催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (10): 932-936.

• 研究论文 • 上一篇    

PtRu纳米线的合成及其在直接甲醇燃料电池阳极中的催化活性

孙世国1,3,徐恒泳1,唐水花1,郭军松1,李焕巧1,曹雷1,周冰2,辛勤1,孙公权1   

  1. 1 中国科学院大连化学物理研究所, 辽宁大连 116023; 2 Headwaters Nanokinetix公司, 劳伦斯维尔, 纽约 08648, 美国; 3 中国科学院研究生院, 北京 100049
  • 收稿日期:2006-10-25 出版日期:2006-10-25 发布日期:2010-11-28

Synthesis of PtRu Nanowires and Their Catalytic Activity in the Anode of Direct Methanol Fuel Cells

SUN Shiguo1,3, XU Hengyong1, TANG Shuihua1, GUO Junsong1, LI Huanqiao1, CAO Lei1 , ZHOU Bing2, XIN Qin1, SUN Gongquan1*   

  1. 1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Headwaters Nanokinetix Inc., Lawrenceville, NY 08648, USA; 3 Graduate University of The Chinese Academy of Sciences, Beijing 100049, China
  • Received:2006-10-25 Online:2006-10-25 Published:2010-11-28

PDF

849

被引次数

44

摘要： 分别以SBA-15和MCM-41介孔分子筛作模板剂,采用浸渍还原法制备了纵横比及合金度不同的双组元PtRu纳米线和纳米棒电催化剂. 透射电镜、 X射线衍射表征和电化学测试结果表明, PtRu纳米线具有较高的合金度和较大的纵横比,在甲醇硫酸溶液中表现出更好的电催化活性. 初步探讨了PtRu纳米线催化剂的合金度和纵横比对其电催化活性和电极性能的影响.

关键词: 铂, 钌, 纳米线, 电催化剂, SBA-15, MCM-41, 介孔分子筛, 直接甲醇燃料电池

Abstract: PtRu nanowires and nanorods with different alloy extents and aspect ratios were synthesized by impregnating and reducing Pt and Ru precursors using SBA-15 and MCM-41 mesoporous molecular sieves as the template, respectively. The results of X-ray powder diffraction, transmission electron microscopy, cyclic voltammetry, and linear sweep voltammetry demonstrated that the PtRu nanowires synthesized using SBA-15 as the template had a higher alloy extent, larger aspect ratio, and better electrocatalytic activity in a methanol and sulfuric acid solution than the PtRu nanorods synthesized using MCM-41 template. The effects of alloy extent and aspect ratio of PtRu electrocatalysts on the catalytic activity and anode performance of direct methanol fuel cells were discussed.

Key words: platinum, ruthenium, nanowire, electrocatalyst, SBA-15, MCM-41, mesoporous molecular sieve, direct methanol fuel cell