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Physiochemical evaluation of a ternary magnetic MIL-101(Fe)–GO–Fe3O4 utilized for photocatalytic conversion of CO2 into methanol under ultraviolet light irradiation

Shahi, M.S.M ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1134/S0036024423070178
  3. Publisher: Pleiades Publishing , 2023
  4. Abstract:
  5. Abstract: In this research, photocatalytic conversion of CO2 to methanol was investigated under ultraviolet (UV-A) light. For this purpose, a number of the metal–organic framework photocatalysts, including MIL-101(Fe), graphene oxide (GO), GO–iron oxide (Fe3O4), MIL-101(Fe)–GO–Fe3O4 5, 10, and 20% were synthesized and characterized by X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy (RAMAN), scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy/map (EDS/map), Brunauer–Emmett–Teller (BET) surface area analysis and Barrett–Joyner–Halenda (BJH), UV–Vis diffuse reflectance spectroscopy (DRS), and value stream mapping (VSM) techniques. The effects of Fe3O4 weight percent on the catalyst properties, and the effect of photocatalyst dosage on the process was investigated. The results show that the catalyst with 10% weight Fe3O4 has the most suitable characteristic for this reason. In optimal conditions, 2212 mg/L of methanol was produced by 0.5 g of MIL‑101–GO–Fe3O4 10% magnetic photocatalyst at 120 min. The reusability of the catalyst was investigated for five cycles. The results showed that it could be used with 4% reduction in performance. Based on the results of the magnetic photocatalyst used, it is environmentally friendly, cost-effective, and highly efficient in mild conditions. © 2023, Pleiades Publishing, Ltd
  6. Keywords:
  7. CO2 ; Conversion ; Magnetic photocatalytic ; Methanol ; MIL-101(Fe)–GO–Fe3O4
  8. Source: Russian Journal of Physical Chemistry A ; Volume 97, Issue 7 , 2023 , Pages 1601-1614 ; 00360244 (ISSN)
  9. URL: https://link.springer.com/article/10.1134/S0036024423070178