摘要
本文利用金属活泼性Cu>Ag>Au的顺序,首先以Cu还原AgNO_3得到羽毛状银颗粒,再以Ag置换氯金酸得到羽毛状Au-Ag双金属纳米材料。采用扫描电镜观察纳米颗粒的形貌,用能谱分析其组成。探讨了这种合成方法的特点,对合成的两个影响因素,即温度和氯金酸的用量进行了研究,20-170℃范围内温度升高金含量增加,低温时<2%。170℃时随氯金酸用量增加金的含量增加。
Feather-like Au-Ag bimetallic nanomaterials were obtained by the reduction of AgNO3from Cu by Ag-Cu-Ag>Au.The morphology of the nanoparticles was observed by scanning electron microscopy(SEM),and the composition of the nanoparticles was analyzed by energy spectrum.The factors influencing the synthesis of the two factors,namely,the temperature and the amount of chloroauric acid,were studied.The Au contant increases as the temperature increases in the range of20-170℃.The Au content was less than2%at lower temperature.Au content increases with the amount of chloroauric acid at170℃.
作者
石嘉骏
SHI Jia-jun(Nanjing No.9 Middle School ,Nanjing Jiangsu 210019,China)
出处
《科技视界》
2017年第23期108-109,共2页
Science & Technology Vision
