Light-driven CO2 conversion to CH3OH utilizing Pt-decorated LSCFO nanotubes fabricated by direct coaxial electrospinning

Light-driven CO 2 conversion to high-value chemicals has emerged as promising but challenging strategy to alleviate global energy and environmental concerns. The efficacy of this process hinges critically on the design of advanced catalysts. Herein, the metallic co-catalysts Pt deliberately anchored onto the surface of La 0.8 Sr 0.2 Co 0.7 Fe 0.3 O 3 (LSCFO) nanotubes was constructed via direct coaxial electrospinning method. Experimental analyses and density functional theory (DFT) simulations confirmed that the incorporation of Pt creates additional active sites and suppresses the recombination of photo-generated electron-hole pairs, thereby enhancing photocatalytic CO 2 reduction capability. Under visible light illumination, the optimized Pt 6 /LSCFO catalyst demonstrated a remarkable CH 3 OH yield of 7.20 μmol·g⁻¹·h⁻¹, outperforming pristine LaCoO 3 by a factor of 3.48. Moreover, the catalyst retains its structural integrity and catalytic performance over four consecutive cycles, demonstrating excellent stability. This work presents an integrated strategy via one-step coaxial electrospinning method for constructing high-performance composite photocatalysts.