La掺杂ZnO/SBA-15催化剂的制备及光催化降解孔雀石绿  

Preparation of La-doped ZnO/SBA-15 and Its Photocatalytic Degradation to Malachite Green

作　　者：田志茗[1] 王鑫月 Tian Zhiming;Wang Xinyue(College of Chemistry and Chemical Engineering, Qiqihar University , Qiqihar 161006)

机构地区：[1]齐齐哈尔大学化学与化工学院,齐齐哈尔161006

出　　处：《化学通报》2019年第4期334-339,共6页Chemistry

基　　金：黑龙江省教育厅基本科研业务专项(135209219);齐齐哈尔市科学技术局项目(GYGG-201308)资助

摘　　要：采用溶胶凝胶法制备La-ZnO/SBA-15催化剂,并通过XRD、TG-DSC、XPS、TEM、SEM、N_2吸附脱附等表征分析La-ZnO/SBA-15的组成和性质,考察其对孔雀石绿溶液的催化活性。结果表明,掺杂后的SBA-15仍保持有序的二维六方结构,当n(Zn)∶n(Si)=1时,可见光照射2h,孔雀石绿降解率达99. 8%。动力学研究表明,催化剂对孔雀石绿溶液的降解符合一级反应动力学。La-ZnO/SBA-15 catalyst was prepared by sol-gel method. The composition and properties of La-ZnO/SBA-15 were characterized by XRD,TG-DSC,XPS,SEM and N2 adsorption and desorption. Its catalytic activity on malachite green( MG) solution was investigated. The results showed that the doped SBA-15 still maintains an ordered two-dimensional hexagonal structure. When n( Zn) ∶ n( Si) = 1,visible light irradiation for 2 h,the degradation rate of MG was 99. 8%. Kinetic studies showed that the degradation of MG solution by the catalyst is consistent with the first-order reaction kinetics.

关 键 词：SBA-15 氧化锌 LA掺杂 光催化降解 孔雀石绿 

分 类 号：O643.36[理学—物理化学]