α-SiW_(11)Cu/PANI/ZnO复合催化剂的制备及光催化降解孔雀石绿研究  

Preparation of α-SiW_(11)Cu/PANI/ZnO composite catalyst and the photocatalytic degradation of malachite green

作　　者：马荣华[1] 张婧睿 刘春涛[2] Ma Ronghua;Zhang Jingrui;Liu Chuntao(College of Chemistry and Chemical Engineering,Qiqihaer University,Qiqihaer 161006;Qiqihar Environmental Monitoring Center,Qiqihar 161005)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006 [2]齐齐哈尔市环境监测中心站,齐齐哈尔161005

出　　处：《化工新型材料》2019年第2期197-201,共5页New Chemical Materials

基　　金：黑龙江省自然科学基金资助(B2007-15);黑龙江省教育厅基金资助(12531760)

摘　　要：以铜取代杂多酸盐α-SiW_(11)Cu为活性组分,制备了α-SiW_(11)Cu/聚苯胺(PANI)/ZnO三元复合催化剂,采用傅里叶变换红外光谱仪、紫外-可见分光光度计、X射线衍射仪、X射线光电子能谱仪和扫描电子显微镜表征了其结构,并以模拟污染物孔雀石绿的光催化降解评价了α-SiW_(11)Cu/PANI/ZnO的光催化性能。结果表明:在30W紫外灯照射下,当孔雀石绿溶液pH=3,孔雀石绿初始质量浓度为10mg/L,复合催化剂投加量为20mg/L,照射时间为200min时,脱色率可达83.78%。光催化降解孔雀石绿过程符合一级动力学方程,一级方程表观反应速率常数为0.00917min^(-1)。The ternary composite catalystα-SiW11Cu/PANI/ZnO was prepared and characterized by FT-IR,UV-Vis,XRD and SEM.The photocatalytic degradation of malachite green was selected as probe to evaluate the enhanced photocatalytic activity of as-synthesizedα-SiW11 Cu/PANI/ZnO.Experimental results showed that the decoloration efficiency of malachite green was achieved 83.78%when 10mg/L of malachite green containing simulated solution at pH 3was treated by 30Wultraviolet light with 20mg/L ofα-SiW11Cu/PANI/ZnO as catalyst.The kinetics of photodegradation of malachite green was satisfied by the pseudo-first-order equation,with a constant at 0.00917min^-1.

关 键 词：杂多酸 催化剂 聚苯胺 光催化降解 孔雀石绿 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]