Issue 8, 2022

Structurally modified T-metal complexes and organic dyes as photosensitizers and earth-abundant T-metal catalysts for photo-driven hydrogen evolution in artificial photosynthetic systems

Abstract

The ever-persisting problem of energy crisis can be mitigated with renewable energy research leading to green energy sources, e.g., hydrogen. This work introduces explicitly photocatalytic hydrogen production employing 4d/5d-T-metal complexes and organic dyes as photosensitizers (PSs) and 3d-T-metal complexes (Co, Ni) with oxime, salen, porphyrin, and polypyridyl based ligands as catalysts. The review is focused on the judicious design of both PSs and catalysts to enhance the overall catalytic activity of artificial photosynthetic systems. Photoinduced electron transfer pathways involving the active sites of the catalysts have been made part of the discussion that elucidates how to design a robust and efficient photocatalytic hydrogen production system rationally. Reduction potentials of the catalysts and photosensitizers, change in the free energy values and DFT calculations have also been discussed to access the thermodynamic feasibility of the photo-induced electron transfer processes. Electrochemical studies, flash photolysis investigations, and various spectroscopic and microscopic techniques, e.g., photoluminescence, transient absorption, and emission, scanning/transmission electron microscopy studies, have been included in the discussion to validate the proposed catalytic mechanisms.

Graphical abstract: Structurally modified T-metal complexes and organic dyes as photosensitizers and earth-abundant T-metal catalysts for photo-driven hydrogen evolution in artificial photosynthetic systems

Article information

Article type
Review Article
Submitted
08 фев. 2022
Accepted
02 мар. 2022
First published
10 мар. 2022

Sustainable Energy Fuels, 2022,6, 1891-1922

Structurally modified T-metal complexes and organic dyes as photosensitizers and earth-abundant T-metal catalysts for photo-driven hydrogen evolution in artificial photosynthetic systems

R. Gupta, P. Sahni, S. Sharma, A. Roy and A. K. Pal, Sustainable Energy Fuels, 2022, 6, 1891 DOI: 10.1039/D2SE00177B

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