LI Hua ¹ ,LIANG Jian ² ,XIAO Guoxian ¹

(1. Department of Inorganic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215021; 2. Jingdezhen Ceramic Institute, Jingdezhen 333001)

Abstract: Spherical aggregations of Fe₂O₃ nanoparticles with high surface area were synthesized by a simple route: drothermal treatment combined with template assistant. A complete morphological characterization of the sample was performed using XRD, TEM, and N₂ sorption isotherms. The resulted sample shows these well-dispersed aggregates are well-crystallized α-Fe₂O₃ with uniformed size around 40 nm in diameter, and each spherical aggregate was composed of hundreds of nanoparticles through which pores were formed. As high as 123.4 m²/g of surface area was achieved because huge pores existed. Besides, the conditions for the synthesis, including hydrothermal temperature and the concentration of CTAB, were also explored and discussed.

Keywords: spherical aggregates, nano-α- Fe₂O₃, hydro