▎ 摘　　要

In this study, a novel ternary hematite nanocomposites photoanode structure with superior photoelectrochemical (PEC) performance consisting of fullerene (C-60) and 2D-electrochemical reduced graphene oxide (eRGO) used as the effective surface passivators is developed. The introduction of both the electron scavenging C-60 and highly conducting eRGO has mitigated the high interfacial recombination rate of hematite and led to the superior enhancement in PEC performance. UV-vis analysis reveals that the incorporation of C-60 and eRGO can provide a stronger light absorption at the visible light (400 nm < < 700 nm) and near infrared (IR) region ( > 700 nm). Through the electrochemical impedance spectroscopy measurements, it can be concluded that the introduction of C-60 and eRGO onto hematite photoanode improves electron transfer and collection, reduces charge-carrier recombination efficiency, and enhances PEC activity. The resultant ternary hematite photoanode structure exhibits 16.8-fold enhancement in photocurrent density and 0.8-fold reduction in charge transfer resistance when compared to the bare hematite structure only. This study has shown that the application of C-60, 2D-eRGO, or in combination as a ternary structure provides the plasmonic effect that can enhance the PEC performance in hematite photoanode structure.