[1C14-18] Hydrogen production/energy carriers/CCU(4)

[1C14] Development of a visible-light driven CO₂ reduction system by combining a biocatalyst and CuInS₂ photocathode

○Takumi Toyodome¹, Yutaka Amao^1,2, Masanobu Higashi² (1. Graduate School of Science, Osaka City University, 2. Research Center for Artificial Photosynthesis, Osaka City University)

One of the effective CO₂ utilizations is to reduce CO₂ to a high energy substance (such as HCOOH, CO) by using semiconductor photoelectrodes. However, it is desired to develop CO₂ reduction a system with high selectivity because the water reduction proceeds preferentially rather than the CO₂ reduction in an aqueous solution. In this study, we attempted to construct a visible-light driven CO₂ reduction system by combining a biocatalyst (formate dehydrogenase from Candida boidinii; FDH) capable of selective CO₂ reduction to formate and CuInS₂ photocathode.

Keywords:CO2 reduction, CuInS2 photocathode, biocatalyst