Design of a photoelectrochemical device for the selective conversion of aqueous CO2 to CO: using mesoporous palladium–copper bimetallic cathode and hierarchical ZnO-based nanowire array photoanode

An overall PEC CO2 conversion was firstly reported by integrating both the newly designed metal cathode and the n-type photoanode with functional nanostructures. The maximum Faradaic efficiency (FE) for CO is ca. 75% at −1.2 V with incident photon-to-current conversion efficiency (IPCE) value of 16% at 340 nm.