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Issue 16, 2016
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Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

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Abstract

A polyoxometalate (POM), Pt nanoparticles (NPs) and a metal–organic framework (MOF, NH2-MIL-53) self-assemble into a hybrid material, PNPMOF, that displays synergistic activity for visible-light-driven catalytic hydrogen evolution (the PNPMOF is far more active than any of the three functional components alone). The POM has four targeted functions in this hybrid material: it reduces H2PtCl6 to Pt NPs, stabilizes the Pt NPs, induces a strong electrostatic association of the negatively charged Pt NPs with the protonated NH2-MIL-53 sites on the particle surfaces, and facilitates the catalytic reduction reaction itself. The NH2-MIL-53 in this work protects the light sensitive 2-aminoterephthalate groups in the pores from oxidation by the POMs, while the surface protonated NH2 units on the MOF particle surfaces strongly bind the negatively charged POM-stabilized Pt NPs.

Graphical abstract: Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

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Supplementary files

Article information


Submitted
01 Jan 2016
Accepted
06 Mar 2016
First published
08 Mar 2016

J. Mater. Chem. A, 2016,4, 5952-5957
Article type
Paper
Author version available

Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

W. Guo, H. Lv, Z. Chen, K. P. Sullivan, S. M. Lauinger, Y. Chi, J. M. Sumliner, T. Lian and C. L. Hill, J. Mater. Chem. A, 2016, 4, 5952
DOI: 10.1039/C6TA00011H

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