摘要
在已有的无机/有机复合纳米粒子制备的基础上,以Fe(NO_3)_3·9H_2O和FeSO_4·7H_2O混合均匀作为母盐溶液,氨水溶液作为沉淀剂,在无需通氮气保护的空气条件下采用化学共沉淀法制备Fe_3O_4磁性粒子,将其制备成Massart磁性液体,熟化后通过原位聚合完成铁氧体-聚苯胺复合材料的制备,并用羧甲基壳聚糖掺杂,制备羧甲基壳聚糖掺杂聚苯氨基碳包覆磁性纳米材料。通过用SEM、红外对其进行了表征,该磁性纳米复合呈片状,平均粒径约15 nm。
Based on the existing inorganic / organic composite nano-particles preparation theory, Fe（NO_3）_3·9H_2O and FeSO_4·7H_2O as a parent mixed salt solution were used with aqueous ammonia solution as a precipitating agent to prepare Fe_3O_4 magnetic particles by chemical coprecipitation in the air without nitrogen protection conditions. And then a magnetic liquid was prepared by using Massart method. After curing done, ferrite- polyaniline composites were prepared by in-situ polymerization. Finally, the carboxymethyl chitosan was doped with ferrite- polyaniline composites to produce carbon-coated magnetic nanomaterials. By using SEM, infrared spectroscopy and XRD, the composites were characterized. The average particle size of magnetic nanocomposite with plate shape is about 15 nm.
基金
国家自然科学基金项目(No.51273089)
关键词
铁氧体
聚苯胺
羧甲基壳聚糖
共沉淀
ferrite
polyaniline
carboxymethyl chitosan
coprecipitation
