摘要
Photoelectrochemical(PEC)water splitting is a promising approach for renewable hydrogen production.However,the practical PEC solar-to-fuel conversion efficiency is still low owing to poor light absorption and rapid recombination of charge carriers in photoelectrode.In this work,we report a ternary photoanode with simultaneously enhancement of light absorption and water oxidation efficiency by introducing copper phthalocyanine(CuPc)and nickel iron-laye red double hydroxide(NiFe-LDH)on TiO_(2)(denoted as TiO_(2)/CuPc/NiFe-LDH).An experimental study reveals that CuPc loading on TiO_(2)bring strong visible light absorption;NiFe-LDH as an oxygen evolution reaction catalyst efficiently accelerates the surface water oxidation reaction.This synergistic effect of CuPc and NiFe-LDH gives enhanced photocurrent density(2.10 mA/cm^(2)at 0.6 V vs.SCE)and excellent stability in the ternary TiO_(2)/CuPc/NiFeLDH photoanode.
基金
supported by the Beijing Natural Science Foundation(No.2192040)
the National Natural Science Foundation of China(Nos.21922501,21871021,21521005 and 21902042)
the Science Foundation of Hebei Normal University(No.L2019B14)。
