The effect of varying N/C ratios of nitrogen precursors during non-metal graphene catalyst synthesis
By Soo, Li Ting; Loh, Kee Shyuan; Mohamad, Abu Bakar; Daud, Wan Ramli Wan
Published in International Journal of Hydrogen Energy
2017
Abstract
Abstract Nitrogen-doped carbon materials have great potential as metal-free catalysts in a variety of applications, including batteries, supercapacitors and fuel cells. In this paper, nitrogen-doped graphene (NG) catalysts were synthesized via thermal annealing with varying ratios of graphite oxide and melamine precursors. The {NG} catalysts were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The prepared {NG} catalysts were folded transparent films with wrinkles. The nitrogen content of the {NG} catalysts calculated from {XPS} varied from approximately 4.18%