CAJ | 학술논문

采用CTAB作保护荆,在较低温度下,成功地制备出高分散度的Fe3O4纳米材料.通过改变反应条件和保护刺的种类,可在20～360nm范围内有效调控Fe3O4纳米颗粒的粒径.利用X射线衍射仪、透射电子显微镜和扫描电子显微镜等对样品的晶体结构、粒径、形貌和化学组成进行了分析.结果表明:所得Fe3O4纳米晶的粒径均匀,形貌为球形,分散度好.利用振动样品磁强计测量了室温下140nm粒径样品的磁性能.结果表明,Fe3O4纳米材料具有典型的软磁特性.
채용CTAB작보호형,재교저온도하,성공지제비출고분산도적Fe3O4납미재료.통과개변반응조건화보호자적충류,가재20～360nm범위내유효조공Fe3O4납미과립적립경.이용X사선연사의、투사전자현미경화소묘전자현미경등대양품적정체결구、립경、형모화화학조성진행료분석.결과표명:소득Fe3O4납미정적립경균균,형모위구형,분산도호.이용진동양품자강계측량료실온하140nm립경양품적자성능.결과표명,Fe3O4납미재료구유전형적연자특성.
High-dispersed Fe3O4 nanoparticles were successfully fabricated by using the surfactants of CTAB as protective reagents at lower temperature. The sizes of the nanoparticles can be varied from 20 to 360nm by ad-justing the experimental conditions and changing protecting agents. The structure, size and morphology of the products were investigated in detail by X-ray diffraction (XRD),transmission electron microscopy (TEM),and scanning electron microscopy (SEM). The results indicate that uniform Fe3O4 nanospheres were achieved. The magnetic properties of the 140nm sample was investigated with a vibrating sample magnetometer at room tem-perature and revealed that Fe3O4 nanomaterials are typical soft magnet.