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题名: In situ fabrication of two-dimensional g-C3N4/Ba5Ta4O15 nanosheet heterostructures with efficient charge separations and photocatalytic hydrogen evolution under visible light illumination
作者: Hua, EB;  Liu, G;  Zhang, G;  Xu, XX
发表日期: 2018-3-28
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.
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Recommended Citation:
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.

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