Reductive-heat-treated platinum tungsten oxide catalyst with improved CO oxidation activity and CO gas sensing property. Issue 13 (14th March 2019)

• Record Type: Journal Article
• Authors: Liu, Shiwei; Liang, Liang; Zhang, Qixian; Liu, Changpeng; Xing, Wei; Dong, Xiandui
• Is Part Of: Analytical methods. Volume 11:Issue 13(2019)
• Page Start: 1811
• Page End: 1815
• Publication Date: 2019-03-14
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c9ay00232d
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : Reductive-heat-treated platinum tungsten oxide presented excellent CO electro-oxidation activity and was applied in electrochemical CO gas sensing method. 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.