Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation

ZHOU Yang; HU Xian-chao; LIU Xi-hui; QU Hui-nan; WEN He-rui; YU Chang-lin

Volume 43 Issue 02

Feb. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(02): 251-256

ZHOU Yang, HU Xian-chao, LIU Xi-hui, QU Hui-nan, WEN He-rui, YU Chang-lin. Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2015, 43(02): 251-256.

Citation:

ZHOU Yang, HU Xian-chao, LIU Xi-hui, QU Hui-nan, WEN He-rui, YU Chang-lin. Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2015, 43(02): 251-256.

Citation:

ZHOU Yang, HU Xian-chao, LIU Xi-hui, QU Hui-nan, WEN He-rui, YU Chang-lin. Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2015, 43(02): 251-256.

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Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation

1.
Engineering Research Center of High-Efficiency Development and Application Technology of Tungsten Resources, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2.
Metallurgical and Chemical Engineering Institute, Jiangxi University of Science and Technology, Ganzhou 341000, China;
3.
Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310032, China

Received Date: 2014-08-04
Rev Recd Date: 2014-10-22
Publish Date: 2015-02-28

Abstract

Abstract

Hollow dendritic mesoporous tungsten trioxide (d-WO₃) was synthesized by combining the hydrothermal method with the template-sacrificing method; with d-WO₃ as a support, Pt/d-WO₃ catalyst was prepared through an improved liquid phase reduction method. The Pt/d-WO₃ catalyst was characterized by XRD, BET and TEM and its electrocatalytic activity and stability towards methanol electro-oxidation were investigated by cyclic voltammetry and chronoamperometry. The results indicated that d-WO₃ exhibits hollow microsphere dendritic structure with a length of 6 μm and a width of 2 μm; Pt nanoparticles with a size of 7.2 nm were highly dispersed on the surface of d-WO₃. The nitrogen physisorption on d-WO₃ displays type IV isotherms, which are typical for the mesoporous materials. Moreover, d-WO₃ shows a BET surface area of 24 m²/g, with a large number of pores around 20~120 nm. The as-prepared Pt/d-WO₃ catalyst exhibits higher electrocatalytic activity and better stability in methanol electro-oxidation in comparison with the Pt/WO₃ and Pt/C catalysts. The enhanced catalytic performance of Pt/d-WO₃ is attributed to its unique hollow mesoporous structure and the double function, which greatly accelerates the dehydrogenation of methanol on Pt.
- direct methanol fuel cell,
- methanol electro-oxidation,
- tungsten trioxide,
- platinum supported catalyst,
- electro-catalysis

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References

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