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Recent advances in α-Fe2O3-based photocatalysts for CO2 conversion to solar fuels
Hongru Han,Tingting Han,Yi Luo,Muhammad Arslan Mushtaq,Yuefa Jia,Chunli Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
The conversion of CO2 into hydrocarbon-based fuels by utilizing solar energy has been considered as apromising solution for the exacerbated global environmental pollution and energy crisis. Among manycandidate materials, a-Fe2O3 has been extensively investigated to develop highly active photocatalysts. Despite its suitable energy band position, a-Fe2O3 suffers from the relative low reduction capacity andcharge separation ability, which are detrimental to the photocatalytic efficiency. Accordingly, heterojunctioncomposites have been adopted by many researchers to overcome these problems to achieveimproved CO2 photoreduction performance. In this review, the latest progress in highly active a-Fe2O3-based heterojunction photocatalyst composites utilizing type II, Z- and S-scheme charge transfermechanisms are summarized. In addition, the mechanisms of enhanced CO2 photoreduction efficiencyand interfacial charge transfer are also briefly discussed. Finally, the future development direction ofa-Fe2O3-based heterojunction photocatalysts for CO2 photoconversion is proposed.