离子交换法制备介孔TiO_2/CdS纳米复合光催化剂及性能研究  

Preparation of Mesoporous TiO_2 /CdS Nanocomposite Photocatalyst Using Ion Exchange Method and Photocatalytic Performance under Visible Irradiation

作　　者：郝星宇[1] 赵丹[2] 庞先勇[1] 房江华[2] 高浩其[2] 

机构地区：[1]太原理工大学化学化工学院,山西太原030024 [2]宁波工程学院化学工程学院,浙江宁波315016

出　　处：《宁波大学学报（理工版）》2013年第4期49-55,共7页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：浙江省自然科学基金(Y4110538);宁波市有机高分子材料与工程创新团队项目(2011B82002)

摘　　要：使用离子交换法制备了介孔TiO2/CdS纳米复合光催化材料.利用X射线衍射、高分辨率透射电镜、氮气吸附-脱附分析、红外光谱和紫外-可见漫反射光谱等手段对制备的介孔TiO2/CdS纳米复合光催化材料的微观结构和光吸收性质进行了研究,并选择染料罗丹明B和茜素红作为底物在可见光下考察了催化材料的光催化活性.结果表明:离子交换法制备介孔TiO2/CdS的光催化活性显著高于沉淀法制备的TiO2/CdS.In this report,Mesoporous TiO2 /CdS nanocomposite photocatalyst is prepared using ion exchange method.The microstructure and the light absorption characteristics of the prepared mesoporous TiO2 /CdS are investigated using XRD,HRTEM,nitrogen isotherm,FTIR and UV-vis diffuse reflectance spectra.The photocatalytic activities of mesoporous TiO2 /CdS are tested for photocatalytic degradation of dye Rhodamine B and Alizarin red under visible irradiation.It is found that the mesoporous TiO2 /CdS prepared with our ion exchange method shows much higher photocatalytic activity than that prepared with the codeposition method.

关 键 词：介孔二氧化钛 硫化镉 离子交换 光催化降解 

分 类 号：TQ426.6[化学工程]