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Electron microscopy of structural state of carbon filaments with metal particles

DOI 10.18127/j22250999-201804-04

Keywords:

O.M. Zhigalina – Dr.Sc. (Phys.-Math.), Leading Research Scientist , Federal Scientific Research Center «Crystallography and Photonics» of RAS (Moscow); Professor, Bauman Moscow States Technical University
E-mail: zhigal@ns.crys.ras.ru
A.E. Sufyianova – Мaster Student, Bauman Moscow States Technical University;  Engineer, Federal Scientific Research Center «Crystallography and Photonics» of RAS (Moscow)
E-mail: sufiyanova.alena@gmail.com
V.G. Basu − Ph.D. (Phys.-Math.), Research Scientist, Federal Scientific Research Center «Crystallography and Photonics» of RAS (Moscow)
E-mail: v.zhigalina@gmail.com
I.I. Ponomarev ‒ Dr.Sc. (Chem.), Chief Research Scientist,  A.N. Nesmeyanov Institute of Organoelement Compounds of RAS (Moscow)
E-mail: gagapon@ineos.ac.ru
K.M. Skupov ‒ Ph.D. (Chem.), Senior Research Scientist, A.N. Nesmeyanov Institute of Organoelement Compounds of RAS (Moscow)
E-mail: kskupov@gmail.com
D. Yu. Razorenov ‒ Ph.D. (Chem.), Senior Research Scientist, A.N. Nesmeyanov Institute of Organoelement Compounds of RAS (Moscow)
E-mail: razar@ineos.ac.ru
Iv.I. Ponomarev ‒ Ph.D. (Chem.), Senior Research Scientist, A.N. Nesmeyanov Institute of Organoelement Compounds of RAS (Moscow)
E-mail: ivan.ponomarev84@gmail.com


Structure of carbon nanofibers with Ni, Co and Pt metal nanoparticles was studied by transmission electron microscopy, electron dif-fraction and energy-dispersive analysis. Carbon nanofiber mats were obtained by the electrospinning from polyacrylonitrile solution. The structure of the fibers was visualized, dimensions, shape, and mutual arrangement of metal particles were determined. It was established that the Co, Ni and Pt particles had an fcc lattice (space group Fm3m). The particles of cobalt and nickel revealed sizes up to 100 nm, and particles of platinum - up to 10 nm. In the process of annealing of nanofibers while moving, cobalt and nickel particles formed channels and pores in the body of nanofibers, contributing to their crystallization. Platinum particles demonstrated a different morphology. Needle-shaped particles were observed  in the case of samples with nickel. In samples with cobalt platinum particles had a rounded or elongated shape with branches.

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May 29, 2020

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