Enhanced photocatalytic performance of a Ti-based metal-organic framework for hydrogen production: Hybridization with ZnCr-LDH nanosheets

Novel hybrid composites of NH 2 -MIL-125(Ti) and ZnCr-layered double hydroxide nanosheets (ZnCr-LDH NSs) are developed for use as visible-light-active photocatalysts for hydrogen production based on water photolysis. The hybrid composites are obtained by growing NH 2 -MIL-125(Ti) in the presence of...

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Bibliographic Details
Published in:Scientific reports 2019-05, Vol.9 (1), p.7584-7584, Article 7584
Main Authors: Sohail, Muhammad, Kim, Hyunuk, Kim, Tae Woo
Format: Article
Language:English
Subjects:
140/146
639/301/299/890
639/301/299/921
639/4077/909/4101/4050
Humanities and Social Sciences
Hybridization
Hydrogen
Hydrogen production
Irradiation
multidisciplinary
Optical properties
Photocatalysis
Photolysis
Radiation
Science
Science (multidisciplinary)
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Summary:Novel hybrid composites of NH 2 -MIL-125(Ti) and ZnCr-layered double hydroxide nanosheets (ZnCr-LDH NSs) are developed for use as visible-light-active photocatalysts for hydrogen production based on water photolysis. The hybrid composites are obtained by growing NH 2 -MIL-125(Ti) in the presence of exfoliated ZnCr-LDH NSs using a solvothermal reaction. Hybridization of NH 2 -MIL-125(Ti) with exfoliated ZnCr-LDH NSs leads to significant effects on the morphology and optical properties of NH 2 -MIL-125(Ti). To find the optimum photocatalytic activity for hydrogen production by the hybrid composite photocatalysts, the content of ZnCr-LDH in this work is controlled. Compared to that of pristine NH 2 -MIL-125(Ti) and ZnCr-LDH, the hybrid composites exhibit an improved photocatalytic activity for hydrogen production under visible-light irradiation. In addition, the hybrid composite photocatalyst shows excellent photo-chemical stability. The improved photocatalytic activity is believed to benefit from the synergy of strong electronic coupling between NH 2 -MIL-125(Ti) and ZnCr-LDH NSs, expanded light absorption and band alignment to enhance the lifetime of photo-induced electrons and holes.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-44008-6