ИСТИНА

Graphite oxide is a layered material obtained by oxidation of graphite in an acidic environment. There are two main ways to obtain graphite oxide – Hammers’ and Brodie’s methods. The materials obtained by these methods (HGO and BGO) differ in degree of oxidation, composition of the oxygen-containing groups as well as ability to swell in polar liquids; HGO swells more easily compared to BGO. The membranes based on graphite oxide capable of retaining gases and sorbing, separating, and purifying many polar liquids. In the systems “BGO–polar liquid” for acetonitrile, DMFA and alcohols the reversible phase transformations were observed with release of part of the sorbed liquid and decrease of the inter-plane distance. The aim of the present work was to establish the dependence of the phase transformation in the system “BGO–acetonitrile” on the oxidation level of the material.