本文以FeSO4为原料,添加微量EDTA可见光诱导,空气氧化Fe(OH)2?:悬浮液,室温(20 ℃)制备了γ-FeOOH,探讨了各种因素对产物的影响.结果表明:用NaOH作沉淀剂,pH值为8.6,在EDTA作用下可见光诱导有利于低晶γ-FeOOH的生成;pH值在8.0～8.6范围内,随pH值的降低,产物γ-FeOOH的晶化度逐渐提高;用NH3·H2O作沉淀剂,可得到粒径较大的筏状γ-FeOOH.
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