铜分子催化剂用于光电化学水氧化

摘要

本文将光敏剂[Ru (bpy)2(H2 dcbpy)](PF6)2和催化剂Cu(F3 TPA)(ClO4)2负载到TiO2/FTO电极上,成功构筑了光电化学水氧化器件.催化剂和光敏剂的负载量分别为5.56×10-8 mol·cm-2和8.3×10-8mol·cm-2时,施加0.2 V vs NHE的外电压,其在硼酸缓冲溶液中的光电流密度可达20 μA/cm2,连续光照300 s,仍可保持很好的活性,稳定性较好.%Here,we presented a photoelectrochemical device for water oxidation based on a photosensitizer [Ru (bpy) 2 (H2 dcbpy)] (PF6)2 (bpy =2,2'-bipyridine;H2 dcbpy =2,2'-bipyridine-4,4'-dicarboxylic acid) and a molecular catalyst Cu(F3 TPA) (ClOt)2 [F3 TPA=tris((6-fluoropyridin-2-yl) methyl) amine].8.3 × 10-8 mol · cm-2 and 5.56× 10-8 mol · cm-2 photosensitizer and catalyst were located on TiO2/FTO electrode respectively.A photocurrent density 20 μA/cm2 was obtained when a 0.2 V vs NHE external bias was applied.Continuous light-irradiation with LED for 300 s,the catalytic activity and stability can be well maintained.