Construction and enhanced low-temperature H2S-sensing performance of novel hierarchical CuO@WO3 nanocomposites

doi:10.1016/j.jallcom.2019.01.037

	Construction and enhanced low-temperature H2S-sensing performance of novel hierarchical CuO@WO3 nanocomposites
	Yin, Li; Qu, Geping; Guo, Peng; Zhang, Rui; Sun, Jing; Chen, Deliang
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-05-15
卷号	785 页码:367
关键词	CuO@WO3 nanocomposite Hydrogen sulfide Gas sensor Low-temperature sensing p-n heterojunction
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.01.037
文献子类	Article
英文摘要	Novel hierarchical CuO@WO3 nanocomposites with various CuO contents (0-10 wt%) were synthesized by anchoring discrete CuO nanoparticles (CuO NPs) on WO3 nanoplates under a hydrothermal condition for low-temperature detection of H2S gas. In the CuO@WO3 nanocomposite, CuO NPs are uniformly distributed on WO3 nanoplates, forming a p-n CuO/WO3 heterojunction. The CuO@WO3 nanocomposites show highly sensitive to H2S gas at a low operating-temperature range (25-100 degrees C). The 5 wt%CuO@WO3 sensor shows a high response of 830 when exposed to a 10 ppm H2S gas at 100 degrees C. At even lower temperatures (e.g., 50 degrees C and 25 degrees C), the 5 wt%CuO@WO3 sensor shows an obvious response to 1 ppm H2S, and their response time is less than 3 min. In addition, the CuO@WO3 sensor exhibits a highly selective response to H2S, compared with SO2, CO, CH4, H-2, and organic vapors, operating at 25-100 degrees C. The improvement of the CuO@WO3 sensor in H2S detection at a low operating temperature is ascribed to the unique hierarchical p-n heterojunctions formed between the CuO NPs and WO3 nanoplates. (C) 2019 Elsevier B.V. All rights reserved.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27118]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Yin, Li,Qu, Geping,Guo, Peng,et al. Construction and enhanced low-temperature H2S-sensing performance of novel hierarchical CuO@WO3 nanocomposites[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,785:367.
APA	Yin, Li,Qu, Geping,Guo, Peng,Zhang, Rui,Sun, Jing,&Chen, Deliang.(2019).Construction and enhanced low-temperature H2S-sensing performance of novel hierarchical CuO@WO3 nanocomposites.JOURNAL OF ALLOYS AND COMPOUNDS,785,367.
MLA	Yin, Li,et al."Construction and enhanced low-temperature H2S-sensing performance of novel hierarchical CuO@WO3 nanocomposites".JOURNAL OF ALLOYS AND COMPOUNDS 785(2019):367.