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| 纳米三氧化钨复合催化剂的制备及对甲醇电催化性能 | |
| 引用本文： | 周阳,刘委明,胡仙超,褚有群,马淳安.纳米三氧化钨复合催化剂的制备及对甲醇电催化性能[J].物理化学学报,2013,29(7):1487-1493. |
| 作者姓名： | 周阳 刘委明 胡仙超 褚有群 马淳安 |
| 作者单位： | 1 浙江工业大学化工材料学院, 绿色化学合成技术国家重点实验室培育基地, 科技部能源材料及应用国际科技合作基地, 杭州 310032; 2 江西理工大学冶金与化学工程学院, 江西 赣州 341000; 3 浙江工业大学分析测试中心, 杭州 310032 |
| 基金项目： | The project was supported by the International Science ＆ Technology Cooperation Program of China，Zhejiang Ministry of Education Foundation;China (Z4100790).科技部国际科技合作重大专项，浙江省教育厅科研项目，浙江省自然科学基金重点项目 |
| 摘 要： | 采用浸渍沉淀法制备出WO3-碳纳米管(WO3-CNTs)纳米复合材料, 微波辅助乙二醇法在其表面负载活性成分Pt, 得到纳米Pt/WO3-CNTs 催化剂. 采用X射线衍射(XRD), 透射电子显微镜(TEM)和X射线光电子能谱(XPS)等测试手段对催化剂的结构和形貌进行表征, 结果表明Pt 纳米粒子为面心立方晶体结构, 粒径大小在3-5 nm之间, 均匀地分布在WO3-CNTs 纳米复合材料表面, 同时发现催化剂中的Pt 主要以金属态的形式存在. 采用循环伏安和计时电流法研究了在酸性溶液中Pt/WO3-CNTs 催化剂对甲醇的电催化氧化性能, 结果表明Pt/WO3-CNTs 催化剂比用硝酸处理的碳纳米管载铂催化剂(Pt/CNTs)对甲醇呈现出更高的电催化氧化活性和抗CO中毒性能. |
| 关 键 词： | 直接甲醇燃料电池 碳纳米管 三氧化钨 电催化 |
| 收稿时间： | 2012-12-17 |
| 修稿时间： | 2013-04-12 |
Nano-WO3 Composite Materials as Electro-Catalyst for Methanol Oxidation |
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| ZHOU Yang , LIU Wei-Ming , HU Xian-Chao , CHU You-Qun , MA Chun-An.Nano-WO3 Composite Materials as Electro-Catalyst for Methanol Oxidation[J].Acta Physico-Chimica Sinica,2013,29(7):1487-1493. | |
| Authors: | ZHOU Yang LIU Wei-Ming HU Xian-Chao CHU You-Qun MA Chun-An |
| Institution: | 1,* ( 1 State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, International Science & Technology Cooperation Base of Energy Materials and Application, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, P. R. China; 2 Metallurgical and Chemical Engineering Institute, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China; 3 Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310032, P. R. China) |
| Abstract: | Nano-WO3 modified carbon nanotube supported Pt nanoparticles (Pt/WO3-CNTs) with uniform dimension were prepared by impregnated precipitation method, and Pt nanoparticles were loaded on the surface of WO3-CNTs by means of microwave-assisted glycol method. X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) reveal that the Pt nanoparticles have a face-centered cubic crystal structure and are highly dispersed on the surface of WO3-modified CNTs with a narrow size distribution between 3 and 5 nm. X-ray photoelectron spectroscopy (XPS) shows that more metallic Pt is present on Pt/ WO3-CNTs than on Pt/CNTs catalyst. Compared with the Pt/CNTs catalyst without WO3 modification, the Pt/ WO3-CNTs composite catalyst not only shows relative large electrochemical active surface area, high catalyst activity toward methanol electro-oxidation, but also exhibits very high stability with apparent antiposion tolerance to the incomplete oxidized species during methanol oxidation. |
| Keywords: | Direct methanol fuel cell Carbon nanotube Tungsten trioxide Electro-catalysis |
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