Pereira Angela S, Silva Nuno J O, Trindade Tito, Pereira Sergio
Chemistry Department and CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
J Nanosci Nanotechnol. 2012 Dec;12(12):8963-8. doi: 10.1166/jnn.2012.6700.
We report a general method for the synthesis of metal oxide colloidal nanocrystals in sunflower oil using single-source precursors. In this research, iron oxide nanocrystals have been synthesized and characterized though this method can be extended to the synthesis of other common metal oxides such as ZnO and also to other types of vegetable oils as solvents. Using this method, nanoparticles with average diameters of 7 nm and 3 nm were obtained respectively for iron oxide and zinc oxide. The magnetic iron oxide phase was identified using powder XRD, surface enhanced Raman spectroscopy and magnetic measurements as maghemite as the main component. The magnetic measurements demonstrate the superparamagnetic behavior of the iron oxide nanoparticles. This synthetic approach is an interesting way to synthesize metal oxide nanocrystals in eco-friendly solvents of natural origin.
我们报道了一种使用单源前驱体在葵花籽油中合成金属氧化物胶体纳米晶体的通用方法。在本研究中，已通过该方法合成并表征了氧化铁纳米晶体，不过该方法可扩展至合成其他常见金属氧化物（如ZnO），也可扩展至使用其他类型植物油作为溶剂。使用该方法，分别获得了平均直径为7 nm的氧化铁纳米颗粒和3 nm的氧化锌纳米颗粒。通过粉末XRD、表面增强拉曼光谱和磁性测量确定磁性氧化铁相的主要成分是磁赤铁矿。磁性测量证明了氧化铁纳米颗粒的超顺磁行为。这种合成方法是在天然来源的环保溶剂中合成金属氧化物纳米晶体的一种有趣方式。
