Issue 3, 2024

A covalent organic framework based on BOPHY/TiO2 hybrid photocatalysts for solar driven hydrogen production

Abstract

The conversion of sunlight into chemical energy to produce solar hydrogen opens the door to one promising solution towards a sustainable alternative in the current energy crisis. Herein, we describe the successful synthesis of the first COF based on BOPHY dye (IEC-2) ever reported in the literature. Its β-ketoenamine linkage confers outstanding chemical stability for light-driven applications. The hybrid photocatalyst based on IEC-2 and TiO2 (10 wt% of COF loading) was studied for solar hydrogen evolution at both the lab-scale, and semi-pilot plant scale under natural sunlight. IEC-2@T-10 achieved a hydrogen production of 180.9 μmol g−1 under 6 h solar illumination, which increased by 36% with respect to that of benchmark TiO2. The high performance of IEC-2@T-10 results in a greater photonic efficiency than that of TiO2 (0.12% and 0.08%, respectively), highlighting the robustness of the BOPHY COF for light-mediated reactions.

Graphical abstract: A covalent organic framework based on BOPHY/TiO2 hybrid photocatalysts for solar driven hydrogen production

Supplementary files

Article information

Article type
Paper
Submitted
17 okt 2023
Accepted
17 nov 2023
First published
27 nov 2023

J. Mater. Chem. A, 2024,12, 1476-1487

A covalent organic framework based on BOPHY/TiO2 hybrid photocatalysts for solar driven hydrogen production

T. Mazuelo, T. Naranjo, M. Gomez-Mendoza, A. Herrero Pizarro, L. Collado, M. Barawi, F. Gándara, M. Liras and V. A. de la Peña O'Shea, J. Mater. Chem. A, 2024, 12, 1476 DOI: 10.1039/D3TA06314C

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