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  1. Powder metallurgical fabrication and characterization of nanostructured porous NiTi shape-memory alloy
Ultra-deep photocatalytic oxidative desulfurization of liquid fuels by Ti@CeO2/ZnO nanophotocatalyst under visible light and mild operating conditions
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Ultra-deep photocatalytic oxidative desulfurization of liquid fuels by Ti@CeO2/ZnO nanophotocatalyst under visible light and mild operating conditions

Beshtar, M

Ultra-deep photocatalytic oxidative desulfurization of liquid fuels by Ti@CeO2/ZnO nanophotocatalyst under visible light and mild operating conditions

Beshtar, M ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jiec.2024.01.017
  3. Publisher: 2024
  4. Abstract:
  5. Herein, various Ti@CeO2/ZnO nanophotocatalysts (TxCZ, x: the molar ratio of Ti to Ce and Zn) were synthesized using the solvothermal method in two stages. After that, the effectiveness of the fabricated catalysts in the photocatalytic oxidative desulfurization (PODS) reaction were assessed. The physicochemical properties of the synthesized samples were analyzed through the implementation of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), photoluminescence spectroscopy (PL), and electron paramagnetic resonance (EPR) techniques. The study evaluated the impact of varying levels of titanium loading on the physicochemical characteristics of nanoparticles and the elimination of sulfur compounds. Under the optimal reaction conditions of T = 50 °C, 1.5 g/L of photocatalyst dosage, an oxidant to sulfur molar ratio of 6, and a solvent to fuel volume ratio of 1, the TxCZ sample exhibited superior performance by completely removing dibenzothiophene (DBT) from the model fuel. Kinetic studies indicate that the PODS reaction adheres to the pseudo-first-order kinetic model, with an observed activation energy of 69.25 kJ/mol−1. © 2024 The Korean Society of Industrial and Engineering Chemistry
  6. Keywords:
  7. Dibenzothiophene ; Photocatalytic oxidative desulfurization ; Pseudo-first-order kinetic model ; Activation energy ; Desulfurization ; Electron energy loss spectroscopy ; Electron spin resonance spectroscopy ; Energy dispersive spectroscopy ; Field emission microscopes ; Fourier transform infrared spectroscopy ; High resolution transmission electron microscopy ; Kinetic parameters ; Kinetic theory ; Molar ratio ; Paramagnetic resonance ; Photocatalytic activity ; Photoluminescence spectroscopy ; Physicochemical properties ; Scanning electron microscopy ; Sulfur compounds ; Titanium ; Desulfurization reaction ; Dibenzothiophenes ; Oxidative desulfurization ; Photo-catalytic ; Photocatalytic oxidative desulphurization ; Pseudo-first order kinetic model ; Synthesised ; Titania ; Ultra deeps ; Cerium oxide
  8. Source: Journal of Industrial and Engineering Chemistry ; Volume 134 , 2024 , Pages 548-560 ; 1226086X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1226086X24000170