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	Oxygen vacancy-rich 2d/2d biocl-g-c3n4 ultrathin heterostructure nanosheets for enhanced visible-light-driven photocatalytic activity in environmental remediation
	Wang, Qiao1; Wang, Wei1; Zhong, Lingling1; Liu, Dongmei1; Cao, Xingzhong2; Cui, Fuyi1
刊名	Applied catalysis b-environmental
	2018
卷号	220页码:290-302
关键词	Oxygen vacancy 2d/2d heterostructure Ultrathin nanosheets Photocatalysis
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2017.08.049
通讯作者	Wang, wei(wangweirs@hit.edu.cn) ; Cui, fuyi(cuifuyi@hit.edu.cn)
英文摘要	Photocatalytic degradation has been unearthed as a promising strategy for environmental remediation, and the calling is endless for more efficient photocatalytic system. in this study, a novel oxygen vacancy-rich two-dimensional/two-dimensional (2d/2d) biocl-g-c3n4 ultrathin heterostructure nanosheet (cn-bc) is successfully prepared by a facile solvothermal method for degradation of non-dye organic contaminants. hrtem observes the formation of heterojunction, while esr and)cps unveil the distinct oxygen vacancy concentrations. density functional calculations reveal that the introduction of oxygen vacancies (ovs) brings a new defect level, resulting in the increased photoabsorption. under visible light irradiation, the ovs-rich optimum ratio of cn-bc (50cn-50bc) exhibits 95% removal efficiency of 4-chlorophenol within 2 h, which is about 12.5, 5.3 and 3.4 times as that of pure biocl, g-c3n4 and ovs-poor heterostructure, respectively. the photocatalytic mechanism of ovs-rich 50cn-50bc is also revealed, suggesting that the synergistic effect between 2d/2d heterojunction and oxygen vacancies greatly promotes visible-light photoabsorption and photoinduced carrier separation efficiency with a prolonged lifetime, which is confirmed by multiple optical and electrochemical analyses, including drs, steady-state photoluminescence spectra, electrochemical impedance spectroscopy, photocurrent response and time-resolved fluorescence spectra. this study could bring new opportunities for the rational design of highly efficient photocatalysts by combining 2d/2d heterojunctions with oxygen vacancies in environmental re mediation.
WOS关键词	GRAPHITIC CARBON NITRIDE ; SINGLE-CRYSTALLINE NANOSHEETS ; EXPOSED 001 FACETS ; EFFICIENT DEGRADATION ; BISMUTH OXYHALIDES ; HYDROGEN EVOLUTION ; NITROGEN-FIXATION ; BIOCL NANOSHEETS ; H-2 EVOLUTION ; WATER
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000412957200028
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177115
专题	高能物理研究所
通讯作者	Wang, Wei; Cui, Fuyi
作者单位	1.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Municipal & Environm Engn, Harbin 150090, Heilongjiang, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Mutidiscipline Res Div, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiao,Wang, Wei,Zhong, Lingling,et al. Oxygen vacancy-rich 2d/2d biocl-g-c3n4 ultrathin heterostructure nanosheets for enhanced visible-light-driven photocatalytic activity in environmental remediation[J]. Applied catalysis b-environmental,2018,220:290-302.
APA	Wang, Qiao,Wang, Wei,Zhong, Lingling,Liu, Dongmei,Cao, Xingzhong,&Cui, Fuyi.(2018).Oxygen vacancy-rich 2d/2d biocl-g-c3n4 ultrathin heterostructure nanosheets for enhanced visible-light-driven photocatalytic activity in environmental remediation.Applied catalysis b-environmental,220,290-302.
MLA	Wang, Qiao,et al."Oxygen vacancy-rich 2d/2d biocl-g-c3n4 ultrathin heterostructure nanosheets for enhanced visible-light-driven photocatalytic activity in environmental remediation".Applied catalysis b-environmental 220(2018):290-302.

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