Proceedings of the Materials Research Society of Korea Conference (한국재료학회:학술대회논문집)

Materials Research Society of Korea (한국재료학회)
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Parameters affecting the recovery of silver (Ag) using photocatalytic ZnO nanopowder prepared by solution-combustion method.

  • B.B. Bhattarai (Dept. of Electronic Materials Engineering, SunMoon University) ;
  • Lee, Ju-Hyeon (Dept. of Electronic Materials Engineering, SunMoon University) ;
  • Park, Sung (Dept. of Inorganic Materials Engineering, Myongji University)
  • Published : 2003.05.01
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Abstract

Nanometer sized zinc oxide (ZnO) powder was synthesized by a novel "solution-combustion method" and its photocatalytic activity was evaluated with the recovery of Ag from a used photofilm developing solution. Different parameters affecting the reaction rates like wavelength of the W light used, reaction temperature, mass of the used photocatalyst, and effect of scavenger were tested. The optimum parameters were found as follows. UV wavelength of less than 385nm, reaction temperature between 40- 60 $^{\circ}C$, photocatalyst concentration of 3-6 g/1, and scavenger concentration of 0.3-0.4 g/1.

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