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- W2003705325 abstract "• ZnO-core/ZnFe 2 O 4 -shell nanocable arrays obtained using ZnO-nanowire-array template. • Superior visible-light-driven photocatalytic activity of ZnO/ZnFe 2 O 4 nanocable arrays. • Visible-light-active ZnFe 2 O 4 and type II band alignment between ZnO and ZnFe 2 O 4 . ZnO-core/ZnFe 2 O 4 -shell nanocable arrays on the sapphire substrate were grown using a simple sacrificial ZnO-nanowire-array templating method. When comparing to pure ZnO nanowire arrays (the “core” only) or ZnFe 2 O 4 nanotube arrays (the “shell” only), the ZnO/ZnFe 2 O 4 nanocable arrays have demonstrated the highest photodegradation capability of rhodamine B (RhB) under visible light illumination. Although all three nanostructure arrays showed photocatalytic activities under visible light, their degradation pathway are found to be different. The least effective dye-sensitization mechanism is responsible for the RhB degradation in the presence of ZnO nanowire arrays, while the highly-reactive radicals produced by photogenerated electron–hole pairs in visible-light-excited ZnFe 2 O 4 contributes to RhB degradation in both ZnO/ZnFe 2 O 4 nanocable arrays and ZnFe 2 O 4 nanotube arrays. The type II band alignment between ZnO and ZnFe 2 O 4 leads to effective charge carrier separation in the nanocable arrays, but is absent in the case of ZnFe 2 O 4 nanotube arrays. This explains the more efficient RhB decomposition in the presence of the ZnO-core/ZnFe 2 O 4 -shell nanocable arrays." @default.
- W2003705325 created "2016-06-24" @default.
- W2003705325 creator A5058837753 @default.
- W2003705325 creator A5080658884 @default.
- W2003705325 creator A5088205011 @default.
- W2003705325 date "2014-11-01" @default.
- W2003705325 modified "2023-10-13" @default.
- W2003705325 title "Visible-light-driven photocatalytic properties of ZnO/ZnFe2O4 core/shell nanocable arrays" @default.
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- W2003705325 doi "https://doi.org/10.1016/j.apcatb.2014.05.047" @default.
- W2003705325 hasPublicationYear "2014" @default.
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