caa a22 4500 463223519 CHVBK 20180405153219.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10853-007-1825-1 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1825-1 Structural features and magnetic property of nano-sized transition metal dispersed carbons from naphthalene by pressure [Elektronische Daten] [Xiaohong Chen, Huaihe Song] The transition metal nanoparticle dispersed carbon materials were synthesized by co-carbonization of naphthalene with transition metal compounds, i.e., ferrocene, cobalt acetate and nickel acetate at 540°C for 6h under autogenous pressure. The morphologies, structural features and magnetic properties of these metal/carbon nanomaterials were compared by means of SEM, TEM, XRD and VSM measurements. It was found that, coalescent spherulites with uniform diameters from 2μm to 10μm were obtained via the co-carbonization of naphthalene and transition metal compounds. The metals mainly exist in the form of elementary metal particles with the size from several nanometers to 300nm. The Fe particles were encapsulated by carbon layers with well-ordered arrangement to form encapsualtion. Otherwise some of Ni species showed the nanorod morphology coating by carbon layers. The formation mechanisms of these metal/carbon nanomaterials were briefly discussed. The magnetization curves of these materials at room temperature exhibited the characteristics of superparamagnetism response. Springer Science+Business Media, LLC, 2007 Chen Xiaohong State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 34, 100029, Beijing, P.R. China aut Song Huaihe State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 34, 100029, Beijing, P.R. China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/20(2007-10-01), 8738-8744 0022-2461 42:20<8738 2007 42 10853 https://doi.org/10.1007/s10853-007-1825-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1825-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Xiaohong State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 34, 100029, Beijing, P.R. China aut NATIONALLICENCE 700 1- Song Huaihe State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 34, 100029, Beijing, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/20(2007-10-01), 8738-8744 0022-2461 42:20<8738 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer