Method of Preparing Nanostructured Single Crystal Silver

摘要

A method of preparing nanostructured single crystal silver, comprising placing a high-conductive molded porous active carbon containing chloride ions, which has been reductively treated, into a silver-containing precursor solution. After several hours at room temperature, the nanostructured single crystal silver grows on the surface of the active carbon. The silver-containing precursors and appropriate amount of chlorine provide a crystal nucleus and a slow stable crystal growth environment which are required for single crystal silver growth, and said nanostructured silver single crystals could be obtained with various morphologies by controlling the concentration of the silver-containing precursor solution and the growth time. The method of the invention is an environmentally friendly synthesis method with the nanostructured single crystal silver grows on the surface of the molded porous active carbon at room temperature, which is pollution-free and does not need any additives; the single crystal could be obtained in high yield and high purity, and can be separated from the molded porous active carbon easily, the grown silver falls off naturally and the active carbon is renewable through sonication with absolute ethanol or alkaline solutions; and the obtained single crystal silver is characterized by having high mechanical strength, good conductivity and less crystal defects.