文献类型：期刊文献

英文题名：Controlled one-step synthesis of Pt decorated octahedral Fe3O4 and its excellent catalytic performance for CO oxidation

作者：Li, Gengnan[1];Li, Liang[1];Wu, Binghan[1];Li, Jinxia[2];Yuan, Yuan[1];Shi, Jianlin[1,3]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2015

卷号：7

期号：42

起止页码：17855

外文期刊名：NANOSCALE

收录：;EI(收录号：20154401468883);WOS:【SCI-EXPANDED(收录号:WOS:000363650700033)】；

基金：This study was supported by the National Basic Research Program of China 2013CB933201.

语种：英文

外文关键词：Catalyst activity - Catalytic oxidation - Moisture - Potassium hydroxide - Reaction intermediates - Platinum - Precipitation (chemical)

摘要：A facile one-step co-precipitation method has been applied for the synthesis of a Pt decorated octahedral Fe3O4 catalyst. The simple addition of a Pt4+ and Fe2+ mixture into a KOH solution leads to the simultaneous formation of an octahedral Fe3O4 and in situ reduction of Pt4+. HAADF-STEM analysis demonstrates the good dispersion of the Pt species on the Fe3O4 (111) plane, and the resulting material exhibits excellent catalytic activity for CO oxidation under moisture conditions. The inevitably existing moisture contributes to the formation of reaction intermediate [COOH] and hence promotes the catalytic activity, which has been proved through in situ DRIFTS analysis.