Citation: DONG Li-li, TONG Xi-li, WANG Ying-yong, JIN Guo-qiang, GUO Xiang-yun. Boron-doped silicon carbide supported Pt catalyst for methanol electrooxidation[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(7): 845-850. shu

Boron-doped silicon carbide supported Pt catalyst for methanol electrooxidation

1.
1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: TONG Xi-li,
Received Date: 19 December 2013
Available Online: 14 March 2014
Fund Project: 国家自然科学基金青年科学基金(21203233) (21203233)山西省青年科技研究基金(2013021011-6)。 (2013021011-6)

Boron-doped silicon carbide (B_0.1SiC) synthesized by the carbothermal reduction method was used as support to prepare Pt/B_0.1SiC catalyst by cyclic voltammtric deposition of Pt nanoparticles. The crystal structure, surface property and morphology of the catalysts were studied with X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy techniques and N₂ adsorption-desorption experiment. It is shown that B atoms have been incorporated into the SiC lattice sites by substituting Si,which increases the electrical conductivity of SiC. Pt nanoparticles uniformly dispersed on the B_0.1SiC support with an average size of 2.7 nm. The prepared Pt/B_0.1SiC had a larger electrochemically active area and exhibited higher electrocatalytic activity and stability for methanol oxidation than the Pt/SiC synthesized by the same method. This shows that B-doped SiC is a promising support for preparing high-performance methanol oxidation electrocatalysts.
- methanol electrooxidation,
- B-doped SiC,
- Pt catalyst
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