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Microwave Assisted Synthesis of Sno2 Nanoparticles from Sn Coated Cu Wire Scraps

Seza, Ashkan | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50075 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Sadrnezhaad, Kh; Mohammadi, MohammadReza
  7. Abstract:
  8. Tin Oxide Nanoparticle (SnO2) with the band gap of around 3.6 eV is one of the promising materials in various fields such as photocatalysis water splitting, pollutant removal and also biotechnology. Inorder to use this material in a visible-light rang, some promotions should be conducted.By combining SnO2 nanoparticles with the non-metalic graphitic carbon nitride (g-C3N4), a proper nanocomposite with wide range of application can be obtained. But, in order to industrialize this material, the cost of the final product is an imperative issue to consider.Here we have introduced a novel and low-cost method for synthesis of g-C3N4/SnO2 nanocomposite by using urea as a precursor for g-C3N4 and Sn-coated Cu wire scraps as tin source. By this procedure cupper as a valuable metal has been recycled and coated tin has supplied efficient orecursor for SnO2 formation. Moreover, by preparing SnCl2 solution as a catalyst, proper situation for synthesise C3N4 has been prepared.For preparing g-C3N4/SnO2 nanocomposite, we also used microwave radiation as heating source that led to the reduction in consumption of time and energy that will make a promising prospect for industrializing process. The obtained porous nanocomposite had a high specific surface area of 195 m2 g-1 which showed high efficiency photoelectrochemical water-splitting ability. Photocurrent density of 33 μA cm-2 was achieved at an applied potential of 0.5 V when testing the nanocomposite as photo-anode in water-splitting reactions under the visible light irradiation, introducing it as a promising visible light photoactive material.The synthesized nanocomposites were characterized by HR-TEM, FE-SEM, FTIR, XRD, BET and UV-VIS spectroscopy. Investigation on photocatalytic degradation of methylene blue (MB) aqueous solution has been conducted under visible light irradiation
  9. Keywords:
  10. Microwave ; Water Splitting ; Tin Oxide ; Recovery ; Carbon Nitride Nanorod ; Copper Wire

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