采用炭吸附沉淀法制备铁酸铋（BiFeO₃）纳米粉体，通过TG-DTA、XRD、UV-Vis、TEM等仪器分析其结构和性能。在1 000 W镝灯的照射下，以降解甲基橙（MO）为探针反应考察其光催化性能。结果显示，活性炭在铁酸铋粉体制备过程中有效抑制了团聚和烧结现象。煅烧温度为500℃下制备的铁酸铋粉体的晶化程度高、颗粒分布均匀、粒径小，在120 min内对甲基橙的降解率可达91.2%。

BiFeO₃ nano powders are prepared through carbon adsorption co-precipitation method, and their structure and properties are characterized by means of thermogravimetric analyzer, X-ray diffractometer, UV-Vis spectrophotometer and transmission electron microscope.The photocatalytic properties of BiFeO₃ nano powders are also evaluated with the degradation of methyl orange as the probe reaction under the irradiation of a 1, 000 W dysprosium lamp.It is shown that activated carbon has effectively suppressed the agglomeration and sintering phenomena during the preparation of BiFeO₃ powder.BiFeO₃ powder calcined at 500℃ shows high crystallinity, uniform particle distribution and small particle size, over which the degradation rate of methyl orange can reach 91.2% within 120 min.

黄强(1996-),男,硕士生,研究方向为光催化降解有机污染物,150247248738@163.com