纳米级铁酸锰制备、表征及对Cr(Ⅵ)的吸附作用  

Preparation and Characterization of Nanosized MnFe_2O_4 Particles and Its Adsorption for Cr(Ⅵ)

作　　者：李献锐[1] 王娜[1] 焦留国[1] 朱梅英[1] 

机构地区：[1]河北医科大学基础医学院,河北石家庄050017

出　　处：《河北师范大学学报（自然科学版）》2013年第6期614-617,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(B2006000130);河北省科学技术研究及发展计划(06213010)

摘　　要：以无定形的δ-FeOOH为前驱物,利用沸腾回流法制备了纳米级铁酸锰粉体.利用TEM,XRD及VSM等手段对产物的形貌、谱学性质、磁学性质进行了研究.结果表明：该方法制备的铁酸锰为球形颗粒,粒径为30～60 nm,具有较强的磁性,该纳米铁酸锰对水中6价铬有较好的吸附作用,可通过磁分离处理含铬废水.Nanosized MnFe2O4 particles were prepared by using amorphous 8-FeOOH as a precursor. Structure and magnetic properties of the samples were investigated by XRD, TEM and VSM. It is found that the size of as-prepared manganese ferrite particles varies from 30 to 60 nm. The as-prepared manganese ferrite particles have selective adsorption for Cr（Ⅳ） ions in wastewater. Based on the strong magnetism, the manganese ferrite particles adsorbed Cr（Ⅳ） ions can be easily separated from the solution.

关 键 词：δ-FeOOH 纳米铁酸锰 结构和磁学性质 Cr(Ⅵ) 吸附 

分 类 号：TQ137.1[化学工程—无机化工]