摘要
在乙醇-水体系中,碱性条件和CTAB的存在下,以硼氢化钠为还原剂,硝酸铜为铜源,制备了铜纳米颗粒的水溶胶;然后以S-十二烷-N-二硫代氨基甲酸酯-聚丙烯酰胺(PAMDTCD)为修饰剂和相转移剂,将铜纳米颗粒从水相转移到油相中.利用FTIR,TEM,XPS和XRD对所得的铜纳米颗粒进行了表征.结果表明,PAMDTCD能在铜纳米颗粒表面形成紧密的吸附层,有助于提高铜纳米颗粒的稳定性和分散性.
Copper hydrosol were prepared from the solution of copper nitrate with NaBH4 by reductive reaction in water and ethanol-water system in the presence of NaOH and CTAB, and the copper hydrosol were transferred into organic phase by the addition of PAMDTCD. FTIR, TEM, XPS and XRD were utilized to in- vestigate the structure and stability of copper nanoparticles modified with PAMDTCD. The results showed that the modified copper nanoparticles are stable in ambient conditions, which is attributed to the protection of the PAMDTCD molecular densely packed on the copper surface.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第4期388-391,共4页
Journal of Yunnan University(Natural Sciences Edition)
基金
甘肃省自然科学基金资助项目(0710RJZA074)
甘肃省教育厅科研资助项目(0711B-04)
关键词
纳米颗粒
铜
聚丙烯酰胺
nanopar ticles
copper
polyacrylamide
