Bulletin of the Korean Chemical Society

  • 제22권12호
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  • Pages.1371-1374
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  • 2001
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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UV Light Induced Photocatalytic Degradation of Cyanides in Aqueous Solution over Modified $TiO_2$

  • 발행 : 20011200
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초록

Metal doping was adopted to modify TiO2 (P-25) and enhance the photocatalytic degradation of harmful cyanides in aqueous solution. Ni, Cu, Co, and Ag doped TiO2 were found to be active photocatalysts for UV light induced degradation of aqueous cyanides generating cyanate, nitrate and ammonia as main nitrogen-containing products. The photoactivity of Ni doped TiO2 was greatly affected by the state of Ni, that is, the crystal size and the degree of reduction of Ni. The modification effects of some mixed oxides, that is, Ni-Cu/TiO2 were also studied. The activity of Ni-Cu/TiO2 for any ratio of Cu/Ni was higher than that of Ni- or Cu-doped TiO2, and the catalyst at the Cu/Ni ratio of 0.3 showed the highest activity for cyanide conversion.

키워드

참고문헌

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피인용 문헌

  1. Effect of surface hydroxyl groups of pure TiO2 and modified TiO2 on the photocatalytic oxidation of aqueous cyanide vol.21, pp.1, 2001, https://doi.org/10.1007/bf02705388
  2. Visible Light Driven ZnFe2Ta2O9 Catalyzed Decomposition of H2S for Solar Hydrogen Production vol.28, pp.11, 2001, https://doi.org/10.5012/bkcs.2007.28.11.2089
  3. Photoinduced growth of Cu nanoparticles on ZnO from CuCl2 in methanol vol.9, pp.3, 2001, https://doi.org/10.1007/s11051-006-9087-4
  4. Enhancement of cyanide photocatalytic degradation using sol-gel ZnO sensitized with cobalt phthalocyanine vol.54, pp.1, 2001, https://doi.org/10.1007/s10971-009-2145-5
  5. Preparation and characterization of antimicrobial Ce-doped ZnO nanoparticles for photocatalytic detoxification of cyanide vol.123, pp.2, 2010, https://doi.org/10.1016/j.matchemphys.2010.05.019
  6. Synergistic effects of Ni and Cu supported on TiO2 and SiO2 on photocatalytic H2 evolution with an electron donor–acceptor linked molecule vol.5, pp.2, 2001, https://doi.org/10.1039/c4cy01128g