From graphene oxide towards aminated graphene: facile synthesis, its structure and electronic properties.

Autor: Rabchinskii MK; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Ryzhkov SA; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Kirilenko DA; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia. Demid.Kirilenko@mail.ioffe.ru.; ITMO University, 49 Kronverksky Pr., 197101, Saint Petersburg, Russia. Demid.Kirilenko@mail.ioffe.ru., Ulin NV; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Baidakova MV; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Shnitov VV; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Pavlov SI; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Chumakov RG; NRC 'Kurchatov Institute', 1 Akademika Kurchatova pl., 123182, Moscow, Russia., Stolyarova DY; NRC 'Kurchatov Institute', 1 Akademika Kurchatova pl., 123182, Moscow, Russia., Besedina NA; St. Petersburg Academic University, Khlopin St. 8/3, 194021, Saint Petersburg, Russia., Shvidchenko AV; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia., Potorochin DV; ITMO University, 49 Kronverksky Pr., 197101, Saint Petersburg, Russia.; Technische Universität Bergakademie Freiberg, Akademiestraße 6, 09599, Freiberg, Germany.; Deutsches Elektronen-Synchrotron DESY, 85 Notkestraße, Hamburg, D-22607, Germany., Roth F; Technische Universität Bergakademie Freiberg, Akademiestraße 6, 09599, Freiberg, Germany., Smirnov DA; Institut fur Festkorper und Materialphysik, Technische Universitat Dresden, Dresden, Germany., Gudkov MV; Semenov Institute of Chemical Physics of Russian Academy of Sciences, Kosygina St., 4, 119991, Moscow, Russia., Brzhezinskaya M; Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany., Lebedev OI; Laboratoire CRISMAT, ENSICAEN UMR6508, 6 Bd Maréchal Juin, Cedex 4, Caen, 14050, France., Melnikov VP; Semenov Institute of Chemical Physics of Russian Academy of Sciences, Kosygina St., 4, 119991, Moscow, Russia., Brunkov PN; Ioffe Institute, 26 Politekhnicheskaya, 194021, Saint Petersburg, Russia.; ITMO University, 49 Kronverksky Pr., 197101, Saint Petersburg, Russia.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2020 Apr 23; Vol. 10 (1), pp. 6902. Date of Electronic Publication: 2020 Apr 23.
DOI: 10.1038/s41598-020-63935-3
Abstrakt: In this paper we present a facile method for the synthesis of aminated graphene derivative through simultaneous reduction and amination of graphene oxide via two-step liquid phase treatment with hydrobromic acid and ammonia solution in mild conditions. The amination degree of the obtained aminated reduced graphene oxide is of about 4 at.%, whereas C/O ratio is up to 8.8 as determined by means of X-ray photoelectron spectroscopy. The chemical reactivity of the introduced amine groups is further verified by successful test covalent bonding of the obtained aminated graphene with 3-Chlorobenzoyl chloride. The morphological features and electronic properties, namely conductivity, valence band structure and work function are studied as well, illustrating the influence of amine groups on graphene structure and physical properties. Particularly, the increase of the electrical conductivity, reduction of the work function value and tendency to form wrinkled and corrugated graphene layers are observed in the aminated graphene derivative compared to the pristine reduced graphene oxide. As obtained aminated graphene could be used for photovoltaic, biosensing and catalysis application as well as a starting material for further chemical modifications.
Databáze: MEDLINE
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