Detection of Trace Copper Ions on Benzotriazole Functionalized Silver/Nickel Foam Based on Surface-Enhanced Raman Scattering Peak Shifting Strategy
10.19756/j.issn.0253-3820.231312
- VernacularTitle:基于苯并三唑功能化银/泡沫镍基底的表面增强拉曼光谱谱峰偏移策略检测痕量铜离子
- Author:
Hai-Dan LIN
1
;
Cheng-Cheng SONG
;
Ming MU
;
Jia-Chang GUO
;
Dai-Yong YANG
;
Wei SONG
Author Information
1. 国网吉林省电力有限公司电力科学研究院,长春 130000
- Keywords:
Surface-enhanced Raman spectroscopy;
Nickel foam;
Ag nanoparticles;
Benzotriazole;
Cu2+detection
- From:
Chinese Journal of Analytical Chemistry
2025;53(9):1566-1575
- CountryChina
- Language:Chinese
-
Abstract:
The efficient,precise,and rapid detection of trace copper ions(Cu2+)is of paramount importance in the realms of food safety,environmental monitoring,and medical health.By ingeniously utilizing the chemical properties of benzotriazole compounds in copper protection,and introducing an electrochemical reduction strategy,a silver nanoparticle composite structure supported by a nickel foam substrate was developed as an active platform for surface-enhanced Raman scattering(SERS)detection.This platform employed benzotriazole-5-carboxylic acid(BTAC)as a specific SERS probe molecule to achieve sensitive analysis of metal ion concentrations.The detection mechanism revealed a highly selective coordination between the Cu2+and the nitrogen atom in the triazole ring of BTAC,triggering subtle structural changes in the triazole ring.This was manifested by a significant and quantifiable shift in the characteristic peak of the SERS spectrum(particularly at 1001 cm-1),with a maximum shift of up to 30 cm-1.This phenomenon not only addressed the issue of reproducibility in quantitative analysis caused by the non-uniformity of SERS substrate materials but also significantly broadened the application boundaries of SERS technology for trace metal ion detection.It enabled ultra-sensitive detection of Cu2+concentrations ranging from 1×10-6 to 1×10-11 mol/L,with a detection limit as low as 1×10-11 mol/L,significantly enhancing detection sensitivity and accuracy.This work provided a novel and efficient strategy for rapid detection of trace Cu2+and enriched the application potential of SERS technology in food safety,environmental monitoring and biomedical analysis.
