PHOTOELECTROCHEMICAL REDUCTION OF CO2 CATALYZED BY PYRTOINIUM ON P-TYPE MOS2 ELECTRODE

摘要

CO2 is potentially a nearly inexhaustible feedstock for carbon based chemicals.Storing energy can be achieved by reducing carbon dioxide via electron and proton addition, which is energetically uphill. In order to avoid producing net carbon dioxide, solar energy is considered an ideal source to drive the reduction. Various semiconductors have been investigated as photoelectrodes for CO2 reduction, with CO or formate being the products typically observed. In 2008, the Bocarsly group reported an efficient CO2 photoelectrochemical reduction system catalyzed by pyridinium, in which a p-GaP electrode reduced CO2 selectively to methanol with a nearly 100% faradaic yield.