Tuning the size of photo-deposited metal nanoparticles via manipulating surface defect structures of TiO2 nanocrystals

Xian Zhou; Kun Qian; Yunshang Zhang; Dan Li; Zeyue Wei; Huijuan Wang; Run Ye; Jiandang Liu; Bangjiao Ye; Weixin Huang

doi:10.1039/C9CC09642F

Tuning the size of photo-deposited metal nanoparticles via manipulating surface defect structures of TiO₂ nanocrystals†

Xian Zhou,^a Kun Qian,*^a Yunshang Zhang,^a Dan Li,^a Zeyue Wei,^a Huijuan Wang,^b Run Ye,

^c Jiandang Liu,^c Bangjiao Ye^c and Weixin Huang

*^a

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* Corresponding authors

^a Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion, and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, China
E-mail: qiankun@ustc.edu.cn, huangwx@ustc.edu.cn

^b Engineering and Materials Science Experiment Center, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, China

^c State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, China

Abstract

Here we report a new method for controlling photo-deposited metal nanoparticle size by manipulating surface defect structures of TiO₂ nanocrystals. Our results demonstrate that the isolated oxygen vacancy could serve as an electron trapper while the oxygen vacancy cluster could act as an electron–hole recombination site in the photo-deposition process.

Chemical Communications

Tuning the size of photo-deposited metal nanoparticles via manipulating surface defect structures of TiO₂ nanocrystals†

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Tuning the size of photo-deposited metal nanoparticles via manipulating surface defect structures of TiO₂ nanocrystals

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