{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"以常见的表面活性剂油酸钠作为表面改性剂, 通过油酸根离子中的脂肪烃链与高温油相法制备的Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子表面的亲油性基团之间的范德华力作用, 将分散在油相中的Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子转移到水相中. 研究了油酸钠浓度、油相中Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子含量、pH值及温度等条件对改性结果的影响; 用穆斯堡尔谱仪(Mossbauer)、透射电镜(TEM)、傅立叶红外光谱(FT-IR)等方法对改性前后的样品进行了表征. 结果表明: 本方法可有效地将油相法制备的Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子从油相中转移到水相. 当油酸钠浓度为3mmol/L、Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子在正己烷中浓度为12.28mg·mL<SUP>-1</SUP>、 pH为8.6且温度为60℃时, 转移率最高可达86％, 改性后粒子在水相中的含量最高可达10.5mg·mL<SUP>-1</SUP>; 改性后磁性粒子在水相中含量较低时, 能够稳定分散较长时间.","authors":[{"authorName":"<span style=\"color:red\">丁</span><span style=\"color:red\">建</span><span 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modification"}],"language":"zh","publisherId":"1000-324X_2007_5_1","title":"油酸钠对油相法制备的Fe<SUB>3</SUB>O<SUB>4</SUB>纳米粒子的表面改性研究","volume":"22","year":"2007"},{"abstractinfo":"核壳结构二氧化硅/磁性纳米粒子作为一种新型功能复合材料在生物医学方面有重要应用前景.综述了核壳结构二氧化硅/磁性纳米粒子的各种制备方法以及国内外在核壳结构二氧化硅/磁性纳米粒子制备方面的研究新进展,并对其在生物医学上的应用作了介绍.","authors":[{"authorName":"<span style=\"color:red\">丁</span><span style=\"color:red\">建</span><span 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