▎ 摘　　要

We report a novel method to synthesize a novel alpha-Fe2O3 pyramid interspersed reduced graphene oxide composite by continuous 20-second flame treatment. The structural and morphological characteristics of the obtained composites were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, Raman spectrum, and Field-emission scanning electron microscopy. Pyramid-type alpha-Fe2O3 is found to be successfully decorated on reduced graphene oxide. Such a unique composite not only gives a high specific capacitance (965.7 F/g at 5 mV/s) and a good cycling performance, but also shows a strong, stable photo-degradation capacity of Rhodamine-B under simulation solar light (with 100% of degradation rate within 10 min). It is worthy of note that the content of graphene oxide in precursors is found to highly affect the formation of the crystal structure of alpha-Fe2O3, thus intensely affecting the electrochemical behaviors and photo-degradation capacity. (C) 2018 Elsevier B.V. All rights reserved.