期刊：
Bulletin of Environmental Contamination and Toxicology,2011年87(1):86-90 ISSN：0007-4861
通讯作者：
Zhou, CJ
作者机构：
[Zou, Bingsuo] Micro-nano Technology Center, School of MSE, Beijing Institute of Technology, Beijing 100081, China;[Zhang, Qinglin; Wan, Qiang; Zhou, Weichang; Lei, Aihua; Zhang, Wenjie] School of Chemistry and Chemical Engineering, Micro-Nano Center, Hunan University, Changsha 410082, China;[Zhou, Chunjiao] College of Science, Hunan Agricultural University, Changsha 410128, China
摘要：
The photosensitive resveratrol was successfully encapsulated in yeast cells for the first time, as characterized by FT-IR spectra, fluorescence and confocal micrographs of the yeast cells, resveratrol and microcapsules. The release characteristic of the obtained yeast-encapsulated resveratrol in simulated gastric fluid was evaluated, and its storage stability as a powder was investigated at 25 degrees C/75% relative humidity (RH), 25 degrees C/90% RH and 60 degrees C under the laboratory fluorescent lighting conditions (ca. 300 lx) or in the dark. Also, the scavenging capacity of yeast-encapsulated resveratrol on DPPH radical was compared with that of non-encapsulated resveratrol. It could be demonstrated clearly that no chemical changes occurred during the encapsulation. Besides, the DPPH radical-scavenging activity increased after the encapsulation. In addition, the yeast-encapsulated resveratrol exhibited good stability, and its bioavailability was enhanced as a result of increased solubility of resveratrol and sustained releasing. (c) 2007 Elsevier B.V. All rights reserved.
摘要：
Nanoporous selenium was prepared by a simple mechanical method adopting nano-CaCO3 as a template. When used as a cathode, it can exhibit relatively high capacity and good cycling behaviour. These results present great promise for this new cathode material for rechargeable lithium batteries of high energy density.
通讯机构：
[Wen, Zubiao] Jiangxi Normal Univ, Coll Chem & Chem Engineer, Nanchang 330022, Peoples R China.
摘要：
An aqueous rechargeable battery system is assembled by using metallic zinc and Na(0.95)MnO2 as the negative and positive electrodes, respectively. It is cheap and environmentally friendly, and its energy density is 78 Wh kg(-1). Its cycling performance is very good with only 8% capacity loss after 1000 cycles at 4 C between 1 and 2 V.
摘要：
Notably, many significant breakthroughs for a new generation of supercapacitors have been reported in recent years, related to theoretical understanding, material synthesis and device designs. Herein, we summarize the state-of-the-art progress toward mechanisms, new materials, and novel device designs for supercapacitors. Firstly, fundamental understanding of the mechanism is mainly focused on the relationship between the structural properties of electrode materials and their electrochemical performances based on some in situ characterization techniques and simulations. Secondly, some emerging electrode materials are discussed, including metal-organic frameworks (MOFs), covalent organic frameworks (COFs), MXenes, metal nitrides, black phosphorus, LaMnO3, and RbAg4I5/graphite. Thirdly, the device innovations for the next generation of supercapacitors are provided successively, mainly emphasizing flow supercapacitors, alternating current (AC) line-filtering supercapacitors, redox electrolyte enhanced supercapacitors, metal ion hybrid supercapacitors, micro-supercapacitors (fiber, plane and three-dimensional) and multifunctional supercapacitors including electrochromic supercapacitors, self-healing supercapacitors, piezoelectric supercapacitors, shape-memory supercapacitors, thermal self-protective supercapacitors, thermal self-charging supercapacitors, and photo self-charging supercapacitors. Finally, the future developments and key technical challenges are highlighted regarding further research in this thriving field.
期刊：
Enzyme and Microbial Technology,2009年44(1):17-23 ISSN：0141-0229
通讯作者：
Zhao, X.(zhaoxb04@mails.tsinghua.edu.cn)
作者机构：
[Zhao, Xuebing; Liu, Dehua] Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China;[Peng, Feng] College of Science, Hunan Agricultural University, Changsha, 410028, China;[Cheng, Keke] Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
摘要：
The enzymatic digestibility of sugarcane bagasse was greatly increased by alkali (NaOH)-peracetic acid (PAA) pretreatment under mild conditions. The effects of several factors affecting the pretreatment were investigated. It was found that when bagasse was pre-pretreated by 10% (based on initial dry materials) NaOH with 3:1 liquid-to-solid ratio at 90 degrees C for 1.5 h and further delignified by 10% peracetic acid (based on initial dry materials) at 75 degrees C for 2.5 h, the yield of reducing sugars reached 92.04% by enzymatic hydrolysis for 120 h with cellulase loading of 15 FPU/g solid. Compared with acid and alkali pretreatment, alkali-PAA pretreatment could be conducted under milder conditions and was more effective for delignification with less carbohydrates being degraded in the pretreatment process. Alkaline stage played an important role for partial delignification, swelling fibers and subsequently reducing PAA loading. No loss of cellulase activity (FPA) was observed in the liquid phase for alkali-PAA pretreated bagasse after enzymatic hydrolysis for 120 h. (C) 2008 Elsevier Inc. All rights reserved.
期刊：
Bioprocess and Biosystems Engineering,2012年35(6):993-1004 ISSN：1615-7591
通讯作者：
Zhao, X.(zhaoxb@mail.tsinghua.edu.cn)
作者机构：
[Zhao, Xuebing; Du, Wei; Liu, Dehua] Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;[Liu, Canming; Peng, Feng] College of Science, Hunan Agricultural University, Changsha 410028, China
摘要：
Microbial lipid produced using yeast fermentation with inexpensive carbon sources such as lignocellulosic hydrolyzate can be an alternative feedstock for biodiesel production. Several inhibitors that can be generated during acid hydrolysis of lignocellulose were added solely or together into the culture medium to study their individual inhibitory actions and their synergistic effects on the growth and lipid accumulation of oleaginous yeast Rhodosporidium toruloides. When the inhibitors were present in isolation in the medium, to obtain a high cell biomass accumulation, the concentrations of formic acid, acetic acid, furfural and vanillin should be lower than 2, 5, 0.5 and 1.5 g/L, respectively. However, the synergistic effects of these compounds could dramatically decrease the minimum critical inhibitory concentrations leading to significant growth and lipid production inhibitions. Unlike the above-cited inhibitors, sodium lignosulphonate had no negative influence on biomass accumulation when its concentration was in the range of 0.5-2.0 g/L; in effect, it was found to facilitate cell growth and sugar-to-lipid conversion. The fatty acid compositional profile of the yeast lipid was in the compositional range of various plant oils and animal tallow. Finally, the crude yeast lipid from bagasse hydrolyzate could be well converted into fatty acid methyl ester (FAME, biodiesel) by enzymatic transesterification in a tert-butanol system with biodiesel yield of 67.2% and lipid-to-biodiesel conversion of 88.4%.
作者机构：
[Zuo, Tong-Tong; Ye, Huan; Li, Nian-Wu; Yin, Ya-Xia; Yang, Chun-Peng; Guo, Yu-Guo] CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China;[Zuo, Tong-Tong; Ye, Huan; Yin, Ya-Xia; Guo, Yu-Guo] School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China;[Wu, Xiong-Wei] College of Science, Hunan Agricultural University, Changsha, 410128, P. R. China
通讯机构：
[Guo, Yu-Guo] Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China.;[Guo, Yu-Guo] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China.;[Wu, Xiong-Wei] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.
关键词：
3D current collectors;graphitized carbon fibers;high areal capacity;lithium anodes
作者：
Zhou, Zhi;Zhou, Nan;Xia, Mao;Yokoyama, Meiso;Hintzen, H. T. (Bert)
期刊：
Journal of Materials Chemistry C,2016年4(39):9143-9161 ISSN：2050-7526
通讯作者：
Zhou, N
作者机构：
[Zhou, Zhi; Zhou, Nan; Xia, Mao] College of Science, Hunan Agricultural University, Furong District, Changsha, Hunan Province, 410128, China;[Yokoyama, Meiso] Department of Electronic Engineering, I Shou University, Kaohsing City, 84001, China;[Hintzen, H. T. (Bert)] Group Luminescent Materials, Section Fundamental Aspects of Materials and Energy, Faculty of Applied Sciences, Delft University of Technology, Netherlands
关键词：
Application prospect - Elevated temperature - Excitation and emission spectra - Luminescence properties - Luminescent material - Preparation process - Red emitting phosphor - White light emitting diodes
期刊：
Energy and Environmental Science,2016年9(12):3570-3611 ISSN：1754-5692
通讯作者：
Wu, YP
作者机构：
[Li, Chunyang; Wang, Faxing; Wu, Yuping; Zhu, Yusong; Liu, Xiang; Fu, Lijun] College of Energy and Institute for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu Province, 211816, China;[Wu, Yuping; Wu, Xiongwei] College of Science, Hunan Agriculture University, Changsha, China;[Wu, Yuping] Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
关键词：
Cell voltages - Disordered carbon - Energy density - Gel polymer electrolytes - High energy densities - Positive electrodes - Quasi-solid state - Sodium ions
作者机构：
[Xia, Mao; Xiong, Xiang; Zhang, Hongbo] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.;[Wu, Yufan; Su, Yifeng; Zhou, Zhi; Zhou, Nan; Li, Yiran] Hunan Agr Univ, Coll Sci, 1 Nongda Rd, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zhang, Hongbo; Xiong, Xiang] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.
关键词：
Lithium ion batteries;Silicon monoxide;Fluidization thermal chemical vapor deposition;Dispersibility
摘要：
The traditional preparation method of silicon monoxide (SiO) electrode is suffer from easy to agglomerate, rigour synthesis conditions and high cost, which seriously impede its application in power battery. In order to restrain aggregation or cake of powder particles during heating reaction and improve the dispersion performance of SiO powders, we adopt a novel fluidization thermal chemical vapor deposition (FTCVD) synthesis strategy. The strategy of this study is carried out in a kilogram-scale fluidization bed reactor. This approach is simple, manageable, inexpensive and scalable-productive, which can use for a large-scale production and commercial application. Here, the SiO@C composite through low cost micron-scale SiO powders as raw material no further grinding. The SiO@C anode material shows a high capacity of 501 mAh g(-1) after 300 cycles at a current density of 1.2 A g(-1), and an initial coulomb efficiency of 82% and high capacity retention of 93.3%. The new method can be applied to a large-scale production and commercial application.
作者机构：
[Xiao-yang Zhou] Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China;[Gui-ping Liao; Fang Wang] Agricultural Information Institute, Hunan Agricultural University, Changsha 410128, China;[Fang Wang; Wen Shi] Science College, Hunan Agricultural University, Changsha 410128, China
关键词：
Cross correlations - Detrended cross-correlation analysis - Load-time series - Long-term correlations - Multi fractals - Multifractal theory - Operating data - Power markets
作者机构：
[Wang, Haiyan; Tang, Yougen; Qiao, Hang; Chen, Jiajie; Li, Jingsha; Zhang, Hui] College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;[Huang, Chenghuan] Hunan Changyuan Lico Co., Ltd., Changsha 410205, China;[Zhou, Nan] College of Science, Hunan Agricultural University, Changsha 410128, China
通讯机构：
[Zhang, Hui] College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China. ygtang@csu.edu.cn
摘要：
High-performance, low cost catalyst for oxygen reduction reaction (ORR) remains a big challenge. Herein, nanostructured NiCo2O4/CNTs hybrid was proposed as a high-performance catalyst for metal/air battery for the first time. The well-formed NiCo2O4/CNTs hybrid was studied by steady-state linear polarization curves and galvanostatic discharge curves in comparison with CNTs-free NiCo2O4 and commercial carbon-supported Pt. Because of the synergistic effect, NiCo2O4/CNTs hybrid exhibited significant improvement of catalytic performance in comparison with NiCo2O4 or CNTs alone, even outperforming Pt/C hybrid in ORR process. In addition, the benefits of Ni incorporation were demonstrated by the improved catalytic performance of NiCo2O4/CNTs compared to Co3O4/CNTs, which should be attributed to improved electrical conductivity and new, highly efficient, active sites created by Ni cation incorporation into the spinel structure. NiCo2O4/CNTs hybrid could be used as a promising catalyst for high power metal/air battery.
期刊：
Journal of Power Sources,2015年280:640-648 ISSN：0378-7753
通讯作者：
Wang, HY
作者机构：
[Wang, Haiyan; Tang, Yougen; Chen, Jiajie; Zhang, Hui] College of Chemistry and Chemical Engineering, Central South University, Changsha, China;[Wang, Shuangyin] College of Chemistry and Chemical Engineering, Hunan University, Changsha, China;[He, Kejian] Advanced Research Centre, Central South University, Changsha, China;[Li, Huiyong] College of Science, Hunan Agricultural University, Changsha, China
通讯机构：
[Wang, Haiyan] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
