A novel support of nano titania modified graphitized nanodiamond for Pt electrocatalyst in direct methanol fuel cell

被引：25
|
作者：
Zhao, Yuling [1 ]
Wang, Yanhui [1 ]
Zang, Jianbing [1 ]
Lu, Jing [2 ]
Xu, Xipeng [2 ]
机构：
[1] Yanshan Univ, Coll Mat Sci & Engn, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
[2] Huaqiao Uniuers, MOE Engn Res Ctr Brittle Mat Machining, Xiamen 361021, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 13期
基金：
中国国家自然科学基金;
关键词：
TiO2; Graphitized nanodiamond; Electrocatalyst; Activity; Stability; CARBON NANOTUBES; NANOPARTICLES; CATALYSTS; PLATINUM; POWDER;
D O I：
10.1016/j.ijhydene.2015.02.041
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Graphitized nanodiamond (GND) was prepared by annealing ND in a vacuum at temperature of 1300 degrees C for 2 h, followed by the synthesis of TiO2 modified GND (TiO2/GND) using a microwave hydrolysis method. TiO2/GND supported Pt (Pt/TiO2/GND) electrocatalysts were synthesized by a microwave-assisted polyol process and characterized. Pt nanoparticles (NPs) supported on Vulcan XC-72 carbon (Pt/C) and TiO2/C (Pt/TiO2/C) catalysts were obtained according to the same method for comparison. The TiO2/GND support showed much more excellent stability than carbon black and TiO2/C in acid solution, and Pt/TiO2/ GND and Pt/TiO2/C catalysts showed enhanced electrocatalytic activity for methanol oxidation and oxygen reduction due to the synergistic effect of Pt and support. It is worth mentioned that the Pt/TiO2/GND demonstrated a better durability than the other two catalysts due to the higher stability of TiO2/GND support and the anchoring effect of the TiO2 layer to Pt NPs. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4540 / 4547
页数：8
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