Structural features and magnetic property of nano-sized transition metal dispersed carbons from naphthalene by pressure

Thermolysis of fullerene iron and ruthenium complexes (buckymetallocene M(C(60)R(5))Cp (M = Fe; R = Ph (1) and Me (2), M = Ru; R = Ph (3), Me (4)) under a nitrogen atmosphere produced metal nanoparticles dispersed in carbon materials. The thermal degradation processes of the buckymetallocenes were studied by TG-DTA, TEM with a heating sample stage, and VT-XRD. Variation of the thermolysis temperature led to a change in the size of the nanoparticles and the morphology of the carbon materials. Thermolysis of buckyferrocene at 700 degrees C gave highly dispersed iron nanoparticles (average diameter of 7.4 nm). After thermal treatment at 900 degrees C, graphite structures such as carbon nanocapsules and carbon nanotubes formed because of the catalytic activity of the iron nanoparticles. Ruthenium nanoparticles prepared from buckyruthenocene were much smaller than the iron counterparts, and did not catalyze the formation of graphite structures. When buckyruthenocene absorbed on silica gel was heated at 500 degrees C under a hydrogen atmosphere, the resulting ruthenium nanoparticles showed high activity in catalytic hydrogenation.

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Iron and Ruthenium Nanoparticles in Carbon Prepared by Thermolysis of Buckymetallocenes

Nakae

Takagi

Sato

et al. 2009

Chemistry An Asian Journal

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Preparation of γ-Fe2O3 nanopowders by direct thermal decomposition of Fe-urea complex: reaction mechanism and magnetic properties

Zhao

Song

et al. 2009

J Mater Sci

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Supercritical hydrothermal synthesis of metallic cobalt nanoparticles and its thermodynamic analysis

Seong

Takami

Arita

et al. 2011

The Journal of Supercritical Fluids

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Structural features and magnetic property of nano-sized transition metal dispersed carbons from naphthalene by pressure

Cited by 3 publications

References 21 publications

Iron and Ruthenium Nanoparticles in Carbon Prepared by Thermolysis of Buckymetallocenes

Iron and Ruthenium Nanoparticles in Carbon Prepared by Thermolysis of Buckymetallocenes

Preparation of γ-Fe2O3 nanopowders by direct thermal decomposition of Fe-urea complex: reaction mechanism and magnetic properties

Supercritical hydrothermal synthesis of metallic cobalt nanoparticles and its thermodynamic analysis

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