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      https://www.ias.ac.in/article/fulltext/boms/044/0123

    • Keywords

       

      Brookite TiO$_2$; BiOBr; photocatalysis; rhodamine B; degradation.

    • Abstract

       

      Brookite TiO$_2$ was synthesized and BiOBr was supported on the surface of brookite TiO$_2$ by a hydrothermal method. X-ray diffraction and X-ray photoelectron spectroscopy analyses of the composites confirmed the formation of brookite TiO$_2$/BiOBr. Transmission electron microscopy results confirmed the as-prepared composites were nano-sized.The optimum loading amount of BiOBr was 30%. The photocatalytic results show that the degradation efficiency of rhodamine B by titanite TiO$_2$/BiOBr (30%) under visible-light irradiation for 2 h is close to 100%. ${\bullet}$O$_2$$^–$ and h$^+$ are themain active species during the photocatalytic process. The improvement of photocatalytic activity might be because theformation of p–n hetero-junction enhanced the separation efficiency of photogenerated electron–hole pairs. The photocurrentdensity of the brookite/BiOBr (30%) was about 2 times higher than that of pure brookite.

    • Author Affiliations

       

      ZHITENG WANG1 NING LIU1 HUIDONG XIE1 JIE LI1 YAJUAN ZHAO1 NA WANG2

      1. School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
      2. College of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
    • Dates

       
  • Bulletin of Materials Science | News

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