Polyol法制备 PEO-PPO-PEO包裹的多功能CoFeAu纳米粒子

摘要

采用Polyol合成法，以三嵌段共聚物PEO-PPO-PEO为表面活性剂，以1，2-十六烷二醇为还原剂，乙酰丙酮钴（Ⅱ）、乙酰丙酮铁（Ⅱ）和醋酸金为前驱体，成功合成了CoFeAu纳米粒子．傅立叶变换红外光谱（FT-IR）分析证实了共聚物PEO-PPO-PEO包裹在CoFeAu纳米颗粒表面，X射线衍射仪（XRD）测试得出该纳米粒子是面心立方晶体结构、晶格参数为0．406 nm、结晶性能好．紫外可见近红外分光光度计吸收光谱仪和振动样品磁强计（VSM ）测试证明了该纳米粒子兼具良好的光学和磁学特性．该多功能CoFeAu纳米粒子有望在催化材料、磁材料、光电和生物医药等方面发挥有益作用．%CoFeAu nanoparticles were successfully synthesized by polyol process with the use of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) as the sur-factant ,C14 H29CH(OH)CH2OH as the reducing agent ,cobalt acetylacetonate ,iron acetylacet-onate and gold acetate as precursors .The FT-IR study confirmed the PEO-PPO-PEO molecules on the surface of the CoFeAu nanoparticles .The X-ray diffraction identified the crystallograph-ic parameter 0 .406 nm of the face-centered cubic structure and showed the nanoparticles have good crystallinity .Whereas a UV-Vis near IR spectrophotometer and a vibrating sample mag-netometer were respectively applied to prove the good optical and magnetic properties of the CoFeAu nanoparticles .Such multi-functional CoFeAu nanoparticles show promising applica-tions in the catalytic ,magnetic ,photoelectric and biomedical fields .