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Enhanced visible-light photocatalytic oxidative desulfurization of model fuel over Pt-decorated carbon-doped TiO2 nanoparticles

Ostovar, A ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1007/s11356-023-26597-y
  3. Publisher: NIH , 2024
  4. Abstract:
  5. Modification of photocatalysts to improve their adsorption and photocatalytic activity in the oxidative desulfurization of liquid fuels has been reported by many investigators. In this study, Pt-decorated carbon-doped TiO2 nanoparticles were synthesized by hydrothermal and photo-deposition techniques and were subsequently used in photocatalytic oxidative desulfurization of dibenzothiophene (DBT) in n-heptane as a simulated liquid fuel with methanol as the extracting solvent. Carbon-doped TiO2 was first synthesized by a simple self-doping method. Pt was then loaded by a photo-deposition technique. The synthesized photocatalysts (labeled as YPt-CT where Y is percent Pt loading) were characterized by of X-ray diffraction (XRD), photoluminescence (PL), field emission scanning electron microscopy (FESEM), N2-physisorption, UV-Vis diffusive reflectance spectra (UV-Vis DRS), transmission electron microscopy (TEM), Fourier transform infrared spectra (FTIR), and nitrogen sorption measurements. The removal efficiency of DBT was 98% in the presence of 2 g/l of 0.5Pt-CT catalyst under visible-light irradiation (λ > 400 nm), ambient pressure, and reaction temperature of 40°C. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023
  6. Keywords:
  7. First-order reaction ; Oxidative desulfurization ; Photocatalysis ; Photooxidative degredation ; Titanium dioxide ; Visible-light active ; Carbon
  8. Source: Environmental Science and Pollution Research ; Volume 31, Issue 12 , 2024 , Pages 18188-18199 ; 09441344 (ISSN)
  9. URL: https://pubmed.ncbi.nlm.nih.gov/36952170