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以氯金酸(HAu Cl4)为前驱物,油胺同时作为溶剂、表面稳定剂和还原剂,通过简单的一步湿化学法合成超细金纳米线.制备出的超细金纳米线不仅产量高、纯度高,而且纵横比大,纳米线平均直径~2 nm,长度可达数十微米.如果添加另一种还原剂油酸并调节油胺和油酸的体积比为1:1,将生成直径为~9 nm的金纳米线.通过改变反应温度和还原剂用量,对该种超细金纳米结构的生长机制进行阐述说明:以油胺为模板,在油胺和一价金卤化物(Au Cl)亲金键合形成的一维聚合链作用下,被还原的金原子附着在已成核颗粒表面,一维地生长成超细金纳米线.
Using HAuCl4 as precursor, oleylamine can be used as a solvent, surface stabilizer and reductant to synthesize ultrafine gold nanowires by a simple one-step wet chemical method. The prepared ultrafine gold nanowires not only have high yield , High purity, large aspect ratio, average nanowire diameter ~ 2 nm, length up to tens of microns.If you add another reducing agent oleic acid and regulate the volume ratio of oily amine and oleic acid to 1: 1, will generate Au nanowires with a diameter of ~ 9 nm.The growth mechanism of this kind of ultrafine gold nanostructures was explained by changing the reaction temperature and the amount of reductant.Using oleylamine as a template in the presence of oleylamine and monovalent gold halides Au Cl), the reduced gold atoms attach to the surface of the nucleated particles and grow into one-dimensional ultrafine gold nanowires.