Journal
SCIENTIFIC REPORTS
Volume 3, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep02080
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Funding
- Korea Ministry of Intelligence and Economy [10041232]
- Korea Ministry of Environment as Converging Technology Project [191-101-001]
- National Research Foundation of Korea
- Korean Government [2010-0001485]
- MOST
- POSTECH
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Unusually high photocatalytic activity of visible light-induced O-2 generation can be achieved by electrostatically-derived self-assembly between exfoliated Zn-Cr-LDH 2D nanosheets and POM 0D nanoclusters (W7O24-2 and V10O286-) acting as an electron acceptor. This self-assembly can provide a high flexibility in the control of the chemical composition and pore structure of the resulting LDH-based nanohybrids. The hybridization with POM nanoclusters remarkably enhances the photocatalytic activity of the pristine Zn-Cr-LDH, which is attributable to the formation of porous structure and depression of charge recombination. Of prime interest is that the excellent photocatalytic activity of the as-prepared Zn-Cr-LDH-POM nanohybrid for visible light-induced O-2 generation can be further enhanced by calcination at 200 degrees C, leading to the very high apparent quantum yield of similar to 75.2% at 420 nm. The present findings clearly demonstrate that the self-assembly of LDH-POM is fairly powerful in synthesizing novel LDH-based porous nanohybrid photocatalyst for visible light-induced O-2 generation.
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