▎ 摘　　要

The aim of this study is to investigate the photoelectrochemical (PEC) water splitting properties of alpha-Fe2O3/reduced graphene oxide nanocomposite (alpha-Fe2O3/rGO) and the significance of annealing temperature on the photoelectrochemical performance. The alpha-Fe2O3/rGO nanocomposite deposited on FTO substrate, using electrochemical deposition and annealed in atmospheric N-2 at 300, 500 and 700 degrees C. The synthesized nanocomposites were characterized by raman spectroscopy, X-ray photoelectron spectroscopy, and field emission scanning electron microscopy. The alpha-Fe2O3/rGO nanocomposites were used as photoanode materials in the PEC water splitting process. The results shows the reduced graphene oxide acts as an electron acceptor leading to an increase of availability of photo-generated electrons and hence higher PEC performance of alpha-Fe2O3/rGO nanocomposites compared to pure alpha-Fe2O3. The photoanode annealed at 700 degrees C shows the highest PEC performance.