Novel preparation of silver-coated copper in aqueous solution
发布时间：2024-08-09
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- 所属单位：
- 化学与化工学院
- 发表刊物：
- Materials Science Forum,
- 关键字：
- 中文关键字：铜，英文关键字：Copper particles; Silver-coated; Deposition proces
- 摘要：
- Hollow and solid spherical silver-coated copper powders with size of 1μm were facilely prepared by the reduction of silver nitrate in the polyvinyl pyrrolidone (PVP) dispersed copper hydrosol solution at room temperature in the presence of hydrazine hydrate. Scanning electron microscopy and X-ray diffraction were conducted to investigate the formation process of silver-coated copper core-shell particles. The results showed that the absorption and deposition of the Ag nuclei initially occurred at the active sites on the core surfaces as seeds which urged the further deposition of silver species to form sprinkled-structure core-shell particles. During the growth of the silver shell, the dissolution of copper core would result in the formation of hollow spherical particles, while the hydrazine hydrate would help to generate the solid spherical silver-coated copper powders.
- 备注：
- 宋永辉
- 第一作者：
- 兰新哲,宋永辉
- 论文类型：
- 期刊论文
- 卷号：
- 卷：658
- 期号：
- 期：
- 页面范围：
- 页：173-176
- 是否译文：
- 否
- 发表时间：
- 2010-07-01
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