Directly anchoring Ag single atoms on α-MnO2 nanorods as efficient oxygen reduction catalysts for Mg-air fuel cell
作者：
Li, Guangxing;Jiang, Min;Liao, Qin;Ding, Ruida;Gao, Yuanhang;...
期刊：
Journal of Alloys and Compounds ,2021年858:157672 ISSN：0925-8388
通讯作者：
He, Hao
作者机构：
[He, Hao; Ding, Ruida; Gao, Yuanhang; Liao, Qin; Jiang, Linwu; Li, Guangxing; Zhang, Dina; Chen, Shuguang] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha, Hunan, Peoples R China.;[Jiang, Min] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China.
通讯机构：
[He, Hao] C;Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha, Hunan, Peoples R China.
关键词：
Atoms;Catalyst activity;Cost effectiveness;Costs;Electrolytes;Electrolytic reduction;Electron transport properties;Manganese oxide;Nanocatalysts;Nanorods;Oxygen vacancies;Silver;Discharge performance;Half-wave potential;High power density;Large-scale applications;Neutral electrolytes;Oxygen Reduction;Oxygen reduction catalysts;Reversible hydrogen electrodes;Fuel cells
摘要：
Neutral electrolyte-based Mg-air fuel cell is a promising alternative of power sources due to low cost, high specific energy and eco-friendly. However, developing high-efficiency and low-cost oxygen reduction catalysts to facilitate the large-scale application of metal air fuel cells remains a significant challenge. In this work, Ag single atoms are directly anchored onto the surface of α-MnO2 nanorods to enhance the oxygen reduction performance in Mg-air fuel cell. The decoration of atomic Ag significantly improved the catalytic activity of α-MnO2 due to the increase in content of Mn (III) and oxygen vacancies. The Ag decorated α-MnO2 (Ag@α-MnO2) with an extreme low Ag content of 1.53 wt% demonstrates a half-wave potential of 0.85 V (vs. reversible hydrogen electrode), a limited current density of 5.8 mA cm−2 and a typical four-electron transfer pathway which is close to those of commercial Pt/C. Furthermore, it exhibits better stability and anti-poisoning capability than those of Pt/C. The Mg-air fuel cell containing Ag@α-MnO2 displayed a high power density of 107.2 mW cm−2 at current density of 140.1 mA cm−2 as well as an outstanding discharge performance. This work provides new ideas for preparing efficient and cost-effective ORR catalyst and promote the large-scale commercialization in metal-air fuel cells. © 2020 Elsevier B.V.
语种：
英文
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Ni_3S_2 nanorods growing directly on Ni foam for all-solid-state asymmetric supercapacitor and efficient overall water splitting
作者：
Wu, Baoxin;Qian, Hao;Nie, Zhongwu;Luo, Zhongping;Wu, Zixu;...
期刊：
能源化学(英文) ,2020年46(07):178-186 ISSN：2095-4956
通讯作者：
Chen, Shuguang;Zhang, Feifei
作者机构：
[He, Hao; Qian, Hao; Nie, Zhongwu; Liu, Peng; Wu, Zixu; Wu, Baoxin; Luo, Zhongping; Chen, Shuguang] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.;[Wu, Jianghong] Shenzhen Technol Univ, Coll Hlth Sci & Environm Engn, Shenzhen 518118, Guangdong, Peoples R China.;[Zhang, Feifei] Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117576, Singapore.
通讯机构：
[Chen, Shuguang] C;[Zhang, Feifei] N;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.;Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117576, Singapore.
关键词：
Additives;Catalysts;Electrocatalysis;Electrodes;Hydrogen evolution reaction;Nanorods;Nickel;Oxygen evolution reaction;Potassium hydroxide;Precious metal compounds;Precious metals;Refractory metal compounds;Solid electrolytes;Supercapacitor;All-solid state;Asymmetric supercapacitor;Capacitance retention;Cycling stability;Multifunctional additives;Ni3S2;Non-noble metal catalysts;Water splitting;Nickel compounds
摘要：
Transition metal compounds are attractive for their significant applications in supercapacitors and as non-noble metal catalysts for electrochemical water splitting. Herein, we develop Ni3S2 nanorods growing directly on Ni foam, which act as multifunctional additive-free Ni3S2@Ni electrode for supercapacitor and overall water splitting. Based on PVA-KOH gel electrolyte, the assembled all-solid-state Ni3S2@Ni//AC asymmetric supercapacitor delivers a high areal energy density of 0.52 mWh cm−2 at an areal power density of 9.02 mW cm−2, and exhibits an excellent cycling stability with a capacitance retention ratio of 89% after 10000 GCD cycles at a current density of 30 mA cm−2. For hydrogen evolution reaction and oxygen evolution reaction in 1 M KOH, Ni3S2@Ni electrode achieves a benchmark of 10 mA cm−2 at overpotentials of 82 mV and 310 mV, respectively. Furthermore, the assembled Ni3S2@Ni||Ni3S2@Ni electrolyzer for overall water splitting attains a current density of 10 mA cm−2 at 1.61 V. The in-situ synthesis of Ni3S2@Ni electrode enriches the applications of additive-free transition metal compounds in high-performance energy storage devices and efficient electrocatalysis. © 2019
语种：
英文
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Enhancing Oxygen Reduction Reaction Activity of α -MnO2Nanowires through Ag Doping
作者：
Wu, Zixu;Li, Guangxing;Liao, Qin;Ding, Ruida;Zuo, Xuze;...
期刊：
NANO ,2020年15(9):2050115 ISSN：1793-2920
通讯作者：
He, Hao;Chen, Shuguang
作者机构：
[He, Hao; Liu, Qilin; Ding, Ruida; Liao, Qin; He, H; Chen, Shuguang; Wu, Zixu; Li, Guangxing; Zuo, Xuze] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[He, H; Chen, SG] C;Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Catalyst activity;Electrolytic reduction;Fuel cells;Manganese oxide;Oxides;Oxygen reduction reaction;Silver;Silver oxides;Catalytic performance;Enhanced catalytic activity;Fuel cell application;Half-wave potential;Hydrothermal methods;Large-scale applications;Manganese oxide catalyst;Reaction pathways;Oxygen vacancies
摘要：
Enhancing the catalytic activity of manganese oxide in oxygen reduction reaction (ORR) is a key issue for its large-scale application in metal-air fuel cells. Ag-doped α-MnO2 nanowires without Ag or Ag2O have been successfully synthesized via a facile hydrothermal method, and the changes in both the structure and electrochemical catalytic performances after Ag doping are investigated. Compared with the pristine α-MnO2, the as-prepared Ag-doped MnO2 exhibits a significantly enhanced catalytic activity in both ORR and Mg-air fuel cell application. With Ag/Mn ratio of 1:25, Ag-doped MnO2 exhibits a typical 4e-reaction pathway and presents a 163 mV higher half-wave potential than that of the pristine α-MnO2. Furthermore, it demonstrates a power density of 75.1mWcm-2 at current density of 134.5mAcm-2 in the Mg-air fuel cells. The enhanced ORR performances are considered to be contributed from the activation of surface lattice oxygen, the improvement in conductivity and the increase in oxygen vacancies of α-MnO2. These findings provide new understanding for developing high-performance manganese oxide catalysts. © 2020 World Scientific Publishing Company.
语种：
英文
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A new approach to fabricate polyimidazolium salt (PIMS) coatings with efficient antifouling and antibacterial properties
作者：
Liang, Jingshi;She, Jueqin;He, Hao;Fan, Zheqiong;Chen, Shuguang;...
期刊：
Applied Surface Science ,2019年478:770-778 ISSN：0169-4332
通讯作者：
Liu, Bo
作者机构：
[He, Hao; Liu, Bo; Fan, Zheqiong; Li, Jianghua; Liang, Jingshi; She, Jueqin; Chen, Shuguang] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Liu, Bo] C;Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
会议名称：
2018（第3届）抗菌科学与技术论坛
会议时间：
2018-11-24
会议地点：
中国北京
关键词：
Antibacterial;Antibiofilm;Debus-Radziszewski;Polyimidazolium salt
摘要：
Bacterial infection has become the major problem shared by all countries around the world at present, especially, bacterial biofilm and medical implant-associated infections become even more difficult to eradicate by their robust matrix structure, making them 1000-fold more resistant to conventional antibiotics. Therefore, it appears necessary to carry out a potent antibacterial polymeric coating with excellent antibacterial and antibiofilm performance with low coat as well as good biocompatibility. In this work, we report an innovative strategy to prepare an antibacterial coating on poly(dimethylsiloxane) (PDMS) substrate with cationic polyimidazolium salts (PIMS), using epoxy resin as curing agent, combining with surface radical polymerization of acrylic acid (AA) and Debus−Radziszewski reaction of formaldehyde, glyoxal, and chitosan. These results of In Vitro antibacterial assay, antibiofilm, hemolytic activity and In Vitro cytotoxicity test showed this antibacterial coating has good antibacterial and antibiofilm performance and biocompatibility. © 2019 Elsevier B.V.
语种：
英文
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助推创新能力培养的材料类选修课改革实践
作者：
刘鹏;叶昌;陈曙光;杨现锋;李海斌
期刊：
教育现代化 ,2019年(49):42-44 ISSN：2095-8420
作者机构：
长沙理工大学材料科学与工程学院
关键词：
新工科;材料类选修课;创新能力培养;研讨式教学;科教融合
摘要：
培养创新型卓越工程人才是发展新工科的重要任务之一。本研究面向战略性新兴产业推行材料类选修课的教学改革,以在线开放课程建设引领"翻转课堂"的教学模式,以问题解决为导向实施研讨式教学改革,构建了关注学习过程的成绩评价体系,形成了"课堂教学"与"课外科技创新"相互促进的联动机制,凸显了以产业、学科和科研的发展成果反哺教学的科教融合特色,在学生的知识更新、思维拓展、工程训练和实践创新等方面取得了显著成效。
语种：
中文
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An asymmetric supercapacitor using sandwich-like NiS/NiTe/Ni positive electrode exhibits a super-long cycle life exceeding 200 000 cycles
作者：
Chen, Shuguang* ;Wu, Baoxin;Qian, Hao;Wu, Zixu;Liu, Peng;...
期刊：
Journal of Power Sources ,2019年438:227000 ISSN：0378-7753
通讯作者：
Chen, Shuguang;Liu, Bo
作者机构：
[He, Hao; Qian, Hao; Li, Fujin; Liu, Peng; Wu, Zixu; Wu, Baoxin; Chen, Shuguang] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.;[Wu, Jianghong] Shenzhen Technol Univ, Coll Hlth Sci & Environm Engn, Shenzhen 518118, Guangdong, Peoples R China.;[Liu, Bo] Michigan Technol Univ, Dept Biomed Engn, Houghton, MI 49931 USA.
通讯机构：
[Chen, Shuguang] C;[Liu, Bo] M;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.;Michigan Technol Univ, Dept Biomed Engn, Houghton, MI 49931 USA.
关键词：
Buffer layers;Durability;Electrodes;Nickel;Nickel sulfates;Supercapacitor;Tellurium compounds;Asymmetric supercapacitor;Cyclic stability;High energy densities;NiTe;Pseudo-capacitive materials;Structural synergy;Volumetric expansion;Volumetric shrinkage;Sulfur compounds
摘要：
Supercapacitor with high energy density and super-long cyclic durability is attractive for the rechargeable energy storage devices. The combination of multiple pseudo-capacitive materials is favorable for improving the energy density of supercapacitor, but the rationally designed electrode structures are highly desirable for achieving the super-long cyclic durability. Here we realize a novel hierarchical NiS/NiTe/Ni positive electrode for supercapacitor, and the assembled asymmetric supercapacitor using the positive electrode demonstrates a super-long cycle life exceeding 200 000 cycles. In the positive electrode, a porous NiTe inner layer acts as the volumetric stain buffer layer between a rigid Ni substrate and a spongy NiS outer layer. In particular, the initiation of volumetric expansion from NiTe inner layer to NiS outer layer, along with the proceeding of volumetric shrinkage from the outer to the inner layer occurring in sequence on the positive electrode play crucial roles in the super-long cycle life, for which sheds a new light on the design/synthesis of multiple pseudo-capacitive materials to achieve the outstanding cyclic stability of supercapacitors. © 2019 Elsevier B.V.
语种：
英文
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In Situ Growing of Metallic Cu on Cu2O Nanowires for Improved Photocatalytic Performance
作者：
Li, Haibin* ;Jiang, Peng;Zhang, Weibing;Chen, Shuguang;Li, Fujin
期刊：
Nanoscience and Nanotechnology Letters ,2019年11(1):31-37 ISSN：1941-4900
通讯作者：
Li, Haibin
作者机构：
[Zhang, Weibing; Li, Fujin; Li, Haibin; Jiang, Peng; Chen, Shuguang] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Li, Haibin] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
关键词：
Hydrothermal;Cuprous Oxide;Nanowire;Photocatalysis;Nanocomposites
摘要：
In this work, a facile one-step hydrothermal route was demonstrated for the fabrication of Cu/Cu2O composite nanowires. Metallic Cu nanoparticles were formed via in-situ reduction on the surface of Cu2O nanowires. The investigation of scanning electron microscopy and transmission electron microscopy revealed that well-defined Cu/Cu2O composite nanowires, with diameters around 60 nm and lengths of about several microns, were formed at 100 degrees C in the presence of PVP with glucose as a reductant. Moreover, Cu nanoparticles, with diameters less than 30 nm, were highly dispersed and strongly anchored on the surface of Cu2O nanowires, forming close contact. We found that PVP played a key role in the anisotropic growth of Cu/Cu2O nanowires. The mechanism was briefly discussed. The as-prepared Cu/Cu2O composite nanowires with a suitable amount of Cu showed a further improvement on the photocatalytic efficiency for degradation of MB, probably due to the Schottky junction formed at the interface between Cu2O and metallic Cu, and the Surface plasmon resonance of metallic Cu nanoparticles.
语种：
英文
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新工科建设背景下材料类专业选修课的教学改革思考
作者：
刘鹏;杨现锋;叶昌;李海斌;陈曙光
期刊：
教育教学论坛 ,2019年(14):145-146 ISSN：1674-9324
作者机构：
长沙理工大学 材料科学与工程学院,长沙,410114;[陈曙光; 杨现锋; 李海斌; 刘鹏; 叶昌] 长沙理工大学
关键词：
新工科;材料类专业;专业选修课;教学改革
摘要：
新工科建设对于提升我国高等院校人才培养质量具有重要意义。本文针对材料类专业高年级本科生的学习特点,深入分析了专业选修课教学在新工科背景下面临的主要挑战。在课堂教学实践中,以培养学生的创新思维与工程实践能力为目标,提出教学设计中的关键问题与教学方法的实施技巧,调动信息化手段激发学生的学习积极性,增设实践环节培养学生的工程思维,提高学生利用专业选修课知识解决实际工程问题的能力。
语种：
中文
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Hydrothermal Synthesis of BiVO4@Cu2O Core-Shell n-p Heterojunction for Enhanced Visible-Light Photocatalytic Performance
作者：
Li, Haibin* ;Jiang, Peng;Zhang, Weibing;Chen, Shuguang;Li, Fujin
期刊：
Nanoscience and Nanotechnology Letters ,2018年10(4):451-460 ISSN：1941-4900
通讯作者：
Li, Haibin
作者机构：
[Zhang, Weibing; Li, Fujin; Li, Haibin; Jiang, Peng; Chen, Shuguang] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Li, Haibin] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
关键词：
Heterojunction;BiVO4;Cu2O;Core-Shell;Photocatalysis
摘要：
In this study, BiVO4@Cu2O core-shell n-p heterojunctions based on BiVO4 nanospheres were synthesized via a template-free hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS) analyses confirmed the core-shell structure of the as-obtained samples. A possible mechanism of Cu2O shell formation on the surface of BiVO4 nanosphere was proposed based on the characterization results, which involved a deposition-reduction-crystallization process. The as-prepared BiVO4@Cu2O core-shell nanospheres exhibited enhanced photocatalytic activity compared to BiVO4 and Cu2O on the degradation of Rhodamine B under visible light irradiation, which could be attributed to the synergic effect on the separation and transfer of electrons and holes at the interface of BiVO4 and Cu2O. The possible photocatalytic mechanism was proposed based on the experimental results and calculated energy band positions.
语种：
英文
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3D meso/macroporous Ni3S2@Ni composite electrode for high-performance supercapacitor
作者：
Chen, Shuguang* ;Li, Yuhan;Wu, Baoxin;Wu, Zixu;Li, Fujin;...
期刊：
Electrochimica Acta ,2018年275:40-49 ISSN：0013-4686
通讯作者：
Chen, Shuguang
作者机构：
[Li, Fujin; Li, Haibin; Liu, Peng; Wu, Zixu; Wu, Baoxin; Li, Yuhan; Chen, Shuguang; Wu, Jianghong] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Chen, Shuguang] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
关键词：
Ni3S2;Sulfuration;Supercapacitor;Formation mechanism
摘要：
Ni3S2@Ni composite electrode for supercapacitor is synthesized via a one-step solvothermal treatment of Ni foam at 120 degrees C, exhibiting a 3D meso/macroporous network structure. The structure contains Ni3S2 nanosheets with 15-20 nm in thickness and meso/macropores with an average pore size of 24.69 nm, and its formation is regulated through the slow release of S2- ions and the solid/liquid interfacial reactions in absolute ethanol. At a current density of 17.15 A g(-1), the composite electrode demonstrates a high specific capacitance of 945.71 F g(-1), and at various current densities below 17.15 A g(-1), it retains capacitance retention ratios above 100% after 2000 charge/discharge cycles. A two-step oxidation and three-step reverse reduction process occurs during the reversible Faradaic reaction of Ni3S2 in KOH aqueous solution, which is due to the valence transitions of Ni-0 in Ni3S2 between Ni-0 and Ni3+. The homogeneous cracking in Ni3S2 layer is a critical factor for achieving its long-term cycling stability, however, the cycling results in its amorphization. An asymmetric supercapacitor is assembled using Ni3S2@Ni composite electrode as the positive electrode and Ni foam as the negative electrode, which delivers an energy density of 55.79 Wh kg(-1) at the power density of 938.98 W kg(-1). (c) 2018 Elsevier Ltd. All rights reserved.
语种：
英文
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Enhanced photocatalytic activity of Te-doped Bi2MoO6 under visible light irradiation: Effective separation of photogenerated carriers resulted from inhomogeneous lattice distortion and improved electron capturing ability
作者：
Chen, Shuguang* ;Li, Yuhan;Wu, Zixu;Wu, Baoxin;Li, Haibin;...
期刊：
Journal of Solid State Chemistry ,2017年249:124-130 ISSN：0022-4596
通讯作者：
Chen, Shuguang
作者机构：
[Li, Fujin; Li, Haibin; Wu, Zixu; Wu, Baoxin; Li, Yuhan; Chen, Shuguang] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构：
[Chen, Shuguang] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Hunan, Peoples R China.
关键词：
Aromatic compounds;Energy gap;Irradiation;Mechanisms;Photocatalysis;Photocatalysts;Photodegradation;Rate constants;First-order rate constants;Hydrothermally synthesized;Lattice distortions;Methylene blue degradations;Photocatalytic activities;Photogenerated carriers;Photogenerated electrons;Visible-light irradiation;Light
摘要：
Te-doped Bi<inf>2</inf>MoO<inf>6</inf>photocatalyst was hydrothermally synthesized, and nonmetal atoms Te were homogeneously incorporated into Bi<inf>2</inf>MoO<inf>6</inf>lattice with the substitution of Te<sup>4+</sup>to Mo<sup>6+</sup>. With increasing Te-doping concentration in Bi<inf>2</inf>MoO<inf>6</inf>, no detectable band-gap narrowing but more and more severe inhomogeneous lattice distortions were determined. The activity of Bi<inf>2</inf>MoO<inf>6</inf>photocatalyst was evaluated through methylene blue degradation under visible light irradiation (λ>410 nm) and was greatly enhanced by Te-doping. When Te-doped Bi<inf>2</inf>MoO<inf>6</inf>was synthesized at Te/Mo molar ratio of 7.5%, a maximum first-order rate constant of methylene blue degradation was obtained. The inhomogeneous lattice distortion generated an internal dipole moment, and the holes generated with the substitution of Te<sup>4+</sup>to Mo<sup>6+</sup>acted as the capturing centers of photogenerated electrons, thus the effective separation of photogenerated carriers was facilitated to result in a relatively high concentration of holes on the surface of Te-doped Bi<inf>2</inf>MoO<inf>6</inf>to be favorable for the efficient methylene blue degradation. ©2017 Elsevier Inc.
语种：
英文
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无机非金属材料工程专业《专业综合实验》课程的教学实践
作者：
杨现锋;廖红卫;徐协文;陈曙光
期刊：
科学时代 ,2014年(12):384-385 ISSN：1005-250X
作者机构：
长沙理工大学物理与电子科学学院无机非金属材料教研室;[徐协文; 陈曙光; 杨现锋; 廖红卫] 长沙理工大学
关键词：
无机非金属材料;综合实验;实践教学
摘要：
综合实验课程可以弥补传统实践教学的不足，更有利于培养学生的创新意识，工程意识和科学研究能力。本文从项目化的教学内容设计、工程化的实践教学理念以及弹性化的课程考核方法三个方面论述了无机非金属材料工程专业综合实验课程的教学实践。
语种：
中文
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Preparation and characterization of CuS hollow spheres
作者：
Huang, Yangfeng;Xiao, Hanning* ;Chen, Shuguang;Wang, Chao
期刊：
Ceramics International ,2009年35(2):905-907 ISSN：0272-8842
通讯作者：
Xiao, Hanning
作者机构：
[Xiao, Hanning; Wang, Chao; Huang, Yangfeng] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Xiao, Hanning; Chen, Shuguang] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.
通讯机构：
[Xiao, Hanning] H;Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
CuS;Hollow spheres;Characterization
摘要：
CuS hollow spheres have been successfully prepared using styrene-acrylic acid copolymer (PSA) latex particles as template. The process involved the deposition of inorganic coatings on the surface of PSA latex particles and subsequent removal of the latex particles by dispersing in toluene. The synthesized products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and UV-vis absorption spectroscopy. The results showed the wall thickness of CuS shell to be about 20 nm and the pore diameter to be about 150 nm. The possible formation mechanism of CuS hollow spheres has been proposed. © 2008 Elsevier Ltd and Techna Group S.r.l.
语种：
英文
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Shape-controlled growth of In(OH)3 crystals synthesized by diglycol-mediated solvothermal process
作者：
Chen, S. G.* ;Huang, Y. F.;Cheng, Y.;Xia, Q.;Liao, H. W.;...
期刊：
Materials Letters ,2008年62(10-11):1634-1637 ISSN：0167-577X
通讯作者：
Chen, S. G.
作者机构：
[Chen, S. G.; Liao, H. W.; Long, C. G.; Xia, Q.; Cheng, Y.] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.;[Huang, Y. F.] Hunan Univ, Sch Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Chen, S. G.] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.
关键词：
Crystal growth;Crystal structure;Phase structure;Solvation;X ray powder diffraction;Crystal directions;Indium hydroxide;Shape controlled growth;Solvothermal processes;Indium compounds
摘要：
In(OH)3 and InOOH crystals were synthesized at different temperatures by diglycol-mediated solvothermal processes. Their phase structures, morphologies and growth mechanisms were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and chemical analysis. A small quantity of ((H2O)3In)Cl3 was observed in In(OH)3 crystals, which resulted in formation of In(OH)3 crystals with complicated shapes and morphologies. In(OH)3 grew along [1 0 0] direction, while ((H2O)3In)Cl3 grew preferentially along several crystal directions. In-situ transformation from both In(OH)3 and ((H2O)3In)Cl3 to InOOH developed at temperature higher than 140°C, consequently InOOH nanoparticles partly inherited the morphologies of In(OH)3 nanorods. © 2007 Elsevier B.V. All rights reserved.
语种：
英文
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Synthesis and characterization of cuprous sulfide crystals with novel morphology
作者：
Chen, S. G.* ;Huang, Y. F.;Liu, Y. Q.;Xia, Q.;Liao, H. W.;...
期刊：
Materials Letters ,2008年62(16):2503-2506 ISSN：0167-577X
通讯作者：
Chen, S. G.
作者机构：
[Chen, S. G.; Liao, H. W.; Long, C. G.; Liu, Y. Q.; Xia, Q.] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.;[Huang, Y. F.] Hunan Univ, Sch Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Chen, S. G.] C;Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China.
关键词：
Characterization;Crystal growth;Crystal structure;Field emission;Morphology;Scanning electron microscopy;Single crystals;Stoichiometry;Synthesis (chemical);X ray powder diffraction;Cuprous sulfide;Energy dispersion spectrometers;Transmission electron microscopes;Copper compounds
摘要：
Cuprous sulfide (Cu2-xS) crystals in different stoichiometries were synthesized by hydro- and solvo-thermal methods at 125°C using Na2S2O3 as sulfur source in pure water, mixed solvents of ethylenediamine (en) and water, and pure en, respectively. The products were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersion spectrometer (EDS), transmission electron microscope (TEM) and selected area electronic diffraction (SAED). Owing to different sulfur sources, crystal structures and morphologies of cuprous sulfides were different from those developed by some former researchers. Novel twelve-fold symmetrical Cu7S4 single crystals were synthesized at an en/water volume ratio of 3:1, and they were built up by two layers of about 80-100nm in thickness. Moreover, the possible growth process had been discussed based on the analyses of detailed configuration of the products. © 2007 Elsevier B.V. All rights reserved.
语种：
英文
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ABS汽车防撞护栏材料的研制及应用
作者：
周拥仔;龙春光;华熳煜;陈曙光;戴春霞
期刊：
工程塑料应用 ,2008年36(6):50-52 ISSN：1001-3539
作者机构：
[周拥仔; 龙春光; 华熳煜; 陈曙光; 戴春霞] 长沙理工大学材料科学与工程学院
关键词：
汽车护栏;防撞材料;（丙烯腈／丁二烯／苯乙烯）共聚物
摘要：
用正交实验设计和挤出-注射成型方法制备了纳米CaCO+3、钛酸钾晶须、丁腈橡胶改性（丙烯腈／丁二烯／苯乙烯）共聚物（ABS）复合材料，并以缺口冲击强度和弯曲弹性模量为主要指标，通过对正交实验结果的极差和方差分析得到了最佳配方，最后以其为基础制备了防撞护栏材料。结果表明，用挤出-注射成型方法制备ABS复合材料是可行的，正交实验设计、极差和方差分析方法能够有效应用于复合材料的配方优化，其最优方案为A_3B_3C_2D_4，所制备ABS复合材料的缺口冲击强度、弯曲弹性模量、弯曲强度和拉伸强度分别比纯ABS提高了39．8％、176％、79．3％和20．1％。
语种：
中文
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ABS车用防撞护栏材料的制备及防撞机理研究
作者：
周拥仔;龙春光;戴春霞;陈曙光
期刊：
塑料科技 ,2008年36(2):66-69 ISSN：1005-3360
作者机构：
长沙理工大学材料科学与工程学院,湖南长沙,410076;[陈曙光; 戴春霞; 龙春光; 周拥仔] 长沙理工大学
关键词：
复合材料;防撞护栏;制备;机理;弯曲弹性模量;缺口冲击强度;纳米CACO3
摘要：
利用挤出-注塑成型方法制备了纳米CaCO3/钛酸钾晶须/丁腈橡胶/ABS汽车防撞护栏材料。通过正交设计方法对复合材料的配方进行了优化。并用扫描电镜观察萁缺口冲击断面。结果表明：按最佳配方制备的复合材料的缺口冲击强度．弯曲弹性模量，弯曲和拉伸强度分男U比纯ABS提高了39．8％，176％，79．3％和20．1％。其防撞机理表现为材料受到冲击时橡胶颗粒内部及表面产生空穴，伴之以空穴之间聚合物链的伸展和剪切而导致基体的形变，属典型的塑性变形。
语种：
中文
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少学时《无机材料研究方法》课程教学的思考与探索
作者：
陈曙光;夏清;叶昌;廖红卫
期刊：
中国科教创新导刊 ,2008年(1):46+48 ISSN：1673-9795
作者机构：
长沙理工大学材料科学与工程学院,湖南长沙,410076;[陈曙光; 廖红卫; 叶昌; 夏清] 长沙理工大学
关键词：
少学时;研究方法;教学;探索
摘要：
本文针对《无机材料研究方法》课程的特点以及少学时的限制对课程教学造成的影响等方面进行了思考和总结,并在少学时《无机材料研究方法》课程教学的过程中精炼教学内容、采取案例式教学方式以及结合现代教育手段,起到了很好的教学效果,并且为本科生毕业论文研究工作打下了良好的基础。
语种：
中文
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Preparation and spectral properties of PVP-modified ZnO nanorods
作者：
Huang, Yangfeng* ;Xiao, Hanning;Chen, Shuguang
期刊：
Key Engineering Materials ,2008年368-372:329-332 ISSN：1013-9826
通讯作者：
Huang, Yangfeng
作者机构：
[Xiao, Hanning; Huang, Yangfeng] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China.;[Xiao, Hanning; Chen, Shuguang] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410083, Peoples R China.
通讯机构：
[Huang, Yangfeng] H;Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China.
会议地点：
长沙
会议论文集名称：
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))论文集
关键词：
Fourier transform infrared spectroscopy;Hydrothermal synthesis;Photoluminescence;Scanning electron microscopy;Surface treatment;Transmission electron microscopy;X ray diffraction;Zinc oxide;Oxygen-related defects;Polyvinyl pyrrolidone;UV-shielding ability;Nanorods
摘要：
ZnO nanorods were prepared by a hydrothermal reaction in the presence or absence of PVP (polyvinyl pyrrolidone). The obtained products were characterized by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared, UV-Vis absorption (UV) spectroscopy and photoluminescence (PL) spectroscopy. The results suggest that PVP plays an important role in the preparation of ZnO nanorods. The UV absorption spectrum showed PVP increases the UV-shielding ability but doesn't influence the transparency in the visible light region. A weak UV emission at 353 nm of PL spectra exhibit the surface of ZnO nanorods is passivated and oxygen-related defects is supplied by PVP.
语种：
英文
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Cd_(1-x)Mn_xS纳米棒的水热合成及光谱性能
作者：
黄扬风;肖汉宁;陈曙光
期刊：
硅酸盐学报 ,2008年36(12):1744-1748 ISSN：0454-5648
通讯作者：
Huang, Y.(hyf9798@sohu.com)
作者机构：
[黄扬风; 肖汉宁] College of Materials Science and Engineering, Hunan University, Changsha 410082, China;[陈曙光; 肖汉宁] College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410076, China
通讯机构：
College of Materials Science and Engineering, Hunan University, China
关键词：
硫化镉纳米棒;锰离子掺杂;光学特性;水热合成
摘要：
采用水热法成功合成了Cd_(1-x)Mn)xS(x=0～0.05)纳米棒。采用扫描电镜、X射线衍射和Raman光谱表征Cd(1-x)Mn_xS的形貌和微结构,通过紫外光谱和荧光光谱表征其光学特性。结果表明:随着Mn~(2+)含量的增加,Cd_(1-x)Mn_xS纳米棒直径基本保持不变,但长度变短,形貌变得较杂乱,并且伴随产生颗粒。Mn~(2+)掺杂CdS纳米棒保持了六方CdS结构,Mn~(2+)在CdS纳米棒晶体中代替部分Cd~(2+)的位置构成置换式固溶体。Cd_(1-x)Mn_xS纳米棒的紫外吸收光谱和荧光光谱都随Mn~(2+)含量的增加而逐渐红移。
语种：
中文
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