Abstract
Photocatalytic CO2 reduction has attracted widespread attention in recent years, due its potential to reduce anthropogenic CO2 emissions from fossil fuel combustion whilst also yielding fuels and valuable chemical feedstocks. Among the various semiconductor photocatalysts capable of driving CO2 reduction under direct sunlight, perovskite oxides are arguably the most promising due to their high catalytic activity, good stability, long charge diffusion lengths, and compositional flexibility that allows precise bandgap and band edge tuning. This review aims to showcase recent advances in the design of perovskite oxides and their derivatives for photocatalytic CO2 reduction, placing particular emphasis on structure modulation, defect engineering, and interface construction as rational approaches for enhancing solar‐driven CO2 conversion to CH4, CO, and other valuable oxygenates (CxHyOz).
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