Bimetallic Bi-In interfaces on micropyramidal silicon for efficient solar-driven CO₂-to-formate conversion

Micropyramidal silicon decorated with bismuth-indium catalysts enables selective CO₂ photoelectroreduction to formate. Bimetallic interface engineering enhances charge transfer, improving photocurrent and formate production relative to monometallic systems. This simple strategy advances efficient solar-driven CO₂ conversion.