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Preparation of hollow porous Cu2O microspheres and photocatalytic activity under visible light irradiation

Yuan Yu1, Liying Zhang1*, Jian Wang1, Zhi Yang1, Mingce Long2, Nantao Hu1 and Yafei Zhang1*

Author affiliations

1 Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China

2 School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

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Citation and License

Nanoscale Research Letters 2012, 7:347  doi:10.1186/1556-276X-7-347

Published: 27 June 2012

Abstract

Cu2O p-type semiconductor hollow porous microspheres have been prepared by using a simple soft-template method at room temperature. The morphology of as-synthesized samples is hollow spherical structures with the diameter ranging from 200 to 500 nm, and the surfaces of the spheres are rough, porous and with lots of channels and folds. The photocatalytic activity of degradation of methyl orange (MO) under visible light irradiation was investigated by UV-visible spectroscopy. The results show that the hollow porous Cu2O particles were uniform in diameters and have an excellent ability in visible light-induced degradation of MO. Meanwhile, the growth mechanism of the prepared Cu2O was also analyzed. We find that sodium dodecyl sulfate acted the role of soft templates in the synthesis process. The hollow porous structure was not only sensitive to the soft template but also to the amount of reagents.

Keywords:
Cu2O; Hollow porous microspheres; Photocatalytic; Visible light