Selective Oxidation of Amorphous Carbon by CO2 to Produce Fe@C Nanoparticles from Bulky Fe/C Matrices

AUTOR(ES)

Mendonça, Fernanda G., Ardisson, José D., Lago, Rochel M., Tristão, Juliana C.

FONTE

J. Braz. Chem. Soc.

DATA DE PUBLICAÇÃO

2015-11

RESUMO

In this work, a bulky Fe0/carbon matrix obtained by a low cost and simple reduction/carbonization of Fe3+ salt with sucrose was treated with CO2 to selectively oxidize the amorphous carbon to release the graphite like carbon coated magnetic Fe0 particles. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman, X-ray diffraction (XRD), BET, thermogravimetric analysis (TG) (in CO2) and particle size analyses showed that the treatment with CO2 of the Fe/carbon bulky composite led to the selective oxidation of the more amorphous carbon with the formation of 125-132 nm Fe@C nanoparticles with surface areas of 217 m2 g−1.

Documentos Relacionados

• Gold Supported on Strontium Surface-Enriched CoFe2O4 Nanoparticles: a Strategy for the Selective Oxidation of Benzyl Alcohol
• Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
• Accessing Basic Sites on Modified CoFe2O4 Nanoparticles: Addressing the Selective Oxidation of Benzyl Alcohol and Unraveling the Au:Pd Ratio Effects by XPS
• Is Transfer of CO2 to C3-Plants Purely by Diffusion?
• CO Oxidation Catalyzed by Ag Nanoparticles Supported on SnO/CeO2