This paper demonstrates a novel and green approach for the synthesis of Fe3O4 nanoparticles using the leaf extract of Artemisia annua (A. annua), which is widely distributed in Asia as a medicinal plant. The formation of Fe3O4 nanoparticles was observed by UV-Vis spectroscopy. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared (FT-IR) spectroscopy, vibrating sample magnetometry (VSM), and thermogravimetric analysis (TGA). TEM analysis of Fe3O4 nanoparticles showed that they were spherical in shape with an average size of 6 nm. The synthesized Fe3O4 nanoparticles were used as a catalyst for the preparation of biologically interesting benzoxazinone and benzthioxazinone derivatives in high yields. These results showed that the synthesized Fe3O4 nanoparticles could be used as a catalyst in organic synthesis.
本文展示了一种利用广泛分布于亚洲的药用植物黄花蒿(A. annua)的叶
提取物合成
Fe3O4 纳米粒子的新型绿色方法。通过紫外可见光谱观察了 纳米粒子的形成。通过 X 射线衍射 (XRD)、透射电子显微镜 (
TEM)、能量色散 X 射线分析 (E
DAX)、傅立叶变换红外光谱 (FT-IR)、振动样品磁力计 (VSM) 和热重分析 (TGA) 对合成的纳米粒子进行了表征。对 纳米粒子的
TEM 分析表明,它们呈球形,平均尺寸为 6 纳米。合成的 纳米粒子被用作催化剂,用于制备具有
生物活性的苯并恶嗪酮和苯并恶嗪酮衍
生物,产量很高。这些结果表明,合成的 纳米粒子可用作有机合成催化剂。