Integrable utilization of intermittent sunlight and residual heat for on-demand CO₂ conversion with water.

ABSTRACT: Abundant residual heat from industrial emissions may provide energy resource for CO₂ conversion, which relies on H₂ gas and cannot be accomplished at low temperatures. Here, we report an approach to store electrons and hydrogen atoms in catalysts using sunlight and water, which can be released for CO₂ reduction in dark at relatively low temperatures (150-300 °C), enabling on-demand CO₂ conversion. As a proof of concept, a model catalyst is developed by loading single Cu sites on hexagonal tungsten trioxide (Cu/WO₃). Under light illumination, hydrogen atoms are generated through photocatalytic water splitting and stored together with electrons in Cu/WO₃, forming a metastable intermediate (Cu/H_xWO₃). Subs

SUBMITTER: Shi X 

PROVIDER: S-EPMC11584809 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature