КФУ. Карточка публикации. Gamma-Iron Phase Stabilized at Room Temperature by Thermally Processed Graphene Oxide

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GAMMA-IRON PHASE STABILIZED AT ROOM TEMPERATURE BY THERMALLY PROCESSED GRAPHENE OXIDE

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2018

Язык

английский

Авторы, сотрудники КФУ

Вагизов Фарит Габдулхакович, автор

Валимухаметова Алина Рестемовна, автор

Димиев Айрат Маратович, автор

Киямов Айрат Газинурович, автор

Таюрский Дмитрий Альбертович, автор

Ханнанов Артур Айдарович, автор

Библиографическое описание на языке оригинала

Khannanov A. Gamma-Iron Phase Stabilized at Room Temperature by Thermally Processed Graphene Oxide / A. Khannanov, A. Kiiamov, A. Valimukhametova [at al.] // J. Am. Chem. Soc. – 2018. – V.140, No. 29. – P. 9051-9055.

Аннотация

Stabilizing nanoparticles on surfaces, such as graphene, is a growing field of research. Thereby, iron particle stabilization on carbon materials is attractive and finds applications in charge-storage devices, catalysis, and others. In this work, we describe the discovery of iron nano-particles with the face-centered cubic structure that was postulated not to exist at ambient conditions. In bulk, the y-iron phase is formed only above 917 ?C, and transforms back to the thermodynamically favored a-phase upon cooling. Here, with X-ray diffraction and Mossbauer spectroscopy we unambiguously demonstrate the unexpected RT stability of the y-phase of iron in the form of the nanoparticles with low carbon content from 0.60% through 0.93%. The nanoparticles have controllable diameter range from 30 nm through 200 nm. They are stabilized by a layer of Fe/C solid solution on the surface, serving as the buffer controlling carbon content in the core, and by layer graphene as an outermost shell.

Ключевые слова

graphene oxide, gamma-iron, X-ray diffraction, Mossbauer spectroscopy

Название журнала

J AM CHEM SOC

Ссылка для РПД

http://dspace.kpfu.ru/xmlui/bitstream/handle/net/131893/jacs.8b04829.pdf?sequence=1&isAllowed=y

URL

https://pubs.acs.org/doi/10.1021/jacs.8b04829

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https://repository.kpfu.ru/?p_id=183967

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Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Вагизов Фарит Габдулхакович	ru_RU
dc.contributor.author	Валимухаметова Алина Рестемовна	ru_RU
dc.contributor.author	Димиев Айрат Маратович	ru_RU
dc.contributor.author	Киямов Айрат Газинурович	ru_RU
dc.contributor.author	Таюрский Дмитрий Альбертович	ru_RU
dc.contributor.author	Ханнанов Артур Айдарович	ru_RU
dc.date.accessioned	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	Khannanov A. Gamma-Iron Phase Stabilized at Room Temperature by Thermally Processed Graphene Oxide / A. Khannanov, A. Kiiamov, A. Valimukhametova [at al.] // J. Am. Chem. Soc. – 2018. – V.140, No. 29. – P. 9051-9055.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=183967	ru_RU
dc.description.abstract	J AM CHEM SOC	ru_RU
dc.description.abstract	Stabilizing nanoparticles on surfaces, such as graphene, is a growing field of research. Thereby, iron particle stabilization on carbon materials is attractive and finds applications in charge-storage devices, catalysis, and others. In this work, we describe the discovery of iron nano-particles with the face-centered cubic structure that was postulated not to exist at ambient conditions. In bulk, the y-iron phase is formed only above 917 ?C, and transforms back to the thermodynamically favored a-phase upon cooling. Here, with X-ray diffraction and Mossbauer spectroscopy we unambiguously demonstrate the unexpected RT stability of the y-phase of iron in the form of the nanoparticles with low carbon content from 0.60% through 0.93%. The nanoparticles have controllable diameter range from 30 nm through 200 nm. They are stabilized by a layer of Fe/C solid solution on the surface, serving as the buffer controlling carbon content in the core, and by layer graphene as an outermost shell.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	graphene oxide	ru_RU
dc.subject	gamma-iron	ru_RU
dc.subject	X-ray diffraction	ru_RU
dc.subject	Mossbauer spectroscopy	ru_RU
dc.title	Gamma-Iron Phase Stabilized at Room Temperature by Thermally Processed Graphene Oxide	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU