Highly dispersive platinum nanoparticles supporting on polyaniline modified three dimensional graphene and catalyzing methanol oxidation

被引：23
作者：
Wang, Yanli [1 ,3 ]
Li, Zhongshui [1 ,2 ]
Xu, Shuhong [1 ]
Xie, Yixin [1 ]
Lin, Shen [1 ,2 ]
机构：
[1] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350007, Fujian, Peoples R China
[2] Fujian Normal Univ, Fujian Key Lab Polymer Mat, Fuzhou 350007, Fujian, Peoples R China
[3] Fujian Normal Univ, Coll Phys & Energy, Fuzhou 350117, Fujian, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2018年 / 102卷
基金：
中国国家自然科学基金;
关键词：
Platinum; Three dimensional graphene; Polyaniline; Methanol oxidation; Electrocatalysis; PHOTO-SYNERGISTIC CATALYSIS; ONE-POT SYNTHESIS; EFFICIENT ELECTROCATALYTIC OXIDATION; PT/POLYINDOLES COMPOSITE CATALYSTS; FORMIC-ACID OXIDATION; REDUCED GRAPHENE; FACILE SYNTHESIS; FUNCTIONALIZED GRAPHENE; FUEL-CELLS; OXYGEN REDUCTION;
D O I：
10.1016/j.materresbull.2018.02.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Direct methanol fuel cells have been attracting serious attention due to its high power density and low pollution, and huge effort has focused on its electrode catalysts. Here, a hydrothermal process was used to synthesize Pt/ three dimensional graphene (polyaniline) catalyst (Pt/3D-GNs (PANI)), in which PtCl42- and graphene oxide (GO) were reduced synchronously. Especially, aniline was polymerized to form polyaniline (PAM) in situ, catalyzed by pre-generated Pt. After cooling by liquid nitrogen, graphene sheets (GNs) were converted into three dimensional (3D) corrugated graphene. The Introduction of PANI promotes formation of 3D graphene structure and favors optimal distribution of Pt particles. Synergistic effect of 3D corrugated graphene structure, highly dispersive Pt nanopartilces and fast electron transfer of support makes Pt/3D-GNs (PANI) have superior electrocatalysis for methanol oxidation. Electrochemical tests show that Pt/3D-GNs (PANI) exhibits much higher electrocatalytic activity (1172 mA mg(-1)), better stability and improved CO tolerance in comparison with commercial Pt/C.
引用
收藏
页码：172 / 179
页数：8
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