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Oxygen vacancy modification of commercial ZnO by hydrogen reduction for the removal of thiabendazole : characterization and kinetic study

Alireza Ranjbari, Kristof Demeestere (UGent) , Ki-Hyun Kim and Philippe Heynderickx (UGent)
(2023) APPLIED CATALYSIS B-ENVIRONMENTAL. 324.
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Abstract
The effect of temperature-programmed H2 reduction on modification of surface oxygen vacancies in commercial ZnO (C-ZnO) is investigated. The photocatalytic degradation of the fungicide thiabendazole was optimized by treating C-ZnO with 10% H2/Ar gas at 500 degrees C over 5 h. The formation of oxygen vacancies and their catalytic activity were compared before and after the reduction treatment based on their characterization analysis (e.g., TPR, FE-SEM, EDS, XPS, Tauc plot, XRD, and BET). Our most recent kinetic modeling was carried out on the experiments using C-ZnO and T500 at different pH values. The highest adsorption removal and photocatalytic degradation rate (and quantum yield) was occurred at pH 3 and 11, respectively. Good reusability of the optimal reduced catalyst was confirmed when tested over five cycles. A strong compatibility between the kinetic modeling results and all characterization analyses supports the potent role of reduction treatment for the modification of oxygen vacancies on photocatalysis.
Keywords
Oxygen vacancy, Photocatalysis, ZnO, Kinetic modeling, Adsorption, ENHANCED PHOTOCATALYTIC ACTIVITY, BAND-GAP, TRANSFORMATION PRODUCTS, VISIBLE ACTIVITY, DEGRADATION, WATER, TIO2, SURFACE, LIGHT, NANOPARTICLES

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MLA
Ranjbari, Alireza, et al. “Oxygen Vacancy Modification of Commercial ZnO by Hydrogen Reduction for the Removal of Thiabendazole : Characterization and Kinetic Study.” APPLIED CATALYSIS B-ENVIRONMENTAL, vol. 324, 2023, doi:10.1016/j.apcatb.2022.122265.
APA
Ranjbari, A., Demeestere, K., Kim, K.-H., & Heynderickx, P. (2023). Oxygen vacancy modification of commercial ZnO by hydrogen reduction for the removal of thiabendazole : characterization and kinetic study. APPLIED CATALYSIS B-ENVIRONMENTAL, 324. https://doi.org/10.1016/j.apcatb.2022.122265
Chicago author-date
Ranjbari, Alireza, Kristof Demeestere, Ki-Hyun Kim, and Philippe Heynderickx. 2023. “Oxygen Vacancy Modification of Commercial ZnO by Hydrogen Reduction for the Removal of Thiabendazole : Characterization and Kinetic Study.” APPLIED CATALYSIS B-ENVIRONMENTAL 324. https://doi.org/10.1016/j.apcatb.2022.122265.
Chicago author-date (all authors)
Ranjbari, Alireza, Kristof Demeestere, Ki-Hyun Kim, and Philippe Heynderickx. 2023. “Oxygen Vacancy Modification of Commercial ZnO by Hydrogen Reduction for the Removal of Thiabendazole : Characterization and Kinetic Study.” APPLIED CATALYSIS B-ENVIRONMENTAL 324. doi:10.1016/j.apcatb.2022.122265.
Vancouver
1.
Ranjbari A, Demeestere K, Kim K-H, Heynderickx P. Oxygen vacancy modification of commercial ZnO by hydrogen reduction for the removal of thiabendazole : characterization and kinetic study. APPLIED CATALYSIS B-ENVIRONMENTAL. 2023;324.
IEEE
[1]
A. Ranjbari, K. Demeestere, K.-H. Kim, and P. Heynderickx, “Oxygen vacancy modification of commercial ZnO by hydrogen reduction for the removal of thiabendazole : characterization and kinetic study,” APPLIED CATALYSIS B-ENVIRONMENTAL, vol. 324, 2023.
@article{01GKR0FX1A2RRKVMM6VJ6VR6KJ,
  abstract     = {{The effect of temperature-programmed H2 reduction on modification of surface oxygen vacancies in commercial ZnO (C-ZnO) is investigated. The photocatalytic degradation of the fungicide thiabendazole was optimized by treating C-ZnO with 10% H2/Ar gas at 500 degrees C over 5 h. The formation of oxygen vacancies and their catalytic activity were compared before and after the reduction treatment based on their characterization analysis (e.g., TPR, FE-SEM, EDS, XPS, Tauc plot, XRD, and BET). Our most recent kinetic modeling was carried out on the experiments using C-ZnO and T500 at different pH values. The highest adsorption removal and photocatalytic degradation rate (and quantum yield) was occurred at pH 3 and 11, respectively. Good reusability of the optimal reduced catalyst was confirmed when tested over five cycles. A strong compatibility between the kinetic modeling results and all characterization analyses supports the potent role of reduction treatment for the modification of oxygen vacancies on photocatalysis.}},
  articleno    = {{122265}},
  author       = {{Ranjbari, Alireza and Demeestere, Kristof and Kim, Ki-Hyun and Heynderickx, Philippe}},
  issn         = {{0926-3373}},
  journal      = {{APPLIED CATALYSIS B-ENVIRONMENTAL}},
  keywords     = {{Oxygen vacancy,Photocatalysis,ZnO,Kinetic modeling,Adsorption,ENHANCED PHOTOCATALYTIC ACTIVITY,BAND-GAP,TRANSFORMATION PRODUCTS,VISIBLE ACTIVITY,DEGRADATION,WATER,TIO2,SURFACE,LIGHT,NANOPARTICLES}},
  language     = {{eng}},
  pages        = {{18}},
  title        = {{Oxygen vacancy modification of commercial ZnO by hydrogen reduction for the removal of thiabendazole : characterization and kinetic study}},
  url          = {{http://doi.org/10.1016/j.apcatb.2022.122265}},
  volume       = {{324}},
  year         = {{2023}},
}
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