采用化学还原法，以聚乙烯砒咯烷酮(PVP)为稳定剂和形貌控制剂，乙二醇为还原剂，在 L-半胱氨酸诱导下，由硝酸银快速制备了银纳米线。采用紫外-可见吸收光谱、X射线衍射、扫描电子显微镜、选区电子衍射和透射电子显微镜手段对所得产物进行表征，结果表明利用L-半胱氨酸诱导可在15 min 内制备直径为100nm左右，长度约几百微米的银纳米线，并具有单晶结构，根据实验结果提出了可能的银纳米线快速合成机理。
Well-defined silver nanowires with uniform diameter and length were successfully and rapidly synthe-sized from silver nitrate by a typical chemical reduction method induced by L-cysteine using poly (vinyl pyrroli-done)(PVP)as the surfactant agent and ethylene glycol as reducing agent.The obtained specimen were inves-tigated by UV-visible absorption spectrum(UV),X-ray powder diffraction (XRD),scanning electron microsco-py (SEM),selected area electron diffraction (SAED),transmission electron microscopy (TEM)and high reso-lution transmission electron microscopy (HRTEM).The results indicated that silver nanowires with uniform diameter of about 100nm and length of several hundred micrometers could be successfully obtained within 1 5 min.The as synthesized silver nanowires showed single crystal structure.The possible rapid synthesis mech-anism induced by L-cysteine was also demonstrated according to the experiment results.
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