Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities

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	Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities
	P. Niu; L. L. Zhang; G. Liu; H. M. Cheng
	2012
发表期刊	Advanced Functional Materials
ISSN	1616-301X
卷号	22 期号:22 页码:4763-4770
摘要	Graphitic (g)-C3N4 with a layered structure has the potential of forming graphene-like nanosheets with unusual physicochemical properties due to weak van der Waals forces between layers. Herein is shown that g-C3N4 nanosheets with a thickness of around 2 nm can be easily obtained by a simple top-down strategy, namely, thermal oxidation etching of bulk g-C3N4 in air. Compared to the bulk g-C3N4, the highly anisotropic 2D-nanosheets possess a high specific surface area of 306 m2 g-1, a larger bandgap (by 0.2 eV), improved electron transport ability along the in-plane direction, and increased lifetime of photoexcited charge carriers because of the quantum confinement effect. As a consequence, the photocatalytic activities of g-C3N4 nanosheets have been remarkably improved in terms of OH radical generation and photocatalytic hydrogen evolution.
部门归属	[niu, ping; zhang, lili; liu, gang; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;niu, p (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;gangliu@imr.ac.cn
关键词	G-c3n4 Nanosheets Thermal Oxidation Etching Photocatalysis Visible-light Irradiation Metal-free Catalysts Electronic-structure Hydrogen-production Semiconductor Water Conversion Polymer Oxide Crystallinity
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60176
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Niu,L. L. Zhang,G. Liu,et al. Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities[J]. Advanced Functional Materials,2012,22(22):4763-4770.
APA	P. Niu,L. L. Zhang,G. Liu,&H. M. Cheng.(2012).Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities.Advanced Functional Materials,22(22),4763-4770.
MLA	P. Niu,et al."Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities".Advanced Functional Materials 22.22(2012):4763-4770.