Issue 13, 2019

Reductive-heat-treated platinum tungsten oxide catalyst with improved CO oxidation activity and CO gas sensing property

Abstract

In this report, a reductive-heat-treated platinum tungsten oxide catalyst was prepared to improve the CO electro-oxidation activity and employed in the electrochemical sensor. Tungsten oxide was proved to be an effective co-catalyst for CO sensing and the strong interaction between platinum and tungsten oxide has been enhanced by the reductive heat treatment. As a result, the significant negative shift of CO oxidation potential was confirmed by an electrochemical characterization. Further, the sensing performance of the as-prepared catalyst was investigated by means of the portable CO sensor device, which showed higher sensitivity, faster response time and good linearity within 50 ppm CO.

Graphical abstract: Reductive-heat-treated platinum tungsten oxide catalyst with improved CO oxidation activity and CO gas sensing property

Supplementary files

Article information

Article type
Paper
Submitted
31 Jan 2019
Accepted
28 Feb 2019
First published
28 Feb 2019

Anal. Methods, 2019,11, 1811-1815

Reductive-heat-treated platinum tungsten oxide catalyst with improved CO oxidation activity and CO gas sensing property

S. Liu, L. Liang, Q. Zhang, C. Liu, W. Xing and X. Dong, Anal. Methods, 2019, 11, 1811 DOI: 10.1039/C9AY00232D

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