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Plasmonics

, Volume 13, Issue 6, pp 2345–2351 | Cite as

Effect of Configuration on the Photocatalytic Activity of AgNPs-TiO2 System

  • Huanhuan Li
  • Qingmeng Wu
  • Lihua Liu
  • Bing Zhang
  • Mengting Si
  • Zhong Li
  • Qi Jin
  • Yiqing Chen
  • Jie Shen
  • Yingcui Fang
Article
  • 97 Downloads

Abstract

This paper studies the effect of the configuration of silver nanoparticles (AgNPs)-TiO2 on the visible-light-driven photocatalytic activity (PA). Three configurations were fabricated by vacuum thermal deposition: configuration I, AgNPs deposited on the surface of TiO2 thin films; configuration II, AgNPs deposited on a glass and covered by TiO2 thin films; and configuration III, AgNPs deposited on the surface of TiO2 thin films and covered by TiO2. The PAs of the three configurations were studied and compared. Our study indicates that configuration II is the most cost-efficient one, while configuration III could obtain the highest visible light-induced PA. The maximum of PA could be achieved when the top layer of TiO2 is less than 2 nm. The mechanisms were discussed from three aspects, the influence of TiO2 thickness on the localized surface plasma resonance (LSPR) of AgNPs, the separation, and the transportation of hot carriers. By this study, the most effective way to make use of the PA of TiO2-AgNPs was scientifically searched out.

Keywords

Photocatalytic activity Configuration of AgNPs-TiO2 LSPR of AgNPs Hot electrons transportation 

Notes

Acknowledgements

This work is supported by the Natural Science Foundation of China (No. 11674081, 61671155) and the Natural Science Foundation of Anhui Province (No. 1708085MA11).

Supplementary material

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Vacuum Science and TechnologyHefei University of TechnologyHefeiChina
  2. 2.Department of Materials Science and EngineeringHefei University of TechnologyHefeiChina
  3. 3.Department of Materials ScienceFudan UniversityShanghaiChina

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