Synthesis of Pt and Pt-Fe nanoparticles supported on MWCNTs used as electrocatalysts in the methanol oxidation reaction

作     者：J.R.Rodriguez R.M.Félix E.A.Reynoso Y.Gochi-Ponce Y.Verde Gómez S.Fuentes Moyado G.Alonso-Núez 

作者机构：Universidad Nacional Autónoma de Mxico Centro de Nanociencias y Nanotecnología Ensenada B.C. C.P.22860 Mexico Instituto Tecnológico de Tijuana Centro de Graduados e Investigación Tijuana B.C. C.P.22000 Mexico Instituto Tecnológico de Oaxaca Departamento de Ingeniería Química y Bioquímica Oaxaca Oax. C.P.68030 Mexico Instituto Tecnológico de Cancún Av.Kabah Km.3 Cancún Q.R. C.P.77500 Mexico 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2014年第23卷第4期

页      面：483-490页

核心收录：

学科分类：081704[工学-应用化学] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by CONACyT(Project 155388 and 174689) 

主　　题：coordination complex salt MWCNTs nanoparticles catalysts electrooxidation 

摘      要：This work reports a feasible synthesis of highly-dispersed Pt and Pt-Fe nanoparticles supported on multiwall carbon nanotubes （MWCNTs） without Fe and multiwall carbon nanotubes with iron （MWCNTs-Fe） which applied as electrocatalysts for methanol electrooxidation. A Pt coordination complex salt was synthesized in an aqueous solution and it was used as precursor to prepare Pt/MWCNTs, Pt/MWCNTs-Fe, and Pt-Fe/MWCNTs using FeC12.4H20 as iron source which were named S 1, S2 and S3, respectively. The coordination complex of platinum （TOA）2PtC16 was obtained by the chemical reaction between （NH4）2PtC16 with tetraoctylammonium bromide （TOAB） and it was characterized by FT-IR and TGA. The materials were characterized by Raman spectroscopy, SEM, EDS, XRD, TEM and TGA. The electrocatalytic activity of Pt-based supported on MWCNTs in the methanol oxidation was investigated by cyclic voltammetry （CV） and chronoamperometry （CA）. Pt-Fe/MWCNTs electrocatalysts showed the highest electrocatalytic activity and stability among the tested electrocatalysts due to that the addition of ＂Fe＂ promotes the OH species adsorption on the electrocatalyst surface at low potentials, thus, enhancing the activity toward the methanol oxidation reaction （MOR）.