欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2013, Vol. 19 ›› Issue (2): 151-154.  doi: 10.61558/2993-074X.2107

• 研究论文 • 上一篇    下一篇

超薄纳米多孔金膜的制备及其局域表面等离子体效应研究

冯时,陈述,杨青,向娟*   

  1. 中南大学化学化工学院,湖南 长沙 410083
  • 收稿日期:2012-03-21 修回日期:2012-04-17 出版日期:2013-04-28 发布日期:2012-04-27
  • 通讯作者: 向娟 E-mail:xiangj@csu.edu.cn
  • 基金资助:

    湖南省杰出青年基金(No. 09JJ1002)资助

Fabrication and Localized Surface Plasmon Resonance of Ultrathin Nanoporous Gold Films

FENG Shi, CHEN Shu, YANG Qing, XIANG Juan*   

  1. Department of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
  • Received:2012-03-21 Revised:2012-04-17 Published:2013-04-28 Online:2012-04-27
  • Contact: XIANG Juan E-mail:xiangj@csu.edu.cn

摘要: 采用电化学去合金法制得50 nm的超薄纳米多孔金膜(Nanoporous Gold Film,NPGF),其表面粗糙度可预估NPGF的表面形貌. SEM表征证实,在扫描下限大于-0.1 V时,控制伏安扫描的循环周数可获得不同粗糙度的NPGF. 利用反射紫外可见光谱研究了NPGF的局域表面等离子体效应(LSPR). 结果显示,NPGF在450 nm处的LSPR效应受其表面粗糙度影响,在优化的粗糙度下,NPGF的局域表面等离子体效应可实现乙二醇溶液浓度的定量检测.

关键词: 超薄纳米多孔金膜, 电化学去合金法, 局域表面等离子体共振(LSPR)

Abstract: Ultrathin nanoporous gold films (NPGF) with a thickness of approximately 50 nm were fabricated via electrochemical dealloy method. The morphology of NPGF was evaluated with a parameter of surface roughness. SEM results demonstrate that the fabrication of NPGF with different roughness factors can be achieved by controlling the circles of cyclic voltammetry. UV-Vis spectra indicate that the localized surface plasmon resonance (LSPR) of NPGF is affected by the roughness of NPGF. With the optimal roughness factor, NPGF displays a linear relationship between the ethanediol concentration and the absorbance intensity at λ = 450 nm. The LSPR effect of NPGF presents potential applications in quantitative detection of solution concentration.

Key words: ultrathin nanoporous gold film, electrochemical dealloy, localized surface plasmon resonance (LSPR)

中图分类号: