Preparation 3D graphene materials and studying their sorption properties

The study explores the potential of graphite oxide (GO) as a carbon base for the fabrication of porous sorbents and catalysts, a subject of pressing concern in the domains of water purification and organic synthesis. The research objective was to obtain three-dimensional graphene materials by chemical reduction and to study their sorption properties. Graphite oxide was synthesized using a modified Hammers method. Graphite oxide was reduced by exposure to ultrasound in an aqueous medium with ascorbic acid (AK) and ethylenediamine (EDA). Hydrogels from reduced graphite oxide (rGO) were freeze-dried. Graphite aerogels were obtained by drying hydrogels by sublimation. Аerogels were characterized by the following methods X-ray phase analysis, scanning electron microscope and energy-dispersive X-ray spectroscopy, transmission electron microscopy, IR- and Raman spectroscopy. The specific surface area (Ssa) of the carbon materials was measured using a methylene blue. The samples of rGO have different morphologies. It was hypothesised that, during the process of reduction by EDA, oxygen-containing groups would be functionalised on the surface of graphene oxide. The samples of aerogel from r