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Facile in-suit synthesis of Ag/AgVO3 one-dimensional hybrid nanoribbons with enhanced performance of plasmonic visible-light photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
44881 46375 2015 10 PDF Available
Title
Facile in-suit synthesis of Ag/AgVO3 one-dimensional hybrid nanoribbons with enhanced performance of plasmonic visible-light photocatalysis
Abstract

•1-D Ag/AgVO3 nanoribbon was synthesized via in situ reduction of AgVO3 by NaBH4.•FDTD simulation confirms the SPR and electric field enhancement.•DFT indicates that Ag formed could narrow the band gap of AgVO3.•h+ and O2− are the main reactive species for degradation of BF.

The novel one-dimension Ag/AgVO3 plasmonic photocatalysts were synthesized via in situ reduction of AgVO3 by NaBH4 at room temperature. The morphologies, optical properties and electronic structures of the synthesized Ag/AgVO3 plasmonic photocatalysts were systematically characterized using a combination of theoretical calculations and experimental techniques. The photocatalytic activities of Ag/AgVO3 photocatalysts were evaluated using photocatalytic degradation of basic fuchsin (BF) dye. The results showed that the photocatalytic efficiency of Ag/AgVO3 was better than that of AgVO3. Ag/AgVO3 demonstrated a high photocatalytic activity with 93.6% of BF decomposed within 90 min. Such enhanced photocatalytic performance could be attributed to the relatively high conductivity and electron-storing capacity of Ag nanoparticles coated on AgVO3 surfaces. These Ag nanoparticles facilitate charge transfer between AgVO3 and Ag nanoparticles, and induce the localized surface plasmon resonance (SPR) that increases electric field and absorption of visible light. The results of the FDTD simulation confirmed that the SPR and the electric field enhancement were caused by the Ag nanoparticles. The theoretical calculation based on DFT indicates that Ag formed could narrow the bandgap of AgVO3 due to the fact that the Ag 5s orbital by association with Ag nanoparticles moves down the CB after hybridization. Meanwhile, the hybridization of O 2p and Ag 4d orbits of Ag/AgVO3 is weak, which is beneficial for valence band electrons to excite into the conduction band. The combined experimental results and characterizations of Ag/AgVO3 suggest that h+ and O2− are the main reactive species for degradation of BF in the visible light-catalyzed oxidation.

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Keywords
Plasmonic photocatalysts; Surface plasmon resonance; Photocatalytic activities
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Facile in-suit synthesis of Ag/AgVO3 one-dimensional hybrid nanoribbons with enhanced performance of plasmonic visible-light photocatalysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 163, February 2015, Pages 288–297
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us