KFU. Card publication. Direct Growth of the Oriented Nanocrystals of Gamma-Iron on Graphene Oxide Substrate. The Detailed Analysis of the Factors Affecting Unexpected Formation of the Gamma-Iron Phase

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DIRECT GROWTH OF THE ORIENTED NANOCRYSTALS OF GAMMA-IRON ON GRAPHENE OXIDE SUBSTRATE. THE DETAILED ANALYSIS OF THE FACTORS AFFECTING UNEXPECTED FORMATION OF THE GAMMA-IRON PHASE

Form of presentation

Articles in international journals and collections

Year of publication

2019

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Authors, employees of KFU

Vagizov Farit Gabdulkhakovich, author

Valimukhametova Alina Restemovna, author

Dimiev Ayrat Maratovich, author

Kiyamov Ayrat Gazinurovich, author

Khannanov Artur Aydarovich, author

Bibliographic description in the original language

Direct Growth of the Oriented Nanocrystals of Gamma-Iron on Graphene Oxide Substrate. The Detailed Analysis of the Factors Affecting Unexpected Formation of the Gamma-Iron Phase / A. Khannanov [at al.] // New J. Chem. - 2019. - V.43, - P.12923-12931.

Annotation

In bulk, face-centered gamma-iron exists only at temperatures above 917 ?C, returning back to body-centered alpha-iron upon cooling below this temperature. In this work, we report formation of the gamma-iron phase at temperatures significantly lower than the 917 ?C threshold in the form of nanoparticles. Moreover, the as-grown nanoparticles have specific orientation along the (002) plane as the result of the templating effect of the graphene oxide substrate. Also, we provide a complete account of the factors responsible for the formation of the gamma-phase. Namely, we demonstrate the role of the type of carbon substrate, and the effect of the temperature and time of annealing and the graphene oxide/iron ion ratio. We demonstrate that the gamma-phase is not formed when using three-dimensional forms of carbon, elucidating the “magic” role of graphene oxide in this process.

Keywords

Gamma-iron nanoparticles, graphene oxide substrate, X-ray, Mossbauer effect, SEM images

The name of the journal

NEW JOURNAL OF CHEMISTRY

On-line resource for training course

http://dspace.kpfu.ru/xmlui/bitstream/handle/net/158237/F_Direct_Growth_of_the_Oriented_Nanocrystals_of_Gamma_Iron_on_Graphene_Oxide_Substrate.pdf?sequence=1&isAllowed=y

URL

https://pubs.rsc.org/en/content/articlelanding/2019/nj/c9nj02903f#!divAbstract

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=206263&p_lang=2

Resource files

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F_Direct_Growth_of_the_Oriented_Nanocrystals_of_Gamma_Iron_on_Graphene_Oxide_Substrate.pdf	6,32	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Vagizov Farit Gabdulkhakovich	ru_RU
dc.contributor.author	Valimukhametova Alina Restemovna	ru_RU
dc.contributor.author	Dimiev Ayrat Maratovich	ru_RU
dc.contributor.author	Kiyamov Ayrat Gazinurovich	ru_RU
dc.contributor.author	Khannanov Artur Aydarovich	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	Direct Growth of the Oriented Nanocrystals of Gamma-Iron on Graphene Oxide Substrate. The Detailed Analysis of the Factors Affecting Unexpected Formation of the Gamma-Iron Phase / A. Khannanov [at al.] // New J. Chem. - 2019. - V.43, - P.12923-12931.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=206263&p_lang=2	ru_RU
dc.description.abstract	NEW JOURNAL OF CHEMISTRY	ru_RU
dc.description.abstract	In bulk, face-centered gamma-iron exists only at temperatures above 917 ?C, returning back to body-centered alpha-iron upon cooling below this temperature. In this work, we report formation of the gamma-iron phase at temperatures significantly lower than the 917 ?C threshold in the form of nanoparticles. Moreover, the as-grown nanoparticles have specific orientation along the (002) plane as the result of the templating effect of the graphene oxide substrate. Also, we provide a complete account of the factors responsible for the formation of the gamma-phase. Namely, we demonstrate the role of the type of carbon substrate, and the effect of the temperature and time of annealing and the graphene oxide/iron ion ratio. We demonstrate that the gamma-phase is not formed when using three-dimensional forms of carbon, elucidating the “magic” role of graphene oxide in this process.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Gamma-iron nanoparticles	ru_RU
dc.subject	graphene oxide substrate	ru_RU
dc.subject	X-ray	ru_RU
dc.subject	Mossbauer effect	ru_RU
dc.subject	SEM images	ru_RU
dc.title	Direct Growth of the Oriented Nanocrystals of Gamma-Iron on Graphene Oxide Substrate. The Detailed Analysis of the Factors Affecting Unexpected Formation of the Gamma-Iron Phase	ru_RU
dc.type	Articles in international journals and collections	ru_RU