期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 272, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cis.2019.101999
关键词
Carbon nitride; Layered double hydroxide; 2D/2D heterojunction; Photocatalysis; Visible light
资金
- National Natural Science Foundation of China [51378190, 51508177, 51521006, 51579095, 51709101]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
The utilization of solar energy with photocatalytic technology has been considered a good solution to alleviate environmental pollution and energy shortage. Constructing 2D/2D heterostructure photocatalysts with layered double hydroxide (LDH) and graphitic carbon nitride (g-C3N4) is an effective approach to attain high performance in solar photocatalysis. This paper provides a review of recent studies about 2D/2D LDH/g-C3N4 heterostructure photocatalysts. Main strategies for constructing the desired 2D/2D heterojunction are summarized. The planar structure of LDH and g-C3N4 offers a shorter transfer distance for charge carriers and reduces electron-hole recombination in the bulk phase. The face-to-face contact between the two materials can promote the charge transfer across the heterostructure interface, thus improving the electron-hole separation efficiency. The performance and mechanisms of LDH/g-C3N4 photocatalysts in hydrogen production, CO2 reduction, and organic pollutant degradation are analyzed and discussed. Incorporating reduced graphene oxide or Ag nanopartides into LDH/g-C3N4 heterojunction and fabricating calcined LDH/g-C3N4 composites are effective strategies to further facilitate charge transfer at the interface of LDH and g-C3N4 and improve the absorption capacity for visible light This review is expected to provide basic insights into the design of 2D/2D LDH/g-C3N4 heterojunctions and their applications in solar photocatalysis. (C) 2019 Elsevier B.V. All rights reserved.
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