Issue 23, 2018

Novel stable metal–organic framework photocatalyst for light-driven hydrogen production

Abstract

A novel MOF formulated as [Dy2(abtc)(H2O)2(OH)2]·2H2O (H4abtc = 3,3′,5,5′-azobenzene tetracarboxylic acid) was successfully synthesized, in which a dye-like ligand was integrated as a photosensitizer into MOFs by the reaction with Dy3+ ions (dye-based Dy-MOF). The ultra-stable dye-based Dy-MOF possesses a HOMO–LUMO gap of 2.17 eV as determined by UV-vis spectrum with absorbed edge at 570 nm. The dye-based Dy-MOF shows high catalytic activity for the UV-vis light driven hydrogen production, attributed to the porous structure and light harvesting from the dye-like ligand. The band-edge positions of the crystals of the dye-based Dy-MOF were studied via cyclic voltammetry (CV) to further verify the principle of photocatalytic hydrogen production. Furthermore, the exceptional thermal and pH stability of the dye-based Dy-MOF makes it possible to use them as photocatalysts in water. On using Pt cocatalyst, the UV-vis light photocatalytic hydrogen evolution rate of the dye-based Dy-MOF reaches 21.53 μmol h−1 g−1. In addition, the as-prepared dye-based Dy-MOF materials also exhibited good stability and recycling performance.

Graphical abstract: Novel stable metal–organic framework photocatalyst for light-driven hydrogen production

Supplementary files

Article information

Article type
Paper
Submitted
12 三月 2018
Accepted
05 五月 2018
First published
11 五月 2018

CrystEngComm, 2018,20, 3228-3233

Novel stable metal–organic framework photocatalyst for light-driven hydrogen production

Q. Yu, H. Dong, X. Zhang, Y. Zhu, J. Wang, F. Zhang and X. Sun, CrystEngComm, 2018, 20, 3228 DOI: 10.1039/C8CE00386F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements