中文摘要：

采用2种方法制备了α-Fe2O3样品,利用XRD,SEM,HRTEM,ED和BET等手段进行了表征.结果表明：2个样品的颗粒大小、晶化度和表面状态不同.研究了2个样品对偶氮染料酸性媒介黄10的吸附、降解以及催化分解双氧水过程.结果表明：α-Fe2O3微粒的吸附、降解和催化效率并非与其比表面积成正比,而是取决于其表面晶化程度.

英文摘要：

a-Fe2O3 nanoparticles were prepared by two methods. The products were characterized by XRD, SEM, HRTEM, ED and BET. The results showed that the particle size, crystallinity and surface state were different for the two samples. The two samples were used to adsorb and degrade azo dye Mordant Yellow 10,and to catalyze the decomposition of H2O2. The obtained data indicated that the catalytic efficiency of a-Fe2O3 was determined by the crystallinity of the particles rather than their surface area.