Conditions for Synthesis of Uniform Ag Nanowires via Chemical Reduction Process

Silver nanowires（AgNWs） solution were synthesized from silver nitrate（AgNO₃） by chemical reduction method with poly（vinyl pyrrolidone,PVP K₃₀） as the surfactant-and ethylene glycol as reducing agent.The influence of the molar ratio between PVP and AgNO₃ and the concentration of AgNO₃ solution on the morphology of silver nanowires were studied.The morphologies of silve products were investigated using scanning electron microscopy（SEM） and transmission electron microscopy（TEM）.The structure of AgNWs were characterized using X-ray powder diffraction（XRD）.The results show that the high yield AgNWs have uniform wire-like shape and linear face-centered cubic（FCC） crystal structure under the temperature of 160℃,the concentration of AgNO₃ solution of 0.6M and the PVP/AgNO₃ molar ratio at 6.It has demonstrated chemical reduction method is excellent for generating AgNWs with diameter in the range of 60-100nm,and length of up to ～10μm.