Eggshell membrane-templated gold nanoparticles as a flexible SERS substrate for detection of thiabendazole

• Published in: Mikrochimica acta (1966) 2019-07, Vol.186 (7), p.453-453, Article 453
• Main Authors: Ding, Qi, Kang, Zewen, He, Xingsheng, Wang, Minggong, Lin, Mengshi, Lin, Hetong, Yang, Da-Peng
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Microengineering; Nanochemistry; Nanoparticles; Nanotechnology; Original Paper; Pesticides
• ISSN: 0026-3672; 1436-5073
• DOI: 10.1007/s00604-019-3543-1

The authors describe a three-dimensional (3D) flexible interconnected porous nanocomposite membrane for use in surface-enhanced Raman scattering (SERS). It was obtained via in -situ deposition of gold nanoparticles (AuNPs, ca. 10 nm) on eggshell membranes (ESM). The AuNP/ESM nanocomposites were used as a SERS substrate for detection of the pesticide thiabendazole (TBZ) with prominent Raman bands at 1180, 1280, and 1580 cm −1 . The abundant “hot spots” are generated by the closely arranged AuNPs in the 3D geometry of the ESM networks. This makes the SERS substrate highly sensitive because of remarkable signal amplification. The substrates were applied to the rapid detection of TBZ in Oolong tea. The limit of detection for TBZ is 0.1 ppm. Graphical abstract Schematic presentation of a three-dimensional flexible interconnected porous nanocomposite membrane as surface-enhanced Raman scattering (SERS) substrate for detection of thiabendazole (TBZ) in tea.