Promoting effects of Fe_2O_3 to Pt electrocatalysts toward methanol oxidation reaction in alkaline electrolyte

作     者：宋桂花 杨海芳 孙雅飞 王静怡 曲卫东 张强 马令娟 冯媛媛 Guihua Song;Haifang Yang;Yafei Sun;Jingyi Wang;Weidong Qu;Qiang Zhang;Lingjuan Ma;Yuanyuan Feng

作者机构：曲阜师范大学化学与化工学院山东省生命有机分析重点实验室山东曲阜273165 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2017年第38卷第3期

页      面：554-563页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(21403125,21403124) the Scientific Research Foundation for the Outstanding Young Scientist of Shandong Province(BS2011NJ009) 

主　　题：Platinum Ferric oxide Promoting effect Methanol electrooxidation reaction Alkaline electrolyte 

摘      要：Fe_2O_3 nanorods and hexagonal nanoplates were synthesized and used as the promoters for Pt electrocatalysts toward the methanol oxidation reaction（MOR） in an alkaline *** catalysts were characterized by scanning electron microscopy,transmission electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,cyclic voltammetry and *** results show that the presence of Fe_2O_3 in the electrocatalysts can promote the kinetic processes of MOR on Pt,and this promoting effect is related to the morphology of the Fe_2O_3 *** catalyst with Fe_2O_3 nanorods as the promoter（Pt-Fe_2O_3/C-R） exhibits much higher catalytic activity and stability than that with Fe_2O_3 nanoplates as the promoter（Pt-Fe_2O_3/C-P）.The mass activity and specific activity of Pt in a Pt-Fe_2O_3/C-R catalyst are 5.32 A/mgpt and 162.7 A/m^2_（Pt）,respectively,which are approximately 1.67 and 2.04 times those of the Pt-Fe_2O_3/C-P catalyst,and 4.19 and 6.16 times those of a commercial PtRu/C catalyst,*** effects between Fe_2O_3 and Pt and the high content of Pt oxides in the catalysts are responsible for the *** findings contribute not only to our understanding of the MOR mechanism but also to the development of advanced electrocatalysts with high catalytic properties for direct methanol fuel cells.