Thin films of the metal-organic framework (MOF) Cu(BDC) were electrochemically grown by anodic deposition of the ligand 1,4-benzenedicarboxylate (1,4-BDC) on metallic copper to form Cu/Cu₂O-Cu(BDC) electrode. The construction of the electrode was optimized by investigating parameters such as current density, time of anodization, and temperature that directly affect its stability and photoactivity. The best performing electrode was prepared when a current density of 2.5 mA cm⁻² was applied for 6.5 min at 110 °C. A methanol concentration of 234 μmol L^-1 was produced from the photoelectron reduction of CO₂ under UV–vis irradiation for 3 h, an applied potential of +0.10 V, and 0.1 mol L^-1 aqueous sodium sulfate solution saturated with CO₂ as supporting electrolyte. The rate of CO₂ reduction to methanol was found to be ∼20 times that obtained using Cu/Cu₂O electrode alone presumably due to preconcentration of dissolved CO₂ in the MOF. The capture of CO₂ in the MOF surface and/or cavities was confirmed by ATR and DRIFT spectroscopy.

通过在金属铜上阳极沉积配体1,4-苯二甲酸（1,4-BDC）形成金属-有机骨架（MOF）Cu（BDC）薄膜，以形成Cu / Cu ₂ O- Cu（BDC） ）电极。通过研究直接影响其稳定性和光活性的参数，例如电流密度，阳极氧化时间和温度，可以优化电极的结构。当在110°C下施加2.5 mA cm ^-2的电流密度6.5 min时，制备出性能最佳的电极。在紫外线可见辐射下3 h，+ 0.10 V的施加电势和0.1 mol L的光电子还原CO ₂产生的甲醇浓度为234μmolL ^-1。-1饱和的CO ₂硫酸钠水溶液作为辅助电解质。发现CO ₂还原为甲醇的速率约为单独使用Cu / Cu ₂ O电极获得的速率的20倍左右，这大概是由于MOF中溶解的CO _2的预浓缩所致。通过ATR和DRIFT光谱证实了MOF表面和/或腔体中CO ₂的捕获。