期刊
APPLIED SURFACE SCIENCE
卷 444, 期 -, 页码 75-86出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.03.021
关键词
Tiny Bi2S3 nanoparticles; Carbon nitride; 0D/2D heterojunction; Synergistic effect
类别
资金
- National Natural Science Foundation of China [51508264, 21676129, 21506079, 21407065]
- National Key RD Program [2016YFC0502801]
Novel well-dispersed tiny Bi2S3 nanoparticles (NPs) with an average sizes of approximately 16.2 nm were used to decorate layered g-C3N4 nanosheets (NSs), with the purpose of constructing highly efficient 0D/2D heterojunction photocatalyst by a simple hydrothermal method in one step. The fabricated Bi2S3/g-C3N4 heterostructures exhibited superior visible-light-driven photocatalytic activity toward methyl orange (MO) degradation in contrast to that of individual Bi2S3 and g-C3N4, which could be mainly ascribed to the synergistic effect of the tiny size effect of 0D Bi2S3 NPs and 2D g-C3N4 NSs, the matched energy level positions, and the abundant coupling heterointerfaces between two moieties. More importantly, the photodegradation of methylene blue (MB), rhodamine B (RhB) and colorless tetracycline (TC), ciprofloxacin (CIP) further revealed the broad-spectrum photodegradation capacities of the heterojunction materials. The possible photoinduced charge transfer and pollutant degradation process over Bi2S3/g-C3N4 heterojunctions under visible-light irradiation were proposed. This work may provide a platform for constructing new visible light 0D/2D intimate contact heterostructures with stable and efficient photocatalytic performance. (C) 2018 Elsevier B.V. All rights reserved.
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