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Production of Fuel from Carbon Dioxide Using Elements Doped on the Photocatalytic Nanoparticles of Titanium Oxide

Nematollahi, Reza | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52581 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ghotbi, Cyrus; Khorasheh, Farhad; Larimi, Afsaneh Sadat
  7. Abstract:
  8. Carbon dioxide photocatalytic reduction is one of the promising methods used to produce a wide range of renewable hydrocarbon fuels using sunlight in the presence of photocatalysts. In this study, a series of Nickel and Bismuth doped titanium dioxide samples were synthesized by Sol-gel method. After performing photocatalytic carbon dioxide recovery experiments and finding the optimum percentage of Nickel and Bismuth doped titanium dioxide,Ni and Bi co-doped TiO2 sample showed the highest photocatalytic activity. Amount of methane production was 21.13 μmol/gcat in the presence of co-doped sample that was about 6.5 times higher than the amount of methane produced in the presence of pure TiO2 (3.26 μmol/gcat). The synthesized nanophotocatalysts were characterized using X-ray diffraction (XRD) analysis, diffuse reflectance spectroscopy (DRS) analysis, Fourier-Transform Infrared spectroscopy (FTIR), Energy Dispersive X-ray Spectroscopy (EDS) and photoluminescence (PL) analysis. Also, their specific surface area was measured by BET method and morphology of the particles was investigated by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Finally, the results of the photocatalytic activity of the samples in the reaction of carbon dioxide reduction were in accordance with the characterization analysis of the synthesized photocatalysts, indicating that the correct modification of the photocatalytic activity of pure titanium dioxide was correct
  9. Keywords:
  10. Nanophotocatalyst ; Titanium Dioxide ; Bismuth ; Nickel ; Carbon Dioxide Reduction

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