Bismuth Modified Porous Silica Preparation,Characterization and Photocatalytic Activity Evaluation for Degradation of Isoproturon

查看全文 作　　者：Anil Kumar Reddy [1]Police;Srinivas [1]Basavaraju;Durga Kumari [1]Valluri;Subrahmanyam [1]Machiraju

机构地区：[1]Inorganic and Physical Chemistry Division,Indian Institute of Chemical Technology,Hyderabad 500607,India

出　　处：《Journal of Materials Science & Technology》索引2013年第29卷第7期,共8页

基　　金：PAKR and MS thank CSIR,New Delhi for funding this work under Emeritus Scientist Scheme 摘　　要：Porous silica prepared by using an acrylic emulsion has been impregnated with bismuth ion resulting in Bi_2SiO_5 species containing surface.The as-prepared materials have been characterized by X-ray diffraction spectroscopy (XRD),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(UV-Vis DRS), scanning electron microscopy(SEM),energy dispersive analysis of X-ray(EDAX),transmission electron microscopy(TEM),Fourier transform infrared spectroscopy(FTIR) and N_2 adsorption/desorption techniques. EDAX analysis confirms the penetration of bismuth ions into the framework of silica to form Bi_2SiO_5,which is substantiated by XRD.The UV—Vis DRS shows that the catalysts are optically active and XPS confirms the inclusion of bismuth into the framework of silica.FTIR spectra illustrate the formation of Bi—O—Si linkages in the porous silica framework.SEM and TEM show the spherical morphology,whereas N_2 adsorption/desorption study confirms the porosity of the prepared materials.The photocatalytic activity of the material is evaluated for the degradation of isoproturon herbicide and it is found that the material is active as compared to the commercial P-25 Degussa TiO_2. 关键词：光催化活性活性评价铋离子制备傅里叶变换红外光谱降解多孔二氧化硅透射电子显微镜

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Bismuth Modified Porous Silica Preparation,Characterization and Photocatalytic Activity Evaluation for Degradation of Isoproturon

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