Τίτλος:
Magnetic resonance study of carbon encapsulated Ni nanoparticles
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Magnetic resonance study of six samples consisting of carbon encapsulated nickel nanoparticles or carbon nanotubes ended with such nickel nanoparticles was carried out at room temperature. Samples of Ni/C were prepared by carburization of nanocrystalline nickel by ethylene (C 2H 4) and methane (CH 4). Hydrocarbons decomposition on nickel nanoparticles was done at temperatures 500, 600 and 700°C. Magnetic resonance spectra of samples designated as CH 4/500, CH 4/600, CH 4/700, C 2H 4/500, C 2H 4/600 and C 2H 4/700 were obtained by Bruker E 500 spectrometer. The integrated intensities of the resonance spectra were correlated with the carburization conditions (temperature, type of hydrocarbon) during samples preparation. A core-shell model of the investigated samples allowed rough estimation of appropriate shell sizes. © Versita Sp. z o.o.
Συγγραφείς:
Bobrowska, M.
Typek, J.
Zolnierkiewicz, G.
Wardal, K.
Guskos, N.
Pelech, I.
Podsiadly, M.
Narkiewicz, U.
Περιοδικό:
Central European Journal of Chemistry
DOI:
10.2478/s11532-012-0123-1
