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Synthesis of Metal-Organic Framework Nano-Porous Catalyst for Degrading Organic Pollutants (Dyes) in Wastewater

Mirzaieazar, Hedieh | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52616 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kazemeini, Mohammad; Mahmoodi, Niyaz Mohammad
  7. Abstract:
  8. Nanoporous metal-organic frameworks are among the new and advanced compounds that have attracted attention of researchers due to their unique properties such as high surface area, high porosity and regular structure. These compounds can catalyze and degrade pollutants. Due to the high consumption of organic compounds, especially textile dyes, the pollution caused by wastewater is increasing in various industries. Disposal of wastewater containing organic pollutants into aquatic environments can alter the natural color, change the taste of water and disturb the life of living organisms. If the dyes are left untreated in aquatic ecosystems, they can remain in the environment for a very long time, resulting in harmful and irreversible effects. In this thesis, Zeolitic imidazolate framework-8 (ZIF-8) with high surface area and high catalytic potential was synthesized and characterized by FTIR, XRD, TG, TEM, BET and DRS. Photocatalytic activity of ZIF-8 for degradation of Rhodamine B (RhB) and Methylene blue (MB) dyes, as contaminants, in aqueous solution under LED light is investigated. The parameters affecting the degradation of the RhB dye such as nanoporous photocatalyst content, dye concentration and pH in the dye solution were studied. Eventually, a mechanism was proposed to justify dechlorination of MB dye under visible light irradiation in presence of ZIF-8
  9. Keywords:
  10. Metal-Organic Framework ; Degradation Pollutants ; Organic Pollutant ; Dye Wastewater ; Zeolite Imidazolate Framework ; Nanoporous Catalyst

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