Conghui; Cong, Ning; Han, Juanjuan; Fang, Hua] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Ren, ZD; Zhu, YC] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
hydrogen evolution reaction;PdFe alloy;nanoassembled film;electronic structure;surface morphology
摘要：
A series of nano PdFe alloy film electrodes with different ratios were prepared by high-vacuum magnetron sputtering under the action of high-strength magnetic field. Among them, the Pd3Fe alloy film electrode possesses the best hydrogen evolution activity, which significantly changes the properties of hydrogen adsorption (Had) and absorption (Habs) of Pd. Pd3Fe is a nanoassembled film, which consists of many tiny nanosheets connected together. The electrochemical surface area of Pd3Fe electrode is 13 and 7 times that of the Pd/C and Pd electrode, respectively. At the same time, Pd and Fe had formed an alloy structure. The (111) plane of the Pd3Fe alloy is an obvious positive shift, and the crystal cell is compressed. The electron is transferred from Fe to Pd through XPS analysis, which has proven the electronic relationship between Pd and Fe. DFT calculations have also shown that the ΔGH* of the Pd3Fe surface is significantly reduced compared to that of Pd. Reducing the desorption energy of H on the Pd surface is beneficial to improve the electrocatalytic performance. It is noteworthy that the HER activity of Pd3Fe electrode has exceeded that of Pd/C, Pd, and Pt/C in both 0.5 M H2SO4 and 1.0 M KOH. The HER activity of Pd3Fe electrode is 20, 1.9, and 3.1 times that of Pd/C, Pd, and Pt/C in 1.0 M KOH at -0.2 V. In 0.5 M H2SO4, the HER activity of the Pd3Fe electrode is 6, 3.5, and 1.6 times that of Pd/C, Pd, and Pt/C. The Pd3Fe film electrode has the most favorable reaction kinetics, with Tafel slopes of 44.7 and 38.7 mV dec-1 in acidic and alkaline solutions, respectively. The values of the Tafel slope indicate that the mechanism of HER on the Pd3Fe film electrode is consistent with the Volmer-Heyrovsky pathway, and the Heyrovsky step is a rate-determining step. In this paper, the Pd alloy electrode has exceeded the commercial Pt/C in both acidic and alkaline solutions, which makes it more practical. Copyright © 2020 American Chemical Society.
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英文
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Amorphization enables highly efficient anaerobic thiamphenicol reduction by zero-valent iron
作者：
Shen, Wenjuan;Wang, Xiaoming;Jia, Falong* ;Tong, Zhe;Sun, Hongwei;...
期刊：
Applied Catalysis B: Environmental ,2020年264:118550 ISSN：0926-3373
通讯作者：
Jia, Falong;Ai, Zhihui;Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Jia, FL; Ai, ZH; Zhang, LZ; Sun, Hongwei; Wang, Xiaobing; Shen, Wenjuan; Jia, Falong; Tong, Zhe; Song, Fahui; Ai, Zhihui] Cent China Normal Univ, Inst Environm & Appl Chem, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Peoples R China.;[Wang, Xiaoming] Huazhong Agr Univ, Minist Agr, Coll Resources & Environm, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Peoples R China.;[Chai, Bo; Shen, Wenjuan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Jia, FL; Ai, ZH; Zhang, LZ] C;Cent China Normal Univ, Inst Environm & Appl Chem, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Peoples R China.
关键词：
Amorphous zero-valent iron;Anaerobic reduction;Ethylenediamine;Formation mechanism;Thiamphenicol
摘要：
As a new member of zero-valent iron (ZVI) family, amorphous zero-valent iron microspheres (A-mZVI) were very promising for the aerobic disinfection of Escherichia coli. However, their formation and anaerobic reduction performance are still unknown. In this study, we investigated A-mZVI's formation mechanism and checked its anaerobic reduction ability with using thiamphenicol as a model contaminant, and found that the presence of ethylenediamine decreased the reducing capacity of NaBH4, the Fe(II) reduction rate, and the energy for crystal growth, and thus favored the formation of metastable amorphous structure. Moreover, this amorphous structural nature of A-mZVI endowed it with an apparent thiamphenicol reduction rate constant as high as 4.8 × 10−2 min−1, 7.9 times that (6.1 × 10−3 min−1) of crystalline zero-valent iron microspheres (C-mZVI). Further investigation revealed that the enhanced anaerobic thiamphenicol reduction of A-mZVI was strongly ascribed to its promoted electron donating ability arisen from the amorphization process. © 2019 Elsevier B.V.
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英文
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Ether-Free Polybenzimidazole Bearing Pendant Imidazolium Groups for Alkaline Anion Exchange Membrane Fuel Cells Application
作者：
Lin, Bencai* ;Xu, Fei;Su, Yue;Han, Juanjuan;Zhu, Zhijie;...
期刊：
ACS Applied Energy Materials ,2020年3(1):1089-1098 ISSN：2574-0962
通讯作者：
Lin, Bencai;Ding, Jianning
作者机构：
[Lin, BC; Ding, Jianning; Ren, Yurong; Chu, Fuqiang; Su, Yue; Zhu, Zhijie; Lin, Bencai; Xu, Fei] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Sch Mat Sci & Engn, Changzhou 213164, Jiangsu, Peoples R China.;[Han, Juanjuan] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Zhu, Liang] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
通讯机构：
[Lin, BC; Ding, JN] C;Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Sch Mat Sci & Engn, Changzhou 213164, Jiangsu, Peoples R China.
关键词：
anion exchange membrane;polybenzimidazole;fuel cell;ionic conductivity;alkaline stability
摘要：
A series of ether-bond free polybenzimidazole (PBI) bearing pendant imidazolium groups (HIm-PBI and PIm-PBI) are synthesized via a low cost preparation process under mild reaction conditions. HIm-PBI and PIm-PBI show excellent membrane forming property, and flexible HIm-PBI- and PIm-PBI-based membranes are prepared by casting the polymer/dimethyl sulfoxide solution. For a comparison, ether-bond free PBI without pendant imidazolium groups (I-PBI) was synthesized and characterized in detail, and I-PBI shows poor membrane forming ability under the same conditions. HIm-PBI-based anion exchange membranes (AEMs) with the longer pendant alkyl side chain exhibit larger ionic clusters than that of PIm-PBI with the shorter one. Both HIm-PBI- and PIm-PBI-based AEMs show excellent alkaline stability, and the HIm-PBI-based AEMs show a high conductivity of 63.4 mS cm-1 at 80 °C, while the value for PIm-PBI-based AEMs is 57.6 mS cm-1. The H2/O2 single-cell assembled with HIm-PBI shows a maximum power density of 444.5 mW cm-2 at 60 °C, which is higher than the one with PIm-PBI (337.5 mW cm-2). A feasible approach to the synthesis of ether-bond free PBI-based AEMs is proposed, and these results indicate that the ether-bond free PBI-based AEMs are promising materials for fuel cell applications. Copyright © 2019 American Chemical Society.
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英文
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Visible light promoted Fe3S4 Fenton oxidation of atrazine
作者：
Shi, Yanbiao;Wang, Xiaobing;Liu, Xiufan;Ling, Cancan;Shen, Wenjuan;...
期刊：
Applied Catalysis B: Environmental ,2020年277:119229 ISSN：0926-3373
通讯作者：
Zhang, Lizhi
作者机构：
[Ling, Cancan; Zhang, Lizhi; Liu, Xiufan; Shi, Yanbiao; Wang, Xiaobing; Shen, Wenjuan] Cent China Normal Univ, Inst Environm & Appl Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China.;[Shen, Wenjuan] Wuhan Polytech Univ, Coll Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Inst Environm & Appl Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China.
关键词：
Atrazine degradation;Heterogeneous Fenton reaction;Reusability;Surface iron redox cycle;Visible light irradiation
摘要：
We demonstrate that visible light irradiation can promote Fe3S4 Fenton oxidation of atrazine. The visible light irradiation could increase the atrazine Fenton degradation rate by 4.9 times. The enhanced atrazine degradation activity under visible light was attributed to the higher surficial Fe(II)/Fe(III) ratio of Fe3S4 and the efficient surface iron redox cycle triggered by visible light. Experimental results revealed that the operando formation of FeOOH on the Fe3S4 surface blocked the iron redox cycle and inhibited the H2O2 decomposition, accounting for the largely decreased Fenton activity of Fe3S4 in dark, while these problems were successfully solved by the introduction of visible light irradiation, which excite Fe3S4 to produce abundant photo-generated electrons and [rad]O2− for efficient regeneration of active Fe(II) species of Fe3S4 and in-situ formed FeOOH. © 2020 Elsevier B.V.
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英文
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Kinetic studies of trichloroethylene catalytic combustion over Cr/ZSM-5/PSSF composite
作者：
Zhang, Yong;Zhang, Huiping;Yan, Ying*
期刊：
Separation and Purification Technology ,2020年251:116827 ISSN：1383-5866
通讯作者：
Yan, Ying
作者机构：
[Zhang, Yong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Zhang, Yong; Zhang, Huiping; Yan, Ying] South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Green Chem Prod Technol, Guangzhou 510640, Peoples R China.
通讯机构：
[Yan, Ying] S;South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Green Chem Prod Technol, Guangzhou 510640, Peoples R China.
关键词：
Catalytic combustion;Trichloroethylene;ZSM-5 membrane catalyst;Kinetic model
摘要：
The Cr modified ZSM-5 zeolite catalysts deposited on paper-like sintered stainless steel fibers (Cr/ZSM-5/PSSF) were synthesized via the papermaking/sintering technology, secondary growth process as well as metallic organic chemical vapor deposition method. Catalytic reaction kinetics analysis of trichloroethylene (TCE) over the fixed-bed reactor based on Cr modified ZSM-5 composite were performed using the Mars-van Krevelen and power-rate law kinetic model. The analysis results indicate that the Mars-van Krevelen kinetic model could fit well the catalytic kinetic data. The catalytic reaction for TCE combustion over Cr/ZSM-5/PSSF composite is the interaction between the oxygen-rich centers and TCE molecule based on the oxidation-reduction mechanism. The reaction activation energy for the surface oxidation is 64.57 kJ/mol and that of surface reduction reaction is 122.25 kJ/mol. © 2020 Elsevier B.V.
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英文
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