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

  • Materials (Organic, Inorganic, Electronic, Thin Films)
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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.

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Authors and Affiliations

  1. Research Laboratory of Petroleum Technology, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

    Taher Rahimi Aghdam, Dariush Salari & Azam Amini

  2. Department of Applied Chemistry, Faculty of Chemistry, University of Urmia, Urmia, Iran

    Habib Mehrizadeh

  3. School of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan, ROC

    Hui-Hsin Tseng

  4. Research Laboratory of Reactor and Catalyst, Faculty of Chemical Engineering, University of Tabriz, Tabriz, Iran

    Aligholi Niaei

Authors
  1. Taher Rahimi Aghdam
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  2. Habib Mehrizadeh
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  3. Dariush Salari
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  4. Hui-Hsin Tseng
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  5. Aligholi Niaei
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  6. Azam Amini
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Correspondence to Dariush Salari.

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Aghdam, T.R., Mehrizadeh, H., Salari, D. et al. Photocatalytic removal of NOx over immobilized BiFeO3 nanoparticles and effect of operational parameters. Korean J. Chem. Eng. 35, 994–999 (2018). https://doi.org/10.1007/s11814-017-0331-7

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  • DOI: https://doi.org/10.1007/s11814-017-0331-7

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