K_8[Zn(H_2O)W_(11)CoO_(39)]/PANI掺杂材料的制备、表征及光催化活性  

Preparation, characterization and photocatalytic activity of K_8[Zn(H_2O)W_(11)CoO_(39)]/PANI doped materials

作　　者：单秋杰[1] 刘璐[1] 陈伟[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《印染助剂》2016年第1期31-35,共5页Textile Auxiliaries

基　　金：黑龙江省教育厅基金项目(12531776)

摘　　要：采用直接法合成了Keggin结构的三元杂多酸盐K_8[Zn(H_2O)W_(11)CoO_(39)],利用化学氧化法合成了聚苯胺掺杂的多金属杂多酸盐掺杂材料K_8[Zn(H_2O)W_(11)CoO_(39)]/PANI,并用UV-Vis、IR、XRD、SEM-EDS等对其组成和结构进行了表征。以所合成的掺杂材料为催化剂,在紫外灯下照射100 min,研究了孔雀石绿溶液的光催化降解反应。结果表明,当孔雀石绿的初始质量浓度为5mg/L、催化剂用量为0.08 g、溶液pH=2时,催化脱色效果最佳。此时,当催化剂为K_8[Zn(H_2O)W_(11)CoO_(39)]/PANI时,孔雀石绿溶液的脱色率可达85.30%;当催化剂为K_8[Zn(H_2O)W_(11)CoO_(39)]时,孔雀石绿溶液的脱色率为48.73%;当没有催化剂时,孔雀石绿溶液的脱色率为22.97%。杂多酸盐掺杂聚苯胺的掺杂材料具有非常好的光催化活性。Heteropoly acid salt K_8[Zn（H_2O）W_（11）CoO_（39）] with Keggin structure was synthesized by the direct method. Heteropoly acid doped polyaniline material K_8[Zn（H_2O）W_（11）CoO_（39）]/PANI was synthesized by chemical oxidation method. Its composition and structure was characterized by UV-Vis, IR, XRD and SEM-EDS. In addition, under 100 min of UV light irradiation, photocatalytic degradation reaction of malachite green solution was studied using the synthesized materials as catalyst. The experimental results showed that as the initial concentration of the malachite green solution 5 mg/L, catalyst dosage 0.08 g, the solution pH=2, the catalytic decolorizing efficiency was the highest. When taking K_8[Zn（H_2O）W_（11）CoO_（39）]/PANI as the catalyst, malachite green solution decolorizing efficiency was 85.30%; when the catalyst was K_8[Zn（H_2O）W_（11）CoO_（39）], the decolorizing efficiency was 48.73%; the degradation decolorizing efficiency of malachite green solution without catalyst was22.97%. Polyaniline doped with heteropoly acid salt had very good photocatalytic activity.

关 键 词：三元杂多酸盐 聚苯胺 掺杂材料 光催化活性 孔雀石绿 

分 类 号：TQ426.8[化学工程] O611.4[理学—无机化学]