sp2 amorphous carbons in view of multianalytical consideration: Normal, expeсted and new

Publication date: 15 November 2019Source: Journal of Non-Crystalline Solids, Volume 524Author(s): Yevgeny A. Golubev, Natalia N. Rozhkova, Evgeniy N. Kabachkov, Yuri M. Shul'ga, Krystyna Natkaniec-Hołderna, Ireneusz Natkaniec, Igor V. Antonets, Boris A. Makeev, Nadezhda A. Popova, Vera A. Popova, Elena F. ShekaAbstractsp2 Amorphous carbons are considered as objects of the modern nanotechnology. A particular set of the highest‑carbon-content sp2 species, two natural amorphous carbons (shungite carbon and antraxolite) as well as two engineered carbon blacks were subjected to analytical study by using a set of selected modern structural and compositional analytical techniques. The suggested approach occurred quite efficient and allowed disclosing a number of steady points that are common to the whole class of this carbon allotrope and are able to get a vision of atom-molecular representation of the solids. Among the commonalities observed, there are the following: i) sp2 Amorphous carbons are conglomerates of nanographites, basic structure units of which lay the foundation of the atom-molecular description of the solids. ii) The units represent framed graphene molecules of 1÷2 nm and of 1÷ (1÷3)*10 nm in size in the case of natural and engineered products, respectively. iii) The molecule framing, predominantly incomplete with respect to the number of vacant places, concerns only edge atoms and is implemented by the related chemical additives, such as hydrogen, oxygen, ...
Source: Journal of Non Crystalline Solids - Category: Chemistry Source Type: research