三维有序大孔Ag/ZrO_2-TiO_2:制备及紫外光催化降解染料和水杨酸性能  

Three-Dimensionally Ordered Macroporous Ag/ZrO_2-TiO_2:Preparation and UV Photocatalytic Activity for Dyes and Salicylic Acid Degradation

作　　者：李莉[1,2] 赵月红[2] 路露[2] 马慧媛[1] 刘波[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程博士后流动站,哈尔滨150080 [2]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《无机化学学报》2012年第6期1131-1138,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21071038);黑龙江省自然科学基金(No.B201106);黑龙江省教育厅科学技术项目(No.12511592);黑龙江省政府博士后资助经费(No.LBH-Z11108);哈尔滨市科技创新人才研究专项资金(No.2010RFLXG004);齐齐哈尔大学研究生创新科研课题(YJSCX2010-017X)资助项目

摘　　要：采用聚苯乙烯(PS)微球作为模板剂,经溶胶-凝胶及煅烧后处理的方法制备了三维有序大孔(3DOM)复合材料Ag/ZrO2-TiO2。通过FTIR、XRD、XPS、N2吸附-脱附和SEM-EDS等对其进行了表征。结果显示,经PS微球作用后的复合材料Ag/ZrO2-TiO2具有锐钛矿晶型结构,其Ag以单质形式存在。该复合材料的孔结构高度有序,属三维有序大孔,平均孔直径为120 nm,孔壁由紧密堆积的Ag/ZrO2-TiO2纳米晶粒组成,孔收缩率约为40%。该复合材料表现出较好的紫外光催化降解水杨酸和甲基橙等染料性能,其活性明显高于商用光催化剂(Degussa P-25)、Ag/ZrO2-TiO2和3DOM ZrO2-TiO2,在90 min内对甲基橙的降解率达80.1%。Three-dimensionally ordered macroporous （3DOM） composite Ag/ZrO2-TiO2 was prepared by the sol-gel method using a polystyrene （PS） latex sphere as the template. The title material was characterized by FTIR, XRD, XPS, TEM, N2 adsorption-desorption and SEM-EDS. The results show that the title composite Ag/ZrO2-TiO2 is in anatase crystalline structure, and the silver species in the Ag/ZrO2-TiO2 is metallic Ag^0. The composite material is in 3DOM structure with an average pore diameter of 120 nm. The pore wall is closely stacked by the Ag/ZrO2-TiO2 nanocrystals, and the macroporous shrinkage rate is ca.40%. The Results for photocatalytic degradation of dye and salicylic acid under UV light irradiaton show that the activity of 3DOM Ag/ZrO2-TiO2is better than that of Degussa P- 25, Ag/ZrO2-TiO2and 3DOM ZrO2-TiO2, and the degradation rate of methyl orange is 80.1% within 90 min.

关 键 词：Ag/ZrO2-TiO2 三维有序大孔材料 制备 光催化 降解 

分 类 号：O643.361[理学—物理化学]