Carbon dioxide reducing method, carbon dioxide reducing cell, and carbon dioxide reducing apparatus

摘要: The carbon dioxide reducing method using light includes: (a) preparing a cell including: cathode chamber that holds first electrolytic solution containing dioxide; an anode second solution; proton exchange membrane inserted between the and chambers; set inside to contact solution, having copper, gold, silver, indium, etc. on cathode; semiconductor layer constituted by nitride including AlxGa1-xN wherein 0≦x≦0.25, n-type GaN layer, pn junction structure electrically connected through p-type further no external power source; (b) irradiating with reduce cathode.