Синтез вуглецевих наноструктур при використанні дешевих марок графіту

• Дата: 2022
• Автори: Золотаренко, Ол. Д., Рудакова, О. П., Аханова, Н. Е., Уалханова, М., Золотаренко, Ан. Д., Щур, Д. В., Габдуллин, М. Т., Гаврилюк, Н. А., Мироненко, Т. В., Золотаренко, О. Д., Чимбай, М. В., Загорулько, І. В., Тарасенко, Ю. О., Гаврилюк, О. О.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2022
• Теми: нанотехнології; вуглецеві наноструктури (ВНС); фуллерени; нанокомпозити; вуглецеві нанотрубки (ВНТ); графен; осадження; плазма; електродуговий синтез; графіт марки (SIGE) «Спеціально імпрегновані графітові електроди»; графіт марки (FGDG-7) «Дрібно зернистий щільний графіт»
• Онлайн доступ: https://surfacezbir.com.ua/index.php/surface/article/view/750
• Назва журналу: Surface

In the work, carbon nanostructures (CNS) were synthesized on a plasma chemical plant using graphite electrodes SIGE (Special Impregnated Graphite Electrodes) and FGDG-7 (Fine-grained dense graphite) in a helium environment. In the experiments, it was established that graphite electrodes of the SIGE brand are suitable for the synthesis of CNS by the electric arc plasma chemical method. In addition, the experiments indicate that SIGE graphite in electric arc synthesis in a gas environment allows the creation of centimeter composite rods (deposits), where the core consists of graphene sheets rolled into nanotubes that can withstand extremely high temperatures (>4000 K). Studies using scanning microscopy have shown that the synthetic deposit of SIGE graphite can be divided into blocks, which is important for its use in high voltage stations because it is possible to prepare deposits of the required length without mechanical impact and without violating the integrity of its structure. The structure of the synthesized carbon materials was studied by scanning and transmission electron microscopy and it was shown that carbon nanotubes are formed during the evaporation of SIGE brand graphite even without the use of a catalyst. Experiments have confirmed that the mass yield of wall fullerene-containing carbon black during the evaporation of SIGE grade graphite significantly exceeds the results obtained during the evaporation of FGDG-7 grade graphite electrodes. Such results make SIGE graphite more productive for the synthesis of expensive carbon nanoproducts (fullerenes and fullerene-like structures) by the electric arc method. It was also recorded that during the synthesis of carbon nanostructures, single-walled carbon nanotubes are formed, which have a positive charge and are deposited in the form of a core on the surface of the cathode electrode under the action of an electromagnetic field.