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Cotton Swab-Based Sers Substrate for Ultrasensitive Detection with Year-Long Stability and Multiple Recyclability

Submitted:

31 January 2025

Posted:

31 January 2025

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Abstract
In recent years, the development of Surface Enhanced Raman Spectroscopy (SERS) substrates has seen significant advancement. In this research, we successfully fabricated cotton swab-based SERS substrates using a facile solution-based method. Our SERS substrates showed not only ultrasensitive detection capability but also impressive long-term stability and multiple recyclability rounds. In particular, we reported a detection limit of 10-12 M RhB and a detectable concentration of thiophanate methyl as low as 10-10 M using our cotton swab-based SERS substrates. The stability of our substrates reached a 12-month mark, and they were recycled as many as five times simply by cleaning them with ozone. We look forward to expanding the applicability of our cotton-swab based SERS substrates to various types of analytes as well as optimizing our cotton-swab based SERS substrates for longer stability and more recyclability.
Keywords: 
ultrasensitive SERS; hybrid nanomaterial; plasmonic material; graphene oxide; flexible substrate; cotton swab; stability; recyclability
Subject: 
Chemistry and Materials Science  -   Materials Science and Technology
Copyright: This open access article is published under a Creative Commons CC BY 4.0 license, which permit the free download, distribution, and reuse, provided that the author and preprint are cited in any reuse.

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