Adsorption characteristics of nanographite oxide obtained from thermally expanded graphite

Nanographite oxide was synthesized from thermally expanded graphite in an environmentally friendly electrochemical manner, and its adsorption properties were examined in a batch system. Three two-parameter isotherm models (Langmuir, Freundlich, and Dubinin-Radushkevich) were applied for the experimental data processing, and the adsorption kinetics was estimated according to pseudo-first and pseudo-second order simplified kinetic models. The acquired results revealed that obtaned nanographite oxide can be employed as an inexpensive and efficient adsorbent for removal of acidic dyes from aqueous solutions.