乙二醇热还原法制备超高长径比银纳米线的工艺条件研究  

Process Conditions and Preparation Methods of Ultra-high Aspect Ratio Silver Nanowires by Ethylene Glycol Thermal Reduction

作　　者：范小力 徐习斌[2] 易早 罗江山[2] 温才[1] FAN Xiaoli;XU Xibin;YI Zao;LUO Jiangshan;WEN Cai(School of Science,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China)

机构地区：[1]西南科技大学理学院,四川绵阳621010 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《西南科技大学学报》2021年第4期18-24,91,共8页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金(11604311);四川省科技厅项目(2020YFG0467)。

摘　　要：采用乙二醇热还原法制备银纳米线,研究了溶液除氧、控制剂类型、反应时间和反应温度对其长径比的影响。结果表明:通过增加溶液除氧操作和引入三氯化铁控制剂,可以保护银孪晶不受O_(2)/Cl^(-)协同作用的刻蚀,大幅提高银纳米线的长度和纯度;在合适的反应时间和温度条件下获得了直径约100 nm、长度300~400μm、长径比达到3 000~4 000的超长银纳米线,为合成超高长径比银纳米线提供了一个简单高效的方案。Silver nanowires were prepared by ethylene glycol thermal reduction method. The effects of oxygen removal,type of control agent,reaction time and temperature on the aspect ratio of silver nanowires were studied. The results show that the crystal twins can be protected from the synergistic etching by O_(2)/Cl^(-)and the length and purity of silver nanowires can be greatly improved by increasing the operation of solution deaeration and introducing ferric chloride control agent. The ultra long silver nanowires with a diameter of about 100 nm,a length of 300-400 μm and aspect ratio of 3 000-4 000 are obtained under suitable reaction time and temperature. The work in this paper will provide a simple and efficient method for the synthesis of ultra-high aspect ratio silver nanowires.

关 键 词：银纳米线 乙二醇热还原法 控制剂 脱氧处理 

分 类 号：TM241.1[一般工业技术—材料科学与工程]