CAJ | 학술논문

利用共沉淀法制备 Fe3 O4磁性纳米颗粒,并与纳米树形高分子结合,最终形成具有磁性的树形高分子复合材料(MNP-Gn ,n 为树形高分子的分子代).采用氮气等温吸附-脱附比表面积及孔径测定仪对MN P-G n 的比表面积及孔隙体积进行了测试,采用VSM、EDS 和 XRD 等设备对 MNP-Gn 的磁性、元素组成和晶型结构进行了表征分析.结果表明,该复合材料中含有 Fe3 O4,具有磁性,可以通过外加磁场将MNP-Gn 吸附剂高效回收.由正交实验可知,在 p H值、温度、染料浓度和吸附剂添加量4个影响吸附量的因素中,pH 值的影响性显著,其次是温度的影响较大,同时得出最佳的吸附条件为pH 值为5,温度为25℃,染料浓度为30 mg/L,吸附剂添加量为0．8 g/L.
이용공침정법제비 Fe3 O4자성납미과립,병여납미수형고분자결합,최종형성구유자성적수형고분자복합재료(MNP-Gn ,n 위수형고분자적분자대).채용담기등온흡부-탈부비표면적급공경측정의대MN P-G n 적비표면적급공극체적진행료측시,채용VSM、EDS 화 XRD 등설비대 MNP-Gn 적자성、원소조성화정형결구진행료표정분석.결과표명,해복합재료중함유 Fe3 O4,구유자성,가이통과외가자장장MNP-Gn 흡부제고효회수.유정교실험가지,재 p H치、온도、염료농도화흡부제첨가량4개영향흡부량적인소중,pH 치적영향성현저,기차시온도적영향교대,동시득출최가적흡부조건위pH 치위5,온도위25℃,염료농도위30 mg/L,흡부제첨가량위0．8 g/L.
In this research,coprecipitation method was adopted to prepare Fe3 O4 .Then dendrimer was used to modify Fe3 O4 and formed magnetic polymer composite (MNP-Gn ,n for the generation of dendrimer).The spe-cific surface area and pore volume were tested by N2 adsorption/desorption analyzer.The magnetic properties, the elementary composition and the crystal structure were characterized by VSM,EDS and XRD.The results showed that the material was magnetic and composed by Fe3 O4 ,and it can be reused by applying magnetic fields.Through orthogonally designed experiments,the optimal adsorption conditions of dendrimer modified magnetic nanoparticles for RBk5 dyes were obtained,which correspond to pH of 5,adsorption temperature of 25,the dye concentration of 30 mg/L,adsorbent dosage of 0.8 g/L.