Synthesis of heterobinuclear Cu(Ⅱ)-Ni(Ⅱ) complex: Structure, CT-DNA interaction, hydrolytic function and antibacterial studies
作者：
Ding, Peipei;Wang, Yang;Kou, Huizhi;Li, Jianfen;Shi, Baoxian*
期刊：
Journal of Molecular Structure ,2019年1196:836-843 ISSN：0022-2860
通讯作者：
Shi, Baoxian
作者机构：
[Wang, Yang; Li, Jianfen; Ding, Peipei; Shi, Baoxian; Kou, Huizhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Shi, Baoxian] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Antibacterial activities;CT-DNA binding;Heterbinuclear complex;Hydrolytic function;X-ray diffraction
摘要：
A new benzyls pendant-armed macrobicyclic heterbinuclear Cu(II)-Ni(II) complex has been obtained by template-directed synthesis and characterized by elemental analysis, IR spectra, electrospray mass spectra, and single crystal X-ray diffraction. The complex was bridged by two phenolic oxygens and an acetate radical, with the Cu(II)-Ni(II) distance of 2.9292(8) angstrom. The hydrolytic function, CT-DNA binding and antibacterial properties were also studied. The initial rate values for the hydrolysis of 4-nitophenylphosphate to 4-nitrophenolate by the Cu(II)-Ni(II) complex was 1.33 x 10(-5) s(-1), and 10(4) times faster than that the spontaneous hydrolysis of the phosphate monoester. The complex shows a better binding property to CT-DNA and the intrinsic binding constant is 1.29 x 10(5) M-1. The Stern-Volmer constant is 1.25 x 10(5) M-1. The viscosity increased obviously with the increase of complex concentration, the results showed that the complex bind to DNA through intercalation mode, which was in accordance with the absorption and emission spectral studies. The antibacterial activities against E.coli was also investigated using the Gentamycinas reference system. (C) 2019 Published by Elsevier B.V.
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英文
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A new macrocyclic heterobinuclear Cu(II)-Zn(II) complex: synthesis, crystal structure, phosphate hydrolysis, and DNA binding studies
作者：
Kou, Huizhi;Wang, Yang;Ding, Peipei;Li, Jianfen;Shi, Baoxian*
期刊：
Journal of Coordination Chemistry ,2019年72(10):1683-1696 ISSN：0095-8972
通讯作者：
Shi, Baoxian
作者机构：
[Kou, Huizhi; Wang, Yang; Ding, Peipei; Li, Jianfen; Shi, Baoxian] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China
通讯机构：
[Shi, Baoxian] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
关键词：
Macrocyclic heterobinuclear;crystal structure;phosphate ester hydrolysis;DNA binding;viscosity
摘要：
A new macrocyclic heterobinuclear Cu(II)-Zn(II) complex was synthesized and characterized by elemental analysis, FT-IR, ES-MS, and single-crystal X-ray diffraction. Five-coordinate geometry for the new complex is proposed. The copper horizontal ellipsis zinc distance bridged by two phenolic oxygens and a acetate ligand is 2.9508 angstrom. The phosphate ester hydrolysis activity and the DNA binding ability of the complex were studied. The results showed that the present complex has an efficient catalytic activity of phosphoester bond cleavage. The catalytic rate constant k(cat) for the hydrolysis of 4-nitrophenyl phosphate disodium salt hexahydrate (pNPP) by the synthesized complex is 2.69 x 10(-4) s(-1) and 10(5) times faster than the spontaneous hydrolysis of the phosphate monoester. The complex shows a good binding ability to calf thymus (CT-DNA) and the corresponding binding constant is 1.9 x 10(5) M-1. The linear Stern-Volmer quenching constant obtained by the fluorescent spectroscopic is 6.3 x 10(4) M-1. [GRAPHICS] .
语种：
英文
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Catalytic Conversion of Glucose to 5-(Hydroxymethyl)furfural Over Phosphotungstic Acid Supported on SiO2-Coated Fe3O4
作者：
Wang, Yuexin;Hu, Zongxiao;Fan, Guozhi* ;Yan, Juntao;Song, Guangsen;...
期刊：
Waste and Biomass Valorization ,2019年10(8):2263-2271 ISSN：1877-2641
通讯作者：
Fan, Guozhi;Li, Jianfen
作者机构：
[Hu, Zongxiao; Wang, Yuexin; Li, Jianfen; Fan, Guozhi; Song, Guangsen; Yan, Juntao] Wuhan Polytech Univ, Sch Chem & Environm Engn, 68 South Xuefu Rd, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Fan, GZ; Li, JF] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, 68 South Xuefu Rd, Wuhan 430023, Hubei, Peoples R China.
关键词：
Glucose;5-(Hydroxymethyl)furfural;Phosphotungstic acid;Fe3O4;SiO2
摘要：
Abstract: There is a significant interest in valorization of biomass and its derivatives into chemicals. In this work, glucose derived from biomass was converted into 5-(hydroxymethyl)furfural (HMF). Phosphotungstic acid (PHA) supported on magnetic nanoparticles Fe3O4 coated by SiO2 (Fe3O4@SiO2/PHA) was prepared and employed in the synthesis of HMF from glucose. The supported catalyst of Fe3O4@SiO2/PHA was characterized by infrared spectroscopy (IR) and powder X-ray diffraction. The results indicated that the supported catalyst exhibited similar catalytic activity to that of homogeneous PHA. The effects of such reaction variables as the amount of PHA, reaction solvent, temperature and time were studied in detail. The yield of HMF at 30.4% was observed at 130 °C for 3 h in N,N-dimethylformamide under nitrogen atmosphere. The supported catalyst was recovered by an external magnet after the reaction and reused in the next run without further pretreatment. No significant change in activity was observed at the initial four cycles, in which the yield of HMF changed in a small range from 28.7 to 30.8%. Graphical Abstract: [Figure not available: see fulltext.]. © 2018, Springer Science+Business Media B.V., part of Springer Nature.
语种：
英文
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Precursor-template Strategy toward Hollow Nanostructured Li(Ni1/3Co1/3Mn1/3)O-2 Microspheres Cathode with Enhanced Electrochemical Performance
作者：
Kang, Zhenya;Wang, Yourong* ;Yao, Mengzhi;Cheng, Siqing*
期刊：
International Journal of Electrochemical Science ,2018年13(7):6771-6778 ISSN：1452-3981
通讯作者：
Wang, Yourong;Cheng, Siqing
作者机构：
[Kang, Zhenya; Wang, YR; Cheng, SQ; Wang, Yourong; Cheng, Siqing; Yao, Mengzhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, YR; Cheng, SQ] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
关键词：
Li(Ni1/3Co1/3Mn1/3)O-2 ( NCM);Precursor template;cathode materials;Lithium ion batteries (LIBs);Electrochemical performance
摘要：
The hollow nanostructured Li(Ni1/3Co1/3Mn1/3)O2 (NCM) microspheres with low Li/Ni disorder were fabricated by precursor-template approach and investigated electrochemically as lithium ion batteries (LIBs) cathode. The as-obtained NCM microspheres cathode exhibits high specific capacity, good coulombic efficiency and outstanding rate capability. This might mainly be due to the unique hollow nanostructured architectures of the NCM microspheres enabling to shorten Li+ diffusion and electron transportation paths in the materials, which is verified via the cyclic voltammetry (CV) at various scan rate to obtain the high apparent Li+ diffusion coefficient for the discharge/charge processes. © 2018 Published by ESG.
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英文
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Synthesis, Characterization, and Performance Evaluation of Sulfur-Containing Diphenylamines Based on Intramolecular Synergism
作者：
He, Jun-Bo;Shi, Hao;Wang, Yue;Gao, Xin-Lei*
期刊：
Molecules ,2018年23(2) ISSN：1420-3049
通讯作者：
Gao, Xin-Lei
作者机构：
[He, Jun-Bo; Shi, Hao] Wuhan Polytech Univ, Coll Food Sci & Engn, Minist Educ, Key Lab Deep Proc Major Grain & Oil, Wuhan 430023, Hubei, Peoples R China.;[Wang, Yue; Gao, Xin-Lei] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Gao, Xin-Lei] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
antioxidant mechanism;dual functional antioxidants;intramolecular synergism;sulfur-containing 4-aminodiphenylamine
摘要：
To obtain novel structural antioxidants that have different antioxidant mechanisms, four 2-(alkylthio)-N-(4-(phenylamino)phenyl)acetamides 2a–d as dual functional antioxidants are designed, synthesized, and confirmed by 1H-NMR, FTIR, MS, and elemental analysis. The antioxidant behavior of compounds 2a–d as additives of base oil triisodecyl trimellitate (TIDTM) is evaluated by non-isothermal and isothermal DSC analyses. The results showed all compounds can greatly increase the incipient oxidation temperature (IOT) and oxidation induction time (OIT) of TIDTM, especially, compound 2c exhibited an OIT value of 72.5 min at 230 ◦C, which is almost 28 times the length of TIDTM. Moreover, compounds 2a–d do not affect the tribological performance of TIDTM. The mechanism of antioxidants involved an intramolecular synergism are proposed. This work demonstrates compound 2c can be used as a novel potential antioxidant additive of TIDTM; in addition, it would inspire the emergence of highly potent antioxidants with different antioxidant mechanisms. © 2018 by the authors.
语种：
英文
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Synthesis of cyclic carbonate via the coupling reaction of carbon dioxide with epoxide at ambient pressure
作者：
Hu, Zongxiao;Fan, Guozhi* ;Wang, Yuexin;Li, Jianfen;Song, Guangsen
期刊：
Greenhouse Gases: Science and Technology ,2018年8(3):570-579 ISSN：2152-3878
通讯作者：
Fan, Guozhi
作者机构：
[Hu, Zongxiao; Wang, Yuexin; Li, Jianfen; Song, Guangsen; Fan, Guozhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Fan, Guozhi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
CO2;epoxide;cyclic carbonate;ambient pressure;ZnBr2;Bu4NBr
摘要：
Cyclic carbonates were synthesized via the coupling reaction of CO2 with epoxides at ambient pressure. The reaction of atmospheric pressure CO2 with styrene oxide (SO) was selected as the model reaction. The coupling reaction was investigated by varying a simple catalytic system composed of Lewis acid and quaternary ammonium salt, molar ratio of catalyst to substrate, solvent, and temperature. The yield of styrene carbonate (SC) reached 91.5% in the presence of ZnBr2/Bu4NBr at p(CO2)° = 0.1 MPa and 100°C for 4 h. The coupling reactions between CO2 and a series of substrates including aliphatic and aromatic epoxides were also performed efficiently. Yields of cyclic carbonates in the range of 76.4–93.2% were achieved. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.
语种：
英文
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TiCl_4处理对纳米结构SrTiO_3薄膜及染料敏化太阳能电池性能的影响
作者：
寇慧芝;杨术明;王洋;闫俊涛
期刊：
功能材料 ,2018年49(5):05023-05027 ISSN：1001-9731
通讯作者：
Yan, J.
作者机构：
[闫俊涛; 寇慧芝; 王洋] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China;[杨术明] College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China
通讯机构：
[Yan, J.] S;School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
关键词：
染料敏化太阳能电池;TiCl_4处理;光谱电化学;自由电子密度;陷阱态;短路光电流
摘要：
研究了TiCl_4处理对纳米结构SrTiO_3薄膜电极及染料敏化太阳能电池的影响。与未处理SrTiO_3电极相比,TiCl_4处理后的电极能够吸附更多的染料。采用时间分辨电流的方法研究了两种电极的陷阱态分布。在0.2mol/L高氯酸四丁基铵(TBAP)和0.5mol/L高氯酸乙酰丙酮溶液中,未处理SrTiO_3电极和TiCl_4处理电极的陷阱态密度分别为2.85×10~(16)和1.83×10~(16) cm-2。光谱电化学表明TiCl_4处理后SrTiO_3电极导带中自由电子密度增加,暗电流减小,电荷复合减小。测量了N3敏化SrTiO_3电极和TiCl_4处理SrTiO_3电极的光电流电压曲线,发现TiCl_4处理SrTiO_3太阳能电池有较高的光电流密度,这与前面的测试结果相吻合。
语种：
中文
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Reduced Graphene oxide -coated 3D interconnected SiO2 Nanoparticles with Enhanced Lithium Storage Performance
作者：
Guo, Xu;Xie, Kai;Wang, Yourong* ;Kang, Zhengya;Zhou, Wei;...
期刊：
International Journal of Electrochemical Science ,2018年13(6):5645-5653 ISSN：1452-3981
通讯作者：
Wang, Yourong;Cheng, Siqing
作者机构：
[Guo, Xu; Xie, Kai; Wang, YR; Cheng, SQ; Wang, Yourong; Cheng, Siqing; Zhou, Wei; Kang, Zhengya] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, YR; Cheng, SQ] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
关键词：
Anode materials;Lithium ion batteries;SiO 2;Sol-gel method
摘要：
3D interconnected SiO 2 nanoparticles coated by reduced graphene oxide (rGO) (SiO 2 @rGO) were fabricated easily by online hydrolysis and subsequent condensation of the precursor tetraethylorthosilicate (TEOS) in the dispersed graphene oxide (GO) sol, followed by the reduction of GO using hydrazine hydrate. The as-obtained 3D interconnected SiO 2 nanoparticles coated by rGO composites as anode material for lithium ion rechargeable batteries (LIBs) delivers a reversible discharge capacity of 490.7 mAh g -1 at a current density of 100 mA g -1 after 60 cycles with the coulombic efficiency of nearly 98%. Compared to the bare nano-SiO 2 , the enhanced lithium storage performance could be attributed to its unique 3D interconnected network space structure to accommodate the volume variation during cycled lithiation/delithiation process. © 2018 The Authors.
语种：
英文
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A facile synthesis of hierarchical MoS2 nanotori with advanced lithium storage properties
作者：
Xie, Kai;Liu, Zhenghao;Wang, Yourong* ;Song, Guangsen;Cheng, Siqing*
期刊：
NEW JOURNAL OF CHEMISTRY ,2018年42(13):10935-10939 ISSN：1144-0546
通讯作者：
Wang, Yourong;Cheng, Siqing
作者机构：
[Xie, Kai; Wang, YR; Cheng, SQ; Wang, Yourong; Cheng, Siqing; Song, Guangsen; Liu, Zhenghao] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, YR; Cheng, SQ] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
摘要：
MoS2 with a 2D layered structure and high theoretical capacity has been regarded as a promising candidate for anode materials in lithium ion batteries. But its poor cyclic stability and low rate capability hinder its practical applications. Herein, hierarchical MoS2 nanotori consisting of MoS2 nanosheets with an increased interlayer distance were synthesized by a facile hydrothermal reaction for the first time. A possible formation mechanism of the hierarchical MoS2 nanotori is proposed based on the scanning electronic microscopy (SEM) results and the influence of the MoO3 precursor on the morphology of the MoS2 obtained. The hierarchical MoS2 nanotori display superior reversible capacity, good rate capability and improved cyclic performance, which can be attributed to their hierarchical surface, hollow structure feature and increased layer distance. The formation mechanism of hierarchical MoS2 nanotori proposed here should offer a new technique for the design and synthesis of MoS2 with different morphologies using MoO3 as the growth template.
语种：
英文
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Hierarchically porous carbon derived from peanut shells for high-performance lithium-sulfur batteries
作者：
Zhu, Lei;Wang, Yourong* ;Xie, Kai;Song, Guangsen;Cheng, Siqing*
期刊：
Chemistry Letters ,2018年47(2):236-239 ISSN：0366-7022
通讯作者：
Wang, Yourong;Cheng, Siqing
作者机构：
[Zhu, Lei; Xie, Kai; Wang, YR; Cheng, SQ; Wang, Yourong; Cheng, Siqing; Song, Guangsen] Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, YR; Cheng, SQ] W;Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Lithium-sulfur batteries;Hierarchically porous carbon (HPC);Peanut shell
摘要：
Lithium-sulfur (Li-S) batteries are considered to be a promising energy storage device because of their high theoretical energy density and relatively low cost. But low rate performance and poor cycle stability arising from the poor electronic conductivity and the shuttling of polysulfide intermediates hamper its practical application. In order to address these shortcomings, hierarchically porous carbon (HPC) derived from peanut shells is employed as a host to accommodate sulfur for the first time. As-prepared HPC possesses a hierarchically porous structure with a relatively high specific surface area of 1775.7m2 g-1 and a large pore volume of 1.457 cm3 g-1. When as-prepared HPC was employed as cathode hosts for lithiumsulfur batteries, it was found that S/HPC composite displayed an excellent electrochemical performance. The initial discharge capacity of 1659.8mAh g-1 is reached at 0.5C and a reversible capacity of 815.7mAh g-1 can be maintained after 100 cycles. Even if the current density increases to 3C, the specific capacity still is as high as 736.9mAh g-1. ©2018 The Chemical Society of Japan.
语种：
英文
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Synthesis of 5-hydroxymethyl furfural from cellulose via a two-step process in polar aprotic solvent
作者：
Fan, Guozhi* ;Wang, Yuexin;Hu, Zongxiao;Yan, Juntao;Li, Jianfen;...
期刊：
Carbohydrate Polymers ,2018年200:529-535 ISSN：0144-8617
通讯作者：
Fan, Guozhi
作者机构：
[Hu, Zongxiao; Wang, Yuexin; Li, Jianfen; Song, Guangsen; Yan, Juntao; Fan, Guozhi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Fan, Guozhi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
5-Hydroxymethyl furfural;Cellulose;Glucose;Phosphotungstic acid;Two-step process
摘要：
The synthesis of 5-hydroxymethyl furfural (HMF) from cellulose via a two-step process was investigated. To optimize reaction conditions, the separate conversion of cellulose and glucose was first performed in tetrahydrofuran (THF) and N, N-dimethylformamide (DMF) via a one-step process using hosphotungstic acid (PHA) as catalyst. The direct conversion of cellulose to HMF was then performed via the two-step process. The first step and the second step were carried out in THF and the mixture solvent composed of THF/DMF, respectively. Cellulose was converted to HMF and glucose in the first step in THF. Both of cellulose and the as-formed glucose were then converted to HMF in the second step. The conversion of cellulose to HMF and glucose were significantly improved by the two-step process, and the total yield of HMF and glucose was elevated from 52.1 to 97.0%. A possible mechanism for the formation of HMF from cellulose via the two-step process was also proposed. © 2018 Elsevier Ltd
语种：
英文
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High capacitance LiMn2O4 microspheres with different microstructures as cathode material for aqueous asymmetric supercapacitors
作者：
Xiao, Haowen;Wang, Yourong* ;Xie, Kai;Cheng, Siqing* ;Cheng, Xianzhong
期刊：
Journal of Alloys and Compounds ,2018年738:25-31 ISSN：0925-8388
通讯作者：
Wang, Yourong;Cheng, Siqing
作者机构：
[Cheng, Xianzhong; Xie, Kai; Wang, YR; Cheng, SQ; Wang, Yourong; Cheng, Siqing; Xiao, Haowen] Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Wang, YR; Cheng, SQ] W;Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Aqueous electrolyte;Asymmetric supercapacitor;Electrochemical performance;Hollow LiMn 2 O 4 microspheres;Porous LiMn 2 O 4 microspheres
摘要：
Asymmetric supercapacitors (ASCS) with a battery-type electrode and a capacitor-type electrode have been regarded as the most promising energy-storage devices with high-energy and high-power densities. In this paper, the porous and hollow LiMn2O4 microspheres were prepared using MnCO3 microspheres as template and subsequently an ASCS with the as-prepared LiMn2O4 as cathode and activated carbon (AC) as anode in Li2SO4 aqueous electrolyte (designated by AC//LiMn2O4 ASCS) was assembled and investigated electrochemically. The results indicate that the porous LiMn2O4 exhibits a higher reversible capacity and rate capability compared to hollow LiMn2O4 microspheres, and delivers a specific capacitance of 536 F g(-1) at 1 mV s(-1). The assembled AC//porous LiMn2O4 ASCS presents a high energy density of 33.12 Wh kg(-1) at the power density of 90 W kg(-1). All these might be attributed to the unique microstructure of the as-prepared porous LiMn2O4 microspheres. (c) 2017 Elsevier B.V. All rights reserved.
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英文
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高校有机化学实验室绿色化学管理初探
作者：
寇慧芝;王洋
期刊：
新智慧 ,2017年(13):29-29 ISSN：1674-3717
作者机构：
武汉轻工大学化学与环境工程学院;[王洋; 寇慧芝] 武汉轻工大学
关键词：
有机化学实验室;绿色化学;管理方法
摘要：
高校有机化学实验室是用来支持学生做各种学术研究的主要阵地,但近几年却有多起报道爆出高校化学实验室出现安全事故.在调查事故过程中,相关人员表示,高校实验室管理问题应当予以重视.基于此,笔者结合实际工作经验,对高校有机化学实验室绿色化学管理进行探析,希望对提高高校化学实验室管理质量有所助益.
语种：
中文
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Coupling reaction of carbon dioxide with styrene oxide over Cu(acac)2 and n-Bu4NBr supported on Fe3O4@MCM-41
作者：
Fan, Guozhi* ;Wang, Yuexin;Yan, Juntao;Song, Guangsen;Li, Jianfen*
期刊：
Journal of CO2 Utilization ,2017年18:370-377 ISSN：2212-9820
通讯作者：
Fan, Guozhi;Li, Jianfen
作者机构：
[Wang, Yuexin; Li, Jianfen; Song, Guangsen; Yan, Juntao; Fan, Guozhi; Li, J] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Fan, GZ; Li, J] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Carbon dioxide;Styrene oxide;Styrene carbonate;Cu(acac)(2);n-Bu4NBr
摘要：
Cu(acac)<inf>2</inf>/n-Bu<inf>4</inf>NBr/Fe<inf>3</inf>O<inf>4</inf>@MCM-41 was prepared by supporting Cu(acac)<inf>2</inf>as well as n-Bu<inf>4</inf>NBr on complex support of Fe<inf>3</inf>O<inf>4</inf>@MCM-41 and developed as binary supported catalyst for the synthesis of styrene carbonate (SC) via the coupling reaction of styrene oxide (SO) with carbon dioxide (CO<inf>2</inf>). The activity of the supported catalyst was investigated by supporting Cu(acac)<inf>2</inf>and n-Bu<inf>4</inf>NBr alone or together, varying molar ratio of materials and reaction conditions including CO<inf>2</inf>pressure, reaction temperature as well as time. Cu(acac)<inf>2</inf>/n-Bu<inf>4</inf>NBr/Fe<inf>3</inf>O<inf>4</inf>@MCM-41 displayed higher catalytic activity than that of single supported catalyst, homologous homogenous catalytic system composed of Cu(acac)<inf>2</inf>and n-Bu<inf>4</inf>NBr in terms of the conversion of SO and the yield of SC. Excellent SC yield at 87.5% was obtained under optimized conditions. The recyclability of binary supported catalyst was also performed. No obvious loss in the activity was observed at the initial 3 cycles and the subsequent loss in the catalytic performance can be recovered by supplementing moderate amount of n-Bu<inf>4</inf>NBr. ©2017 Elsevier Ltd. All rights reserved.
语种：
英文
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高校化学实验室安全管理探究
作者：
王洋;寇慧芝
期刊：
新智慧 ,2017年(13):48-49 ISSN：1674-3717
作者机构：
武汉轻工大学化学与环境工程学院;[王洋; 寇慧芝] 武汉轻工大学
关键词：
高校化学试验室;安全管理;探究
摘要：
多年来,高校的化学实验室安全事故频发,在进行化学实验时会涉及到化学品的研究.化学实验室常藏着各种安全隐患,有火灾、爆炸,还有化学试剂腐蚀毒害、放射性照射、电气设备漏电、玻璃制品易碎割伤等大大小小的安全事故,但只要学生保持较高的安全防范意识,养好良好的安全习惯,就能避免不必要的安全灾难.所以,提高高校学生和校职工的安全管理和防范意识极其重要.
语种：
中文
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Mesoporous silica nanoparticles as high performance anode materials for lithium-ion batteries
作者：
Wang, Yourong;Xie, Kai;Guo, Xu;Zhou, Wei;Song, Guangsen;...
期刊：
NEW JOURNAL OF CHEMISTRY ,2016年40(10):8202-8205 ISSN：1144-0546
通讯作者：
Cheng, Siqing
作者机构：
[Guo, Xu; Xie, Kai; Wang, Yourong; Cheng, Siqing; Song, Guangsen; Zhou, Wei] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Cheng, Siqing] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
摘要：
A facile sol-gel/emulsion approach was employed for the fabrication of mesoporous silica nanoparticles with a large BET specific surface area of 1594 m(2) g(-1). The as-prepared SiO2 electrode delivers a highly stable specific capacity of as large as 1060 mA h g(-1) at a current density of 100 mA g(-1) after 90 cycles, exhibiting a good cycling stability.
语种：
英文
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Facile Synthesis of Hollow Co9S8 Nanospheres for High Performance Pseudocapacitor
作者：
Zhang, Liping;Wang, Yourong;Zhou, Wei;Song, Guangsen;Cheng, Siqing*
期刊：
International Journal of Electrochemical Science ,2016年11(2):1541-1548 ISSN：1452-3981
通讯作者：
Cheng, Siqing
作者机构：
[Wang, Yourong; Cheng, Siqing; Song, Guangsen; Zhou, Wei; Zhang, Liping] Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Cheng, Siqing] W;Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Co9S8;Hollow nanosphere;Electrochemical performance;Pseudocapacitor
摘要：
The hollow Co9S8 nanospheres with ca. 50 nm were elaborately fabricated by a facile solvothermal method and characterized by powder X-ray diffraction (XRD), Scanning electron microscopy (SEM) and BET measurement to result in a specific surface area of 226 m(2) g(-1). The prepared hollow Co9S8 nanosphere electrode delivers a initial specific capacitance of 234.7 F g(-1) at a current density of 0.5 A g(-1), which can be retained up to the 60th cycle, indicating the good cycleability and excellent rate capability. As a consequence, the energy density of the prepared Co9S8 pseudocapacitor could reach up to 17.96 Wh kg(-1) at a power density of 32.82 W kg(-1), which is much more than those of common electric double capacitors, exhibiting the pseudocapacitive characteristic. This might be due to the unique hollow Co9S8 nanosphere structure to shorten the path of the electron transportation and the ionic diffusion.
语种：
英文
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A Non-aqueous Hybrid Supercapacitor with Porous Anatase TiO2 Nanoparticles Anode and Activated Carbon Cathode
作者：
Wang, Dan;Xie, Kai;Wang, Yourong;Cheng, Siqing*
期刊：
International Journal of Electrochemical Science ,2016年11(12):9776-9782 ISSN：1452-3981
通讯作者：
Cheng, Siqing
作者机构：
[Xie, Kai; Wang, Dan; Wang, Yourong; Cheng, Siqing] Wuhan Polytech Univ, Innovat Ctr Nanomat Energy & Med, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Cheng, Siqing] W;Wuhan Polytech Univ, Innovat Ctr Nanomat Energy & Med, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Electrochemical performance;Hybrid supercapacitor;Non-aqueous electrolyte;Porous anatase TiO 2
摘要：
The porous anatase TiO 2 nanoparticles were synthesized by a facile hydrothermal method and characterized by scanning electronic microscopy (SEM), transmission electronic microscopy (TEM) and powder X-ray diffraction (XRD). A non-aqueous hybrid supercapacitorwith the as-prepared TiO 2 nanoparticles anode and activated carbon (AC, BP-2000) cathode was fabricated and investigated electrochemically. The results showed that the hybrid supercapacitor with the optimal mass ratio 1:2 of AC to TiO 2 delivers a specific capacitance of 48 F g -1 at a current rate of 100 mA g -1 and exhibits a good cycling stability. Within a voltage window of 0-3 V, 60.75 W h kg -1 of energy is acquired at 150 W kg -1 , indicating the promising application of such hybrid supercapacitor in achieving both high energy density and power density to power the burgeoning hybrid electric vehicles (HEVs)/electric vehicles (EVs). © 2016 The Authors.
语种：
英文
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Capacitive Nanosized Spinel alpha-LiFe5O8 as High Performance Cathodes for Lithium-ion Batteries
作者：
Zhou, Wei* ;Wang, Yourong;Zhang, Liping;Song, Guangsen;Cheng, Siqing
期刊：
International Journal of Electrochemical Science ,2015年10(6):5061-5068 ISSN：1452-3981
通讯作者：
Zhou, Wei
作者机构：
[Wang, Yourong; Cheng, Siqing; Song, Guangsen; Zhou, Wei; Zhang, Liping] Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhou, Wei] W;Wuhan Polytech Univ, ICNEM, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
alpha-LiFe5O8;Cathodes;Capacitive;Lithium-ion batteries
摘要：
The nanosized spinel alpha-LiFe5O8 with a grain size of about 10 nm was fabricated by a facile solid state method via the assistance of oxalic acid. The as-prepared alpha-LiFe5O8 electrode for lithium ion battery delivers a high reversible initial specific capacity of 257.1 mA h g(-1) at 28 mA g(-1) and remaining at 130 mAh g(-1) at as high as 2820 mA g(-1) even after 100 cycles, as well as excellent rate capability and improved cycling stability, which has not reported before for lithium ferrite oxides. This might be attributed to the characteristic pseudocapacitive behavior of lithium storage in nanosized spinel alpha-LiFe5O8 and the structural stability of alpha-LiFe5O8 upon charge/discharge as well, as evidenced by CV measurement for the as-prepared alpha-LiFe5O8 electrode. The unique combination of those features for lithium ion battery and capacitor is potential to develop high performance hybrid energy storage device for the needs of electric vehicle batteries and other high powder applications.
语种：
英文
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Anatase TiO2 Hollow Nanospheres with Ultrathin Shell Exhibit Superior Lithium Storage Property
作者：
Zhou, Wei* ;Wang, Yourong;Zhang, Liping;Song, Guangsen;Cheng, Siqing
期刊：
International Journal of Electrochemical Science ,2015年10(7):5942-5949 ISSN：1452-3981
通讯作者：
Zhou, Wei
作者机构：
[Wang, Yourong; Cheng, Siqing; Song, Guangsen; Zhou, Wei; Zhang, Liping] Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhou, Wei] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, ICNEM, Wuhan 430023, Hubei, Peoples R China.
关键词：
Anatase TiO2;Hollow nanospheres;Electrochemical performance;Anode materials;Lithium-ion battery
摘要：
TiO2 hollow nanospheres with ultrathin shell of ca.10 nm were prepared by using sulfur nanospheres as templates and its electrochemical performance was investigated as anode material for lithium ion battery. The results show that the as-obtained anatase TiO2 exhibits superior lithium storage capability due to its characteristic lithium storage mechanism and somewhat pseudocapacitive property. The as-obtained anatase TiO2 electrode delivered a high initial specific capacity of 574.5 mAh g-1 at 168 mA g-1 and displays excellent cycling performance after first cycle, which might be attributed to the improvement of ionic and electron conduction of anatase TiO2 due to the unique hollow nanostructure with ultrathin shell. © 2015 The Authors.
语种：
英文
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