Template-Free Pseudomorphic Synthesis of Tungsten Carbide Nanorods

被引：66

作者：

Yan, Ya ^{[1
]}

Zhang, Lan ^{[1
]}

Qi, Xiaoying ^{[3
]}

Song, Hao ^{[1
]}

Wang, Jing-Yuan ^{[2
]}

Zhang, Hua ^{[3
]}

Wang, Xin ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Residues & Resource Reclamat Ctr, Singapore 639798, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

SMALL | 2012年 / 8卷 / 21期

基金：

新加坡国家研究基金会;

关键词：

tungsten carbide; pseudomorphic transformation; nanorod-structure; electrocatalysis; OXYGEN REDUCTION; SURFACE-AREA; POTENTIAL APPLICATION; HYDROGEN EVOLUTION; METHANOL ELECTROOXIDATION; CATALYTIC-ACTIVITY; REACTION PATHWAYS; PLATINUM; ELECTROCATALYSTS; WC;

D O I：

10.1002/smll.201200877

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A unique nanorod-structured tungsten carbide material with high specific surface area of 198 m(2) g(-1) is successfully synthesized for the first time by pseudomorphic transformation of chemically synthesized WO3 nanorods through a high-temperature method. An electrocatalyst composed of Pt nanoparticles supported on WC nanorods demonstrates higher electrocatalytic activity for methanol electro-oxidation, better tolerance to CO poisoning, and superior performance for cathodic electrocatalytic hydrogen evolution than a Pt/C catalyst. This work provides a novel method to synthesize high-surface-area nanorod-structured WC materials by preparing oxide precursors with the desired external morphology, thus offering great potential for a broad range of applications of these materials in related reaction systems.

引用

页码：3350 / 3356

页数：7

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