Nanoflower Fe-base Complex for Efficient CO2 Fixation under Atmospheric Pressure

The cycloaddition of CO2 with epoxides to synthesize valuable chemicals is a promising strategy for advancing carbon neutrality. Herein, a novel iron-based complex (Fe@NTC) with a flower-like structure was employed as an efficient catalyst for the cycloaddition reaction between carbon dioxide and epoxides. Employed in the cycloaddition reaction between carbon dioxide and epoxides, Fe@NTC achieved remarkable conversion of cyclic carbonates, with efficiencies reaching up to 93% yield under UV irradiation. This exceptional performance is largely due to the catalyst's abundant active sites and superior photothermal catalytic capabilities. Comprehensive characterization techniques revealed that its distinct flower-shaped morphology significantly boosted photocatalytic efficiency. Through meticulous optimization via an orthogonal experimental design, we established ideal reaction conditions, under which Fe@NTC demonstrated consistent stability in repeated cycles. This research not only highlighted the efficacy of Fe@NTC in CO2 fixation but also paved the way for the development of innovative iron-based catalysts for environmental sustainability.