Al-TiO_(2)负载型光催化剂的制备、表征及对邻苯二甲酸酯的光催化活性  

Preparation and Characterization of Al-doped TiO_(2) and Its Photocatalytic Activity Photocatalyst for Phthalate Esters

作　　者：魏麟欢[1] 郭维静[1] 王小静[1] WEI Lin-huan;GUO Wei-jing;WANG Xiao-jing(Dalian Center for Disease Control and Prevention,Dalian Liaoning 116021,China)

机构地区：[1]大连市疾病预防控制中心,辽宁大连116021

出　　处：《当代化工》2022年第11期2579-2582,2587,共5页Contemporary Chemical Industry

基　　金：辽宁省自然科学基金指导计划,光催化降解生活饮用水中邻苯二甲酸酯类的研究(项目编号:20180550790)。

摘　　要：以钛酸四丁酯为钛源、十八水硫酸铝为铝源,利用溶胶-凝胶技术合成了Al掺杂的TiO_(2)天然矿石球材料,并利用XRD、SEM、UV-Vis手段对催化剂的结构、形貌、空隙大小和光催化性能进行表征。结果表明:适量Al的掺杂使TiO_(2)吸收边缘发生红移,提高了可见光光催化活性。对初始质量浓度为100 ug·L^(-1)的6种邻苯二甲酸酯进行催化降解6 h后,其降解率达到90%左右。Using tetrabutyl orthotitanate (TBOT) as Ti source and KAl(SO4)2·12H2O as Al source,Al-doped TiO_(2)natural ore ball material was synthesized via sol-gel method.The structure,morphology,pore size and photocatalytic activity of the as-prepared samples were characterized by X-ray diffractometry,scanning electron microscope and UV-Vis-DRS.The experimental results showed that the appropriate amount of Al doping made the absorption edge shift towards the longer wavelength side,which promoted visible light photocatalytic activity of TiO_(2).The degradation ratio was about 90% during the photodegradation of six phthalate esters with the initial mass concentration of 100μg·L^(-1)for 6 h.

关 键 词：铝掺杂 二氧化钛 光催化 邻苯二甲酸酯 

分 类 号：R123.3[医药卫生—环境卫生学]