期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 394, 期 -, 页码 69-77出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.12.002
关键词
Flower-like; Composite; Microwave; Photocatalytic activity
资金
- National Basic Research Program of China [2013CB922102]
- Natural Science Grant of China [21021062]
- US National Science Foundation [CHE-1012173]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1012173] Funding Source: National Science Foundation
Flower-like Bi2WO6 and Bi2O3-Bi2WO6 composite microstructures have been synthesized via a facile and rapid microwave-assisted hydrothermal method through controlling the experimental parameters. The phases and morphologies of the products are characterized by powder X-ray diffraction (XRD), energy dispersion X-ray analysis (EDX), high resolution transmission electron microscopy (HRTEM), and scanning electron microscopy (SEM). Photocatalytic experiments indicate that such Bi2O3-Bi2WO6 composite possesses higher photocatalytic activity for RhB degradation under visible-light irradiation in comparison with pure Bi2O3 and Bi2WO6. On the basis of the calculated energy band positions, the enhanced photocatalytic activity is attributed to the effective separation of electron-hole pairs between the two semiconductors. The present study provides a new strategy to design composite materials with enhanced photocatalytic activity. (C) 2012 Elsevier Inc. All rights reserved.
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