摘要
采用共沉淀法合成了Zn2Al黏土,采用直接合成法合成了具有Keggin结构的1∶11系列的K8[Cu(H2O)W11Ni O39],采用离子交换法合成了三元杂多阴离子柱撑水滑石LDH-[Cu(H2O)W11Ni O39]8-,并采用IR、氮气吸附、XRD、SEM-EDS等手段对合成的LDH-[Cu(H2O)W11Ni O39]8-进行了表征。结果表明:LDH-[Cu(H2O)W11Ni O39]8-取代了硝酸根离子,已经镶嵌到Zn2Al黏土中,并依然保留着原有的Keggin结构。将制得的LDH-[Cu(H2O)W11Ni O39]8-柱撑水滑石作为催化剂,考察了其对孔雀石绿溶液的光催化活性,以此确定了最佳反应条件。在孔雀石绿溶液用量100 m L,初始质量浓度20mg/L,p H值2,催化剂LDH-[Cu(H2O)W11Ni O39]8-的用量为0.1 g的最佳条件下,孔雀石绿的脱色率最高可达98.2%。
Zn2AI clay is synthesized by the co-precipitation method, Ks [ Cu （H2 O）W11 NIO39 ] of 1 ： 11 series with Keggin structure is synthesized by direct synthesis method, and hydrotalc pillared with ternary heteropolyanion LDH-[ Cu （H20）W11NIO39 ] 8- is synthesized by ion exchange method, which is characterized by IR, Nitrogen adsorption, XRD, SEM and EDS methods. The results show that the LDH-[ Cu （H2O）W11 NIO39 ] 8- replaces the nitrate ion and it is inlaid in Zn2A1 clay, furthermore, it still retains its original Keggin structure. The prepared LDH-[ Cu（ H2O） W11NiO39 ] 8- is used as catalyst, its photocatalytic activity to the malachite green solution is investigated, and the optimum reaction conditions are obtained as follows ： the dosage of malachite green solution in the initial concentration of 20 ml/L is 100 mL, pH value is 2, dosage of LDH-[ Cu （H2 O）W11 Ni039 ] 8- catalyst is 0.1 g. Under the optimum conditions, the decoloring rate of malachite green solution can be up to 98.2%.
出处
《能源化工》
2016年第4期37-42,共6页
Energy Chemical Industry
基金
黑龙江省教育厅学基金项目(12531776)资助
关键词
三元杂多阴离子柱撑水滑石
光催化
孔雀石绿
脱色
ternary heteropolyanion hydrotalc pillared
photocatalytic
malachite green
decolorization
