在不同保护剂存在下合成纳米银线(粒子)

Synthesis of Silver Nanowires (Particles) in the Presence of Different Protective Agents

常温常压下、在水溶液中,在PVP、PEG、PVA、P123、吐温等不同的保护剂存在下,用二苯胺磺酸钠(DPAS)还原AgNO3(SN),制备了纳米银线(粒子),并且用X-射线衍射(XRD),扫描电镜(SEM),透射电镜(TEM)和紫外-可见光谱等手段对产物进行了表征。纳米银线(粒子)的形态特征和大小可以通过改变反应物浓度,保护剂品种、用量等条件来控制。对纳米银线的生长机理也进行了探讨。

Silver nanowires and nanoparticles were prepared by the redox reaction between silver nitrate（SN） and sodium diphenylamine sulfonate（DPAS） in the presence of different protective agents（such as PVP,PEG,PVA,P123,Tween and so on）at room temperature and normal pressure.The products were characterized by using XRD,SEM,TEM and UV-Vis.The morphological characteristics and size of silver-nanowires can be controlled by systematically adjusting the reaction parameter,such as the concentrations of the reagent and the kind and the dosage of protective agents.The mechanism of the growth of silver-nanowires was discussed.