https://doi.org/10.15255/KUI.2017.028
Published: Kem. Ind. 67 (1-2) (2018) 19–27
Paper reference number: KUI-28/2017
Paper type: Original scientific paper
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Mesoporous PtSnO2/C Catalyst with Enhanced Catalytic Activity for Ethanol Electro-oxidation

S. Y. Chen, L. Shi and L. Wang

Abstract

In this paper, we report the synthesis, characterization, and electrochemical evaluation of a mesoporous PtSnO₂/C catalyst, called PtSnO₂(M)/C, with a nominal Pt : Sn ratio of 3 : 1. Brunauer–Emmett–Teller and transmission electron microscopy characterizations showed the obvious mesoporous structure of SnO₂ in PtSnO₂(M)/C catalyst. X-ray photoelectron spectroscopy analysis exhibited the interaction between Pt and mesoporous SnO₂. Compared with Pt/C and commercial PtSnO₂/C catalysts, PtSnO₂(M)/C catalyst has a lower active site, but higher catalytic activity for ethanol electro-oxidation reaction (EOR). The enhanced activity could be attributed to Pt nanoparticles deposited on mesoporous SnO₂ that could decrease the amount of poisonous intermediates produced during EOR by the interaction between Pt and mesoporous SnO₂.

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Keywords

ethanol electro-oxidation reaction, Pt-Sn catalyst, mesoporous SnO2, enhanced catalytic activity