Boosting NIR-driven photocatalytic water splitting by constructing 2D/3D epitaxial heterostructures



Publication Details

Wang, L., Cui, D., Ren, L., Zhou, J., Wang, F., Casillas, G., Xu, X., Peleckis, G., Hao, W., Ye, J., Dou, S. Xue., Jin, D. & Du, Y. (2019). Boosting NIR-driven photocatalytic water splitting by constructing 2D/3D epitaxial heterostructures. Journal of Materials Chemistry A, 7 (22), 13629-13634.


Heterostructures, which can possess advantages of materials with different properties, have attracted enormous attention in various research fields including solar cells, photocatalysts, and optical electronic devices. In this work, a 2D/3D atomic epitaxial heterostructure with ultrathin BiOCl nanosheets and YF3:Yb, Tm octahedral crystals was fabricated via the halogen atom exchange method in the solution phase. The epitaxial heterointerface can facilitate energy transfer between BiOCl and YF3:Yb, Tm and suppress the energy quenching induced by grain boundaries. By carrying out single-particle confocal characterization, the energy upconverted by YF3:Yb, Tm is quantitatively confirmed to be transferred to ultrathin BiOCl nanosheets. As a result, YF3:Yb, Tm@BiOCl displays outstanding NIR-driven water splitting and waste-water cleaning properties. This study paves the way to fabricate 2D/3D epitaxial heterostructures, which helps to broaden the application of typical 2D materials.

Grant Number

ARC/FT180100585, ARC/LE120100104, ARC/DP160102627

Grant Number

ARC/ LE100100081, ARC/DP170101467, ARC/LE110100099

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