Covalent Hybridization of Thiolated Graphene Sheet and Platinum Nanoparticles for Electrocatalytic Oxygen Reduction Reaction

被引：34

作者：

Ahmed, Mohammad Shamsuddin

Kim, Daekun

Han, Hyoung Soon

Jeong, Haesang

Jeon, Seungwon ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2012年 / 12卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

Covalent Bonding; Electrocatalyst; Oxygen Reduction Reaction; Thiolated Graphene Sheet; Phosphate Buffer Solution; FUNCTIONALIZED GRAPHENE; OXIDE; CATALYSTS; SURFACE; ALLOY;

D O I：

10.1166/jnn.2012.6674

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A covalently bonded thiolated graphene sheet-supported platinum electrocatalyst (GOS-Pt) has synthesized for electrochemical oxygen reduction reaction (ORR) in neutral media. The catalyst's structural features are characterized by transmission electron microscopy (TEM), energy dispersive X-ray (EDX), and X-ray photoelectron spectroscopy (XPS). Its activity towards the ORR has investigated by using cyclic voltammetry (CV), rotating disk electrode (RDE), and rotating ring disk electrode (RRDE) in 0.1 mol l(-1) phosphate buffer solution (PBS) at pH 7, which is also used to assess the catalyst's kinetic parameters. On a glassy carbon electrode (GCE), the catalyst shows a significant catalytic activity, with its electrocatalysis of O-2 reduction occurring via four-electron transfer reduction to H2O with minimal generation of H2O2.

引用

收藏

页码：8349 / 8355

页数：7

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