文献类型：期刊文章

作　　者：洪锦德[1] 刘子豪[1,2] 维拉库玛[1] 吴培豪[1] 刘端祺[1] 刘尚斌[1,3]

机构地区：[1]"中央"研究院原子与分子科学研究所,台湾台北10617 [2]"国立"台湾科技大学化学工程系,台湾台北10607 [3]"国立"台湾师范大学化学系,台湾台北10617

出　　处：《Chinese Journal of Catalysis》

基　　金：supported by the Ministry of Science and Technology(NSC98-2113-M001-017-MY3,NSC101-2113-M001-020-MY3),Taiwan,China~~

年　　份：2016

卷　　号：37

期　　号：1

起止页码：43-53

语　　种：中文

收录情况：AJ、BDHX、BDHX2014、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EI、JST、RSC、SCI(收录号：WOS:000368043100006)、SCI-EXPANDED(收录号：WOS:000368043100006)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：The deposition onto an ordered mesoporous carbon（OMC）support of well dispersed PtM（M = Ru,Fe,Mo）alloy nanoparticles（NPs）were synthesized by a direct replication method using SBA-15 as the hard template,furfuryl alcohol and trimethylbeneze as the primary carbon sources,and metal acetylacetonate as the alloying metal precursor and secondary carbon source.The physicochemical properties of the PtM-OMC catalysts were characterized by N2 adsorption-desorption,X-ray diffraction,transmission electron microscopy,X-ray absorption near edge structure,and extended X-ray absorption fine structure.The alloy PtM NPs have an average size of 2-3 nm and were well dispersed in the pore channels of the OMC support.The second metal（M）in the PtM NPs was mostly in the reduced state,and formed a typical core（Pt）-shell（M）structure.Cyclic voltammetry measurements showed that these PtM-OMC electrodes had excellent electrocatalytic activities and tolerance to CO poisoning during the methanol oxidation reaction,which surpassed those of typical activated carbon-supported PtRu catalysts.In particular,the PtFe-OMC catalyst,which exhibited the best performance,can be a practical anodic electrocatalyst in direct methanol fuel cells due to its superior stability,excellent CO tolerance,and low production cost.

关 键 词：Ordered mesoporous carbon  Platinum-based electrocatalysts  Methanol oxidation reaction  X-ray absorption spectroscopy  Core-shell alloy nanoparticles  Carbon monoxide-stripping  VOLTAMMETRY Fuel cells  

分 类 号：O643.36] TM911.4[化学类]