纳米三氧化钨复合催化剂的制备及对甲醇电催化性能

doi:10.3866/PKU.WHXB201304121

物理化学学报 >> 2013, Vol. 29 >> Issue (07): 1487-1493.doi: 10.3866/PKU.WHXB201304121

纳米三氧化钨复合催化剂的制备及对甲醇电催化性能

周阳^1,2, 刘委明¹, 胡仙超^1,3, 褚有群¹, 马淳安¹

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

收稿日期:2012-12-17 修回日期:2013-04-11 发布日期:2013-06-14
通讯作者: 马淳安 E-mail:science@zjut.edu.cn
基金资助:
科技部国际科技合作重大专项(2010DFB63680); 浙江省教育厅科研项目(Y201225711)和浙江省自然科学基金重点项目(Z4100790)资助

Nano-WO₃ Composite Materials as Electro-Catalyst for Methanol Oxidation

ZHOU Yang^1,2, LIU Wei-Ming¹, HU Xian-Chao^1,3, CHU You-Qun¹, MA Chun-An¹

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, Hiangzhou 310032, P. R. China;
2 Jiangxi University of Science and Technology, Metallurgical and Chemical Engineering Institute. Ganzhou 341000, Guangxi Province, P. R. China;
3 Research Center of Analysis and Measurement; Zhejiang University of Technology, Hangzhou, 310032, P. R. China

Received:2012-12-17 Revised:2013-04-11 Published:2013-06-14
Supported by:
The project was supported by the International Science ＆ Technology Cooperation Program of China (2010DFB63680), Zhejiang Ministry of Education Foundation, China (Y201225711), and Key Project of Natural Science Foundation of Zhejiang Province, China (Z4100790).

摘要/Abstract

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

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.

Key words: Direct methanol fuel cell, Carbon nanotube, Tungsten trioxide, Electro-catalysis

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(07), 1487-1493. doi: 10.3866/PKU.WHXB201304121

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 Phys. -Chim. Sin. 2013, 29(07), 1487-1493. doi: 10.3866/PKU.WHXB201304121

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201304121

https://www.whxb.pku.edu.cn/CN/Y2013/V29/I07/1487

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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

Nano-WO₃ Composite Materials as Electro-Catalyst for Methanol Oxidation

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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

Nano-WO3 Composite Materials as Electro-Catalyst for Methanol Oxidation

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Nano-WO₃ Composite Materials as Electro-Catalyst for Methanol Oxidation