Polyol法制备PEO-PPO-PEO包裹的多功能CoFeAu纳米粒子(英文)

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0.406nm、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.

Synthesis of PEO-PPO-PEO coated multi-functional CoFeAu nanoparticles by polyol process

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 H29 CH（OH）CH2 OH 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.