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以钛酸四正丁酯作为钛源和功能单体,对羟基苯甲酸乙酯作为模板分子制备出了印迹型二氧化钛光催化剂。X射线衍射结果表明,该催化剂为锐钛矿相和金红石相混晶。光催化降解实验表明,在功能单体与模板分子摩尔比为5∶1,煅烧温度和时间分别为550℃和2h时,该光催化剂具有最佳的催化活性;经过12h光催化降解反应,其对目标分子对羟基苯甲酸乙酯的降解率可达90%,是非印迹型光催化剂的2.1倍。
Imprinted titanium dioxide photocatalyst was prepared by using tetra-n-butyl titanate as titanium source and functional monomer and ethyl p-hydroxybenzoate as a template. X-ray diffraction results show that the catalyst is anatase phase and rutile phase mixed crystal. Photocatalytic degradation experiments show that the photocatalyst has the best catalytic activity when the molar ratio of functional monomer to template is 5:1, calcination temperature and time are 550 ℃ and 2h, respectively. After 12h photocatalytic degradation reaction, The degradation rate of the target molecule of ethylparaben up to 90%, non-imprinted photocatalyst 2.1 times.