Vapor-phase synthesis of single-crystalline  Ag nanowires and their SERS properties

doi:10.3969/j.issn.0253-2778.2014.02.005

Journal of University of Science and Technology of China ›› 2014, Vol. 44 ›› Issue (2): 106-111.DOI: 10.3969/j.issn.0253-2778.2014.02.005

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Vapor-phase synthesis of single-crystalline Ag nanowires and their SERS properties

LI Zhi

Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics, University of Science and Technology of China, Hefei 230026, China

Received:2013-04-02 Revised:2014-01-16 Online:2014-02-28 Published:2014-02-28
Contact: ZHU Wei

Abstract

Abstract: Single-crystalline Ag nanowires with a face-centered cubic (fcc) crystal structure were synthesized inside Ag/ZnO coaxial nanocables by the vapor-liquid-solid (VLS) mechanism through a thermal evaporation route. The confinement of the ZnO shell was believed to be responsible for the emergence of the single-crystalline phase. Ag nanowires with different diameters could be obtained by etching Ag/ZnO coaxial nanocables with modulated core-shell ratio determined by Ag concentration in the source. These high-quality silver nanowires were explored as sensitive substrates of surface enhanced Raman scattering (SERS).

Key words: Ag nanowires, chemical vapor deposition (CVD), ZnO, coaxial nanocable, sueface enhanced Raman scattering (SERS)

LI Zhi, ZHU Wei, YU Qingxuan, YANG Qianhui, SHAO Zhibin, LOU Liren. Vapor-phase synthesis of single-crystalline Ag nanowires and their SERS properties[J]. Journal of University of Science and Technology of China, 2014, 44(2): 106-111.

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Vapor-phase synthesis of single-crystalline Ag nanowires and their SERS properties

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