Korea-Taiwan Joint Symposium: Recent Advances in Polymer Science and Engineering: From Fundamentals to Applications (English)
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Semiconducting Polymer Photocatalysts for Solar-driven Hydrogen Evolution
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By mimicking natural photosynthesis, artificial photosynthesis using polymer photocatalysts for the visible-light-driven generation of hydrogen through the splitting of water is an almost ideal process for the conversion of abundant solar energy into useable fuel in an environmentally friendly and high-energy-density manner. Photocatalytic hydrogen evolution through solar water splitting has received considerable attention due to an inexhaustible supply of solar energy. Extensive efforts have been made to prepare highly efficient photocatalytic materials. Appreciable amounts of organic semiconductors as photocatalysts have been specifically targeted to achieve outstanding photocatalytic activity because they have numerous attractive properties, including low-temperature processing, low-cost production, easily adjustable molecular structure, and tunable bandgaps that differentiate them from their inorganic counterparts. Since graphitic carbon nitride was successfully applied to photocatalytic hydrogen evolution systems in 2009, several types of research using polymeric photocatalysts, such as linear conjugated polymers, conjugated microporous polymers, polymer dots, covalent triazine frameworks, and covalent organic frameworks for hydrogen evolution have been gradually published. In a search for efficient photocatalysts that mimic such a function, here we will describe several series of newly designed polymers and polymer dots as photocatalysts for solar-driven hydrogen evolution from water. How to address the interface barrier between the polymer, water, and reagent will be included, to give a clear strategy for understanding the recent advances in this field.