  Conventional fabrication methods to produce graphene are cumbersome,
expensive and are not ecology friendly. This is due to the fact that a large
volume of raw materials requires a large number of acids and alkalis, which in
turn requires special disposal. Therefore, it is necessary to develop new
technologies or refine existing technologies for the production of graphene and
create new ecology-safe and effective methods to produce graphene. Here, we
utilized the physical dispergation to extract graphene films from natural
mineral shungite rock. We studied the structure of shungite via Raman
spectrometry and X-ray phases analysis and found that the shungite refers to
graphite-like mineral structures. From spectral data, we learned that the main
constituent of shungite is amorphous carbon in sp2 and sp3 forms. Transmission
electron microscopy images of the processed material revealed that the obtained
graphene films with well-developed surfaces are as small as 200 nanometers. Our
green fabrication method of graphene can be widely used in a variety of fields
from electronics (electrodes), optics, biotechnology (biosensors), ecology
(sorbents for wastewater, air purification) to list a few.
