Single-crystal silver nanowires: Preparation and Surface-enhanced Raman Scattering (SERS) property
Baoliang Sun, Xiaohong Jiang, Shuxi Dai, Zuliang Du
TL;DR
This paper reports the successful preparation of ordered silver nanowire arrays with high aspect ratio and density, demonstrating high surface-enhanced Raman scattering activity for potential sensing applications.
Contribution
The study introduces a novel method for fabricating large-area, ordered silver nanowire arrays with high aspect ratio using potentiostatic electrodeposition in AAO templates.
Findings
High SERS activity of the silver nanowire arrays
Uniform diameter and smooth surface of nanowires
Preferred (220) orientation confirmed by diffraction analysis
Abstract
Ordered Ag nanowire arrays with high aspect ratio and high density self-supporting Ag nanowire patterns were successfully prepared using potentiostatic electrodeposition within the confined nanochannels of a commercial porous anodic aluminium oxide (AAO) template. X-ray diffraction and selected area electron diffraction analysis show that the as-synthesized samples have preferred (220) orientation. Transmission electron microscopy and scanning electron microscopy investigation reveal that large-area and ordered Ag nanowire arrays with smooth surface and uniform diameter were synthesized. Surface-enhanced Raman Scattering (SERS) spectra show that the Ag nanowire arrays as substrates have high SERS activity.
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