Citation: CHEN Shao-Yun, WANG Yuan, LIU Hui, HU Cheng-Long, LIU Xue-Qing, LIU Ji-Yan. Surface-enhanced Raman Scattering Effect of Silver Dendritic Nanostructures[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(3): 374-380. doi: 10.11895/j.issn.0253-3820.160785 shu

Surface-enhanced Raman Scattering Effect of Silver Dendritic Nanostructures

Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China

Received Date: 27 October 2016
Revised Date: 15 December 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 51303066) and the Natural Science Foundation of Hubei Province, China (No. 2016CFB194)

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.
- Surface-enhanced Raman scattering,
- Silver micro-nano structures,
- Electrochemical deposition,
- Hierarchical structure
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