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Hydrogen production with ultrahigh efficiency under visible light by graphene well-wrapped UiO-66-NH2 octahedrons

Abstract

Efficient catalytic system and surface modification are considered as two important routes for the enhancement of MOFs-based photocatalytic properties in water splitting. Herein, we report a significant improvement in water splitting efficiency with MOFs that we achieved in both ways. With the newly developed highly efficient TEOA-ErB system, H2 generation rate on UiO-66-NH2 octahedrons could amount to 21.2 mmolh-1g-1. Then based on the system, the interaction of UiO-66-NH2 surface with graphene was judicious controlled. The prepared graphene well wrapped UiO-66-NH2 octahedrons, in which every faces stay in contact with graphene, led to the highest H2 production efficiency of 41.4 mmolh-1g-1. These findings suggest that MOFs could potentially evolve into high efficient photocatalyst when incorporated in a proper system and further revealed that modifications on the surface of MOFs may result in a better inhibition electron-hole recombination in water splitting.

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Publication details

The article was received on 20 Jul 2017, accepted on 11 Sep 2017 and first published on 11 Sep 2017


Article type: Communication
DOI: 10.1039/C7TA06341E
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Hydrogen production with ultrahigh efficiency under visible light by graphene well-wrapped UiO-66-NH2 octahedrons

    Y. Wang, Y. Yu, R. Li, H. Liu, W. Zhang, L. Ling, W. Duan and B. Liu, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA06341E

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