纳米管钛酸CO处理产物的结构及光催化活性  

Study of the Structure and Photocatalytic Activity of the TiO_2 Prepared from the Treatment of NTA in CO

作　　者：王景菊[1] 王晓冬[1] 吴志申[1] 金振声[1] 

机构地区：[1]河南大学特种功能材料重点实验室,河南开封475004

出　　处：《影像科学与光化学》2009年第2期141-148,共8页Imaging Science and Photochemistry

摘　　要：研究了在CO气流中,处理温度对纳米管钛酸(NTA)脱水产物TiO2的结构及C3H6光催化氧化反应活性的影响.结果表明:NTA经CO高温处理后,样品未发生C掺杂,只有碳沉积发生;随着处理温度的升高,样品的比表面积大幅下降,与NTA在空气中焙烧处理相比,由锐钛矿向金红石TiO2转变的温度提前;CO处理后产物对C3H6均未表现出可见光催化性能,但具有紫外光催化活性,随着在CO气氛中处理温度的升高,紫外光催化活性降低.The structure and photocatalytic activity of the TiO2 prepared from the treatment of nanotubed titanic acid （NTA） in CO was investigated. The results showed that when NTA was treated in CO at high temperature,the carbon doping in product TiO2 did not appear,only carbon deposition on TiO2 appeared; the BET areas of the products decreased markedly with the increase of treating temperature; The transformation temperature from anatase to futile for TiO2 obtained by CO treatment was much lower than that obtained by air treatment. The TiO2 obtained by CO treatment of NTA were inert in photocatalytic activity under visible-light irradiation, but active under UV-light irradiation, while the UV light photocatalytic activity decreased with the increase of the treating temperature in CO atmosphere.

关 键 词：CO 纳米管钛酸 C3H6光催化 碳沉积 晶型转变 

分 类 号：O643.36[理学—物理化学]