铜取代磷钨杂多酸盐/PANI/SnO_2复合催化剂光催化降解亚甲基蓝  

Photocatalytic degradation properties of methylene blue over composite photocatalytic copper substituted tungstophosphoric acid/PANI/SnO_2

作　　者：马荣华[1] 李晓宇[1] MA Ronghua LI Xiaoyu(College of Chemistry and Engineering, Qiqihar University, Qiqihar 161006, China)

机构地区：[1]齐齐哈尔大学化学化工学院,黑龙江齐齐哈尔161006

出　　处：《印染助剂》2017年第7期41-45,共5页Textile Auxiliaries

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Keggin型铜取代磷钨杂多阴离子PW_(11)O_(39)Cu(Ⅱ)(H_2O)^(5-)PW_(11)Cu为掺杂剂,制备了三元复合催化剂PW_(11)Cu/PANI/SnO_2,并用IR、XRD、UV-Vis、XPS和SEM等手段对其进行了表征。以亚甲基蓝为染料模型污染物,考察了催化剂用量、染料溶液初始质量浓度、溶液pH等多种因素对光催化降解反应的影响。试验结果表明,在溶液pH=6、催化剂用量为5 mg、亚甲基蓝溶液初始质量浓度为5 mg/L的条件下,紫外灯光照150 min,PW_(11)Cu/PANI/SnO_2对亚甲基蓝的脱色率可达94.69%,显示了光催化降解的高效性。Taking Keggin-type Cu（ Ⅱ）-substituted heteropolyanion PW,,O39Cu（Ⅱ）（H2O）5-PW,,Cu as doping agent, the ternary composite catalyst PW,,Cu/PANI/SnO2 was successfully prepared. The photocatalysts were characterized by IR, XRD, UV-Vis, XPS and SEM techniques. Using methyl blue as stimulated pollution, the effect of the catalyst amount, the dye solution initial concentration and pH on the photocatalytic degradation was studied. The results showed that the pH was 6, the amount of catalyst was 5 mg, the dye solution initial concentration was 5 mg/L, illuminated by UV 150 min, the decolodzation rate was 94.69%. It showed that the efficiency of the photocatalyst on photocatalytic degradation of methylene blue was high.

关 键 词：复合催化剂 光催化 亚甲基蓝 

分 类 号：TQ426[化学工程]