Chin J Chem Phys 2017 30(4) 450-456.pdf (3.76 MB)
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Fabricating core-shell WC@C/Pt structures and its enhanced performance for methanol electrooxidation

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journal contribution
posted on 09.02.2018, 14:44 authored by Zhao-Yang Chen, Long-Fa Duan, You-Qun Chu, Jiang-Feng Sheng, Wen-Feng LinWen-Feng Lin, Chun-An Ma
© 2017 Chinese Physical Society. The spray-dried spheres within a W/Pt multi-separation can be used to prepare discrete core-shell WC@C/Pt catalysts through a typical carburization production mechanism at 800 °C. In contrast with previous studies of the WC/Pt synthesis, the reaction observed here proceeds through an indirect annealing mechanism at 600 °C wherein species diffuse, thereby resulting in core-shell structure, and Pt nanoparticles were successfully dispersed in size/shape and randomly scattered across the in situ produced C spheres. Through direct carburization or at higher initial hydrochloroplatinic acid concentrations, however, complete reaction with core-shell spheres was not observed. Indirect carburization reduces the strain felt by the bonds featuring the larger WC particles and allows the motion of carbon around WC and Pt nanoparticles to be reserved, influencing the electrocatalytic performance and stability toward methanol oxidation.

Funding

This work is supported by the International Science & Technology Cooperation Program of China (No.2010DFB63680), the Natural Science Foundation of Zhejiang Province LQ15B030004) and Loughborough University and the EPSRC (EP/I013229/1).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Chinese Journal of Chemical Physics

Volume

30

Issue

4

Pages

450 - 456

Citation

CHEN, Z-Y. ...et al., 2017. Fabricating core-shell WC@C/Pt structures and its enhanced performance for methanol electrooxidation. Chinese Journal of Chemical Physics, 30(4), pp. 450-456.

Publisher

© Chinese Physical Society

Version

VoR (Version of Record)

Acceptance date

01/06/2017

Publication date

2017

Notes

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in CHEN, Z-Y. ...et al., 2017. Fabricating core-shell WC@C/Pt structures and its enhanced performance for methanol electrooxidation. Chinese Journal of Chemical Physics, 30(4), pp. 450-456. and may be found at https://doi.org/10.1063/1674-0068/30/cjcp1703026.

ISSN

1674-0068

eISSN

2327-2244

Language

en