银单晶纳米线的气相合成及其表面增强拉曼散射特性

doi:10.3969/j.issn.0253-2778.2014.02.005

中国科学技术大学学报 ›› 2014, Vol. 44 ›› Issue (2): 106-111.DOI: 10.3969/j.issn.0253-2778.2014.02.005

银单晶纳米线的气相合成及其表面增强拉曼散射特性

李志

中国科学技术大学物理系，合肥微尺度物质科学国家实验室，安徽合肥 230026

收稿日期:2013-04-02 修回日期:2014-01-16 出版日期:2014-02-28 发布日期:2014-02-28
作者简介:LI Zhi，male, born in 1982, PhD candidate. Research filed: synthesis and application of nanomaterials.

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

摘要/Abstract

摘要： 通过气-液-固（VLS）机制，利用热蒸发方法在Ag/ZnO同轴结构纳米线中合成了单晶Ag纳米线.ZnO壳的限制作用被认为是促成了Ag单晶相的形成.通过腐蚀掉ZnO壳而获得的银纳米线，其直径可以通过改变源中银的含量来调控.这些高质量的银纳米线具有明显的表面增强拉曼散射（SERS）增强效果.

关键词: 银纳米线, 化学气相沉积（CVD）, 氧化锌, 同轴结构纳米线, 表面增强拉曼散射（SERS）

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)

李志，祝巍，余庆选，杨乾辉，邵智斌，楼立人. 银单晶纳米线的气相合成及其表面增强拉曼散射特性[J]. 中国科学技术大学学报, 2014, 44(2): 106-111.

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.

[1]	杨晓喻，王超，洪德雄，方明亮，蔡亮，陈琳，闫文盛. 核壳结构氧化锌/石墨烯的光催化性能及机理研究[J]. 中国科学技术大学学报, 2014, 44(8): 661-666.
[2]	刘凯鹏，杨碚芳，严鸿维，傅正平，左健. 氧化锌及银掺杂的氧化锌薄膜的紫外发光研究[J]. 中国科学技术大学学报, 2009, 39(4): 365-370.

银单晶纳米线的气相合成及其表面增强拉曼散射特性

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

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