| 以多聚甲醛为还原剂制备新型阳极Pt/CMK-3催化剂 |
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| 引用本文： | 吴伟,曹洁明,陈煜,陆天虹.以多聚甲醛为还原剂制备新型阳极Pt/CMK-3催化剂[J].催化学报,2007,28(1):17-21. |
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| 作者姓名： | 吴伟 曹洁明 陈煜 陆天虹 |
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| 作者单位： | 1. 南京航空航天大学材料科学与技术学院,江苏南京,210016
2. 南京师范大学化学与环境科学学院,江苏南京,210097 |
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| 基金项目： | 国家自然科学基金
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江苏省高技术研究发展计划项目
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南京航空航天大学校科研和教改项目 |
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| 摘 要： | 以多聚甲醛为还原剂,采用液相还原法制备了Pt/CMK-3直接甲醇燃料电池(DMFC)阳极催化剂,并采用透射电镜和X射线衍射技术对其进行了表征. 结果表明,有序介孔碳CMK-3具有规整的二维有序孔道结构,为DMFC中电子和燃料的传输提供了方便的路径,同时它较大的比表面积使得Pt纳米粒子很好地分散在其表面; Pt/CMK-3催化剂中Pt粒子的平均粒径为2.8 nm, 小于E-TEK公司的商品化Pt/XC-72和以甲醇为还原剂制备的Pt/C-M催化剂,并且粒径分布范围窄,结晶度低. 察了Pt/CMK-3催化剂对甲醇的电催化氧化性能,发现Pt/CMK-3催化剂对甲醇氧化的电催化性能优于Pt/XC-72和Pt/C-M催化剂.
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| 关 键 词： | 铂 CMK-3介孔材料 多聚甲醛 甲醇 直接甲醇燃料电池 |
| 文章编号： | 0253-9837（2007）01-0017-05 |
| 收稿时间： | 2007-01-25 |
| 修稿时间： | 2006-06-12 |
Preparation of Pt/CMK-3 Anode Catalyst for Methanol Fuel Cells Using Paraformaldehyde as Reducing Agent |
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| WU Wei,CAO Jieming,CHEN Yu,LU Tianhong.Preparation of Pt/CMK-3 Anode Catalyst for Methanol Fuel Cells Using Paraformaldehyde as Reducing Agent[J].Chinese Journal of Catalysis,2007,28(1):17-21. |
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| Authors: | WU Wei CAO Jieming CHEN Yu LU Tianhong |
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| Institution: | 1 College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China ; 2 Department of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, Jiangsu , China |
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| Abstract: | The Pt/CMK-3 anode catalyst for direct methanol fuel cells (DMFC) was prepared by the liquid reduction method using paraformaldehyde as the reducing agent. The catalyst was characterized by X-ray diffraction and transmission electron microscopy. The results showed that CMK-3 was a highly intriguing support material for DMFC because of its high surface area, uniform mesopores, and high thermal and chemical stability. The average particle size of Pt nanoparticles in Pt/CMK-3 was 2.8 nm, which was smaller than that of the commercial Pt/XC-72 catalyst from the E-TEK Corporation and that of the Pt/C-M catalyst prepared using methanol as the reducing agent. The particle size distribution of Pt/CMK-3 was narrow, and the relative crystallinity was low. The electroactivity of Pt/CMK-3 for ethanol oxidation was studied. The Pt/CMK-3 catalyst possessed higher electrocatalytic activity than Pt/XC-72 and Pt/C-M catalysts. |
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| Keywords: | platinum CMK-3 mesoporous material paraformaldehyde methanol direct methanol fuel cell |
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