Journal
ANALYTICAL METHODS
Volume 11, Issue 13, Pages 1811-1815Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ay00232d
Keywords
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Funding
- NSFC [21433003]
- Natural Science Foundation of Jilin Province of China [20170101183JC]
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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.
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