Hierarchical visible-light-response Ag/AgCl@TiO2 plasmonic photocatalysts for organic dye degradation

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A plasmonic photocatalyst of Ag/AgCl@TiO2 nanoparticles (NPs) was directly prepared by a one-step sonochemical method. Both Ag NPs and AgCl were co-deposited on TiO2 NPs to form Ag@TiO2 and Ag/AgCl@TiO2 using the method. Due to the localized surface plasmonic effects of Ag NPs, the visible-light absorbance of the Ag/AgCl@TiO2 photocatalyst was dramatically increased and the photocatalytic activity to decompose Rhodamine B was much improved under visible light. In addition, due to the advantages of the sonochemical approach, only a very small amount of Ag is required to obtain a high photocatalytic activity in the plasmonic catalyst. The mechanism for the enhancement of the visible-light-driven photocatalytic activities was also analyzed.
Publisher
IOP PUBLISHING LTD
Issue Date
2013-10
Language
English
Article Type
Article
Keywords

AG-AT-AGCL; HIGHLY EFFICIENT; SENSITIZED TIO2; QUANTUM DOTS; RHODAMINE-B; NANOPARTICLES; IRRADIATION; PERFORMANCE; XPS

Citation

NANOTECHNOLOGY, v.24, no.40

ISSN
0957-4484
DOI
10.1088/0957-4484/24/40/405706
URI
http://hdl.handle.net/10203/192948
Appears in Collection
NE-Journal Papers(저널논문)
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