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稀土Eu掺杂PtRu/C催化剂及其对甲醇电氧化的性能
引用本文:安筱莎,陈德俊,周志有,汪强,樊友军,孙世刚.稀土Eu掺杂PtRu/C催化剂及其对甲醇电氧化的性能[J].物理化学学报,2010,26(5):1207-1213.
作者姓名:安筱莎  陈德俊  周志有  汪强  樊友军  孙世刚
作者单位:Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Zhuang Autonomous Region, P. R. China; State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
基金项目:国家自然科学基金,教育部留学回国人员科研启动基金;厦门大学固体表面物理化学国家重点实验室开放课题和广西研究生教育创新计划项目 
摘    要:采用化学还原和热处理方法对商业PtRu/C催化剂进行稀土Eu掺杂,制备了不同Eu含量的PtRuEux/C催化剂.透射电子显微镜(TEM)、X射线能量色散光谱(EDX)、X射线衍射(XRD)和X射线光电子能谱(XPS)等方法表征催化剂的结果表明,Eu的掺杂未改变PtRu/C催化剂的平均粒径(约为3nm),并且Eu以金属和氧化物两种形态修饰PtRu表面.循环伏安和计时电流法测试显示,PtRuEux/C催化剂较商业PtRu/C对甲醇氧化具有更高的活性,其中PtRuEu0.3/C的活性最高.运用原位傅里叶变换红外(FTIR)光谱从分子水平研究了该催化剂对甲醇电催化氧化的反应过程,检测到甲醇在催化剂上解离吸附的吸附态产物是线型吸附态CO(COL),Eu的掺杂使COL的氧化电位降低,明显提高了催化剂的活性和抗CO毒化的能力.

关 键 词:直接甲醇燃料电池  甲醇电氧化  阳极催化剂  稀土改性  原位FTIR光谱  
收稿时间:2009-09-28
修稿时间:2010-04-01

Rare Earth Eu Doped PtRu/C Catalysts and Their Properties for Methanol Electrooxidation
AN Xiao-Sha CHEN De-Jun ZHOU Zhi-You WANG Qiang FAN You-Jun, SUN Shi-Gang,College of Chemistry , Chemical Engineering,Guangxi Normal University,Guilin ,Guangxi Zhuang Autonomous Region,P.R.China,State Key Laboratory for Physical Chemistry of Solid Surfaces.Rare Earth Eu Doped PtRu/C Catalysts and Their Properties for Methanol Electrooxidation[J].Acta Physico-Chimica Sinica,2010,26(5):1207-1213.
Authors:AN Xiao-Sha CHEN De-Jun ZHOU Zhi-You WANG Qiang FAN You-Jun  SUN Shi-Gang    College of Chemistry  Chemical Engineering  Guangxi Normal University  Guilin  Guangxi Zhuang Autonomous Region  PRChina  State Key Laboratory for Physical Chemistry of Solid Surfaces
Institution:Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Zhuang Autonomous Region, P. R. China; State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
Abstract:Commercially available PtRu/C catalyst was doped with Eu by chemical reduction and sintering,resulting in PtRuEux/C catalysts with different Eu contents.The catalysts were characterized by transmission electron microscopy(TEM),energy dispersive X-ray(EDX) spectroscopy,X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).Results showed that Eu doping did not change the average size of the PtRu/C catalysts(ca 3 nm),and their surfaces were modified by both Eu metal and oxide.Cyclic voltammetry and ...
Keywords:Direct methanol fuel cell  Methanol electrooxidation  Anode catalyst  Rare earth doping  in situ FTIR spectroscopy
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