The investigation of the physicochemical properties of the monolayers oxide doped with nitrogen

Abstract

The paper presents the results of research of behavior of films of the graphene oxide, doped with nitrogen (NGO) formed at the interface water-air. The curves of dependence of surface tension of the films on the occupied area were obtained. It is shown that the behavior of the monolayer of the graphene oxide, doped with nitrogen, similar to the behavior of Langmuir films of the single-layer graphene oxide. The stability of the monolayers of the nitrogen-containing graphene oxide was investigated. The study of the stability of the Langmuir films showed that the NGO monolayer in different phase states is stable. In the measurement of the
hysteresis curves of compression and expansion of the monolayer is found that the number of cycles of compression of the film does not affect the size of the film in the liquid-extended state. For monolayer in the liquid condensed state, repeated compression leads to a decrease in the area of film. Based on the obtained results, we can conclude that graphene oxide doped with nitrogen forms a stable monolayer on water surface and can be used to produce films by the Langmuir-Blodgett technology