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Effect of high energy ball milling on the physicochemical properties of TiO2–CeO2 mixed oxide and its photocatalytic behavior in the oxidation reaction

  • Srđan PetrovićEmail author
  • Ljiljana Rožić
  • Boško Grbić
  • Nenad Radić
  • Plamen Stefanov
  • Stevan Stojadinović
  • Vesna Jović
  • Jelena Lamovec
Article
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Abstract

TiO2–CeO2 photocatalysts were synthesized by a high energy ball milling process at different milling speed and their photocatalytic activities were evaluated by measuring degradation efficiency of methyl orange. Phases, crystal size, microstrain, and morphology were evaluated. The results have demonstrated that the milling reduces the average crystallite size for any milling speed. Increasing speed leads to the sticking of small particles to form strong and porous agglomerates with a lower specific surface area. XRD analysis shows that the enhanced milling speed affects pronounced anatase-to-rutile phase transformation. All of these changes influence the photocatalytic activity that is decreased by milling speed increase. Role of CeO2 in the TiO2–CeO2 photocatalytic system is to prolong life of electron/hole pair formed by the interaction of light with TiO2.

Keywords

Ball milling Photocatalysis Titanium dioxide Cerium oxide 

Notes

Acknowledgements

This work was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Projects Numbers 172 015, 172 001, 172 022, 172 035, 172 026, and TR 32 008).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.IChTM-Department of Catalysis and Chemical EngineeringUniversity of BelgradeBelgradeRepublic of Serbia
  2. 2.IChTM – Centre of Excellence in Environmental Chemistry and EngineeringUniversity of BelgradeBelgradeRepublic of Serbia
  3. 3.Institute of General and Inorganic ChemistryBulgarian Academy of SciencesSofiaBulgaria
  4. 4.Faculty of PhysicsUniversity of BelgradeBelgradeSerbia
  5. 5.IChTM-Centre of Microelectronic TechnologiesUniversity of BelgradeBelgradeRepublic of Serbia

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