Photocatalytic Degradation of Acid Orange Ⅱ on Solid Polyoxometalate Salt

摘要：

　　Solid polyoxometalate salt (K3PW12O40,denote as KPW) is prepared by simple precipitation of phosphotungstic acid and potassium ion,followed by calcination.Using the as-prepared KPW as photocatalyst,the azo dye-acid orange Ⅱ (Org Ⅱ) can be efficiently degraded under ultraviolet (UV) light irradiation.The reaction conditions (pH and dye concentration) were preliminary investigated.Besides,the influence of coexisting substances such as H2O2,Cl-,F-,Cr6+,Ag+ on the photocatalytic degradation kinetics were studied in depth.Org Ⅱ can be facilely bleached and mineralized when KPW is 1.0 g/L and pH is 2.5.Coexisting of Ag+ can promote the degradation process.Whereas,H2O2,Cr6+,Fe3+,F and Cl-have negative effects.

关键词： K3PW12O40 Photocatalysis UV Coexisting substances

作者: Huabo Zhan Gang Zou Zhoujie Xie Jiahao Jiang Qi Wang

作者单位: School of Environment Sciences and Engineering,Zhejiang Gongshang University,Hangzhou,China

会议类型: 国际会议

会议名称: Conference on Environmental Pollution and Public Health (2012年环境污染与大众健康学术会议(CEPPH2012))

会议地点: 上海

会议语种:英文

页码: 668-671

在线出版日期: 2012-08-09（万方平台首次上网日期，不代表论文的发表时间）