Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (04): 489-492.doi: 10.3866/PKU.WHXB20070407

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Preparation of Silver Nanowires in Ion-trackMembranes

YAO Hui-Jun; LIU Jie; DUAN Jing-Lai; HOU Ming-Dong; SUN You-Mei; MO Dan; CHEN Yan-Feng; XUE Zhi-Hao   

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2006-08-14 Revised:2006-11-07 Published:2007-04-05
  • Contact: LIU Jie

Abstract: Polycarbonate (PC) membranes were irradiated with swift heavy ions and latent tracks were created along the ions' trajectories. Nanopores, diameters between 100 and 500 nm, were obtained after illuminating the membranes with UV light and etching in NaOH solution. Silver nanowires were produced in the etched ion-track membranes by electrochemical deposition. The morphology and crystallinity of the silver nanowires were studied by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). Under certain conditions (deposition voltage 25 mV, current density 1-2 mA·cm-2, temperature 50 ℃, electrolyte 0.1 mol·L-1 AgNO3), single-crystalline silver nanowires with preferred orientation along the [111] direction can be synthesized.

Key words: Silver nanowires, Ion-track membranes, Electrochemical deposition