期刊
NANO ENERGY
卷 8, 期 -, 页码 52-61出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.05.016
关键词
Truncated hexagonal pyramid (THP); Tungsten carbide; Graphene; Oxygen reduction; Microwave-assisted method
类别
资金
- National Natural Science Foundation of China [U1034003]
- National Natural Science Foundation of Guangdong Province [U1034003]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20110171110024]
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.
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