Recent Research Progress on Two-Dimensional Organic Framework Materials for Electrocatalytic Carbon Dioxide Reduction Applications.

The electrocatalytic reduction of carbon dioxide represents a pivotal strategy for mitigating greenhouse gas emissions and producing value-added chemicals. Two-dimensional organic framework materials (e.g., 2D-MOFs and 2D-COFs) have emerged as promising catalysts due to their high specific surface area, tunable structures, surface modification capabilities, and accessible active sites. This review systematically summarizes recent advances in 2D organic framework materials for CO2RR, categorizing discussions by target products: carbon monoxide, methane, formic acid, and multi-carbon compounds. Key structural design strategies-including metal center engineering, ligand modification, layer number tuning, and catalytic system optimization -are critically evaluated to elucidate their impact on activity, selectivity, and stability. Despite progress, challenges persist in long-term stability, low-concentration CO2 operation, and cost efficiency. Future directions emphasize "self-healing" frame materials, composite frame materials, and machine learning-guided design to advance industrial deployment.