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dc.contributor.authorWang, Yanrongen
dc.contributor.authorLiu, Binen
dc.contributor.authorXiao, Songhuaen
dc.contributor.authorWang, Xinghuien
dc.contributor.authorSun, Leimengen
dc.contributor.authorLi, Hanen
dc.contributor.authorXie, Wuyuanen
dc.contributor.authorLi, Qiuhongen
dc.contributor.authorZhang, Qingen
dc.contributor.authorWang, Taihongen
dc.identifier.citationWang, Y., Liu, B., Xiao, S., Wang, X., Sun, L., Li, H., et al. (2016). Low-Temperature H2S Detection with Hierarchical Cr-Doped WO3 Microspheres . ACS Applied Materials & Interfaces, 8(15), 9674-9683.en
dc.description.abstractHierarchical Cr-doped WO3 microspheres have been successfully synthesized for efficient sensing of H2S gas at low temperatures. The hierarchical structures provide an effective gas diffusion path via well-aligned micro-, meso-, and macroporous architectures, resulting in significant enhancement in sensing response to H2S. The temperature and gas concentration dependence on the sensing properties elucidate that Cr dopants remarkably improve the response and lower the sensor’ operating temperature down to 80 °C. Under 0.1 vol % H2S, the response of Cr-doped WO3 sensor is 6 times larger than pristine WO3 sensor at 80 °C. We suggest the increasing number of oxygen vacancies created by Cr dopants to be the underlying reason for enhancement of charge carrier density and accelerated reactions with H2S.en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.relation.ispartofseriesACS Applied Materials & Interfacesen
dc.rights© 2016 American Chemical Society.en
dc.subjectCr Dopanten
dc.titleLow-Temperature H2S Detection with Hierarchical Cr-Doped WO3 Microspheresen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.contributor.researchNanoelectronics Centre of Excellenceen
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