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    Selective degradation of model pollutants in the presence of core@shell TiO2@SiO2 photocatalyst

    發(fā)布時間:2017-03-28  點擊次數(shù):1890  新聞來源:
     

    作者 Peter Nadraha,  Miran Gaberš?ekb, Andrijana Sever Škapina

    a Slovenian National Building and Civil Engineering Institute, Dimi?eva ul. 12, SI-1000 Ljubljana, Slovenia

    b National Institute of Chemistry, Hajdrihova ul. 19, SI-1000 Ljubljana, Slovenia

     

    摘要:Photocatalytic TiO2 degrades organic matter unselectively. However, in certain applications, such as degradation of pollutants, selectivity towards pollutants is beneficial. We synthesized core@shell TiO2@SiO2 nanoparticles with photocatalytic activity featuring a significantly faster preferential degradation of model pollutant (rhodamine B) in presence of abundant concentration of natural organic matter compared to pure TiO2 (P25). The material’s photocatalytic activity was tested in aqueous medium. The selectivity of prepared effect of core@shell materials is explained based on transmission electron microscopy, nitrogen adsorption, X-ray powder diffraction and zeta potential measurements.

     
     
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