NDLI: Two-dimensional ultrathin BiOCl nanosheet/graphene heterojunction with enhanced photocatalytic activity

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Two-dimensional ultrathin BiOCl nanosheet/graphene heterojunction with enhanced photocatalytic activity

Content Provider	Scilit
Author	Guan, Meili Zhang, Xuan Bao, Jian Gong, Xuezhong
Copyright Year	2019
Description	Journal: Nanotechnology Two-dimensional (2D) semiconductors and their heterostructures promise great potential in solar-driven photocatalysis owing to their unique properties that results from structural planar confinement. Herein, we fabricate the BiOCl nanosheet/graphene hybrid with 2D heterojunction through a hydrothermal and physical mixing two-step process. Studies on the heterostructure reveal the face-to-face intimate interfacial contact between the BiOCl nanosheet and graphene through Van der Waals interaction rather than chemical bonding. Compare with BiOCl bulk/graphene hybrid, the BiOCl nanosheet/graphene hybrid showed superior photocatalytic activity towards dye decolorization and decomposition, features a remarkable enhancement of 15-fold higher reaction rate. A series of characterizations reveal that the co-effect of the surface defect of BiOCl nanosheet and graphene planar structure contribute to an extended light absorption range, better electrical conductivity, and larger dye adsorption capacity. Furthermore, the unique face-to-face interface guarantee intimate contact between graphene and BiOCl promoted the fast and continuous consumption of photogenerated electrons, thereby effectively facilitating the separation of electron-hole pairs. This work underscores the key role of face-to-face heterojunction for the interfacial charge transfer process.
Related Links	https://iopscience.iop.org/article/10.1088/1361-6528/ab5535/pdf
ISSN	09574484
e-ISSN	13616528
DOI	10.1088/1361-6528/ab5535
Journal	Nanotechnology
Issue Number	8
Volume Number	31
Language	English
Publisher	IOP Publishing
Publisher Date	2019-11-07
Access Restriction	Open
Subject Keyword	Journal: Nanotechnology Photocatalytic Activity
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering

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