Journal
MATERIALS LETTERS
Volume 124, Issue -, Pages 1-3Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.03.036
Keywords
Bi2O3/Bi2WO6; Heterojunction; Solution combustion; Nanocomposites; Powder technology; Photocatalysis
Funding
- National Natural Science Foundation of China [21076060, 21376061]
- Program for New Century Excellent Talents in University [NCET-12-0686]
- Scientific Research Foundation of Hebei Province Education Department [QN20131098]
- Doctoral Science Foundation of Hebei University of Science and Technology [QD 201240]
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A series of well-structured alpha-Bi2O3/Bi2WO6 heterojunctions was successfully prepared via an in situ one-step solution combustion method. HRTEM result indicated that there were many heterostructure interfaces formed in the as-obtained composites. The rhodamin B degradation results showed that the heterojunctions exhibited higher activities than those of pure alpha-Bi2O3 and pure Bi2WO6 under visible light irradiation. The enhanced performance was attributed to effective electrons transfer from alpha-Bi2O3 to Bi2WO6 and was also demonstrated by the photoluminescence test. Finally, a possible charge separation process mechanism over the alpha-Bi2O3/Bi2WO6 heterojunction was proposed. (C) 2014 Elsevier B.V. All rights reserved.
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