纳米三氧化钨修饰碳纳米管载铂催化剂对甲醇氧化的电催化性能

引用本文: 周阳, 褚有群, 刘委明, 马淳安. 纳米三氧化钨修饰碳纳米管载铂催化剂对甲醇氧化的电催化性能[J]. 物理化学学报, 2013, 29(02): 287-292. doi: 10.3866/PKU.WHXB201211261 shu

Citation: ZHOU Yang, CHU You-Qun, LIU Wei-Ming, MA Chun-An. Nano-WO₃ Modified Carbon Nanotube Supported Pt and Their Electrocatalytic Activity for Methanol Electro-Oxidation[J]. Acta Physico-Chimica Sinica, 2013, 29(02): 287-292. doi: 10.3866/PKU.WHXB201211261 shu

纳米三氧化钨修饰碳纳米管载铂催化剂对甲醇氧化的电催化性能

基金项目:
科技部国际科技合作重大专项(2010DFB63680) (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 (Y201225711) 和浙江省自然科学基金重点项目(Z4100790)

摘要:

采用表面修饰技术将碳纳米管(CNT)表面羧基化, 通过羧基将钨离子基团修饰到碳纳米管的外表面, 再通过高温焙烧处理将钨离子基团氧化成WO₃, 成功合成了纳米WO₃/CNT复合物, 进一步还原Pt 的前驱体而得到Pt-WO₃/CNT复合催化剂. 采用X射线粉末衍射(XRD)和透射电镜(TEM)对样品的形貌和晶型结构进行了表征, 结果表明, Pt纳米粒子为面心立方晶体结构, 均匀地分布在WO₃修饰的碳纳米管表面. 采用循环伏安(CV)和计时电流法研究了在酸性溶液中Pt-WO₃/CNT催化剂对甲醇的电催化氧化活性, 结果表明WO₃修饰的碳纳米管载铂催化剂比用混酸处理的碳纳米管载铂催化剂对甲醇呈现出更高的电催化氧化活性和更好的稳定性.

关键词:

English

Nano-WO₃ Modified Carbon Nanotube Supported Pt and Their Electrocatalytic Activity for Methanol Electro-Oxidation

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 Jiangxi University of Science and Technology, Metallurgical and Chemical Engineering Institute. Ganzhou 341000, Jiangxi Province, P. R. China
Received Date: 02 August 2012
Available Online: 14 January 2013
Fund Project:
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

Abstract:

Nano-WO₃-modified carbon nanotube supported Pt nanoparticles (Pt-WO₃/CNT) with uniform dimensions were prepared by adsorption and decomposition of ammonium meta-tungstate (AMT) on the surface of CNTs pretreated with HNO₃, and H₂PtCl₆ as the Pt precursor. The samples were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). The Pt nanoparticles had a face-centered cubic crystal structure, and were well dispersed on the external walls and ports of the WO₃/ CNTs. The electrocatalytic activity of the samples towards the oxidation of methanol was investigated using cyclic voltammetry and chronoamperometry. The results indicated that the Pt-WO₃/CNT catalysts exhibited higher electrocatalytic activity, better anti-poisoning ability, and od stability during methanol oxidation compared with Pt/CNTs used for acid oxidation treatments.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

纳米三氧化钨修饰碳纳米管载铂催化剂对甲醇氧化的电催化性能

English

Nano-WO₃ Modified Carbon Nanotube Supported Pt and Their Electrocatalytic Activity for Methanol Electro-Oxidation

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

纳米三氧化钨修饰碳纳米管载铂催化剂对甲醇氧化的电催化性能

English

Nano-WO3 Modified Carbon Nanotube Supported Pt and Their Electrocatalytic Activity for Methanol Electro-Oxidation

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Nano-WO₃ Modified Carbon Nanotube Supported Pt and Their Electrocatalytic Activity for Methanol Electro-Oxidation

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs