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Issue 83, 2016
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Shape-selective synthesis of Bi2WO6 hierarchical structures and their morphology-dependent photocatalytic activities

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Abstract

Various morphologies of Bi2WO6 including packed nanoplates, three dimensional (3D) hierarchical flower-like and clew-like microspheres were successfully synthesized through a simple hydrothermal route using L-lysine as a structure-directing agent. It was found that the morphological modulation of the as-prepared products could be easily realized by adjusting the solution pH values of the precursors. On the basis of a series of time-dependent experiments, the possible mechanisms for the formation of three different structures were proposed. The photocatalytic activities of the different morphologies of Bi2WO6 were evaluated by photodegradation of Rhodamine B (RhB) solution under visible light irradiation (λ > 400 nm). In comparison with clew-like and plate-like Bi2WO6 structures, Bi2WO6 with a hierarchical flower-like architecture exhibited the highest visible-light-photocatalytic activity. The enhanced photocatalytic activity could be mainly ascribed to the unique structural features of flower-like microspheres with hierarchical architectures.

Graphical abstract: Shape-selective synthesis of Bi2WO6 hierarchical structures and their morphology-dependent photocatalytic activities

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Publication details

The article was received on 04 Jun 2016, accepted on 17 Aug 2016 and first published on 17 Aug 2016


Article type: Paper
DOI: 10.1039/C6RA14493D
RSC Adv., 2016,6, 80226-80233

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    Shape-selective synthesis of Bi2WO6 hierarchical structures and their morphology-dependent photocatalytic activities

    H. Lv, Y. Liu, J. Guang, Z. Ding and J. Wang, RSC Adv., 2016, 6, 80226
    DOI: 10.1039/C6RA14493D

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