ZnO/Ag/CdO nanocomposite for visible light-induced photocatalytic degradation of industrial textile effluents.
A ternary ZnO/Ag/CdO nanocomposite was synthesized using thermal decomposition method. The resulting nanocomposite was characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, UV-Vis spectroscopy, and X-ray photoelectron spectroscopy. The ZnO/Ag/CdO nanocomposite exhibited enhanced photocatalytic activity under visible light irradiation for the degradation of methyl orange and methylene blue compared with binary ZnO/Ag and ZnO/CdO nanocomposites. The ZnO/Ag/CdO nanocomposite was also used for the degradation of the industrial textile effluent (real sample analysis) and degraded more than 90% in 210 min under visible light irradiation. The small size, high surface area and synergistic effect in the ZnO/Ag/CdO nanocomposite is responsible for high photocatalytic activity. These results also showed that the Ag nanoparticles induced visible light activity and facilitated efficient charge separation in the ZnO/Ag/CdO nanocomposite, thereby improving the photocatalytic performance.
Department of Chemical Engineering and Biotechnology, University of Chile, Beauchef 850, Santiago, Chile; Nanoscale Materials Laboratory, Department of Materials Science, University of Chile, Avenida Tupper 2069, Santiago, Chile. Electronic address: saravanan3.raj@gmail.com.
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Saravanan
School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk 712-749, South Korea.
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Mansoob Khan
Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India; Center for Environment and Water, The Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia; Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa.
Vinod Kumar
VK
Gupta
Nanoscale Materials Laboratory, Department of Materials Science, University of Chile, Avenida Tupper 2069, Santiago, Chile.
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Mosquera
Department of Chemical Engineering and Biotechnology, University of Chile, Beauchef 850, Santiago, Chile.
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Gracia
Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
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Narayanan
Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai 600 025, India. Electronic address: Stephen_arum@hotmail.com.
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Stephen
D001391:Azo Compounds / Q000737:chemistry*; D019187:Cadmium Compounds / Q000737:chemistry*; D002384:Catalysis; D007700:Kinetics; D008027:Light; D008751:Methylene Blue / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D010782:Photolysis; D012834:Silver / Q000737:chemistry*; D013784:Textiles; D013816:Thermodynamics; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods; D015034:Zinc Oxide / Q000737:chemistry*
D001391:Azo Compounds; D019187:Cadmium Compounds; D008751:Methylene Blue; D010087:Oxides; D012834:Silver; D062065:Wastewater; D014874:Water Pollutants, Chemical; D015034:Zinc Oxide; C029663:cadmium oxide; C100258:methyl orange
Industrial textile effluent; Nanocomposite; Photocatalysis; Visible light; ZnO/Ag/CdO