Fast and Selective Photoreduction of CO₂ to CO Catalyzed by a Complex of Carbon Monoxide Dehydrogenase, TiO₂, and Ag Nanoclusters.

ABSTRACT: Selective, visible-light-driven conversion of CO₂ to CO with a turnover frequency of 20 s^-1 under visible light irradiation at 25 °C is catalyzed by an aqueous colloidal system comprising a pseudoternary complex formed among carbon monoxide dehydrogenase (CODH), silver nanoclusters stabilized by polymethacrylic acid (AgNCs-PMAA), and TiO₂ nanoparticles. The photocatalytic assembly, which is stable over several hours and for at least 250000 turnovers of the enzyme's active site, was investigated by separate electrochemical (dark) and fluorescence measurements to establish specific connectivities among the components. The data show (a) that a coating of AgNCs-PMAA on TiO₂ greatly enhances its ability as an electrode for CODH- based electrocatalysis

SUBMITTER: Zhang L 

PROVIDER: S-EPMC6707747 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature