Abstract
CO2 emissions from the consumption of fossil fuels are continuously increasing, thus impacting Earth’s climate. In this context, intensive research efforts are being dedicated to develop materials that can effectively reduce CO2 levels in the atmosphere and convert CO2 into value-added chemicals and fuels, thus contributing to sustainable energy and meeting the increase in energy demand. The development of clean energy by conversion technologies is of high priority to circumvent these challenges. Among the various methods that include photoelectrochemical, high-temperature conversion, electrocatalytic, biocatalytic, and organocatalytic reactions, photocatalytic CO2 reduction has received great attention because of its potential to efficiently reduce the level of CO2 in the atmosphere by converting it into fuels and value-added chemicals. Among the reported CO2 conversion catalysts, perovskite oxides catalyze redox reactions and exhibit high catalytic activity, stability, long charge diffusion lengths, compositional flexibility, and tunable band gap and band edge. This review focuses on recent advances and future prospects in the design and performance of perovskites for CO2 conversion, particularly emphasizing on the structure of the catalysts, defect engineering and interface tuning at the nanoscale, and conversion technologies and rational approaches for enhancing CO2 transformation to value-added chemicals and chemical feedstocks.
Highlights
In the past decades, the increasing concentration of CO2 in the atmosphere is attributed mainly to the utilization of fossil fuels and it has negatively impacted the climate [1,2,3,4,5,6,7,8]
Studies have shown that the ideal perovskite-based solar conversion systems should have fast kinetics, and the “right” thermodynamics to yield in high efficiency during water and CO2 conversion, while maintaining their mechanical stability
The anthropogenic CO2 emissions in the atmosphere due to the consumption of fossil fuels has been a critical concern associated with global warming
Summary
The increasing concentration of CO2 in the atmosphere is attributed mainly to the utilization of fossil fuels and it has negatively impacted the climate [1,2,3,4,5,6,7,8]. Pretreatment at different temperatures has been found to affect reactivity and selectivity, while the overall process is often complicated and challenging to control, making it difficult to convert CO2 to the desirable products with high efficiency To this extent, the development of CO2 conversion technologies at low temperatures involving novel catalysts, such as perovskite-based ones, becomes more attractive than classical methods, due to the inherent advantages that these materials can offer, which include sustainable catalytic efficiency, tunable selectivity, potential for scaling up to industrial applications, and the ability to improve conversion efficiency and selectivity via optimizing the catalyst morphology and structure [19,20,21,22,23,24,25,26,27,28,29]
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