Surface-enhanced Raman Scattering Effect of Silver Dendritic Nanostructures
10.11895/j.issn.0253-3820.160785
- VernacularTitle:树枝状银微纳结构的表面增强拉曼散射效应研究
- Author:
Shaoyun CHEN
;
Yuan WANG
;
Hui LIU
;
Chenglong HU
;
Xueqing LIU
;
Jiyan LIU
- Keywords:
Surface-enhanced Raman scattering;
Silver micro-nano structures;
Electrochemical deposition;
Hierarchical structure
- From:
Chinese Journal of Analytical Chemistry
2017;45(3):374-380
- CountryChina
- Language:Chinese
-
Abstract:
The facile and efficient synthetic route for Ag dendritic nanostructures on Indium tin oxide ( ITO) via electrodeposition was reported. The results showed that the Raman intensities of rhodamine 6G ( R6G) decreased with decreasing the loading concentration, and even at a low concentration of 10-10 mol/L, the signatures of R6G in Raman spectrum were still clearly observed. It indicated that the Ag dendritic nanostructures exhibited high surface-enhanced Raman scattering ( SERS) sensitivity. Moreover, the relative standard deviation ( RSD ) of band at 610 cm-1 was calculated to be 12 . 1%, 12 . 0%, 11 . 7%, 10 . 9%, 13. 2% and 14. 3%, respectively, corresponding with the concentration of R6G from 10-5 mol/L to 10-10 mol/L, which revealed that the Ag dendritic nanostructures could provide abundant hot spots and exhibited excellent reproducibility. In addition, the SERS spectrum of 3-mercaptopropionic acid (3MPA) also could be detected when its concentration was 10-5 mol/L. This method offers an easy and low-cost way to prepare Ag dendritic substrates and makes SERS detection more practicable.