CTAB-assisted synthesis of mesoporous CoFe2O4 with high carbon monoxide oxidation activity

• Published in: Materials letters 2013-09, Vol.106, p.322-325
• Main Authors: Cao, Jian-Liang, Yan, Zhao-Li, Wang, Yan, Sun, Guang, Wang, Xiao-Dong, Bala, Hari, Zhang, Zhan-Ying
• Format: Article
• Language: English
• Subjects: Carbon monoxide; cobalt; CoFe2O4; Fourier transform infrared spectroscopy; Nanomaterials; Nanoparticles; Oxidation; Porosity; Porous materials; Surface area; Transmission electron microscopy; X-ray diffraction
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2013.05.054

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. •Mesoporous CoFe2O4 nanoparticles were prepared via the CTAB-assisted method at normal pressure.•Small grain size and mesoporous structure lead to the good catalytic property.•The mesoporous CoFe2O4 nanoparticles exhibit a high activity for CO oxidation.