Facile in situ photochemical synthesis of silver nanoaggregates for surface-enhanced Raman scattering applications

Z Yin, H He, Z Wang, X Fang, C Xu, D Luo, S Jiang… - Nanomaterials, 2020 - mdpi.com
Z Yin, H He, Z Wang, X Fang, C Xu, D Luo, S Jiang, YJ Liu
Nanomaterials, 2020mdpi.com
Recently, photochemical synthesis has attracted wide interest on in situ preparing the
surface-enhanced Raman scattering (SERS) substrate with excellent performance,
especially in a compact space and microfluidic channel. Herein, a facile, green and cost-
effective approach to in situ photochemically synthesize silver nanoaggregates is
demonstrated for SERS applications. By adjusting the photo-irradiation conditions, the
morphologies and sizes of the silver nanoaggregates can be deliberately tailored. The …
Recently, photochemical synthesis has attracted wide interest on in situ preparing the surface-enhanced Raman scattering (SERS) substrate with excellent performance, especially in a compact space and microfluidic channel. Herein, a facile, green and cost-effective approach to in situ photochemically synthesize silver nanoaggregates is demonstrated for SERS applications. By adjusting the photo-irradiation conditions, the morphologies and sizes of the silver nanoaggregates can be deliberately tailored. The synthesized silver nanoaggregates-based substrates exhibit a highly sensitive and reproducible SERS activity with a low detection limit of 10−8 M for 4-Aminothiophenol detection and relative standard deviation of 12.3%, paving an efficient and promising route for in situ SERS-based rapid detection in the environmental monitoring and food quality control.
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