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¹úÄÚ¹â´ß»¯Ñо¿Å£ÈËÖ®Ò»Àî²ÓԺʿµÄÓÖһƪ¶¥¼â×ÛÊö£¬»¶Ó´ó¼Ò¹²Í¬Ì½ÌÖ¹â´ß»¯ÁìÓòµÄÇ°ÑØ£¬´ó¼ÒÒ»ÆðŬÁ¦£¡£¡£¡£¡ This Account describes the important roles of cocatalysts in photocatalytic and PEC water splitting reactions. For semiconductor-based photocatalytic and PEC systems, we show that loading proper cocatalysts, especially dual cocatalysts for reduction and oxidation, on semiconductors (as light harvesters) can significantly enhance the activities of photocatalytic and PEC water splitting reactions. Loading oxidation and/or reduction cocatalysts on semiconductors can facilitate oxidation and reduction reactions by providing the active sites/reaction sites while suppressing the charge recombination and reverse reactions. In a PEC water splitting system, the water oxidation and reduction reactions occur at opposite electrodes, so cocatalysts loaded on the electrode materials mainly act as active sites/reaction sites spatially separated as natural photosynthesis does. In both cases, the nature of the loaded cocatalysts and their interaction with the semiconductor through the interface/junction are important.[ Last edited by 0809293 on 2013-3-29 at 11:13 ] |
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