2024 年 55 巻 3 号 p. 161-166
This review is concerned with metal complex catalysts, which are well documented as CO₂ reducing photocatalysts. In order for a metal complex catalyst to function as a photocatalyst in isolation, it must possess two essential characteristics. The first is the capacity to reduce CO₂; the second is the ability to form a stable excited state, which enables the utilization of absorbed light energy in the reaction. In recent years, research has focused on the development of systems that utilize separate complexes for catalytic and photosensitization reactions. Nevertheless, there have been reports of enhancements in catalytic efficacy even with metal complex catalysts alone. In this review, we will present a synthesis of past and recent reports on the extent of the improvements in performance using mononuclear metal complex photocatalysts.