文献类型：期刊文献

英文题名：Facile synthesis of holey graphene-supported Pt catalysts for direct methanol electro-oxidation

作者：Zhou, Lihui[1];Wang, Yongxiang[1];Tang, Jing[1];Li, Jinxia[1];Wang, Shaolei[1];Wang, Ying[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：247

起止页码：116

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20171503549651);WOS:【SCI-EXPANDED(收录号:WOS:000402947000015)】；

基金：This work was partly supported by the National Natural Science Foundation of China (Project No. 21305046).

语种：英文

外文关键词：Holey graphene; Pt; Catalysts; Methanol; Electro-oxidation

摘要：A simple synthetic method was developed to produce holey graphene with in-plane nanopores by a fast thermal expansion of graphene oxide (GO) in air and further thermal reduction in N-2 flow at 900 degrees C. The as-synthesized holey graphene nanosheets (HGN) shows meso-macroporous structure and higher surface area than chemically reduced graphene oxide (CRGO) by using hydrazine hydrate. The catalysts of HGN-900 supported Pt nanoparticles (Pt/HGN-900) were further prepared through in-situ chemical co-reduction and applied in the electro-oxidation of methanol. The electrocatalytic performance of catalysts was investigated by cyclic voltammetry (CV) and chronoamperometry (CA) analysis. The results indicate that the catalytic activity of Pt/HGN-10min-900 (377.5 mA mg(pt)(-1)) is bout 1.83 and 2.77 times higher than that of Pt/CRGO-900 (206.1 mA mg(pt)(-1)) and Pt/XC-72 (136.2 mA mg(pt)(-1)) catalysts in 0.5 mol L-1 H2SO4 and 1.0 mol L-1 CH3OH, and Pt/HGN-900 catalysts show higher stable current density compared to that of Pt/XC-72 and Pt/CRGO-900 catalysts. (C) 2017 Elsevier Inc. All rights reserved.