Photoelectrochemical hybrid cell for unbiased CO2 reduction coupled to alcohol oxidation

The reduction of CO2 to renewable fuels must be coupled a sustainable oxidation process devise viable device that produces solar fuels. In photoelectrochemical cells, water O2 is the predominant reaction and typically requires pair light absorbers or an applied bias voltage when reduction. Here, we report bias-free for simultaneous formate alcohol aldehyde in aqueous conditions. photoanode constructed by co-immobilization diketopyrrolopyrrole-based chromophore nitroxyl-based catalyst on mesoporous TiO2 scaffold, which provides precious-metal-free dye-sensitized photoanode. wired biohybrid cathode consists enzyme dehydrogenase integrated into indium tin oxide electrode. cell delivers sustained photocurrents up 30 µA cm−2 under visible-light irradiation, results production. Our show absence external bias, single absorber cells can used parallel fuel production chemical synthesis from substrates. (PEC) O2, reduction, voltage. Now, PEC with sunlight drives give formate, organic substrate