Formulation of intumescent flame retardant coatings containing natural-based tea saponin
作者：
Qian, Wei;Li, Xiang-Zhou* ;Wu, Zhi-Ping;Liu, Yan-Xin;Fang, Cong-Cong;...
期刊：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ,2015年63(10):2782-2788 ISSN：0021-8561
通讯作者：
Li, Xiang-Zhou
作者机构：
[Li, Xiang-Zhou; Liu, Yan-Xin; Wu, Zhi-Ping; Qian, Wei] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Li, Xiang-Zhou] Forest Area South China, State Key Lab Ecol Appl Technol, Changsha 410004, Hunan, Peoples R China.;[Qian, Wei] Guangdong Vocat Coll Environm Protect Engn, Foshan 528216, Guangdong, Peoples R China.;[Liu, Yan-Xin] Changsha Univ Sci & Technol, Sch Chem & Bioengn, Changsha 410114, Hunan, Peoples R China.;[Fang, Cong-Cong] Cent South Univ Forestry & Technol, Business Sch, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Li, Xiang-Zhou] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
tea saponin;intumescent flame retardant coatings;formulation;flame retardancy;thermal analysis
摘要：
Natural product tea saponin (TS), extracted from the nutshell of camellia (Camellia oleifera Abel, Theaceae), was introduced into intumescent flame retardant formulations as blowing agent and carbon source. The formulations of the flame retardant system were optimized to get the optimum proportion of TS, and intumescent flame retardant coatings containing tea saponin (TS-IFRCs) were then prepared. It was found that TS can significantly affect the combustion behavior and the thermal stability of TS-IFRCs evaluated by cone calorimetry and simultaneous thermal analyzer, respectively. It was shown that TS, degraded to water vapor and carbon at high temperatures, can combine with other components to form a well-developed char layer. The char layer was supposed to inhibit erosion upon exposure to heat and oxygen and enhance the flame retardancy of TS-IFRCs. In addition, the smoke release of TS-IFRCs was also studied, which provided a low amount of smoke production.
语种：
英文
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Novel application of LiCoO_2 as a high-performance candidate material for supercapacitor
作者：
Xu, Yanan;Ding, Liangzhong* ;Zhong, Tongsheng;Han, Xiao;Jiao, Lifang;...
期刊：
能源化学(英文) ,2015年24(2):193-198 ISSN：2095-4956
通讯作者：
Ding, Liangzhong
作者机构：
[Xu, Yanan; Jiao, Lifang; Yuan, Huatang; Wang, Yijing] Nankai Univ, Tianjin Key Lab Met & Mol Mat Chem, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Inst New Energy Mat Chem,Key Lab Adv Energy Mat C, Tianjin 300071, Peoples R China.;[Zhong, Tongsheng; Ding, Liangzhong] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.;[Han, Xiao] Maple Leaf Int Sch Tianjin TEDA, Tianjin 300457, Peoples R China.
通讯机构：
[Ding, Liangzhong] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
lithium cobalt oxide;hydrothermal reaction;supercapacitor;calcination
摘要：
Electrochemical performances of LiCoO2 as a candidate material for supercapacitor are systematically investigated. LiCoO2 nanomaterials are synthesized via hydrothermal reaction with consequent calcination process. And the particle size increases as the calcination temperature rises.LCO-650 sample with the largest particle size displays the maximum capacitances of 817.5 Fg-1with the most outstanding capacity retention rate of 96.8% after 2000 cycles. It is shown that large particle size is beneficial to the electrochemical and structural stability of Li CoO2 materials. We speculate that the micron-sized waste LiCoO2 materials have great potential for supercapacitor application. It may provide a novel recovered approach for spent LIBs and effectively relieve the burdens on the resource waste and environment pollution.
语种：
英文
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Silver nanoparticle gated, mesoporous silica coated gold nanorods (AuNR@MS@AgNPs): Low premature release and multifunctional cancer theranostic platform
作者：
Zhang, Zhehua;Liu, Changhui;Bai, Junhui;Wu, Cuichen;Xiao, Yue;...
期刊：
ACS Applied Materials & Interfaces ,2015年7(11):6211-6219 ISSN：1944-8244
通讯作者：
Zheng, Jing
作者机构：
[Liu, Changhui; Xiao, Yue; Bai, Junhui; Zheng, Jing; Yang, Ronghua; Li, Yinhui; Zhang, Zhehua; Tan, Weihong] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Liu, Changhui] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Yang, Ronghua] Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.;[Wu, Cuichen; Tan, Weihong] Univ Florida, Dept Chem, Ctr Res Bio Nano Interface, Gainesville, FL 32611 USA.;[Wu, Cuichen; Tan, Weihong] Univ Florida, Dept Physiol & Funct Genom, Shands Canc Ctr, Gainesville, FL 32611 USA.
通讯机构：
[Zheng, Jing] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
关键词：
mesoporous silica nanoparticles;gold nanorods;silver nanoparticle;GSH;photothermal therapy;photodynamic therapy
摘要：
Multifunctional nanoparticles integrated with an imaging module and therapeutic drugs are promising candidates for future cancer diagnosis and therapy. Mesoporous silica coated gold nanorods (AuNR@MS) have emerged as a novel multifunctional cancer theranostic platform combining the large specific surface area of mesoporous silica, which guarantees a high drug payload, and the photothermal modality of AuNRs. However, premature release and side effects of exogenous stimulus still hinder the further application of AuNR@MS. To address these issues, herein, we proposed a glutathione (GSH)-responsive multifunctional AuNR@MS nanocarrier with in situ formed silver nanoparticles (AgNPs) as the capping agent. The inner AuNR core functions as a hyperthermia agent, while the outer mesoporous silica shell exhibits the potential to allow a high drug payload, thus posing itself as an effective drug carrier. With the incorporation of targeting aptamers, the constructed nanocarriers show drug release in accordance with an intracellular GSH level with maximum drug release into tumors and minimum systemic release in the blood. Meanwhile, the photothermal effect of the AuNRs upon application to near-infrared (NIR) light led to a rapid rise in the local temperature, resulting in an enhanced cell cytotoxicity. Such a versatile theranostic system as AuNR@MS@AgNPs is expected to have a wide biomedical application and may be particularly useful for cancer therapy. © 2015 American Chemical Society.
语种：
英文
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Targeted Intracellular Controlled Drug Delivery and Tumor Therapy through in Situ Forming Ag Nanogates on Mesoporous Silica Nanocontainers
作者：
Liu, Changhui;Zheng, Jing;Deng, Li;Ma, Cheng;Li, Jishan;...
期刊：
ACS Applied Materials & Interfaces ,2015年7(22):11930-11938 ISSN：1944-8244
通讯作者：
Yang, Ronghua
作者机构：
[Deng, Li; Liu, Changhui; Yang, Sheng; Ma, Cheng; Zheng, Jing; Yang, Ronghua; Li, Yinhui; Li, Jishan] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Liu, Changhui] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Yang, Sheng; Yang, Ronghua] Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.;[Yang, Jinfeng; Wang, Jing] Cent S Univ, Xiangya Sch Med, Affiliated Canc Hosp, Changsha 410011, Hunan, Peoples R China.
通讯机构：
[Yang, Ronghua] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
关键词：
drug delivery;mesoporous silica nanoparticle;DNA;silver sphere;glutathione
摘要：
Targeting nanocontainers to the pathological zone and controlling release of their cargoes, in particular delivery of anticancer drugs to specific tumor cells in a targeted and controlled manner, remain the key challenges in drug delivery. This paper reports the development of a traceable and tumor-targeted intracellular drug release nanocontainer. The nanocontainer is obtained by in situ growth of silver nanoparticles (AgNPs) on the surfaces of mesoporous silica nanospheres (MSNs) using a DNA-templated process. Additionally, drug release from the nanopores is achieved by selective glutathione (GSH)-triggered dismantle of the AgNPs, and the concurrent fluorescence change allows real-time monitoring of drug release efficacy and facile visualization of in vivo delivery events. After being functionalized with sgc8 aptamer on the outer shell of the AgNPs, the targeted nanocontainers are delivered into acute lymphoblastic leukemia cells by aptamer-mediated recognition and endocytosis. Moreover, the GSH-responsive process presents an improvement in the cell-specific drug release and chemotherapeutic inhibition of tumor growth. © 2015 American Chemical Society.
语种：
英文
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DMAc used as a reducer for preparation of spherical silver nanoparticles with high dispersion
作者：
He Guo-wen;Li Fen-fang* ;Wen Jie-bin
期刊：
中南大学学报(英文版) ,2015年22(2):445-449 ISSN：2095-2899
通讯作者：
Li Fen-fang
作者机构：
[He Guo-wen; Li Fen-fang] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.;[He Guo-wen; Wen Jie-bin] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Wen Jie-bin] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China.
通讯机构：
[Li Fen-fang] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
关键词：
N, N-dimethylacetamide (DMAc);sliver nanoparticles;polyvinyl pyrrolidone (PVP);preparation
摘要：
A silver nanoparticle（Ag NP） with good monodispersity was produced by a convenient method for reducing of Ag NO3 with N, N-dimethylacetamide in the presence of polyvinyl pyrrolidone（PVP） as the surface modification agent. The shape and size of the Ag NP with reaction time were taken as variables. The surface plasmon band transition was monitored with reaction mixture time at different temperatures. The Ag NP crystallinity increases with the reaction time, and the reduction efficiency is very low when Ag NP solution is dealt at room temperature even after two days, while it is greatly improved at 160 °C only for 25 min. Ag NP modified by the as-synthesized PVP has a face-centered cubic crystalline structure, in which Ag NP could develop into a spherical morphology with a very narrow size distribution of 2-11 nm. The preparation provides a new reducing agent to form Ag NP with simpler operation and shorter time.
语种：
英文
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Synthesis and microstructure of a novel graft copolymer from poly(vinylidene fluoride-chlorotrifluoroethylene-trifluoroethylene)
作者：
He, Guowen;Li, Fenfang;Zhong, Tongsheng;Hao, Zeming;Li, Hengfeng*
期刊：
DESIGNED MONOMERS AND POLYMERS ,2015年18(1):19-26 ISSN：1385-772X
通讯作者：
Li, Hengfeng
作者机构：
[Li, Fenfang; He, Guowen] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.;[Zhong, Tongsheng; He, Guowen] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Li, Hengfeng; He, Guowen] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China.;[Hao, Zeming] Sany Heavy Ind Concrete Pump Inst, Changsha 410100, Hunan, Peoples R China.
通讯机构：
[Li, Hengfeng] C;Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China.
关键词：
atom transfer radical polymerization (ATRP);graft copolymer;microstructure;properties
摘要：
A novel graft copolymer of poly(vinylidene fluoride-chlorotrifluoroethylene-trifluoroethylene)-graft-poly(6-((4-cyano-4-biphenyl)oxy) hexyl methacrylate) (P(VDF-CTFE-TrFE)-graft-PCBHM) using P(VDF-CTFE-TrFE) as the initiator was successfully synthesized via atom transfer radical polymerization. It was found that the crystallinity of resultant graft copolymer increased slightly after grafting from the P(VDF-CTFE-TrFE), and the crystalline regions in the graft copolymer contained more (β phase which has all-trans chain conformation) trans chain conformation. Upon the introduction of PCBHM side chains, the thermal stability of the graft copolymer was lower than that of pristine terpolymer, but the storage modulus was enhanced significantly, which is beneficial for breakdown field-strength enhancement, and dielectric properties simultaneously decreased. © 2014 Taylor & Francis.
语种：
英文
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Effects of the steric hindrance of micropores in the hyper-cross-linked polymeric adsorbent on the adsorption of p-nitroaniline in aqueous solution
作者：
Xiao, Guqing* ;Wen, Ruimin;Wei, Dongmei;Wu, Dan
期刊：
Journal of Hazardous Materials ,2014年280:97-103 ISSN：0304-3894
通讯作者：
Xiao, Guqing
作者机构：
[Wen, Ruimin; Xiao, Guqing; Wei, Dongmei; Wu, Dan] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Guqing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
关键词：
Adsorption;Hyper-cross-linked polymeric adsorbent;Micropore;Steric hindrance;p-Nitroaniline
摘要：
A hyper-cross-linked polymeric adsorbent with "CH<inf>2</inf>phenolCH<inf>2</inf>" as the cross-linked bridge (denoted GQ-05), and another hyper-cross-linked polymeric adsorbent with "CH<inf>2</inf>p-cresolCH<inf>2</inf>" as the cross-linked bridge (denoted GQ-03) were synthesized to reveal the effect of the steric hindrance of micropores in the hyper-cross-linked polymeric adsorbent on adsorption capacity and adsorption rate of p-nitroaniline (PNA) from aqueous solution. The results of adsorption kinetics indicated the order of the adsorption rate GQ-05>GQ-03. The pseudo-first-order rate equation could describe the entire adsorption process of PNA onto GQ-05 while the equation characterized the adsorption process of GQ-03 in two stages. The order of the adsorption capacity GQ-05>GQ-03 was demonstrated by thermodynamic analysis and dynamic adsorption. The steric hindrance of micropores in the hyper-cross-linked polymeric adsorbent was a crucial factor for the order of the adsorption capacity and adsorption rate. ©2014 Elsevier B.V.
语种：
英文
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Flotation on recovery of electrode materials from spent lithium-ion batteries
作者：
文瑞明;刘长辉;游沛清;邱文辉;林毅辉
期刊：
中南大学学报(自然科学版) ,2014年45(1):40-44 ISSN：1672-7207
通讯作者：
Wen, R.(wenruiming@sohu.com)
作者机构：
[游沛清; Qiu, Wenfei; 刘长辉; 文瑞明; Lin, Yifei] College of Chemistry and Environment Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
College of Chemistry and Environment Engineering, Hunan City University, China
关键词：
浮选法;锂离子电池;钴酸锂;甲基异丁基甲醇
摘要：
采用柴油作捕收剂、甲基异丁基甲醇(MIBC)作起泡剂对锂离子电池电极材料进行浮选实验研究,考察捕收剂用量、起泡剂用量、分散剂和抑制剂种类及用量对正极材料钴酸锂回收率的影响。研究结果表明:当矿浆质量浓度为0.05 g/mL,pH 为6.0时,以0.15 mg柴油为捕收剂,0.75 mg六偏磷酸钠为分散剂,0.75 mg聚丙烯酸钠作抑制剂,0.84 mg MIBC为起泡剂,正极材料钴酸锂的回收率达93%。
语种：
中文
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Purification and characterization of white laccase from the white-rot fungus panus conchatus
作者：
Zhou, Pandeng;Fu, Chaoying;Fu, Shiyu* ;Zhan, Huaiyu
期刊：
BIORESOURCES ,2014年9(2):1964-1976 ISSN：1930-2126
通讯作者：
Fu, Shiyu
作者机构：
[Fu, Shiyu; Fu, Chaoying; Zhou, Pandeng; Zhan, Huaiyu] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China.;[Zhou, Pandeng] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Fu, Shiyu] S;S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China.
关键词：
Activity center;Copper;Iron;Panus conchatus;White laccase;White-rot fungus;Zinc
摘要：
Laccase is a kind of polyphenol oxidase having potential in applications for pulp bleaching, waste water treatment in mills, and removal of phenols in the food industry. The normal laccase from fungus or bacterial contains four copper atoms per protein molecular, imparting a blue color. Here it is reported that a white laccase is produced by a white rot fungus Panus conchatus from its solid-state fermentation. The activity center of this laccase is Cu2FeZn, which lacks the typical type-1 blue copper color. The polyacrylamide gel electrophoresis of purified laccase showed a main polypeptide with a molecular weight of about 60 kDa. Laccase substrate 2,6-dimethoxylphenol and others, such as syringaldazine, o-tolidine, and ABTS, were readily oxidized, among which the Km for syringaldazine was the highest. The isoelectric point of this enzyme was 3.6 and it was stable at temperatures below 45°C over a wide range of pH (4-12).
语种：
英文
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Treatment for phenol-containing wastewater with modified waste tea leaves
作者：
Song, Juanjuan*
期刊：
Journal of Chemical and Pharmaceutical Research ,2014年6(7):1604-1612 ISSN：0975-7384
通讯作者：
Song, Juanjuan
作者机构：
[Song, Juanjuan] School of Chemical and Environmental Engineering, Hunan City University, Yiyang, Hunan, China
摘要：
The treatment of wastewater containing middle or low concentration of phenol solution is a troublesome environment problem. In this study, tea was modified by FeCl<inf>3</inf>,AlCl<inf>3</inf>,FeSO<inf>4</inf>,and we studied the adsorption performance of modified waste tea leaves on phenol-containing waste water. FeCl3 is the best modifier, the second one is FeSO4, and the last is AlCl3. And the effects of the initial concentration, pH value, adsorption time, particle size, and temperature on adsorption capacity were investigated. Langmuir isotherm model was better to describe the isothermal adsorption of phenol. ©2014, Journal of Chemical and Pharmaceutical Research. All rights reserved.
语种：
英文
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Electrochemical Performance of alpha-LiVOPO4/Carbon Composite Material Synthesized by Sol Gel Method
作者：
Tang, Anping* ;Shen, Jie;Hu, Yongjun;Xu, Guorong;He, Donghua;...
期刊：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY ,2014年161(1):A10-A13 ISSN：0013-4651
通讯作者：
Tang, Anping
作者机构：
[Shen, Jie; Peng, Ronghua; Yi, Qingfeng; Tang, Anping; He, Donghua; Xu, Guorong] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China.;[Peng, Ronghua; Yi, Qingfeng; Tang, Anping; Xu, Guorong] Hunan Univ Sci & Technol, Minist Educ, Key Lab Theoret Chem & Mol Simulat, Xiangtan 411201, Peoples R China.;[Hu, Yongjun] Hunan City Univ, Dept Chem, Yiyang 413000, Peoples R China.
通讯机构：
[Tang, Anping] H;Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China.
摘要：
LiVOPO<inf>4</inf>/carbon composite materials were prepared at amoderate temperature of 400°C by oxalic acid assisted sol-gel technique and acetylene black acting as a carbon source. The as synthesized composite materials were characterized by XRD, SEM, galvanostatic charge-discharge and CV measurements. When tested at 0.1 C rate for Li ion insertion properties, α-LiVOPO <inf>4</inf>/ carbon composite material exhibits good cycle capability with an average capacity degradation of just 0.05 mAh/g per cycle. Additionally, when the various discharge rates were applied progressively for each of ten cycles, it shows excellent rate capability with initial discharge capacities of 138 mAh/g (0.1 C), 134 mAh/g (0.2 C), 108 mAh/g (0.5 C) and 83 mAh/g (1 C), respectively, indicating that carbon modification could enhance the electronic conductivity of LiVOPO<inf>4</inf>. ©2013 The Electrochemical Society.
语种：
英文
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Hydrogen storage behavior of 2LiBH4/MgH2 composites improved by the catalysis of CoNiB nanoparticles
作者：
Zhao, Yanping;Ding, Liangzhong* ;Zhong, Tongsheng;Yuan, Huatang;Jiao, Lifang
期刊：
International Journal of Hydrogen Energy ,2014年39(21):11055-11060 ISSN：0360-3199
通讯作者：
Ding, Liangzhong
作者机构：
[Jiao, Lifang; Yuan, Huatang; Zhao, Yanping] Nankai Univ, Inst New Energy Mat Chem, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Key Lab Adv Energy Mat Chem MOE,Tianjin Key Lab M, Tianjin 300071, Peoples R China.;[Zhong, Tongsheng; Ding, Liangzhong] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Ding, Liangzhong] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
LiBH4;Hydrogen storage;Catalysis;CoNiB
摘要：
2LiBH(4)/MgH2 system is a representative and promising reactive hydride composite for hydrogen storage. However, the high desorption temperature and sluggish desorption kinetics hamper its practical application. In our present report, we successfully introduce CoNiB nanoparticles as catalysts to improve the dehydrogenation performances of the 2LiBH(4)/MgH2 composite. The sample with CoNiB additives shows a significant desorption property. Temperature programmed desorption (TPD) measurement demonstrates that the peak decomposition temperatures of MgH2 and LiBH4 are lowered to be 315 degrees C and 417 degrees C for the CoNiB-doped 2LiBH(4)/MgH2. Isothermal dehydrogenation analysis demonstrates that approximately 10.2 wt% hydrogen can be released within 360 min at 400 degrees C. In addition, this study gives a preliminary evidence for understanding the CoNiB catalytic mechanism of 2LiBH(4)/MgH2 Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
语种：
英文
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Fabrication of a three-dimensional BiOBr/BiOI photocatalyst with enhanced visible light photocatalytic performance
作者：
Lin, Li;Huang, Manhong;Long, Liping;Sun, Zhe;Zheng, Wei;...
期刊：
Ceramics International ,2014年40(8):11493-11501 ISSN：0272-8842
通讯作者：
Chen, Donghui
作者机构：
[Chen, Donghui; Zheng, Wei; Huang, Manhong; Lin, Li; Sun, Zhe] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Long, Liping; Lin, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Chen, Donghui] D;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
关键词：
BiOBr/BiOI;Photocatalyst;Rhodamine B;Tetracycline;Visible light
摘要：
Three-dimensional (3D) BiOBr/BiOI hierarchical microsphere photocatalysts were successfully synthesized via a facile one-pot solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and N2 adsorption-desorption isotherms. The photocatalytic activity was evaluated by the photocatalytic degradation of Rhodamine B (RhB) and tetracycline (TC) under visible light irradiation (λ>420 nm). The 50% BiOBr/BiOI composite showed a higher photocatalytic removal efficiency of RhB and TC than 10% and 90% BiOBr/BiOI composites. RhB (C0=15 mg/L) was degraded completely within 40 min and over 83% of TC (C0= 40 mg/L) was degraded within 50 min using a catalyst quantity of 0.4 g/L of 50% BiOBr/BiOI. The enhanced photocatalytic activity of the 50:50 composite was attributed to effective separation of photogenerated carriers and the balance between enhanced visible light absorption and decreased valence band (VB) edge potential. © 2014 Elsevier Ltd and Techna Group S.r.l.
语种：
英文
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Novel photocatalysts of fly ash cenospheres supported BiOBr hierarchical microspheres with high photocatalytic performance
作者：
Lin, Li;Huang, Manhong* ;Long, Liping;Chen, Donghui
期刊：
Journal of Alloys and Compounds ,2014年615:929-932 ISSN：0925-8388
通讯作者：
Huang, Manhong
作者机构：
[Chen, Donghui; Huang, Manhong; Lin, Li] Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.;[Long, Liping; Lin, Li] Hunan City Univ, Sch Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Chen, Donghui] Shanghai Inst Technol, Shanghai 200235, Peoples R China.
通讯机构：
[Huang, Manhong] D;Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China.
关键词：
BiOBr;Fly-ash cenospheres;Photocatalytic;Visible light irradiation
摘要：
A novel fly-ash cenospheres (FACs) supported BiOBr hierarchical microspheres were successfully prepared via a facile one-pot solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), UV-visible diffuse reflectance spectroscopy (DRS) and N<inf>2</inf> adsorption-desorption isotherms. The results indicated that polyvinylpyrrolidone (PVP) facilitated the loading of BiOBr hierarchical microspheres. Based on the photodegradation tests under visible light irradiation (λ>420 nm), the photocatalytic property of PVP/BiOBr/FACs photocatalysts was superior to that of BiOBr/FACs. ©2014 Elsevier B.V. All rights reserved.
语种：
英文
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聚氨酯弹性体的改性及阻尼性能
作者：
朱耀东;贺国文;李衡峰;陈俊
期刊：
功能材料 ,2014年45(21):21006-21010 ISSN：1001-9731
通讯作者：
Li, Heng-Feng
作者机构：
[李衡峰; 贺国文; 朱耀东; 陈俊] School of Materials Science and Engineering, Central South University, Changsha , China;[朱耀东; 贺国文] College of Chemical and Environmental Engineering, Hunan City University, Yiyang , China
通讯机构：
[Li, H.-F.] S;School of Materials Science and Engineering, Central South University, Changsha, China
关键词：
聚氨酯弹性体;改性;阻尼性能;扩链剂;悬挂链
摘要：
将两种含悬挂链的二元醇扩链剂(受阻酚二醇(TMP-derived diol)和2,2-2,2-二羟甲基丙酸卞基酯(BHP))和选用的单甘酯(GMS)分别与4,4-二苯醚二胺(ODA)以不同摩尔比混合扩链合成新型聚氨酯弹性体。用红外(FT-IR)、热分析(DSC)、动态力学性能(DMA)来表征二醇扩链剂对聚氨酯弹性体的微相分离及阻尼性能的影响。研究结果表明,悬挂链中基团的体积越大,阻碍作用越强;受阻酚二醇的引入使聚氨酯体系的玻璃化温度升高,两相相容性增加,而GMS、BHP扩链反而使聚氨酯体系玻璃化温度降低,相分离增加;悬挂的多碳支链及受阻酚基团有利于抬升在高于玻璃化温度一定区域的阻尼值。
语种：
中文
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Nitrite reductase genes as functional markers to investigate diversity of denitrifying bacteria during agricultural waste composting
作者：
Chen, Yaoning* ;Zhou, Wei;Li, Yuanping;Zhang, Jiachao;Zeng, Guangming;...
期刊：
Applied Microbiology and Biotechnology ,2014年98(9):4233-4243 ISSN：0175-7598
通讯作者：
Chen, Yaoning
作者机构：
[Chen, Yaoning; Huang, Aizhi; Zeng, Guangming; Huang, Jingxia; Zhou, Wei; Li, Yuanping] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Chen, Yaoning; Huang, Aizhi; Zeng, Guangming; Huang, Jingxia; Zhou, Wei; Li, Yuanping] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China.;[Li, Yuanping] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.;[Zhang, Jiachao] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Chen, Yaoning] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
Composting;PCR-DGGE;Denitrifying bacteria;RDA;Phylogenetic analysis
摘要：
The purpose of this study was to investigate the diversity of denitrifier community during agricultural waste composting. The diversity and dynamics of the denitrifying genes (nirK and nirS) were determined using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). Relationships between physico-chemical parameters and denitrifying genes structures were simultaneously evaluated by redundancy analysis (RDA). Phylogenetic analysis indicated that nirK clones grouped into six clusters and nirS clones into two major clusters, respectively. The results showed a very high diversity of nir gene sequences within composting samples. RDA showed that the nirK and nirS gene structures were significantly related to pH and pile temperature (P < 0.05). Significant amounts of the variation (49.2 and 38.3 % for nirK and nirS genes, respectively) were explained by pH and pile temperature, suggesting that those two parameters were the most likely ones to influence, or be influenced by the denitrifiers harboring nirK and nirS genes. © 2014 Springer-Verlag.
语种：
英文
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Adsorption of Salicylic Acid in Aqueous Solution by a Water-Compatible Hyper-Cross-Linked Resin Functionalized with Amino-Group
作者：
Xiao, Gu-Qing* ;Li, Hua;Xu, Man-Cai
期刊：
Journal of Applied Polymer Science ,2013年127(5):3858-3863 ISSN：0021-8995
通讯作者：
Xiao, Gu-Qing
作者机构：
[Xiao, Gu-Qing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.;[Li, Hua; Xu, Man-Cai] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Xiao, Gu-Qing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
synthesis;functionalization of polymers;salicylic ACID;adsorption
摘要：
Abstract On account of the high toxicity of nitrobenzene, 1,2‐dichloroethane was used as solvent. A novel water‐compatible hyper‐cross‐linked resin functionalized with amino‐group (denoted as GQ‐04) was synthesized to remove salicylic acid (SA) in aqueous solution. The maximum adsorption capacity of SA onto GQ‐04 was observed at pH of 1.88. The adsorption capacity increased with the increasing salt concentration. The adsorption kinetic data obeyed the pseudo‐second‐order rate equation and the adsorption isotherms can be characterized by Freundlich model. The intraparticle diffusion was the main rate‐controlling step. The saturated adsorption quantity of SA was up to 119.9 mg·mL‐1 according to the dynamic adsorption at 293 K. The resin could be regenerated by the 6 BV mixed solution of 80% ethanol and 0.5 mol/L NaOH. The size matching and hydrogen bonding between GQ‐04 and SA and the micropore structure resulted in the larger adsorption capacity in comparison with XAD‐4 and H103 resin. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
语种：
英文
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金电极自组装基因分子膜的制备及电化学检测
作者：
黎媛萍;曾光明;汤琳;陈耀宁;章毅;...
期刊：
中国有色金属学报 ,2013年23(5):1345-1350 ISSN：1004-0609
通讯作者：
Zeng, G.-M.(zgming@hnu.cn)
作者机构：
[章毅; Zeng, Guang-Ming; 李贞; 汤琳; 刘灿; 陈耀宁; 庞娅; 黎媛萍] College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;[章毅; Zeng, Guang-Ming; 李贞; 汤琳; 刘灿; 陈耀宁; 庞娅; 黎媛萍] Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China;[黎媛萍] College of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
College of Environmental Science and Engineering, Hunan University, China
关键词：
修饰金电极;自组装单分子膜;基因;竞争杂交;电化学检测
摘要：
采用分子自组装技术制备巯基修饰的基因分子膜修饰金电极,用于竞争式杂交检测黄孢原毛平革菌木素过氧化物酶编码基因。通过差分脉冲伏安法、循环伏安法、交流阻抗法和电流—时间曲线法优化自组装时间和信号探针的最佳响应浓度,研究目标基因的线性检测范围和再生性能。结果表明:修饰金电极最优自组装时间为15 h,信号探针的最佳响应浓度为0.51×10~(-6) mol/L,目标基因的线性检测范围为7.51×10~(-12)-1.05×10~(-9) mol/L,检测下限为7.51×10~(-13) mol/L。该修饰电极具有良好的再生性能。
语种：
中文
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Cu2+-selective “Off–On” chemsensor based on the rhodamine derivative bearing 8-hydroxyquinoline moiety and its application in live cell imaging
作者：
Wang, Jiaoliang;Long, Liping* ;Xie, Dan;Song, Xiaofeng
期刊：
Sensors and Actuators B-Chemical ,2013年177:27-33 ISSN：0925-4005
通讯作者：
Long, Liping
作者机构：
[Wang, Jiaoliang; Xie, Dan; Song, Xiaofeng; Long, Liping] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Long, Liping] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
关键词：
Binding;Copper(II);Fluorescence chemsensor;Imaging
摘要：
A rhodamine-based fluorescence chemsensor bearing the 8-hydroxyquinoline unit is developed as a reversible turn-on chemosensor for Cu<sup>2+</sup>. It exhibits a highly sensitive fluorescent response toward Cu<sup>2+</sup> in aqueous media with an 80-fold fluorescence intensity enhancement under 10 equiv. of Cu<sup>2+</sup> added. This indicates that the synthesized chemosensor effectively avoided the fluorescence quenching for the paramagnetic nature of Cu<sup>2+</sup> via its strong binding capability toward Cu<sup>2+</sup>. The chemosensor Rh-Q exhibits a dynamic response range for Cu<sup>2+</sup> from 2 ×10<sup>-7</sup> to 5 ×10<sup>-5</sup> M, with a detection limit of 0.19 μM, and good selectivity for Cu<sup>2+</sup> over other heavy and transition metal (HTM) ions in Tris-HCl/EtOH (7:3, v/v, pH 7.4). In addition, the turn-on fluorescent change upon the addition of Cu<sup>2+</sup> is also applied in cell imaging. ©2012 Elsevier B.V. All rights reserved.
语种：
英文
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Study of dark tea residue's high efficiency absorption in treatment of Cr-bearing waste water
作者：
Song, Juanjuan
期刊：
Journal of Chemical and Pharmaceutical Research ,2013年5(11):802-810 ISSN：0975-7384
通讯作者：
Song, J.
作者机构：
[Song, Juanjuan] School of Chemical and Environmental Engineering, Hunan City University, Yiyang, Hunan, China
摘要：
As an absorbent dark tea residue can get rid of heavy metal ion effectually and do no harm to the environment. From the dynamic experiment on dark tea residue's absorption of Cr(VI), the absorption dynamic curve and absorption isothermal curve are obtained. The effects of pH value, initial concentration, dosage of residue, adsorption time and other factors on absorption are studied and the result shows that: when the pH value of the waste water is 2, the initial concentration is 100mg/L, the adsorption time is 60min, the dosage of dark tea residue is 1g, the maximum adsorption rate reaches 99.96%.The adsorption conforms with the Langmuir adsorption isotherm, it is a kind of monolayer adsorption, the adsorption kinetics curve conforms with pseudo-second-order equation. In the end discusses the development prospect of dark tea residue.
语种：
英文
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