作者机构：
[Quan, Fengjiao; Xu, Pengfei; Chen, Xiaolan; Shen, Wenjuan; He, Yun; Li, Jianfen] College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[Jia, Falong] College of Chemistry, Central China Normal University, Wuhan, 430079, China;[Zhan, Guangming] School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
通讯机构：
[Falong Jia] C;College of Chemistry, Central China Normal University, Wuhan 430079, China
摘要：
Two Ln-based Metal-Organic Frameworks (MOFs), Eu-BCTC and Tb-BCTC, were synthesized using the ligand [9,9 '-bicarbazole]-3,3 ',6,6 '-tetracarboxylic acid (H4BCTC) via a solvothermal method. They emit green or red light, respectively. By adjusting the molar ratio of Eu3+/Tb3+ of LMOFs, a single-phase white light emitter, Eu0.075Tb0.925-BCTC, was successfully synthesized. This compound exhibits an ideal CIE coordinate of (0.33, 0.33), internal quantum yield (IQY) at 8.37 % and a color temperature of 5623 K. Moreover, it has excellent performance in detecting Fe3+, Cr2O72- and CrO42- , with limit of detections (LODs) at 7.403 x 10-5 M, 1.487 x 10-5 M and 3.053 x 10-5 M, respectively. This advancement marks a significant contribution to the field of MOF-based white-light-emitting phosphors and fluorescence probes.
作者机构：
[Zhou, Yu; Wang, Nan; Zhu, Lihua] College of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;College of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, China;College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[Huang, Shuangshuang] School of Physics and Technology, Center for Electron Microscopy, Wuhan University, Wuhan, China;[Wang, Xiaobo] College of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, China<&wdkj&>College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
[Xiaobo Wang; Lihua Zhu] C;College of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China<&wdkj&>College of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi 435003, China<&wdkj&>College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
作者：
Heng Yang;Yang Xia;Jie Guo;Lu Xue;Sónia A.C. Carabineiro;...
期刊：
Applied Catalysis B: Environment and Energy,2025年362:124700 ISSN：0926-3373
通讯作者：
Lili Wen
作者机构：
[Heng Yang; Jie Guo; Lu Xue; Lili Wen; Shuxin Ouyang] Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education;College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.;College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China.;[Yang Xia] Key Laboratory of Green Chemical Engineering Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430072, P. R. China;[Sónia A.C. Carabineiro] LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
通讯机构：
[Lili Wen] E;Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education;College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
关键词：
Phosphorus metabolism;Phosphorus resources;Phosphorus slag (PS);Returning PS to fields
摘要：
Comprehensive utilization of phosphorus slag (PS) is crucial to achieve sustainable resource utilization. However, only few systematic studies have been conducted on returning PS to fields. In this study, effects of PS on the soil microenvironment and planting were investigated in detail using simulations of returning PS to fields. The results showed that returning PS to fields would not cause heavy metal pollution in the soil. At the end of the experiment, the soil physicochemical properties revealed that PS addition (5% and 20% mass ratio) resulted in a slight increase in soil pH, which indicated that PS amendment decreased the acidity of the soil sample. Compared with a control sample, the available nitrogen decreased (about 10.64% to 25.53%) in the amended soil, and which was positively related to the added content of PS. Conversely, the available phosphorus content increased (from 87.64% to 192.43%) with the increase of PS content added to soil. Moreover, the PS addition to the soil altered the microbial composition. The top six genera in soil microbial community were Bryobacter (1.59%), Geobacter (1.54%), Haliangium (1.51%), Nitrospira (1.19%), Candidatus Udaeobacter (1.14%), and Sphingomonas (1.12%). The activity of urease, phosphatase, and cellulase increased, and the abundance of functional genes related to nitrogen (ureC, amoB, nirS, and nirK) and phosphorus (ppx, pqqC, and phoD) also increased after PS addition. In a pot experiment, the addition of PS to soil promoted the growth of crops. In summary, proper addition of PS to agricultural soil is beneficial for both the soil environment and the growth of crops.
作者机构：
[Zhang, Junjie; Song, Hao; Yang, Haiping; Chen, Hanping; Shao, Jingai; Yu, Jie; Jiang, Hao; Fan, Tingting] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Hubei Province, Peoples R China.;[Zhang, Junjie; Chen, Hanping; Shao, Jingai; Jiang, Hao; Fan, Tingting] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Dept New Energy Sci & Engn, Wuhan 430074, Hubei Province, Peoples R China.;[Li, Jianfen] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.;[Agblevor, Foster] Utah State Univ, USTAR Bioenergy Ctr, Dept Biol Engn, Logan, UT 84341 USA.;[Zhang, Junjie; Shao, Jingai; Zhang, JJ; Shao, JA] 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China.
通讯机构：
[Zhang, JJ; Shao, JA ] 1;1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China.
关键词：
Metal oxide;Molecular dynamics simulation;Monoaromatic hydrocarbons;Volatile desulfurization;Waste tire pyrolysis
摘要：
Pyrolysis can effectively convert waste tires into high-value products. However, the sulfur-containing compounds in pyrolysis oil and gas would significantly reduce the environmental and economic feasibility of this technology. Here, the desulfurization and upgrade of waste tire pyrolysis oil and gas were performed by adding different metal oxides (Fe(2)O(3), CuO, and CaO). Results showed that Fe(2)O(3) exhibited the highest removal efficiency of 87.7% for the sulfur-containing gas at 600°C with an outstanding removal efficiency of 99.5% for H(2)S. CuO and CaO were slightly inferior to Fe(2)O(3), with desulfurization efficiencies of 75.9% and 45.2% in the gas when added at 5%. Fe(2)O(3) also demonstrated a notable efficacy in eliminating benzothiophene, the most abundant sulfur compound in pyrolysis oil, with a removal efficiency of 78.1%. Molecular dynamics simulations and experiments showed that the desulfurization mechanism of Fe(2)O(3) involved the bonding of Fe-S, the breakage of C-S, dehydrogenation and oxygen migration process, which promoted the conversion of Fe(2)O(3) to FeO, FeS and Fe(2)(SO(4))(3). Meanwhile, Fe(2)O(3) enhanced the cyclization and dehydrogenation reaction, facilitating the upgrade of oil and gas (monocyclic aromatics to 57.4% and H(2) to 22.3%). This study may be helpful for the clean and high-value conversion of waste tires.
关键词：
Industrial wastewater;Fluoride;Monolayer Ca-Y LRH;Adsorption;Rapid and efficient removal
摘要：
Strategies for the rapid and efficient removal of fluoridated industrial wastewater are currently lacking. Herein, monolayer calcium-doped layered yttrium hydroxide (Ca-Y LRH) was synthesized through formamide exfoliation, and its removal of fluoride reached equilibrium within 4 min. The adsorption kinetics fit the pseudo-secondorder kinetic model with a faster adsorption rate (KF = 0.22 mg g- 1 min- 1), and the adsorption isotherm followed the Langmuir model with a maximum adsorption capacity of 483.33 mg g-1. The interlayer chloride ions in the monolayer Ca-Y LRH were the main ligands for substituting fluoride, which inhibited the increase in pH and maintained the continuation of the fluoride removal process. Furthermore, the optimum fluoride removal performance of monolayer Ca-Y LRH was predicted by software-based multiparameter methods and was found to be useful for treating fluoridated industrial wastewater samples (858.17 or 8.72 mg L-1). These findings provide novel insights into the treatment of fluoridated industrial wastewater.
期刊：
Chemical Engineering Journal,2024年481:148501 ISSN：1385-8947
通讯作者：
Bo Chai
作者机构：
[Huang, Junxin; Chai, Bo; Xiao, Jiangrong; Fan, Guozhi; Song, Guangsen] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China;[Zhang, Xiaohu] College of Chemistry, Huazhong Agricultural University, Wuhan 430070, P. R. China
通讯机构：
[Bo Chai] S;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
摘要：
One of the most crucial strategies for transforming solar energy into sustainable hydrogen energy is photocatalytic H2 evolution, and constructing an effective and durable photocatalyst remains a difficult task. Herein, a 1D/3D Co9S8/Mn0.3Cd0.7S Schottky heterojunctions were successfully fabricated by three-step hydrothermal procedure, in which 3D Mn0.3Cd0.7S solid solution particles were immobilized on the 1D tube-like Co9S8 surface, allowing for extremely effective charge separation and transfer. Through coupling Co9S8 with Mn0.3Cd0.7S, the photocatalytic H2 evolution activity and stability were significantly boosted. The 7 % Co9S8/Mn0.3Cd0.7S heterojunction possessed the highest photocatalytic activity with the H2 evolution rate of 1586.4 μmol⋅h−1, which was 3.73 times larger than that of pristine Mn0.3Cd0.7S, corresponding to 21.8 % apparent quantum efficiency (AQE) at 420 nm monochromatic light. The Schottky heterojunction mechanism between Co9S8 and Mn0.3Cd0.7S could plausibly explain the enhanced photocatalytic H2 evolution performance, according to density functional theory (DFT) calculations and ultraviolet photoelectron spectroscopy (UPS) measurements. This investigation would offer the useful insights to develop Co9S8 cocatalyst for application in photocatalytic H2 evolution.
摘要：
Thermochemical conversion of agricultural by-products into hydrogen-rich syngas is a technology that offers both economic and environmental benefits. In this work, we investigated a biochar-supported nickel-based catalyst for the catalytic pyrolysis of straw biomass to produce hydrogen-rich syngas. The by-product, straw biochar, was used as a material for synthesizing fresh catalysts, achieving a closed-loop process. We explored gas yields under various conditions. The highest yields of CO and H2, reaching 0.52 L/g and 0.48 L/g, respectively, were obtained under the conditions of a pyrolysis temperature of 900 degrees C, a residence time of 20 min, a calcination temperature of 400 degrees C, a nickel loading of 15 wt%, and a citric acid to potassium hydroxide ratio of 1:4. The catalysts were characterized using XRD, H2-TPR, SEM, and TEM. The results demonstrated that biochar provides excellent support and synergy, enabling the catalyst to function at high temperatures and offering antioxidative protection to the active metals during the thermal process. Overall, this catalytic pyrolysis process, aiming for green and efficient conversion, achieved high yields of syngas and hydrogen.
摘要：
A new direct immersion dual-drop microextraction (DIDDME) procedure is described for Fe(III) and Fe(II) speciation followed by detection with graphite furnace atomic absorption spectrometry. This method is based upon the selective reaction of 1-(2-pyridylazo)-2-naphthol (PAN) and N-benzoyl-N-phenylhydroxylamine (BPHA) with Fe(II) and Fe(III) to form complexes at pH 1.5. Two solvent drops that contain PAN and BPHA were concurrently immersed in a sample solution for simultaneous separation of Fe(III) and Fe(II), respectively. This method eliminated time-consuming and labor-intensive oxidation of Fe(II) or reduction of Fe(III), which may provide incomplete conversion and contamination. Using the optimal conditions, the detection limits were 0.067 ng mL−1 and 0.054 ng mL−1 for Fe(II) and Fe(III) with relative standard deviations of 6.0% and 5.1%, respectively. Enrichment factors of 300-fold were obtained. The procedure was successfully utilized for the determination of Fe(II) and Fe(III) in Chinese yellow wine. To evaluate accuracy of this method, a rice certified reference material was analyzed and the result was in good agreement with the certified value.
摘要：
Excess phosphorus (P) in surface water poses a serious threat to ecological safety. However, current methods for effectively removing low concentrations of phosphorus are complicated and expensive. Herein, we used one-step mechanical activation to enhance the release of alkalinity from carbonates and to stimulate ferrous activity in situ, thus achieving efficient and stable removal of phosphorus at low concentrations. The resultant activated FeCO 3 was demonstrated to be a high-performance material, which can remove more than 92 % of the actual low concentration of phosphorus pollution within 30 min, and the concentration of the effluent steadily met the requirements of Chinese Class I environmental quality standards for surface water (0.02 mg/L). In addition, mechanistic investigation showed that mechanical activation significantly enhanced the reactivity and phosphorus removal performance of MgCO 3 . Moreover, one-step mechanical activation simultaneously stimulates the release of alkaline and ferrous ionic groups from iron -rich FeCO 3 , which can produce highly active trivalent iron oxides in situ, leading to efficient and stable phosphorus removal at low concentrations. The present work provides a new insight and direction for developing high-performance materials to remediate low concentration phosphorus polluted waters.
摘要：
This work reports a novel TiO2/g-C3N4 photoanode-based photocatalytic fuel cell (PFC) designed to convert chemical energy from simulated wastewater. The g-C3N4 modified TiO2 nanorod was successfully synthesized by a facile hydrothermal method. The results indicated that the maximum photocurrent density reached 2.44 mA cm-2 at 1.23 V vs. RHE by 1.167 g L-1 g-C3N4 loaded TiO2 composite. On the basis of analysis, the photoelectrochemical mechanism of the composite photoanode was proposed. This mainly demonstrated that the composite photoanode increases the electron donor density and boosts charge separation efficiency. In addition, the power density and hydrogen production of the proposed PFC were enhanced by 5.37 and 1.49 times compared to TiO2 photoanode-based PFC. To find the origins of the excellent performance of PFC, the influence of the organic compounds were investigated. The ESR measurement results indicated that the organic matter was captured by the photoexcited holes directly to facilitate the charge separation. The achieved power density and hydrogen production of 0.14 mW cm-2 and 21.60 mu mol h-1 cm-2 were measured using RhB as the model pollutant, which was 2.42 and 1.23 times higher than the experiments with PBS electrolyte. This study proposed a novel PFC system converts the organic pollutant to the hydrogen and the electricity.
摘要：
In this study, thermal and calcium oxide (CaO) pretreatment were used as a strategy to improve the performance of the anaerobic digestion of food waste. Meanwhile, the carbon emissions among the two strategies were evaluated. The results showed that both the two strategies could effectively promote the solubilization of organic matter in food waste and improve the hydrolysis rate of anaerobic digestion, which resulted in an increase of the methane yield. The highest methane yield (284.4 mL/g VS) was obtained in the group pretreated with 1.0 g/L CaO, which was increased by 23.8% compared with the control group. After the pretreatment, the anaerobic digestion pathway changed from acetotrophic methanogenesis to the co-dominated methanogenesis process by hydrogentrophic and acetotrophic. Meanwhile, CaO pretreatment had a better performance on the carbon emission which was increased by 23.75% compared with the control group.
关键词：
Anaerobic digestion;biogas;Cobalt iron oxide;food waste;performance
摘要：
In this study, the impact of cobalt iron oxide(CoFe2O4) on the anaerobic digestion (AD) of food waste (FW) was investigated including the variations in pH, VFAs, ORP, Fe2+/Fe3+ concentrations, SCOD, dehydrogenase activity, methane production and microbial community structure. The results showed that CoFe2O4 had a positive effect on the anaerobic digestion of food waste. CoFe2O4 could promote the release of SCOD, increase the dehydrogenase concentration and reduce ORP resulting in an increase of methane production. At a CoFe2O4 concentration of 200 mg/L, the cumulative methane production reached to 414.75 mL/(gVS) which was increased by 79.1% compared to the control group(231.59 mL/(gVS)). Meanwhile, the variation of microbial community showed that CoFe2O4 could increase the relative abundance of Methanobacterium and the methane production pathway in the AD was shifted from acetoclastic to hydrogenotrophic.
摘要：
As industrial modernization advances rapidly, the need for energy becomes increasingly urgent. This paper aims to enhance the current burner design by optimizing the combustion calorific value, minimizing pollutant emissions, and validating the accuracy of the burner model using experimental data from previous studies. The enhanced porous medium burner model is used to investigate the burner’s combustion and pollutant emission characteristics at various flow rates, equivalence ratios, combustion orifice sizes, and porosity of porous media. In comparison with the previous model, the combustion traits during ethylene combustion and the emission properties of pollutants under various operational circumstances have been enhanced with the enhanced porous medium burner model. The maximum temperature of ethylene combustion in the enhanced model is 174 k higher than that before the improvement, and the CO emissions are reduced by 31.9%. It is believed that the findings will serve as a guide for the practical implementation of porous media combustion devices.
摘要：
To enhance the application range of flexible films, it is crucial to rationally design composite films with high stretchability, excellent thermal conductivity, and water resistance. Flexible composite films with nanocellulose (CNF)-modified expanded graphite and spun fibers loaded with phase change materials as the backbone were obtained by electrospinning method. The prepared materials were characterized by good tensile properties (328.32%), high latent heat (107.0 J/g), good thermal stability, high photo-thermal conversion efficiency, good reusability, flame retardant properties, UV resistance and visible light absorption properties. What's more, the performance of the flexible composite membrane is adjustable. The prepared flexible composite membranes are promising in the fields of solar thermal energy conversion, wearable flexible materials and renewable energy utilization.
摘要：
A three-energy equation model was utilized to analyze forced convective heat transfer in bi-disperse packed bed channels and circular tubes. The fluid phase energy equation was coupled and solved with two distinct heat conduction equations, accounting for both large and small particles. An exact solution was obtained for hydrodynamically and thermally fully developed Darcy flows in a bi-disperse packed bed channel under constant wall heat flux conditions. Additionally, highly accurate approximate solutions based on an integral method were developed for plane and axisymmetric forced convective flows, for which exact solutions are unavailable. The Nusselt numbers for conduits filled with a bi-disperse packed bed were found to be significantly higher than those for conduits filled with a mono-disperse packed bed. Since the Nusselt number remains insensitive to the filler diameter under fixed porosity conditions, employing fillers with comparatively larger diameters is advisable to mitigate excessive pressure drop.
作者机构：
[Xia, Yang; Ho, Wingkei] Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong 999077, Peoples R China.;[Xia, Yang; Ho, Wingkei] Educ Univ Hong Kong, Ctr Environm & Sustainable Dev CESD, Tai Po, Hong Kong 999077, Peoples R China.;[Zhu, Bicheng; Yu, Jiaguo; Yu, JG] China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, Wuhan 430074, Peoples R China.;[Xia, Yang] Wuhan Inst Technol, Sch Chem Engn & Pharm, Minist Educ, Key Lab Green Chem Proc, Wuhan 430205, Peoples R China.;[Ho, Wingkei] City Univ Hong Kong, State Key Lab Marine Pollut, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China.
通讯机构：
[Ho, WK ] E;[Yu, JG ] C;Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong 999077, Peoples R China.;Educ Univ Hong Kong, Ctr Environm & Sustainable Dev CESD, Tai Po, Hong Kong 999077, Peoples R China.;China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, Wuhan 430074, Peoples R China.
摘要：
Sluggish charge kinetics and moderate adsorption-desorption ability of gas molecules are major limitations for photocatalytic NOx elimination of bulk g-C3N4. A hierarchical porous g-C3N4 photocatalyst modified with N vacancies and charge channels (KCNN) was prepared by thermal polymerisation in KCl medium followed by quenching to increase the photocatalytic efficiency. The optimized KCNN sample exhibits highly enhanced photocatalytic NO removal rate (70.5%), which is superior to those of bulk g-C3N4 (38.1%), porous g-C3N4 (54.5%) and K-doped g-C3N4 (58.6%), respectively. X-ray photoelectron spectroscopy and electron paramagnetic resonance data reveal the successful formation of N vacancy in g-C3N4 framework. The enhanced activity of KCNN is ascribed to the enlarged surface area, expanded light absorption, low charge recombination efficiency and strong oxidation capability, respectively. In situ DRIFTS and density functional theory results suggest that the introduction of N vacancies and K+ ions enable control over NO adsorption and activation, leading to the implementation of a preferred pathway (NO -> NO+ -> NO3-) and reduction in the emission of toxic in-termediates. This work presents a potential idea for improving the charge transfer of layered materials and optimising the diffusion/adsorption/activation of gas molecules for photocatalytic NO oxidation.
