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Korean Journal of Chemical Engineering

, Volume 35, Issue 4, pp 994–999 | Cite as

Photocatalytic removal of NOx over immobilized BiFeO3 nanoparticles and effect of operational parameters

  • Taher Rahimi Aghdam
  • Habib Mehrizadeh
  • Dariush Salari
  • Hui-Hsin Tseng
  • Aligholi Niaei
  • Azam Amini
Materials (Organic, Inorganic, Electronic, Thin Films)

Abstract

Perovskite type BiFeO3 (BFO) was synthesized by sol-gel auto-combustion method. Synthesized BFO was immobilized on the micro slides glass plates by sol-gel dip-coating method. The sample was characterized by XRD, FESEM, UV-Vis DRS, and BET techniques. The XRD pattern confirmed the perovskite structure, and from the Debye-Scherrer equation the average crystalline size was calculated as 19 nm. The FE-SEM images of prepared BFO showed porous structure with low agglomeration. The band gap energy was calculated about 2.13 eV, and the specific surface area (SSA) of prepared BFO nanostructure was obtained 55.1m2 g−1. The photocatalytic activity of prepared pure and immobilized BFO was investigated in the removal of NOx under UV irradiation, in the batch photoreactor. The effects of operational parameters such as initial concentration of NOx, light intensity and amount of coated photocatalyst, under identical conditions, were investigated. The results showed that the highest conversion of NOx was obtained as 35.83% in the 5 ppm of NOx with 1.2 g immobilized BFO and under 15 W illumination lamp.

Keywords

Air Pollution Photocatalysis Perovskite Nanostructure Bismuth Ferrite 

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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2018

Authors and Affiliations

  • Taher Rahimi Aghdam
    • 1
  • Habib Mehrizadeh
    • 2
  • Dariush Salari
    • 1
  • Hui-Hsin Tseng
    • 3
  • Aligholi Niaei
    • 4
  • Azam Amini
    • 1
  1. 1.Research Laboratory of Petroleum Technology, Faculty of ChemistryUniversity of TabrizTabrizIran
  2. 2.Department of Applied Chemistry, Faculty of ChemistryUniversity of UrmiaUrmiaIran
  3. 3.School of Occupational Safety and HealthChung Shan Medical UniversityTaichungTaiwan, ROC
  4. 4.Research Laboratory of Reactor and Catalyst, Faculty of Chemical EngineeringUniversity of TabrizTabrizIran

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