标题:SnO2 core-shell hollow microspheres co-modification with Au and NiO nanoparticles for acetone gas sensing
作者:Wang X.; Liu F.; Chen X.; Lu G.; Song X.; Tian J.; Cui H.; Zhang G.;等
作者机构:[Wang, X] School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;[ Liu, F] Schoo 更多
通讯作者:Wang, X(xzwang@sdust.edu.cn)
通讯作者地址:[Wang, X] School of Materials Science and Engineering, Shandong University of Science and TechnologyChina;
来源:Powder Technology
出版年:2020
卷:364
页码:159-166
DOI:10.1016/j.powtec.2020.02.006
关键词:Co-modification; Core-shell structure; Gas sensor; Heterojunction; Tin oxide
摘要:SnO2 core-shell hollow microspheres co-modified with Au and NiO nanoparticles (Au-NiO@SnO2) were successfully fabricated for use as an acetone gas sensor. The SnO2 core-shell hollow microspheres were prepared by a facile chemical precipitation method using tin tetrachloride pentahydrate (SnCl4·5H2O) and 4-methylimidazole as the primary raw materials. The co-modification with Au and NiO nanoparticles was carried out by a simple chemical reduction approach. Compared with Au@SnO2, NiO@SnO2, and pure SnO2, the Au-NiO@SnO2 core-shell hollow microspheres exhibited enhanced gas sensing properties toward acetone including high response, fast response-recovery speed, good selectivity, low detection limit, and work stability. The improved gas sensing performance was attributed to the unique SnO2 core-shell hollow microsphere structure, the p-n heterojunction between NiO and SnO2, and the catalytic action of Au nanoparticles. © 2020 Elsevier B.V.
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079290212&doi=10.1016%2fj.powtec.2020.02.006&partnerID=40&md5=39514a0f38944e2f4e41e547203f779d
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