SO_4^(2-)/CeO_2-TiO_2/HTLC的制备及光催化性能  

Preparation and Photocatalytic Performance of SO_4^(2-)/ CeO_2- TiO_2/ HTLC

作　　者：薛茹君[1] 程淑芬[1] 王庆超[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2014年第3期29-32,共4页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省教育厅自然科学研究基金资助项目(ZD200903);淮南市科技专项基金资助项目

摘　　要：为利用TiO2作为光催化降解水中有机污染物,以铁铝水滑石为载体,以CeO2掺杂的TiO2为活性组分,制得光催化剂前体,再以SO2-4对其进行修饰,制得了SO2-4/CeO2-TiO2/HTLC光催化剂。采用XRD、SEM、EDS和UV-Vis DRS等手段对催化剂进行了表征;以甲基橙为模拟污染物,考察了催化剂样品的光催化性能。实验结果表明:CeO2掺杂TiO2粒子在可见光区吸光性能高于TiO2;SO2-4与CeO2-TiO2/HTLC有协同催化作用,SO2-4/CeO2-TiO2/HTLC光催化剂对可见光的吸收大大增强。经模拟日光照射2h,SO2-4改性的15%(CeO2-TiO2)/HTLC催化剂对甲基橙的脱色率达到93%。In order to degrade organic pollutants in water, SO2-4 /CeO2 -TiO2/HTLC photocatalyst was prepared, taking Fe-Al hydrotalcite as support, Cerium-doped TiO2 as the active component to prepare the photocatalyst precursor CeO2 -TiO2/LDOs, which is modified by soak method in H2 SO4 solution.The catalyst was character-ized by means of XRD, SEM, EDS and UV-Vis DRS.With methyl orange as model pollutant, the photocata-lytic performance of the catalysts was determined.Experimental results showed that the absorption of CeO2 -TiO2 particle for the visible light is stronger than TiO2; there is a synergistic effect between SO2-4 and CeO2 -TiO2/HTLC;and the absorption of SO2-4 /CeO2 -TiO2/HTLC photocatalyst for visible light is enhanced.The decolori-zation rate of modified SO2-4 /15%（ CeO2 -TiO2 ）/HTLC photocatalyst for methyl orange reaches 93%after irra-diation under simulated sunlight for 2 hours.

关 键 词：SO^2-4/CeO2-TiO2/HTLC 光催化剂 制备 性能 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]