纳米棒
化学
溶解
棒
抗坏血酸
降水
化学工程
纵横比(航空)
纳米技术
球体
血小板
纳米结构
有机化学
复合材料
材料科学
医学
替代医学
食品科学
物理
病理
天文
气象学
工程类
免疫学
生物
作者
Bishnu P. Khanal,Eugene R. Zubarev
摘要
Because physical and chemical properties of nanostructures strongly depend on their shape, it is of great importance to find either synthetic or separation techniques that can produce objects of a particular shape in a pure state. This manuscript describes a solution to a long standing problem of separating 2D platelets from 1D nanorods. The key aspect of our approach relies on the partial dissolution of faceted platelets with Au(III)/CTAB complex that transforms them into smaller nanodisks. Because of the reduction in size, the 2D structures become fully soluble in water and can be separated from the nanorods that undergo slow precipitation. In addition, the isolated nanodisks can be converted back into initial faceted platelets upon treatment with Au(I)/ascorbic acid mixture. As a result of these simple procedures, a seemingly inseparable mixture of rods, platelets, and spheres is converted into nearly pure individual components.
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