Pt loaded on truncated hexagonal pyramid WC/graphene for oxygen reduction reaction

被引：44

作者：

He, Chunyong ^{[1
,2
]}

Shen, Pei Kang ^{[1
,2
]}

机构：

[1] State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Engn, Guangdong Prov Key Lab Lowcarbon Chem & Energy Co, Guangzhou 510275, Guangdong, Peoples R China

来源：

NANO ENERGY | 2014年 / 8卷

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Truncated hexagonal pyramid (THP); Tungsten carbide; Graphene; Oxygen reduction; Microwave-assisted method; TUNGSTEN CARBIDE NANORODS; LOW-TEMPERATURE; HYDROGEN EVOLUTION; TRANSITION-METALS; QUANTUM DOTS; CORE-SHELL; FUEL-CELLS; GRAPHENE; CATALYSTS; NANOCRYSTALS;

D O I：

10.1016/j.nanoen.2014.05.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We report a microwave-assisted method to synthesize truncated hexagonal pyramid (THP) tungsten carbide with 5 nnn in size on graphene sheets (WCTHP/G) for the first time. The high-resolution transmission electron microscope (HRTEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) analysis confirm that the WCTHP nanoparticles are dominated by (01 (1) over bar0), (10 (1) over bar0) and (1 (1) over bar 00) facets with a preferred orientation of [0001]. The Pt loaded WC-mp/G materials show high activity and extremely high stability in electrocatalysis. This method can be developed as a general strategy for synthesizing high surface area, nanostructured transition metal carbides (TMCs) and utilizing them as active and low-cost catalysts or catalyst supports in a broad range of sustainable energy technologies. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：52 / 61

页数：10

共 45 条

[1]

Electronic confinement and coherence in patterned epitaxial graphene [J].