复合型光催化剂H_3PW_(12)O_(40)/TiO_2/漂珠的制备及其对茜素红的光催化作用  

Study on preparation of compound photocatalyst H_3PW_(12)O_(40)/TiO_2/ float pearls and its photocatalytic performance

作　　者：李松田[1] 马威[1] 宋晶晶[1] 高梅 

机构地区：[1]平顶山学院应用化学重点实验室,河南平顶山467000 [2]嘉兴市环境保护局,浙江嘉兴314001

出　　处：《工业用水与废水》2013年第6期46-48,61,共4页Industrial Water & Wastewater

基　　金：河南省科技计划重点项目(102102310298);河南省教育厅科学技术研究重点项目指导计划(12B60008)

摘　　要：以漂珠为载体,采用溶胶-凝胶法制备TiO2/漂珠,用浸渍法制得磷钨酸修饰的复合光催化剂H3PW12O40/TiO2/漂珠.紫外-可见漫反射光谱显示该产品的光响应强度提高.光催化降解茜素红试验结果表明,在pH值为4～5,茜素红的初始质量浓度为7.5 mg/L,光催化剂投加量为0.08 g/100 mL[水],250W紫外光照射的条件下,90 min内底物的脱色率达到50％以上.TiO2/float pearls was prepared by solgel method with float pearls as the carrier. Phospho tungstie acid modifiedcompound photocatalyst H3PW12Ono/TiOJfloat pearls was prepared by dipping method. UVVis DRS showed that, the photoresponse of the product was enhanced. The results of alizarin red photo catalytic decolorization experiment showed that, when the pH value was 4 - 5, the initial mass concentration of alizarin red was 7.5 mg/L, the photocatalyst dosage was 0.08 g/100 mL[water], under the irradiation of 250 W UV light, the decoloration rate of the substrate reached above 50% in 90 min.

关 键 词：漂珠 TIO2 磷钨酸 光催化 茜素红 

分 类 号：X791.035[环境科学与工程—环境工程]