Highly sensitive triethylamine gas sensor by Pt-loaded p-n heterojunction Co3O4/WO3

Zhenlin Song; Jiyang Zeng; Baoye Zi; Fengying Chen; Yumin Zhang; Genlin Zhang; Zhongqi Zhu; Jin Zhang; Qingju Liu

doi:10.1088/1361-6528/ac9c08

Highly sensitive triethylamine gas sensor by Pt-loaded p-n heterojunction Co₃O₄/WO₃

Nanotechnology. 2022 Nov 7;34(4). doi: 10.1088/1361-6528/ac9c08.

Authors

Zhenlin Song¹, Jiyang Zeng¹, Baoye Zi¹, Fengying Chen¹, Yumin Zhang¹, Genlin Zhang¹, Zhongqi Zhu¹, Jin Zhang¹, Qingju Liu¹

Affiliation

¹ Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China.

PMID: 36265415
DOI: 10.1088/1361-6528/ac9c08

Abstract

Triethylamine (TEA) exists widely in production and life and is extremely volatile, which seriously endangers human health. It is required to develop high-performance TEA sensors to protect human health. We fabricated Pt-Co₃O₄/WO₃based on our previous work, and the performance was tested against volatile organic compounds. Compared with the previous work, its operating temperature was greatly reduced from 240 °C to 180 °C. The response value of Pt-Co₃O₄/WO₃was increased from 1101 to 1532 for 10 ppm TEA with good selectivity. These results show a significant step toward practical use of the Pt-Co₃O₄/WO₃sensor.

Keywords: Pt-loaded; TEA; gas sensor; p–n heterojunction.