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	Influence of pretreatment of titanium substrate on long-term stability of TiO2 film
	Zhang Li ; Zhang Pengyi ; Chen Songzhe
	2010-05-10 ; 2010-05-10
关键词	titania film substrate pretreatment benzamide reactive brilliant red X-3B photocatalytic degradation photoelectrochemistry stability deactivation PHASE PHOTOCATALYTIC OXIDATION CATALYST DEACTIVATION DEGRADATION TOLUENE GLASS DECOMPOSITION SUPPORTS SULFIDE ACID Chemistry, Applied Chemistry, Physical Engineering, Chemical
中文摘要	TiO2 films coated on titanium substrates pretreated using different methods were prepared and characterized by scanning electron microscopy, atomic force microscopy, X-ray diffraction, and electrochemical impedance spectroscopy. The results indicated that the TiO2 film coated on the substrate pretreated with oxalic acid (TiO2/Ti-OC) was tightly, whereas the film coated on the substrate pretreated with sodium carbonate solution (TiO2,/Ti-SC) was loose. The catalytic activity of the TiO2/Ti-OC film for the degradation of benzamide remained up to 70 % even after dipping in deionized water for 280 d, whereas the TiO2/Ti-SC film lost its photoactivity after dipping in water for 60 d. The deactivation of the catalyst was attributed to the flaking of the coated TiO2, which was caused by the continuous growth of the passive film between the substrate and coated catalyst. Oxalic acid pretreatment could largely prevent the passive film from growing on the substrate and therefore greatly increased the stability of the catalyst during a long-term running. In a 35 day test of continuous declorization of aqueous reactive brilliant red X-3B solution, TiO2/Ti-SC exhibited very high photocatalytic activity and stability.
语种	中文 ; 中文
出版者	SCIENCE CHINA PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/23214]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Li,Zhang Pengyi,Chen Songzhe. Influence of pretreatment of titanium substrate on long-term stability of TiO2 film[J],2010, 2010.
APA	Zhang Li,Zhang Pengyi,&Chen Songzhe.(2010).Influence of pretreatment of titanium substrate on long-term stability of TiO2 film..
MLA	Zhang Li,et al."Influence of pretreatment of titanium substrate on long-term stability of TiO2 film".(2010).

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