Alternative TitleImprovement of Oxygen-Sensing Properties of Sol-Gel TiO2 Film under Visible Light by Polyvinyl Pyrrolidone
高世安; 冼爱平; 曹丽华; 谢荣才; 尚建库
Source Publication传感技术学报
Other AbstractReducing the sensing temperature of semiconductor oxides to room temperature has been actively pursued recently. In present work, the TiO2 gas sensing thin film was prepared on the alumina substrate by a sol-gel method, in which the major raw materials were the tetrabutylorthotitanate (Ti(OBu)4) and ethanolamine (EA), while the main additive was polyvinyl pyrrolidone (PVP). The TiO2 thin film showed a strong oxygen-response under visible light at room temperature, when only PVP was the additive in the sol-gel solution. The oxygen-response of the TiO2 thin film was weak if both PVP and citric acid (CA) were added into sol-gel or without PVP. It was found that the TiO2 thin film was porous when only PVP was added into the sol-gel and the thin film was continuous and compact when both PVP and CA were added or without PVP. The effects of the porous structure and light were discussed, and the future directions were suggested for further improving the gas sensing properties of TiO2 thin films.
KeywordTiO2 半导体气敏材料 光催化 氧探头 溶胶-凝胶法
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
高世安,冼爱平,曹丽华,等. 聚乙烯吡咯烷酮改进TiO2薄膜的可见光增强氧敏特性[J]. 传感技术学报,2008,21.0(009):1481-1486.
APA 高世安,冼爱平,曹丽华,谢荣才,&尚建库.(2008).聚乙烯吡咯烷酮改进TiO2薄膜的可见光增强氧敏特性.传感技术学报,21.0(009),1481-1486.
MLA 高世安,et al."聚乙烯吡咯烷酮改进TiO2薄膜的可见光增强氧敏特性".传感技术学报 21.0.009(2008):1481-1486.
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