Hybrid Catalyst for Light-Driven Green Molecular Transformations
Hybrid Catalyst for Light-Driven Green Molecular Transformations
复制标题
用于光驱动绿色分子转化的混合催化剂
DOI：
10.1002/cplu.201600303
复制
发表时间：
2017
期刊：
影响因子：
3.4
通讯作者：
Y. Hisaeda
中科院分区：
文献类型：
--
作者：
H. Shimakoshi;Y. Hisaeda
综述了由光敏剂和金属络合物组成的杂化催化剂，特别是维生素 B12衍生物的研究进展。由于两组分之间的协同作用，半导体-金属络合物复合材料是分子转化的有效光催化剂。用于与二氧化钛杂交的B12络合物的设计简单明了--从天然的B12衍生的具有七个羧基的椰子酸稳定地固定在二氧化钛上。通过使用复合催化剂作为B12依赖酶的模拟物，有机卤化物污染物的脱氯和自由基介导的异构化等光驱动反应在催化下进行。除了仿酶反应外，该复合催化剂还开发了仿生反应。B12-TiO2杂化催化剂用于紫外光照射下的析氢和烯烃还原反应，钴-氢络合物(Co-H络合物)被认为是反应的中间产物。本文介绍了杂化催化剂设计的多学科概念。
This Minireview is focused on the development of hybrid catalysts composed of photosensitizers and a metal complex, especially vitamin B12derivatives. The semiconductor–metal complex composites are effective photocatalysts for molecular transformations due to the synergistic effect between the two components. The design of a B12complex for the hybridization with TiO2was simple and straightforward—cobyrinic acid, having seven carboxylic groups derived from naturally occurring B12is stably immobilized on the TiO2. By using the hybrid catalysts as mimics of B12‐dependent enzymes, light‐driven reactions such as the dechlorination of organic halide pollutants, and radical‐mediated isomerization proceeded catalytically. In addition to the enzyme‐mimicking reactions, bioinspired reactions were also developed with the hybrid catalyst. The B12–TiO2hybrid catalyst was used for hydrogen evolution and alkene reduction by UV light irradiation, and the cobalt–hydrogen complex (Co–H complex) was considered to be a putative intermediate of the reactions. The multidisciplinary concept for the design of a hybrid catalyst is described in this Minireview.