Синтез луковичных наноструктур углерода при пиролизе ароматических углеводородов
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Дата
2006
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
Анотація
Впервые предложен новый метод синтеза трубчатых и луковичных наноструктур углерода на ряду с фуллеренами при пиролизе ароматических углеводородов. С помощью электронной микроскопии получено, что некоторые луковичные структуры образуются в форме образований с диаметром более 10 нм. Предположен и обсужден механизм, применяемый для описания всех пространственных форм углерода.
A novel method for the simultaneous derivation of tubular and onion-like carbon nanostructures along with fullerenes by pyrolysis of benzene is proposed for the first time. Onion-like structures with a fullerene as a nucleation center are formed in the reaction zone with lower temperature in comparision with that, at which nanotubes grow. It is found by means of high-resolution transmission electron microscopy that some onion-like structures comprise large hollows with a diameter more than 10 nm and there are no metal-containing particles at the tips of nanotubes. A novel mechanism applicable for all spacious forms of carbon is proposed and discussed. It is supposed that building a grapheme plate is realized as a result of the condensation reaction of molecules of benzene. Fullerene and onion-like structures comprising hexa- and pentagons are formed due to the interaction among molecules of benzene and those of cyclopentadien and toluene which are intermediately formed by pyrolysis of benzene.
A novel method for the simultaneous derivation of tubular and onion-like carbon nanostructures along with fullerenes by pyrolysis of benzene is proposed for the first time. Onion-like structures with a fullerene as a nucleation center are formed in the reaction zone with lower temperature in comparision with that, at which nanotubes grow. It is found by means of high-resolution transmission electron microscopy that some onion-like structures comprise large hollows with a diameter more than 10 nm and there are no metal-containing particles at the tips of nanotubes. A novel mechanism applicable for all spacious forms of carbon is proposed and discussed. It is supposed that building a grapheme plate is realized as a result of the condensation reaction of molecules of benzene. Fullerene and onion-like structures comprising hexa- and pentagons are formed due to the interaction among molecules of benzene and those of cyclopentadien and toluene which are intermediately formed by pyrolysis of benzene.
Опис
Ключові слова
наноструктуры, углерод, пиролиз, углеводороды, синтез, луковичные, фуллерены, карбон, nanostructures, carbon, pyrolysis, benzene, synthesis, onion-like, fullerenes, кафедра харчової хімії
Бібліографічний опис
Синтез луковичных наноструктур углерода при пиролизе ароматических углеводородов / А. И. Харламов, Л. Н. Ушкалов, Н. В. Кириллова, В. В. Фоменко, Н. И. Губарени, А. В. Скрипниченко // Доповіді Національної академії наук України. – 2006. – №3. – С. 97-103.