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Controlled anisotropic growth of Ag nanoparticles on oil-decorated TiO2 films with photocatalytic reduction method

Published online by Cambridge University Press:  03 November 2014

Shuai Li ,
Qiang Tao ,
Dawei Li  and
Qingyu Zhang
Shuai Li
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
Qiang Tao
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
Dawei Li
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
Qingyu Zhang*
Affiliation:
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Ag–TiO2 hybrids are useful in various applications, such as photocatalysis, solar energy conversion, and biosensoring. In this study, oil-decorated TiO2 films were used to induce the formation of Ag nanoplates in AgNO3 solution via a photocatalytic method. Ag nanoplates in the products can be controlled by changing the oil-decoration time of films or changing the AgNO3 concentration of the solution. Oil decoration was found to be necessary in the formation of Ag nanoplates, and a critical concentration of AgNO3 solution was needed. The oil layer on the TiO2 films was demonstrated to play a role in the prevention of the reoxidation of the Ag atoms, and a growth model was proposed to interpret the formation of Ag nanoplates on the oil-decorated TiO2 films.

Keywords

Ag nanoparticlesanisotropic growthphotocatalysisplasmonics
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 21 , 14 November 2014 , pp. 2497 - 2504
Copyright
Copyright © Materials Research Society 2014 

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References

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