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Korean Journal of Chemical Engineering, Vol.31, No.4, 587-592, 2014
Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products
A heterostructure of Ag/ZnO powder was prepared by a reduction of Ag(NH3)2+ ions in a basic solution or Tollen’s reagent. From this method, the existence of a metallic Ag coating on the ZnO surface was confirmed by transmission electron microscope and x-ray photoelectron spectroscopy. The photocatalytic activity of the Ag/ZnO powders was investigated by analyzing the degradation of an aqueous methylene blue solution under a blacklight irradiation. Furthermore, the parameters, including Ag content, catalyst loading, initial dye concentration and pH, were
also studied. After the methylene blue solution was irradiated for 30min under a blacklight illumination, total mineralization was not observed as the presence of some carbon compound species was indicated in a mass spectrum. Furthermore, the toxicity of the treated methylene blue solution produced by the Ag/ZnO powders was also investigated by a test for the inhibition of the growth of Chlorella vulgaris.
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[Cited By]
- Prasad KS, Prajapati S, Selvaraj K, Korean Journal of Chemical Engineering, 32(10), 1986, 2015
- Lee SH, Yang SW, Lim DH, Yoo DJ, Lee CK, Kang GM, Kang Y, Korean Chemical Engineering Research, 53(5), 597, 2015
- Valizadeh S, Rasoulifard MH, Dorraji MSS, Korean Journal of Chemical Engineering, 33(2), 481, 2016
- Gholami M, Shirzad-Siboni M, Yang JK, Korean Journal of Chemical Engineering, 33(3), 812, 2016
- Yang SW, Lee SH, Lim DH, Yoo DJ, Kang Y, Korean Chemical Engineering Research, 54(3), 299, 2016
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