Surface-enhanced Raman spectroscopy based on Silver nano-dendrites on microsphere end-shape optical fibre for pesticide residue detection
Optik, ISSN: 0030-4026, Vol: 219, Page: 165172
2020
- 13Citations
- 24Captures
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Article Description
In this paper, we present a novel type of surface-enhanced Raman spectroscopy (SERS) substrates using the surface of microsphere end-shape optical fibre coated silver nanodendrites fabricated by laser-assisted photochemical method, which can one-timely synthesis and deposit nano-silver on the surface of microsphere. The morphology and chemical composition of SERS microsphere-shape optical fibre substrates characterized by field emission scanning electron microscope (FE-SEM) and energy dispersive X-ray (EDX), respectively, show that the Ag nanodendrites coated on the surface of microspherical end-shape have excellent reproducibility and stability in the morphology and structures. The SERS-activity of microsphere end-shape optical fibre substrates has been tested by ultralow concentration of Rhodamine 6 G and detected Dimethoate pesticide in the low-concentration range of 0.005 ppm–4 ppm with Limit of Detection (LOD) of 0.002 ppm. This study indicated that SERS substrate based on microsphere end-shape optical fibre coupled with silver nanodendrites is a large potential tool for applications in high sensitive chemo-sensing technique.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0030402620310081; http://dx.doi.org/10.1016/j.ijleo.2020.165172; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85087333518&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0030402620310081; https://api.elsevier.com/content/article/PII:S0030402620310081?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S0030402620310081?httpAccept=text/plain; https://dul.usage.elsevier.com/doi/; https://dx.doi.org/10.1016/j.ijleo.2020.165172
Elsevier BV
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