Characteristic of silver nanowires prepared by polyol method based on orthogonal experimental design

In this study, silver nanowires (AgNWs) were prepared by the polyol method using silver nitrate (AgNO3) as the silver source and polyvinylpyrrolidone (PVP) as the structure-directing agent under different reaction conditions. In order to obtain AgNWs with good uniformity and electrical conductivity, the orthogonal experiment method was adopted to design an experimental scheme. The scanning electron microscope, energy-dispersive X-ray spectrometer, X-ray diffraction, UV-2550 UV–Visible spectrophotometer, transmission electron microscope, Fourier transform infrared and Raman spectra were combined to characterize synthesized AgNWs. It can be concluded from experimental data that when the reaction temperature is 150°C, the ratio of AgNO3 to PVP is 1:3, the drop rate of PVP is 65 ml h–1, with the existence of ferric chloride (FeCl3), and the AgNWs exhibit optimal morphology with the diameter ranging from 60 to 200 nm. The results in this study will provide experimental guide for controllable formation of AgNWs.