摘要
利用表面修饰法合成了表面为油酸所修饰的PbO纳米微粒 ,并用红外光谱、X -射线光电子能谱、透射电子显微镜和热分析仪对产物的结构、形貌及化学状态及热稳定性进行了研究 .结果表明 :所制备的PbO纳米微粒大小均匀 ,粒径约为 5nm ,在有机溶剂及石蜡油中的分散性良好 ;表面修饰剂与纳米微粒表面之间发生化学键合作用 ,这使得PbO纳米微粒在有机溶剂及基础油中的分散性得以改善 。
Oleic acid (OA) capped PbO nanoparticles have been chemically prepared and characterized by means of infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). Results show that OA capped PbO nanoparticles, with average diameter of about 5 nm, are able to prevent water adsorption and are capable of being dispersed stably in organic solvents and lubricating oils. Thermal stability of OA coating on PbO nanoparticles is superior to that of OA alone.
出处
《化学研究》
CAS
2002年第3期5-8,共4页
Chemical Research
基金
国家杰出青年科学基金资助项目 (5 982 5 116)
