An optical fiber SERS sensor based on GO/AgNPs/rGO sandwich structure hybrid films

作者：Gao, S. S.; Shang, S. B.; Liu, X. Y.; Li, Z.; Sheng, Y. Q.; Zhang, C.; Yang, C.; Qiu, H. W.; Huo, Y. Y.; Jiang, S. Z.^*

来源：RSC Advances, 2016, 6(85): 81750-81756.

DOI：10.1039/c6ra16869h

• ENHANCED RAMAN-SCATTERING
• LASER-INDUCED GROWTH
• SILVER ELECTRODE
• GRAPHENE OXIDE
• NANOPARTICLES
• DEPOSITION
• ARRAYS
• PROBE
• FACET

In this work, we present a novel optical fiber SERS (OF-SERS) sensor based on a sandwich structure of GO/AgNPs/rGO. Rhodamine 6G (R6G) was selected as the probe molecule to compare the SERS ability of different films composed of the bare optical fiber, GO, AgNPs, rGO/AgNPs, GO/AgNPs and GO/AgNPs/rGO. Raman spectra, scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were performed to characterize the sandwich structure hybrid films. Besides, the stability of GO/AgNPs and GO/AgNPs/rGO was compared on the optical fiber end face. The OF-SERS sensor based GO/AgNPs/rGO hybrid films had stable SERS performance even when exposed to ambient conditions for a prolonged time of 30 days. This work may provide a new strategy for an efficient stable OF-SERS sensor due to its simplicity, low-cost and long-term stability.

• 出版日期2016
• 单位山东师范大学