Photoelectrochemical water splitting by triazine based covalent organic framework

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Pradhan, A. and Addicoat, M.A. ORCID: 0000-0002-5406-7927, 2022. Photoelectrochemical water splitting by triazine based covalent organic framework. Sustainable Energy and Fuels. ISSN 2398-4902

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Official URL: https://doi.org/10.1039/d2se00827k

Abstract

Photo electrochemical (PEC) water splitting under visible light irradiation is a very promising path for green and sustainable hydrogen production. PEC process has gained attracted enormous research interest due to the potential of direct conversion of solar power into chemical fuel. Herein, we present a covalent organic framework (COF) which shows promise as an ideal photoabsorber due to the combination of efficient light harvesting sites with a suitable band gap and catalytic sites for HER. Under solvothermal condition a Schiff base type condensation between 1,3,5-tris (4-formylbiphenyl) benzene (TFBB), 2, 4, 6-Tris(4-aminophenyl)-1, 3, 5-triazine (TAT) and 2, 4, 6-Tris(4-aminophenyl)-benzene (TAB) yields a crystalline, 2-D covalent organic frameworks TFBB-TAT and TFBB-TAB COF respectively. The as prepared triazine containing TFBB-TAT COF shows better photo electrochemical (PEC) water splitting compared to non-triazine based TFBB-TAB COF. This work enriches the structural variety of COFs and plays an important role in PEC water splitting, also illustrating the intriguing electrochemical behaviour of this class of materials.

Item Type:

Journal article

Publication Title:

Sustainable Energy and Fuels

Creators:

Pradhan, A. and Addicoat, M.A.

Publisher:

Royal Society of Chemistry (RSC)

Date:

1 August 2022

ISSN:

2398-4902