Abstract
Mesoporous CoFe2O4 nanomaterials were successfully synthesized via the cetyltrimethylammonium bromide (CTAB)-assisted method at normal pressure. The structure and morphology of the as-prepared CoFe2O4 samples were characterized by XRD, TG-DTA, FT-IR, TEM and N2-sorption analysis. XRD studies indicated that the as-prepared product was well-crystallized spinel cobalt ferrite. The TEM image showed that the obtained CoFe2O4 sample consisted of nanoparticles with the size about 15nm. N2-sorption analysis indicated that the mesoporous CoFe2O4 possesses a wormhole-like mesoporous structure with a narrow pore size distribution and high surface area (94.3m2/g). The catalytic property of the as-prepared CoFe2O4 for low-temperature CO oxidation was evaluated by using a microreactor-GC system, and the result shows that it is very active for CO total oxidation at 140°C.
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