作者：KAZUHIRO HONDA;YASURO IKLMA;

作者单位：

刊名：Journal of the Technical Association of Refractories

ISSN：0285-0028

出版年：2007-01-05

卷：27

期：4

起页：241

止页：247

分类号：TQ175

语种：英文

关键词：

内容简介

When glycerin containing either AgNO_3 or CuSO_4 centre dot 5H_2O was exposed to a 2.45 GHz microwave power source, the glycerin acted as a reducing agent and fine Ag or Cu particles were formed within short time. If there was no surface chemical modifier, Ag particles of about 100 run and Cu particles of about 140 nm were formed. On the other hand, if AOT was present as a surface chemical modifier, (AOT is a cheap surfactant), the metal particles formed were smaller in size with a narrower size distribution. This result suggests that it is possible to form highly monodisperse noble metal particles in this way. It is expected that the demand for noble metal particles will increase in the future. Therefore, the synthesis of these particles using microwave processing would increase. At present, we are studying how to deposit dense silver agglomerates on a glass substrate. If we could deposit a small silver film with a specified shape in a defined space on a substrate without using a mask, the technique could then be used to form an electric circuit or an electrode on a microchip. If we could collect and reclaim the glycerin that vaporized during the microwave exposure, a rapid and environmentally friendly method to form noble metal particles by microwave irradiation would be possible. This synthesis method is expected to develop as a "Green Chemistry" technique.