CoO/Co3O4 heterostructures with intimate contact promote photocatalytic CO2 reduction

Abstract

Here we delicately design CoO/Co₃O₄ heterostructures via a one-step solvothermal process for photocatalytic CO₂ reduction. The intimate-contact heterojunction, in synergy with oxygen vacancies, direct the spatial separation of photogenerated charges and provide active reaction platforms, thus endowing CoO/Co₃O₄ with enhanced CO₂-to-CO conversion performance.