Improving gas sensing performance by oxygen vacancies in sub-stoichiometric WO3-x

doi:10.1039/c9ra00116f

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	Improving gas sensing performance by oxygen vacancies in sub-stoichiometric WO3-x
	Yu Weiwei; Shen Zhenguang; Peng Fang; Lu Yue; Ge Meiying; Fu Xiuli; sun yan; Chen Xin; Dai Ning
刊名	RSC ADVANCES
	2019
卷号	9 期号:14 页码:7723-7728
关键词	TUNGSTEN-OXIDE SENSORS SURFACE SNO2 XPS
DOI	10.1039/c9ra00116f
英文摘要	Sub-stoichiometric WO3-x has provided an alternative platform to investigate oxygen vacancies in gas sensors based on metal-oxides. We present an experimental study on the influence of sub-stoichiometric WO3-x phase upon gas sensing performance. High-quality WO3-x nanostructures with several x values (WO3, W19O55, W5O14, W18O49) were synthesized and used to fabricate H2S gas sensors. Temperature programmed desorption of oxygen (O-2-TPD) shows that oxygen absorption behaviors of the as-prepared WO3-x nanostructures are affected by oxygen vacancies, which played a critical role in the detection of H2S at varying temperature range. We find that oxygen vacancies in sub-stoichiometric WO3-x facilitate the ionosorption process and in turn enhance the performance of the gas sensor.
WOS记录号	WOS:00046264600001
内容类型	期刊论文
源URL	[http://202.127.2.71:8080/handle/181331/12395]
专题	上海技术物理研究所_上海技物所
推荐引用方式 GB/T 7714	Yu Weiwei,Shen Zhenguang,Peng Fang,et al. Improving gas sensing performance by oxygen vacancies in sub-stoichiometric WO3-x[J]. RSC ADVANCES,2019,9(14):7723-7728.
APA	Yu Weiwei.,Shen Zhenguang.,Peng Fang.,Lu Yue.,Ge Meiying.,...&Dai Ning.(2019).Improving gas sensing performance by oxygen vacancies in sub-stoichiometric WO3-x.RSC ADVANCES,9(14),7723-7728.
MLA	Yu Weiwei,et al."Improving gas sensing performance by oxygen vacancies in sub-stoichiometric WO3-x".RSC ADVANCES 9.14(2019):7723-7728.