Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

Suwei Zhang; Bo-ping Zhang; Shun Li; Zhicheng Huang; Chushu Yang; Huiying Wang

doi:10.1007/s40145-016-0209-x

Journal of Advanced Ceramics (Mar 2017)

Enhanced photocatalytic activity in Ag-nanoparticle-dispersed BaTiO3 composite thin films: Role of charge transfer

Suwei Zhang,
Bo-ping Zhang,
Shun Li,
Zhicheng Huang,
Chushu Yang,
Huiying Wang

Affiliations

Suwei Zhang: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing
Bo-ping Zhang: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing
Shun Li: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing
Zhicheng Huang: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing
Chushu Yang: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing
Huiying Wang: Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing

DOI: https://doi.org/10.1007/s40145-016-0209-x
Journal volume & issue: Vol. 6, no. 1
pp. 1 – 10

Abstract

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Abstract Optical absorption and photocatalytic activity can be enhanced by surface plasmon resonance (SPR) effect, but the charge transfer (CT) mechanism between the dispersed noble metal nanoparticles (NPs) and the semiconductor matrix has been ignored. Herein, we adduce a direct and strong evidence in Ag-nanoparticle-dispersed BaTiO3 (Ag/BTO) composite films through X-ray photoelectron and photoluminescence spectra which reveals the CT from BTO trapped by Ag NPs under UV light and from Ag NPs to BTO under visible light. Owing to the broadened optical absorption and efficient CT from Ag NPs to BTO, the Ag25/BTO film manifests the optimal photocatalytic activity under the irradiation of visible light rather than UV–Vis light. Our work provides a helpful insight to design highly efficient plasmonic photocatalyst through considering the synergetic effect of the CT between metal and semiconductor on the enhanced photocatalytic activity.

Published in Journal of Advanced Ceramics

ISSN: 2226-4108 (Print); 2227-8508 (Online)
Publisher: Tsinghua University Press
Country of publisher: China
LCC subjects: Technology: Chemical technology: Clay industries. Ceramics. Glass
Website: https://www.sciopen.com/journal/2226-4108

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