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

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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.

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Authors and Affiliations

  1. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics & Optoelectronic Technology, Dalian University of Technology, Dalian, 116024, China

    Shuai Li, Qiang Tao, Dawei Li & Qingyu Zhang

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  1. Shuai Li
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  2. Qiang Tao
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  3. Dawei Li
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  4. Qingyu Zhang
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Correspondence to Qingyu Zhang.

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Li, S., Tao, Q., Li, D. et al. Controlled anisotropic growth of Ag nanoparticles on oil-decorated TiO2 films with photocatalytic reduction method. Journal of Materials Research 29, 2497–2504 (2014). https://doi.org/10.1557/jmr.2014.283

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  • DOI: https://doi.org/10.1557/jmr.2014.283

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