磷钼钒杂多酸的合成及其对染料废水的光催化降解性能  

Synthesis and Photocatalytic Degradation Performance of Molybdovanadophosphoric Heteropoly Acid in Treatment of Dye Wastewater

作　　者：王轶博[1] 侯跃[2] 高丽华[1] 张鑫[2] 王怡娟[2] 杨骏青[1] 赵鸣[1] 卿淼晴 

机构地区：[1]北京工商大学理学院,北京100048 [2]北京工商大学食品学院,北京100048

出　　处：《过程工程学报》2015年第4期703-707,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金青年基金资助项目(编号:21106001);国家自然科学基金资助项目(编号:21371018)

摘　　要：采用分步酸化加热回流方法合成了磷钼钒杂多酸H7[P2Mo17VO62]?39H2O,用红外光谱表征了其结构,考察了其对罗丹明B光降解的催化作用.结果表明,没有杂多酸H7[P2Mo17VO62]·39H2O催化时,单独进行紫外光照射罗丹明B降解率仅17.5%;H7[P2Mo17VO62]?39H2O催化剂浓度增加,罗丹明B的降解率升高,最高达75%.同时探讨了Dawson型杂多酸H7[P2Mo17VO62]?39H2O对有机污染物的光催化降解机理.Molybdovanadophosphoric heterpoly acid H7[P2Mo17VO62]·39H2O was prepared from NH4VO3, NaH2PO4 and Na2MoO4 step by step, and characterized by IR spectrometry. Based on a model pollutant, Rhodamine B （RhB）, the photocatalytic ability of H7[PEMo17VO62]·39H2O was studied under UV-Vis light. The results showed that when HT[P2Mo17VO62]·39H2O was not added in the solution of RhB, the degradation rate of RhB was only 17.5% under UV-Vis light irradiation. Under UV-Vis light irradiation, the degradation rate had greatly improved while the concentration of prepared heteropoly acid was low in the solution of RhB, and the degradation rate increased with increasing of concentration of the heteropoly acid. And the degradation rate of RhB reached up to 75%. The photocatalytic degradation mechanism of RhB with Dawson type H7[P2Mo17VO62]·39H2O was also analyzed.

关 键 词：杂多酸 光催化 染料 降解 

分 类 号：O621.2[理学—有机化学]