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Photocatalytic Properties of α-Bi2O3 Nanoneedle Array Synthesized by Hydrothermal Method

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Abstract:

Pure α-Bi2O3 with nanoneedle array structure was synthesized directly by hydrothermal method. The optic absorption of the α-Bi2O3 paricles was cut off at ~483 nm and the band gap of the α-Bi2O3 was estimated to be 2.57 eV. The photocatalytic activity of the α-Bi2O3 samples was higher than TiO2 under a visible light irradiation. As a conclusion, relative narrow band gap of α-Bi2O3 nanoneedle array compared to anatase and the special morphology of nanoneedle array structures may improve the photocatalytic activity in visible light irradiation.

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Periodical:

Solid State Phenomena (Volumes 181-182)

Pages:

332-335

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.181-182.332

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Online since:

November 2011

Authors:

H.Y. Wang, Y.C. Yang, L. Le, Y. Liu, J.H. Wei, Rui Xiong, J. Shi

Keywords:

Hydrothermal Method, Nanoneedle Array, Photocatalysis, α-Bi2O3

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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