Bimetallic platinum-bismuth nanoparticles prepared with silsesquioxane for enhanced electrooxidation of formic acid

被引:22
|
作者
Chen, Tingting [1 ]
Ge, Cunwang [1 ]
Zhang, Yihong [1 ]
Zhao, Qin [1 ]
Hao, Furui [1 ]
Bao, Ning [2 ]
机构
[1] Nantong Univ, Sch Chem & Chem Engn, Nantong 226019, Peoples R China
[2] Nantong Univ, Sch Publ Hlth, Nantong 226019, Peoples R China
基金
中国国家自然科学基金;
关键词
Platinum-bismuth nanoparticles; Bimetallic; Silsesquioxane; Electrooxidation; Formic acid; IRREVERSIBLY ADSORBED BISMUTH; POISON FORMATION REACTION; PD-PT NANOALLOY; CATALYTIC-ACTIVITY; FUEL-CELLS; METHANOL ELECTROOXIDATION; OXYGEN REDUCTION; CARBON; OXIDATION; PT(111);
D O I
10.1016/j.ijhydene.2015.02.019
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
Bimetallic platinum bismuth nanoparticles (Pt-BiNPs) were prepared with octa-(3-aminopropyl) silsesquioxane (OA-POSS) for high-performance electrooxidation of formic acid. Characterization of nanoparticles revealed their homogeneous-phase with blackberry-like morphology when the fraction of Bi was no less than 60%. Their electrocatalytic activity was investigated with cyclic voltammetry and chronoamperograms. The prepared bimetallic Pt-BiNPs displayed larger electrochemical surface areas, better electrocatalytic activity and more favourable durability towards electrocatalytic oxidation of formic acid compared with commercial catalysts. The improvement might be ascribed to the role of OA-POSS as the control agent of morphology and the carrier of electrocatalyst with possible corrosive resistance. This study suggested that silsesquioxane might potentially facilitate preparation of homogeneous-phase nanoscaled catalysts for direct formic acid fuel cell in practical applications. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:4548 / 4557
页数:10
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