CAJ | 학술논문

以苯甲醇为单一溶剂,通过常压、高温热解乙酰丙酮铁,制备了尺寸单分散的四氧化三铁磁性纳米粒子.采用透射电镜(TEM),X射线衍射(XRD),动态光散射(DLS)等方法对粒子形貌和结构进行了表征.利用傅里叶变换红外(FT-IR)光谱和热重分析(TGA)研究了所制备纳米粒子的表面化学,结果表明稳定四氧化三铁粒子的是苯甲酸分子,且表面覆盖度小于20%.所制备的磁性纳米粒子可以在室温下方便地进行表面配体交换,从而为氧化铁磁性纳米粒子的功能化提供新的途径.
이분갑순위단일용제,통과상압、고온열해을선병동철,제비료척촌단분산적사양화삼철자성납미입자.채용투사전경(TEM),X사선연사(XRD),동태광산사(DLS)등방법대입자형모화결구진행료표정.이용부리협변환홍외(FT-IR)광보화열중분석(TGA)연구료소제비납미입자적표면화학,결과표명은정사양화삼철입자적시분갑산분자,차표면복개도소우20%.소제비적자성납미입자가이재실온하방편지진행표면배체교환,종이위양화철자성납미입자적공능화제공신적도경.
Iron oxide magnetic nanoparticles with a narrow size distribution were prepared by thermal decomposition of iron (Ⅲ) acetylacetonate using benzyl alcohol as the only solvent The structure and morphology of the as-prepared nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and dynamic light scattering (DLS). Fourier transform infrared (FT-IR) spectroscopy and thermal gravimetric analysis (TGA) were used to study the surface chemistry of the particles, and it was found that the nanoparticles were stabilized by benzoic acid molecules with less than 20% monolayer coverage. At room temperature, the surface ligands can easily exchange for other molecules. This method will facilitate the functionalization and application of iron oxide magnetic nanoparticles.