Investigation of the band gap energy shift and photocatalytic properties of Bi3+-doped ceria

Maram Bakiro, Salwa Hussein Ahmed, Ahmed Alzamly

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

A series of Bi3+-doped CeO2 photocatalysts have been prepared using simple coprecipitation method. The effect of Bi3+ doping on structural surface morphology and optical properties of the prepared photocatalysts was characterized using diffuse reflectance spectroscopy (DRS), powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) for determination of the specific surface area and porosity. All prepared photocatalysts exhibit fluorite-type structure with no phase change up to 10 mol percent Bi3+ doping when calcinated at 973 K for 1 h. A red shift in optical band gap measurements was observed with increasing Bi3+ ion percent doping. Photocatalytic performance of prepared photocatalysts were examined using visible-light-induced photocatalytic reduction of 4-nitroaniline to p-phenylenediamine. The highest photocatalytic efficiency was achieved using CeO2 photocatalyst with 5 mol percent Bi3+ doping.

Original languageEnglish
Article number107906
JournalInorganic Chemistry Communication
Volume116
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Band gap
  • Coprecipitation
  • Doping
  • Photocatalyst
  • Red shift
  • Visible light

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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