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Facile synthesis of Ag-ZnO core–shell nanostructures with enhanced photocatalytic activity
A.N. Kadam,D.P. Bhopate,V.V. Kondalkar,S.M. Majhi,C.D. Bathula,Anh-Vy Tran,이상화 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.61 No.-
Ag-ZnO core–shell nanostructure (CSNS) was prepared via a facile wet chemical approach. Formation was certified by various characterization techniques. The surface plasmon band of Ag-ZnO CSNS was red-shifted. Photoluminescence quenching for Ag-ZnO CSNS was attributed to improved charge separation. Ag-ZnO CSNS exhibited ∼6 times higher photocatalytic activity than pristine ZnO and ∼4 times higher than TiO2 (P25). Such enhanced photocatalytic activity was attributed to synergistic effect, more charge separation, and higher surface area. Ag-ZnO CSNS also showed excellent photostability and reusability. Photocatalytic mechanism was discussed based on major reactive oxidative species such as OH and O2−.