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Characterizations of Carbon Nanospheres Prepared by Deposition Precipitation of Fe-Catalyst onto Activated Carbon Support
Carbon nanospheres (CNSs) are known as byproduct of carbon nanotubes synthesis. They are spherical in shape and
range in size from roughly 50 nm to 1 μm and depending on the preparation method and raw carbon precursors, they
may be hollow or solid core. Applications of CNSs under investigation include use as electrodes in supercapacitors or
lithium batteries and catalyst support. In this study, CNSs were synthesized by pyrolysis process. Fe was used as
catalyst, activated carbon as support, and palm oil was used as carbon precursors for CNSs growth. Prior to the
synthesis of CNSs, Fe-catalyst on carbon supports was prepared by deposition precipitation by varying the amount of
catalyst (10%, 20% and 30% wt with respect to the mass of carbon support). The effect of catalyst amount on the
morphology and structural characteristics of carbon products was investigated by x-ray diffraction (XRD), BET
surface area analysis and scanning electron microscope (SEM). Dense CNSs with turbostratic structures have been
produced by pyrolyzing palm oil onto the activated carbon support under nitrogen atmosphere.
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