Abstract

The physical and electrochemical properties of a novel nitrogen-doped reduced graphene oxide (N-rGO) material were studied. The novel material was synthesized using biological microorganisms and non-toxic chemicals. In addition, the effect of the high shear treatment on material particle size and suspension stability was investigated. The material was characterized by particle size distribution analysis, X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetric analysis, and gas adsorption methods. The N-rGO material has low porosity but its specific surface area and total pore volume increased fourfold and tenfold, respectively, due to the high shear treatment. Electrochemical oxygen reduction activity measurements were conducted in 0.1 M HClO₄ and 0.1 M KOH solutions using rotating disc electrode and cyclic voltammetry methods.

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