| 碳材料中多层次孔对负载铂电催化活性的影响 |
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| 引用本文： | 周建华,何建平,计亚军,赵桂网,张传香,陈秀,王涛. 碳材料中多层次孔对负载铂电催化活性的影响[J]. 物理化学学报, 2008, 24(5): 839-843. DOI: 10.1016/S1872-1508(08)60037-6 |
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| 作者姓名： | 周建华 何建平 计亚军 赵桂网 张传香 陈秀 王涛 |
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| 作者单位： | College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China |
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| 基金项目： | 江苏省高新技术项目 , 航空基础科学基金 |
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| 摘 要： | 分别以商用碳黑XC-72、介孔碳CMK-5和含多层次孔的碳气凝胶HCA为载体, 微波法负载Pt纳米粒子, 在硫酸和甲醇溶液中进行循环伏安测试, 考察碳材料中多层次孔对其电催化活性的影响. 结果显示, Pt/HCA电极表现出较高的峰电流(7.5 mA·cm-2)和电化学活性面积(128.0 m2·g-1). 这可能是因为碳气凝胶具有连续但非周期性的介孔结构, 有利于Pt纳米粒子的分散以及反应物质的传质.
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| 关 键 词： | 碳气凝胶 多层次孔 铂纳米粒子 介孔 电催化活性 |
| 收稿时间： | 2007-12-03 |
| 修稿时间： | 2007-12-03 |
Influence of Hierarchical Porosity in Carbon Material on Electrocatalytic Property of Supported Pt Nanoparticles |
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| ZHOU Jian-Hua,HE Jian-Ping,JI Ya-Jun,ZHAO Gui-Wang,ZHANG Chuan-Xiang,CHEN Xiu,WANG Tao. Influence of Hierarchical Porosity in Carbon Material on Electrocatalytic Property of Supported Pt Nanoparticles[J]. Acta Physico-Chimica Sinica, 2008, 24(5): 839-843. DOI: 10.1016/S1872-1508(08)60037-6 |
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| Authors: | ZHOU Jian-Hua HE Jian-Ping JI Ya-Jun ZHAO Gui-Wang ZHANG Chuan-Xiang CHEN Xiu WANG Tao |
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| Affiliation: | College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China |
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| Abstract: | The influence of hierarchical porosity on electrocatalytic property was investigated with Pt nanoparticles supported on three types of carbon materials, namely, commercial Vulcan XC-72, ordered mesoporous carbon CMK-5, and hierarchical carbon aerogel (HCA). The electrocatalytic activity of carbon supported Pt nanoparticles was verified by cyclic voltammetry in H2SO4 and CH3OH solution. Pt/HCA presented superior performance with higher peak current (7.5 mA·cm-2) and electrochemical active area (128.0 m2·g-1). This could be attributed to the carbon aerogel with continuous but nonperiodical mesopore structure, which facilitated dispersion of Pt nanoparticles and mass transport around reactants and products. |
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| Keywords: | Carbon aerogel Hierarchical porosity Pt nanoparticles Mesopore Electrocatalytic property |
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