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Type: Journal article
Title: Metal-free 2D/2D phosphorene/g-C₃N₄ van der Waals heterojunction for highly enhanced visible-light photocatalytic H₂ production
Other Titles: Metal-free 2D/2D phosphorene/g-C(3)N(4) van der Waals heterojunction for highly enhanced visible-light photocatalytic H(2) production
Author: Ran, J.
Guo, W.
Wang, H.
Zhu, B.
Yu, J.
Qiao, S.
Citation: Advanced Materials, 2018; 30(25):1800128-1-1800128-6
Publisher: Wiley
Issue Date: 2018
ISSN: 0935-9648
Statement of
Jingrun Ran, Weiwei Guo, Hailong Wang, Bicheng Zhu, Jiaguo Yu, and Shi-Zhang Qiao
Abstract: The generation of green hydrogen (H2 ) energy using sunlight is of great significance to solve the worldwide energy and environmental issues. Particularly, photocatalytic H2 production is a highly promising strategy for solar-to-H2 conversion. Recently, various heterostructured photocatalysts with high efficiency and good stability have been fabricated. Among them, 2D/2D van der Waals (VDW) heterojunctions have received tremendous attention, since this architecture can promote the interfacial charge separation and transfer and provide massive reactive centers. On the other hand, currently, most photocatalysts are composed of metal elements with high cost, limited reserves, and hazardous environmental impact. Hence, the development of metal-free photocatalysts is desirable. Here, a novel 2D/2D VDW heterostructure of metal-free phosphorene/graphitic carbon nitride (g-C3 N4 ) is fabricated. The phosphorene/g-C3 N4 nanocomposite shows an enhanced visible-light photocatalytic H2 production activity of 571 µmol h-1 g-1 in 18 v% lactic acid aqueous solution. This improved performance arises from the intimate electronic coupling at the 2D/2D interface, corroborated by the advanced characterizations techniques, e.g., synchrotron-based X-ray absorption near-edge structure, and theoretical calculations. This work not only reports a new metal-free phosphorene/g-C3 N4 photocatalyst but also sheds lights on the design and fabrication of 2D/2D VDW heterojunction for applications in catalysis, electronics, and optoelectronics.
Keywords: Hydrogen production; metal-free; phosphorene; photocatalytic; van der Waals heterojunction
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
RMID: 0030086669
DOI: 10.1002/adma.201800128
Grant ID:
Appears in Collections:Chemical Engineering publications

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