The influence of boron dopant on the electrochemical properties of graphene as an electrode material and a support for Pt catalysts

被引：36
作者：
Bo, Xiangjie [1 ]
Li, Mian [1 ]
Han, Ce [1 ]
Guo, Liping [1 ]
机构：
[1] NE Normal Univ, Fac Chem, Changchun 130024, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2013年 / 114卷
基金：
中国国家自然科学基金;
关键词：
Graphene; Boron dopant; Platinum electrocatalysts; Methanol oxidation; Defective sites; NITROGEN-DOPED GRAPHENE; OXYGEN-REDUCTION; CARBON NANOTUBE; CONTROLLABLE DEPOSITION; METHANOL OXIDATION; NANOPARTICLES; ELECTROCATALYST; OXIDE; PERFORMANCE; COMPOSITE;
D O I：
10.1016/j.electacta.2013.10.088
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Boron-doped graphene (BGR) is prepared by thermal annealing of graphene oxide (GO) in the presence of boric acid. More defective sites are introduced into GR accompanied by the doping of boron. Low electron transfer resistance towards redox probe is observed at BGR. The BGR modified electrode can effectively distinguish the anodic peaks for ascorbic acid (AA), dopamine (DA), and uric acid (UA). The defective sites of BGR can also act as anchoring sites for the deposition of Pt nanoparticles. When used as a support for Pt electrocatalysts, Pt nanoparticles with an average diameter of 3.2 nm are deposited on BGR. The doping of boron into GR facilitates the dispersion of Pt nanoparticles and increases the utilization efficiency of Pt nanoparticles. The Pt/BGR exhibits significant catalytic activity towards the oxidation of methanol. The results demonstrate that BGR is a good support for Pt catalysts or an electrode material compared with the undoped GR. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：582 / 589
页数：8
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