Heterogeneous lollipop-like V2O5/ZnO array: A promising composite nanostructure for visible light photocatalysis

Reference:

Zou, C. W., Rao, Y. F., Alyamani, A., Chu, W., Chen, M. J., Patterson, D. A., Emanuelsson, E. A. C. and Gao, W., 2010. Heterogeneous lollipop-like V2O5/ZnO array: A promising composite nanostructure for visible light photocatalysis. Langmuir, 26 (14), pp. 11615-11620.

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Official URL:

http://dx.doi.org/10.1021/la101324e

Abstract

ZnO/V2O5 core−shell nanostructures have been prepared by a two-step synthesis route through combined hydrothermal growth and magnetron sputtering. After annealing under oxygen ambience, a ZnO/V2O5 heterogeneous lollipop-like nanoarray formed. The microstructure and crystal orientation of those nanolollipops were investigated by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM), which show single crystal structure. The optical properties were characterized by UV−vis spectroscopy and showed quite different absorption curves for the as-deposited and annealed samples. The ZnO/V2O5 nanolollipops demonstrated excellent photocatalytic activity in terms of decomposing 2,6-dichlorophenol (2,6-DCP) under visible light, indicating their promising potential as catalysts for industrial wastewater and soil pollution treatments.

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