Dawson结构磷钨酸的电化学及光催化性能研究  

The Study on Electrochemical Performance and Photocatalytic Activity of Phosphotungstic Acid with Dawson Structure

作　　者：翁璐云[1] 柳闽生[1] 曹小华[2] 钱祝进[1] 朱志杨[1] 

机构地区：[1]南京晓庄学院生物化工与环境工程学院,江苏南京211171 [2]九江学院化学与环境工程学院,江西九江332005

出　　处：《江西师范大学学报（自然科学版）》2012年第2期185-188,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(21161009);江苏省教育厅大学生实践创新训练计划(苏教高[2011]25号);南京晓庄学院重点科研课题(2005-NXY56)资助项目

摘　　要：制备了Dawson结构磷钨酸(H6P2W18O62.13H2O),通过UV-Vis及电化学方法分别对其结构和电化学性能进行了表征.以甲基橙溶液(MO)为模拟工业染料废水,研究Dawson结构磷钨酸在紫外光照射下催化剂的光催化性能.研究结果表明,在pH值<2时,催化剂表现出较强的氧化还原能力;在优化条件下,即催化剂用量为1.5 g/L、甲基橙初始浓度为10 mg/L、紫外光照时间为120 min时,甲基橙降解率为93.83%.Dawson structure phosphotungstic acid was prepared and characted by means of UV-Vis and electrochemical methods.The degradation of methyl orange under the irradiation of ultraviolet light was carried out as a probe reaction to study the photo catalytic ability of the catalyst.The results showed that the catalyst exhibited an excellent oxidation-reduction ability when pH2.Under the optimal condition,i.e.catalyst dosage 1.5 g/L,the initial concentration of methyl orange 10 mg/L,illumination time 120 min and pH2,the degradation rate of methyl orange was more than 93.83%.

关 键 词：H6P2W18O62.13H2O 电化学 甲基橙 光催化降解 

分 类 号：O614.61[理学—无机化学] TQ032.4[理学—化学]