Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 780, Issue -, Pages 634-642Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.11.397
Keywords
Bi2S3/2D-Bi2WO6 hybrid materials; Photocatalytic; Optical and electrochemical measurements; Photocatalytic mechanism
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Funding
- National Natural Science Foundation of China [61204078, 21671059, 21877027]
- Program for Innovative Research Team (in Science and Technology) in University of Henan Province [13IRTSTHN026, 19 IRTSTHN023]
- Innovation Scientists and Technicians Troop Construction Projects of Henan Province [154200510009]
- Key Project of Science and Technology of Henan Province [17A150033]
- Henan Science and Technology Program [162300410174, 162300410204]
- Science and technology key project of Xinxiang [CXGG17001]
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Bi2S3/2D-Bi2WO6 composite materials which combined 2D-Bi2WO6 with Bi2S3 nanoparticles were prepared via ion exchange method. The mass ratio of Bi2S3 nanoparticle could be modulated by changing the quantity of thioacetamide (TAA). For Bi2S3/2D-Bi2WO6 composite materials, Bi2S3 nanoparticles dispersed on the surface of Bi2WO6 nanosheets. The photocatalytic activity was evaluated by photodegradation rhodamine B (RhB) under visible light. RhB was photodegraded nearly completely by BWS-2, while only 67% was photodegraded by Bi2WO6 nanosheet after 5 h' visible light irradiation. Based on the optical and electrochemical measurements, Bi2S3/2D-Bi2WO6 composite materials have prolonged carriers' lifetime, improved carriers' separation efficiency and decreased carriers' recombination efficiency. These results endow Bi2S3/2D-Bi2WO6 composite materials with high photocatalytic activities. (C) 2018 Elsevier B.V. All rights reserved.
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