Enhanced photocatalytic hydrogen production from an MCM-41-immobilized photosensitizer—[Fe-Fe] hydrogenase mimic dyad
Enhanced photocatalytic hydrogen production from an MCM-41-immobilized photosensitizer—[Fe-Fe] hydrogenase mimic dyad
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DOI：
10.1039/c3pp50446h
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发表时间：
2014-10
影响因子：
3.1
通讯作者：
Wen Wang;Tianjun Yu;Yi Zeng;Jinping Chen;Guoqiang Yang;Yi Li
中科院分区：
文献类型：
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作者：
Wen Wang;Tianjun Yu;Yi Zeng;Jinping Chen;Guoqiang Yang;Yi Li
通过点击反应构建了由两个双(2-苯基吡啶)(2，2‘-联吡啶)Ir(III)发色团(Ps)和一个二铁氢酶模拟物(Hy)组成的共价键联型光敏剂-催化中心二联体Ps-Hy。将PS-Hy引入K~(2+)交换分子筛MCM-41中，形成了复合材料(PS-Hy@MCM-41)，并成功地将其应用于光化学法制氢。在不加MCM-41的情况下，Ps-Hy@MCM-41的催化活性是Ps-Hy的~3倍。在MCM-41分子筛中引入Ps-Hy稳定了催化剂，从而提高了光催化性能。本研究为利用介孔分子筛提高人工光合作用系统的催化效率提供了一种潜在的策略。
A covalently linked photosensitizer-catalytic center dyad Ps-Hy, consisting of two bis(2-phenylpyridine) (2,2’-bipyridine)iridium( iii ) chromophores (Ps) and a diiron hydrogenase mimic (Hy) was constructed by using click reaction. Ps-Hy was incorporated into K^+-exchanged molecular sieve MCM-41 to form a composite (Ps-Hy@MCM-41), which has been successfully applied to the photochemical production of hydrogen. The catalytic activity of Ps-Hy@MCM-41 is ~3-fold higher as compared with that of Ps-Hy in the absence of MCM-41. The incorporation of Ps-Hy into MCM-41 stabilizes the catalyst, and consequently, advances the photocatalysis. The present study provides a potential strategy for improving catalytic efficiency of artificial photosynthesis systems using mesoporous molecular sieves.