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Chem. Soc. Rev.最新综述：用于半导体基光催化水分解的高丰度共催化剂
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最新一期的Chem. Soc. Rev.刊发了题为Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting的最新综述介绍了用于半导体基光催化水分解的高丰度共催化剂，共催化剂可以有效的降低光解水所需的过电位，从而提高材料的催化性能。文章页，引文篇。 Photocatalytic water splitting represents a promising strategy for clean, low-cost, and environmental-friendly production of H2 by utilizing solar energy. There are three crucial steps for the photocatalytic water splitting reaction: solar light harvesting, charge separation and transportation, and the catalytic H2 and O2 evolution reactions. While significant achievement has been made in optimizing the first two steps in the photocatalytic process, much less efforts have been put into improving the efficiency of the third step, which demands the utilization of cocatalysts. To date, cocatalysts based on rare and expensive noble metals are still required for achieving reasonable activity in most semiconductor-based photocatalytic systems, which seriously restricts their large-scale application. Therefore, seeking cheap, earth-abundant and high-performance cocatalysts is indispensable to achieve cost-effective and highly efficient photocatalytic water splitting. This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H2- and O2-production half reactions as well as overall water splitting. The roles and functional mechanism of the cocatalysts are discussed in detail. Finally, this review is concluded with a summary, and remarks on some challenges and perspectives in this emerging area of research. /  GA.gif |
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2014-01-16 20:51:30, 4.06 M
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