In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination

IMR OpenIR

	In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination
	Hua, EB; Liu, G; Zhang, G; Xu, XX; Xu, XX (reprint author), Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, 1239 Siping Rd, Shanghai 200092, Peoples R China.; Zhang, G (reprint author), Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen Key Lab Water Resources Utilizat & Envir, Shenzhen 518055, Peoples R China.
	2018-03-28
发表期刊	DALTON TRANSACTIONS
ISSN	1477-9226
卷号	47 期号:12 页码:4360-4367
摘要	Separation of photo-generated electron-hole pairs plays a crucial role in determining the practical performance of semiconductor photocatalysts. Here we have successfully fabricated two dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures through an in situ urea degradation method. The so-formed nanosheet heterostructures demonstrate superior photocatalytic activities in H-2 evolution reactions over individual component. Further analysis using photoelectrochemical measurements suggests efficient charge separations at the interfaces of these heterostructures which contribute to a prolonged lifetime of photo-generated charges as well as the much enhanced photocatalytic activities. The in situ fabrication method adopted in this work ensures a firm anchorage of g-C3N4 onto Ba5Ta4O15 nanosheets and a face-to-face contact between these two semiconductors. Such a peculiar microstructure is critical to the high photocatalytic activity and apparently outweighs the conventional ones that involve only physical mixtures of two semiconductors and a point-to-point contact.; Separation of photo-generated electron-hole pairs plays a crucial role in determining the practical performance of semiconductor photocatalysts. Here we have successfully fabricated two dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures through an in situ urea degradation method. The so-formed nanosheet heterostructures demonstrate superior photocatalytic activities in H-2 evolution reactions over individual component. Further analysis using photoelectrochemical measurements suggests efficient charge separations at the interfaces of these heterostructures which contribute to a prolonged lifetime of photo-generated charges as well as the much enhanced photocatalytic activities. The in situ fabrication method adopted in this work ensures a firm anchorage of g-C3N4 onto Ba5Ta4O15 nanosheets and a face-to-face contact between these two semiconductors. Such a peculiar microstructure is critical to the high photocatalytic activity and apparently outweighs the conventional ones that involve only physical mixtures of two semiconductors and a point-to-point contact.
部门归属	[hua, erbing ; xu, xiaoxiang] tongji univ, sch chem sci & engn, shanghai key lab chem assessment & sustainabil, 1239 siping rd, shanghai 200092, peoples r china ; [liu, gang] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [zhang, guan] harbin inst technol, sch civil & environm engn, shenzhen key lab water resources utilizat & envir, shenzhen 518055, peoples r china
关键词	Graphitic Carbon Nitride G-c3n4 Nanosheets Water Oxidation Heterojunction Semiconductor Irradiation Nanocomposite Composites Ba5ta4o15 Nanoparticles
学科领域	Chemistry, Inorganic & Nuclear
资助者	Young Scientists Fund of the National Natural Science Foundation of China [21401142, 51708153]; Shanghai Science and Technology Commission [14DZ2261100]; Fundamental Research Funds for the Central Universities
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79419
专题	中国科学院金属研究所
通讯作者	Xu, XX (reprint author), Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, 1239 Siping Rd, Shanghai 200092, Peoples R China.; Zhang, G (reprint author), Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen Key Lab Water Resources Utilizat & Envir, Shenzhen 518055, Peoples R China.
推荐引用方式 GB/T 7714	Hua, EB,Liu, G,Zhang, G,et al. In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination[J]. DALTON TRANSACTIONS,2018,47(12):4360-4367.
APA	Hua, EB,Liu, G,Zhang, G,Xu, XX,Xu, XX ,&Zhang, G .(2018).In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination.DALTON TRANSACTIONS,47(12),4360-4367.
MLA	Hua, EB,et al."In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination".DALTON TRANSACTIONS 47.12(2018):4360-4367.