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J Colloid Interface Sci

Title:		Improvement of gas sensing performance for tin dioxide sensor through construction of nanostructures
Author(s):		Zhang R; Xu Z; Zhou T; Fei T; Wang R; Zhang T;
Address:		"State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China; State Key Laboratory of Transducer Technology, Shanghai 200050, PR China. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. Electronic address: ruiwang@jlu.edu.cn. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. Electronic address: zhangtong@jlu.edu.cn"
Journal Title:		J Colloid Interface Sci
Year:		2019
Volume:		20190920
Issue:
Page Number:		673 - 682
DOI:		10.1016/j.jcis.2019.09.073
ISSN/ISBN:		1095-7103 (Electronic) 0021-9797 (Linking)
Abstract:		"Rational design of tin dioxide (SnO(2)) nanomaterials with superior architectures and outstanding physicochemical capabilities is highly desirable for gas sensors. Here, three SnO(2) nanostructures with different morphologies, particles, core-shell spheres and facet-exposed crystals, are developed and further applied to track amounts of volatile organic compounds (VOCs). Porous SnO(2) core-in-hollow-shell sphere-based sensors exhibited enhanced sensing properties, especially a higher sensitivity than SnO(2) particles. The monocrystalline SnO(2) single-crystal-based sensor, which has dominant exposed (1?ª+1?ª+0) and (2?ª+2?ª+1) facets, also showed a superior sensing performance, especially faster response/recovery speed than the SnO(2) particle-based sensor. The enhanced gas-sensing properties are mainly ascribed to the structural sensitization, and these results further confirm that the SnO(2) core-shell structure and exposed single crystal exposed with high energy can provide more numerous active sites for gas molecule adsorption than that of SnO(2) particles"
Keywords:		Crystal facet Gas sensor Porous surface Tin oxide Voc;
Notes:		"PubMed-not-MEDLINEZhang, Rui Xu, Ziwei Zhou, Tingting Fei, Teng Wang, Rui Zhang, Tong eng 2019/09/29 J Colloid Interface Sci. 2019 Dec 1; 557:673-682. doi: 10.1016/j.jcis.2019.09.073. Epub 2019 Sep 20"