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Multistep Regulation of Ionic Liquids in Photocatalytic CO2 Reduction: From Capture, Preactivation, Carrier to
Xiaoyue Zhang1, Hui Chen1,2, Dong Liang3
1State Key Laboratory of Advanced Refractories, Wuhan University of Science & Technology, Wuhan, P. R. China.
Abstract:
Ionic liquids (ILs) have attracted extensive attention in the field of photocatalytic CO2 reduction due to their unique advantages in the synthesis of photocatalytic materials and the regulation of interfacial reactions. However, the key regulatory mechanisms of photogenerated carrier behavior and reaction pathways in dynamic photocatalytic reactions are not yet systematically summarized. This article focuses on the multiple roles of ILs in photocatalytic CO2 reduction, focusing on their key contributions in enhancing CO2 absorption, preactivation, regulating the behavior of photogenerated carriers, and steering the reaction pathway. At the same time, the synergistic potentials and application prospects of ILs in various coupled processes (such as photoelectrical, photothermal, and photoenzymatic) are discussed. Finally, this article outlines current research challenges and future development trends, aiming to provide a theoretical basis for an in-depth understanding of the promotional effect of ILs, and a new idea for enabling more efficient and robust ionic liquid-based photocatalytic reactions.
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