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报道了一种温和的、低成本、有效制备高纯度单分散金纳米棒的新方法。采用种子生长法,在两种表面活性剂体系下液相合成金纳米棒,向粗产品中加入氯化钠溶液,通过提高反应液的离子强度,利用制备的金纳米棒与球形颗粒不同的静电作用将金纳米棒分离纯化。运用透射电子显微镜(TEM)和扫描电子显微镜(SEM)对金纳米棒的表面形貌进行表征。结果表明,在较短时间内可获得纯度达97%以上的金纳米棒,并初步探讨了提纯机理。
A new method for preparing high purity monodispersed gold nanorods is reported. Using the method of seed growth, the gold nanorods are synthesized in liquid phase under the two surfactant systems, sodium chloride solution is added to the crude product, the ionic strength of the reaction liquid is increased, the static electricity of the gold nanorods prepared is different from that of the spherical particles The role of gold nanorods separation and purification. The surface morphology of gold nanorods was characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The results show that gold nanorods with the purity of more than 97% can be obtained in a short period of time, and the mechanism of purification is discussed.