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Au and Pt Nanoparticles Supported on Ni Promoted MoS2 as Efficient Catalysts for 4-Nitrophenol Reduction

Bahrami, Farnaz | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55212 (03)
  4. University: Sharif University of Technolog
  5. Department: Chemistry
  6. Advisor(s): Gholami, Mohammad Reza
  7. Abstract:
  8. Nowadays environment is under demolition from various aspects which the chemical pollution can be mentioned as an example. The aim of this research is to eliminate the 4nitrophenol as a pollutant through catalysis process. In the current study, to synthesis of the gold nanoparticles on the modified molybdenum de sulfide with nickel (MNi/MoS2 (M=Au, Pt)) an effective method was utilized. In the following, the structural and morphological features of the synthesized nano composites (MNi/MoS2) via different microscopic and macroscopic methods be identified. Obtained results from identification of the materials demonstrated the expected catalysts were synthesized successfully. Finally, to investigate the catalytic activity of synthesized nano composites (MNi/MoS2) for optimum conditions, to reduction interaction of the 4nitrophenol-4Aminophenol in the presence of Sodium borohydride (NaBH4) reducer used from them which with respect to factors such as variation of interaction velocity the value improvement of catalyst can be comprehended. Mechanism and kinetics of probable performance of catalytic reduction interaction in the presence of synthesized nano composites is investigated. The obtained results depicted that the metallic nanoparticles can impact on the operation of (MNi/MoS2) catalytic, significantly. Synergistic effect among these nanoparticles and MoS2 particles as an improvement source of catalytic features was introduced. Development of catalytic activity of MoS2 particles which is modified with nickel in comparison with unmodified nano composites is indicative the importance aspect of nickel on the catalytic efficiency
  9. Keywords:
  10. Catalitic Readuction ; Nanocomposite ; Spectroscopy ; Morphology ; Molybdenum Desulfide ; 4-Nitrophenol ; 4-Aminophenol ; Chemical Contaminant

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