超声波低温共沉淀法制备纳米Fe3O4

Preparation for Nanometer Material Fe3O4 by Coprecipitation Method with Supsersonic Wave in Low Temperature

以FeCl2、FeCl3为原料，在低温环境下，采用超声波辅助并结合共沉淀法制备了纳米Fe3O4。考察了Fe3＋：Fe2＋摩尔比、超声震荡时间、pH值、晶化温度、晶化时间5个因素对制备纳米Fe3O4的影响。确定制备纳米Fe304了的最佳方案为A383C4D2E3，即n（Fe3＋）：n（Fe2＋）=1：3、超声震荡15min、pH=12、晶化温度30℃、晶化时间2h。

This paper makes use of coprecipitation method with the assistance of supersonic wave and the raw materials as FeCl2 and FeCl3 to prepare Nanometer Material Fe3O4 in low temperature. The five factors, Fe3＋：Fe2＋ mole ratio, supersonic oscillation time, pH value, crystallization temperature and crystallization time, are investigated. The finding is that the best plan to prepare for Fe3O4 is A3B3C4D2E3, namely n（ Fe3＋）：n（ Fe2＋）=1：3, supersonic concussion 15 min, pH= 12, crystallization temperature 30℃, crystallization time 2h.