研究论文
席北斗,刘鸿亮.钛酸四丁酯水解制备TiO2半导体光催化剂研究[J].环境科学学报,2001,21(2):144-147
钛酸四丁酯水解制备TiO2半导体光催化剂研究
- Study on photocatalyst TiO2 prepared by tetrabutyl titanate hydrolysis
- 摘要：研究了钛酸四丁酯水解制备TiO2粉末的两大影响因素R值(R是水和钛酸四丁酯的摩尔比)和烧结温度.通过光催化氧化五氯苯酚钠实验,结合对催化剂晶型结构、比表面积的表征分析,综合评价所制备的催化剂.实验结果表明,当R=100、烧结温度为650℃、烧结时间为1h,钛酸四丁酯水解所制备的TiO2半导体光催化剂催化活性和使用寿命均比较理想.从晶型结构分析,当催化剂中锐钛矿和金红石按一定比例共存时,其催化活性较单一金红石或锐钛矿高.实验认为锐钛矿与金红石的最佳比约为2:1.
- Abstract：TiO2 photocatalyst was prepared by tetrabutyl tiannate hydrolysis under various conditions, and characterised by X-ray and BET.The impact of calcinateing temperatures and R (moval ratio of water and tetrabutyl tianate) were examined.Sodium pentachlorphenolate (PCP-Na) solution was used to examine the photocatalytic reaction of TiO2.The results indicated that the optimal condition of preparation catalyst is R:100 and calcinateing temperature:650℃, and the photocatalytic activity is related with crastal structures, when anatase:rutile is 2:1, the photocalytic activity is the highest.
- Key words：Tetrabutyl titanate hydrolysis R Calcinateing temperature anatase Rutile photocatalytic oxidation Sodium pentachlorophenolate (PCP-Na)
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