Investigating efficient photothermal conversion towards CO2 reduction

CO2 reduction is an effective method for achieving carbon neutralization, and photothermal catalysis is a promising strategy that combines thermal and photochemical processes using visible light to stimulate carbon neutrality. Unlike traditional photocatalysis, the use of photothermal catalysis allows for higher utilization of sunlight and a more efficient energy conversion due to its synergetic effect. However, there is still a need to systematically sort out the concept and principle of photothermal catalysis and analyze its current situation to further the understanding of researchers and achieve better results. In this review, we present the fundamental features and recent achievements in the photothermal reduction of CO2. We also engage in a deeper discussion on the challenges faced in achieving higher photothermal conversion efficiency. This includes addressing the optimum material, synergy mechanism, and main products used in the photothermal process. By highlighting these potential variables and current progress in CO2 photothermal reduction, we hope to provide valuable ideas and references for the further development of carbon neutralization in the future. Overall, photothermal catalysis has the potential to accelerate the process of carbon neutralization and bring the world one step closer to a sustainable future.