In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination
文献类型：期刊论文
| 作者 | 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. |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2018-03-28 |
| 卷号 | 47期号:12页码:4360-4367 |
| 关键词 | Graphitic Carbon Nitride G-c3n4 Nanosheets Water Oxidation Heterojunction Semiconductor Irradiation Nanocomposite Composites Ba5ta4o15 Nanoparticles |
| ISSN号 | 1477-9226 |
| 英文摘要 | 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. |
| 学科主题 | Chemistry, Inorganic & Nuclear |
| 语种 | 英语 |
| 资助机构 | 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 |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79419]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。