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Updated: Sep 17, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
Covalent Organic Frameworks as Photocatalysts for Sustainable Solar-to-Hydrogen Peroxide Conversion
Xunliang Hu1,2, Bien Tan2
1Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology, Jianghan University, Wuhan, 430056, China.
Abstract:
Hydrogen peroxide (H2O2) plays a pivotal role in energy and environmental applications, but its industrial synthesis remains hampered by high energy consumption, environmental concerns, and safety risks. Artificial photosynthesis offers a sustainable alternative by leveraging solar energy to catalyze H2O2 production from oxygen and water. Covalent organic frameworks (COFs) have emerged as promising photocatalysts due to their well-defined structures and customizable active sites, enabling efficient solar-to-chemical conversion (SCC). This review comprehensively explores recent progress in COF-mediated photocatalytic H2O2 synthesis. It begins with an overview of photocatalytic principles, followed by a detailed analysis of reaction mechanisms and performance metrics for H2O2 generation. Emphasis is placed on tailored COF design strategies-such as electronic structure optimization and redox-active site engineering-to improve catalytic efficiency. Finally, we identify key challenges hindering the development of high-performance COFs photocatalysts tailored for sustainable H₂O₂ synthesis.
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