Large-scale synthesis of single crystal silver nanowires by a sodium diphenylamine sulfonate reduction process.
Silver nanowires with high aspect ratios of up to more than 60 were synthesized on a large scale by the redox reaction between silver nitrate and sodium diphenylamine sulfonate at room temperature and in the absence of surfactant and hard-template and seed. When the molar ratio of reductant sodium diphenylamine sulfonate and silver nitrate < or =1, most products were all the nanowires. When the molar ratio increases to 2:1, silver nanowires and nanobelts were concomitantly formed. The redox product N, N'-diphenylbenzidinedisulfonate and sodium diphenylamine sulfonate all play an important role in the formation of silver nanostructures. The structure, morphology, and composition of the silver nanowires were characterized by the X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray energy dispersive microanalysis (EDX), and UV-Vis spectroscopy respectively. High-resolution transmission microscopy (HRTEM) and selected area electron diffraction (SAED) reveal the single-crystal nature of the silver nanowires.
State Key Laboratory of Coordination Chemistry and Laboratory of Solid State Microstructure, Nanjing University, Nanjing, Jiangsu 210093, PR China.
Qi
Q
Liu
Hongjiang
H
Liu
Jianmin
J
Zhu
Yongye
Y
Liang
Zheng
Z
Xu
Gui
G
Yin
Min
M
Han
D001557:Benzenesulfonates / Q000737:chemistry*; D003461:Crystallography; D004159:Diphenylamine / Q000031:analogs & derivatives* / Q000737:chemistry; D007202:Indicators and Reagents; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry; D010084:Oxidation-Reduction; D012834:Silver / Q000737:chemistry*; D012964:Sodium; D013053:Spectrophotometry; D014961:X-Ray Diffraction
D001557:Benzenesulfonates; D007202:Indicators and Reagents; D012834:Silver; C510648:sulfodiphenylamine; D004159:Diphenylamine; D012964:Sodium