▎ 摘　　要

The article presents the results of sorption-photocatalytic investigations into the properties of dichalcogenides of molybdenum. It has been found that properties and characteristics depend on dimensional factor, type of illumination, the pH of the solution and preparation of photocatalyst samples. It has been shown that the dimensional factor substantionally affects sorption-photocatalytic properties: in transfer from micron powders to graphene nanoparticles the specific capacity of the latter with respect to methylene blue increases two-fold as compared with micron analogues. The obtained data indicate good prospects of using graphene-like dichalcogenides of molybdenum as photocatalysts.