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Title: CVD graphene sheets electrochemically decorated with “core-shell” Co/CoO nanoparticles
Authors: Bayev, V. G.
Fedotova, J. A.
Kasiuk, J. V.
Vorobyova, S. A.
Sohor, A. A.
Komissarov, I. V.
Kovalchuk, N. G.
Prischepa, S. L.
Kargin, N. I.
Andrulevicius, M.
Przewoznik, J.
Kapusta, C.
Ivashkevich, O. A.
Tyutyunnikov, S. I.
Kolobylina, N. N.
Guryeva, P. V.
Keywords: публикации ученых;Twisted graphene;Core-shell magnetic nanoparticles;X-ray photoemission spectroscopy;Raman spectroscopy
Issue Date: 2018
Publisher: Elsevier B.V. Holland
Citation: CVD graphene sheets electrochemically decorated with “core-shell” Co/CoO nanoparticles / V. G. Bayev and others // Applied Surface Science. – 2018. – Vol. 440. – P. 1252 - 1260. - DOI :
Abstract: The paper reports on the first successful fabrication of Co-graphene composites by electrochemical deposition of Co nanoparticles (NPs) on the sheets of twisted graphene. Characterization of the surface morphology and element mapping of twisted graphene decorated with Co NPs by transmission and scanning electron microscopy in combination with the energy-dispersive X-ray spectroscopy reveals the formation of isolated quasi-spherical oxidized Co NPs with the mean diameter h di _ 220 nm and core-shell structure. X-ray photoelectron spectroscopy indicates that the core of deposited NPs consists of metal Co while the shell is CoO. Composite Co-graphene samples containing core-shell NPs reveal an exchange bias field up to 160 Oe at 4 K as detected by vibrating sample magnetometry after the field cooling procedure.
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