Investigation of Platinum Dispersed on Reduced Graphene Oxide-supported Tungsten Carbide via Sacrificial Cu Adlayers for Methanol Oxidation

作     者：Meiqin Shi Di Zhao Weiming Liu Youqun Chu Chun'an Ma 

作者机构：State Key Laboratory Breeding Base of Green Chemistry-Synthesis TechnologySchool of Chemical Engineering and Materials ScienceZhejiang University of TechnologyHangzhouZhejiang 310032China 

出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)

年 卷 期：2014年第32卷第3期

页      面：233-240页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This work was supported by International Science&Technology Cooperation Program of China(No.2010DFB63680) the National Natural Science Foundation of China(No.21376220) 

主　　题：reduced graphene oxide tungsten carbide copper platinum methanol oxidation 

摘      要：Reduced graphene oxide-supported tungsten carbide composite(WC/RGO)was prepared by program-con-trolled reduction-carburization *** electron microscope(SEM)and transmission electron micro-scope(TEM)show that WC nanoparticles with a narrow distribution(10-20 nm)are highly dispersed both on the edge and between the layers of *** then it was used as a support to load different low contents(no more than 0.4 wt%)of Pt via sacrificial Cu *** morphology and the electrocatalytic activity of the prepared catalysts were characterized by TEM and cyclic voltammograms(CV),*** results indicate that a small amount of isolated Pt atoms show low or even no activity for methanol *** the increasing deposition cycles,the content of Pt and the ensembles of neighboring Pt atoms are increased,which makes the onset potential shift nega-tively and mass current density *** results demonstrate that controllable amount of Pt can be deposited on WC/RGO by galvanic displacement with Cu,and the extent and domain of Pt loading affect the electrochemical ***,this research also provides another route to prepare a catalyst with ultra low noble metal on WC/RGO for solving the problem of high cost of the catalyst.