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Kinetics Investigation of Photocatalytic Degredation of Environmental Organic Pollutants Using ZnO-Zeolite Nano Composites

Mohaghegh, Neda | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41399 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Gholami, Mohammad Reza; Sajadi, Ali Akbar
  7. Abstract:
  8. ZnO nano particles and mordnite zeolite nano particles were prepared by precipitation method and hydrothermal method,respectively. The influence of solvent and surfactant in ZnO nano particles synthesis were studied to reform the structure of nano particles.These nano particles were based on different supports to improve and enhance their photocatalytic activities. Synthesized catalysts characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform-infra red spectra (FTIR), UV-Vis spectroscopy and BET techniques. To investigated photocatalytic activity of the synthesized catalysts under UV irradiation, they were used to degradation bio-environmental pollutants such as AB92 textile dye. Effect of different parameters such as calcination temperature, amount of catalyst, pH and initial concentration of dye, temperature, ZnO loading and … have been examined on the yield and the speed of photocatalytic degradation process of the azo dye.The optimized amount of each of the mentioned parameters were determined and activity of the synthesized photocatalysis were compared. The best catalyst for the Azo dye destruction process was nano composite of ZnO and Zeolite
  9. Keywords:
  10. Photocatalyst ; Zeolite ; Azo Dyes ; Environmental Pollutant ; Zinc Oxide ; Acid-Blue 92 ; Advanced Oxidation Process

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