Polythiophene-WO3 hybrid architectures for low-temperature H2S detection

NCUIR > Engineering College > Institute of Materials Science and Engineering > journal & Dissertation > Item 987654321/104013

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Title:	Polythiophene-WO3 hybrid architectures for low-temperature H2S detection
Authors:	劉炯權;Bai, Shouli;Zhang, Kewei;Sun, Jianhua;Zhang, Dongfeng;Luo, Ruixian;Li, Dianqing;Liu, Chungchiun
Contributors:	工學院材料科學與工程研究所
Keywords:	H2S sensor;Polythiophene;p–n junction;WO3 architecture
Date:	2014-07-05
Issue Date:	2026-04-23 11:41:45 (UTC+8)
Publisher:	Elsevier;Elsevier B.V
Abstract:	摘要： [Display omitted] This paper describes the low-temperature detection of hydrogen sulphide (H2S) using sensors based on organic–inorganic hybrids. Nanosheet-assembled WO3 architectures were prepared by a facile hydrothermal strategy using citric acid as capping agent. The resultant WO3 was further modified with polythiophene through in-situ polymerization of the adsorbed thiophene monomers on the surface of WO3 framework. The morphology, structure and thermal stability of obtained polythiophene-WO3 (PT-WO) hybrids were investigated in detail by FESEM, XRD, FT-IR, XPS and TG analysis. It is proved that there is a strong bonding interaction between PT and WO3 due to the electron transfer from S to W. Gas-sensing tests show that the PT-WO hybrids exhibit high response, good selectivity and fast recovery to ppm-level H2S at low operating temperature of 70°C. The improvement of gas-sensing performance is attributed to the formation of p–n junction at the interface between organic PT and inorganic WO3. 出版者： Elsevier B.V 出版日期： 2014-07-05 出處： Sensors and actuators. B, Chemical, 2014-07, Vol.197, p.142-148 版權： 2014 Elsevier B.V. 識別號： ISSN: 0925-4005 識別號： EISSN: 1873-3077 識別號： DOI: 10.1016/j.snb.2014.02.038
Appears in Collections:	[Institute of Materials Science and Engineering] journal & Dissertation

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