Enhanced Optical and Sensing Properties of One-Step Synthesized Pt−ZnO Nanoflowers

Pt−ZnO nanoflowers are prepared via a novel one-step hydrothermal route, and Pt nanoparticles are uniformly loaded on the whole surface of the nanoflowers. The growth mechanism of Pt−ZnO nanoflowers is proposed to be a four-stage process. With the help of Raman scattering, photoluminescence, and gas...

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Published in:Journal of physical chemistry. C 2010-11, Vol.114 (43), p.18607-18611
Main Authors: Xue, Xin-Yu, Chen, Zhao-Hui, Xing, Li-Li, Ma, Chun-Hua, Chen, Yu-Jin, Wang, Tai-Hong
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Language:English
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C: Surfaces, Interfaces, Catalysis
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description Pt−ZnO nanoflowers are prepared via a novel one-step hydrothermal route, and Pt nanoparticles are uniformly loaded on the whole surface of the nanoflowers. The growth mechanism of Pt−ZnO nanoflowers is proposed to be a four-stage process. With the help of Raman scattering, photoluminescence, and gas sensing measurements, it has been demonstrated that the optical and sensing properties of Pt−ZnO nanoflowers are greatly enhanced. The surface defects decrease, the concentration of bound excitons under UV illumination increases, and the surface adsorption is enhanced and accelerated. These probably arise from the chemical and electrical effect of Pt. Our results could provoke a promising direction to achieve higher optical and sensing properties of ZnO one-dimensional nanostructures.
doi_str_mv 10.1021/jp1070067
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title Enhanced Optical and Sensing Properties of One-Step Synthesized Pt−ZnO Nanoflowers
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