Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 98, Issue 3-4, Pages 138-146Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2010.05.022
Keywords
Photocatalysis; Visible-light; Bi2MoO6; Local structure; Nanosheet
Funding
- National Natural Science Foundation of China [20925725, 50972070]
- National Basic Research Program of China [2007CB613303]
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Highly crystalline orthorhombic Bi2MoO6 particles with high visible-light photocatalytic activity have been controllably synthesized via a facile hydrothermal process without adding any surfactant. The morphologies of Bi2MoO6 with nanosheet and microrod can be selectively obtained by adjusting the pH value of the reactant. The formation mechanisms of nanosheet and microrod structures were then discussed based on the H+ cations adsorption abilities on different crystal faces. The Bi2MoO6 samples prepared at acidic condition showed 12 times higher photocatalytic activity than that prepared at basic condition under visible-light irradiation. The reason for the big difference in the photocatalytic activities for the Bi2MoO6 samples obtained at different pH values were systematically studied based on their shape, size and the variation of local structure. (C) 2010 Elsevier B.V. All rights reserved.
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