标题:High ethanol sensitivity of Palladium/TiO2nanobelt surface heterostructures dominated by enlarged surface area and nano-Schottky junctions
作者:Wang, Dongzhou ;Zhou, Weijia ;Hu, Peiguang ;Guan, Yu ;Chen, Limei ;Li, Jianhua ;Wang, Guancong ;Liu, Hong ;Wang, Jiyang ;Cao, Guozhong ;Jiang, Huaidon 更多
作者机构:[Wang, Dongzhou ;Zhou, Weijia ;Hu, Peiguang ;Chen, Limei ;Li, Jianhua ;Wang, Guancong ;Liu, Hong ;Wang, Jiyang ;Jiang, Huaidong ] State Key Laboratory 更多
通讯作者:Liu, H
来源:Journal of Colloid and Interface Science
出版年:2012
卷:388
期:1
页码:144-150
DOI:10.1016/j.jcis.2012.08.034
摘要:TiO2nanobelts were prepared by the hydrothermal growth method. The surface of the nanobelts was coarsened by selective acid corrosion and functionalized with Pd catalyst particles. Three nanobelt samples (TiO2nanobelts, surface-coarsened TiO2nanobelts and Pd nanoparticle/TiO2nanobelt surface heterostructures) were configured as gas sensors and their sensing ability was measured. Both the surface-coarsened nanobelts and the Pd nanoparticle-decorated TiO2nanobelts exhibited dramatically improved sensitivity to ethanol vapor. Pd nanoparticle-decorated TiO2nanobelts with surface heterostructures exhibited the best sensitivity, selectivity, working temperature, response/recovery time, and reproducibility. The excellent ethanol sensing performance is attributed to the large surface area and enhancement by Schottky barrier-type junctions between the Pd nanoparticles and TiO2nanobelts. © 2012 Elsevier Inc.
收录类别:EI
资源类型:期刊论文
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