Recyclable Surface-Enhanced Raman Scattering Substrate-Based Sensors for Various Applications

Abstract

Surface enhanced Raman scattering (SERS) has been widely used for detection and characterization benefiting from its high sensitivity and selectivity (molecular fingerprint information). However, the strong adsorption of target molecules (“memory effect”) on the nanoparticle surface inherently limits the recycle of SERS substrates. This paper focuses on the different strategies to achieve recyclable SERS substrates and their applications. First, the problems of nonrecyclable SERS substrates are discussed systematically. Then, two categories are summarized to achieve recyclable SERS substrates and their applications: (1) chemical-free cleaning methods (including photocatalytic degradation, thermal cleaning, and plasma treatment) and (2) chemical-assisted cleaning methods (including solvent washing, chemical reaction, and electrochemistry). Moreover, we put forward current challenges and potential strategies of recyclable SERS substrates.

Prospects for the use of laser spectroscopy to characterize dye degradation photocatalyst nanoparticles: a review

“…133 Zhang et al systematically discussed the problem of non-recyclable SERS substrates and summarized the methods used for their application. 134 These works provide a wide range of research ideas for the study of photocatalyst nanoparticles in metal-semiconductor hybrids using SERS.…”

Recyclable non-metal surface-enhanced Raman scattering substrate based on graphene oxide/ZIF-67 nanocomposites

“…The single-use nature of traditional SERS substrates not only increases the production costs but also increases the difficulty of subsequent validation experiments. 19 Therefore, the development of reusable SERS substrates has generated much interest.…”

Regulated synthesis of an Au NB-DT@Ag bimetallic core-molecule–shell nanostructure for reliable SERS detection

“…Electromagnetic enhancement, as the main contributor (EF = 10 3 -10 11 ), is based on the strong localized surface plasmonic resonance (LSPR) on the surface of plasmonic nanoparticles. [10][11][12][13][14] Thus, it is of extremely great research signicance to develop new kinds of efficient SERS substrate nanomaterial. 13,14 Plasmonic core-shell nanomaterials stand out among diverse SERS substrates due to their brilliant optical properties.…”

“…[10][11][12][13][14] Thus, it is of extremely great research signicance to develop new kinds of efficient SERS substrate nanomaterial. 13,14 Plasmonic core-shell nanomaterials stand out among diverse SERS substrates due to their brilliant optical properties. [15][16][17][18] The coated shell can greatly improve the LSPR property of the overall structure through changing the dielectric constant and electron sharing.…”

“…10–14 Thus, it is of extremely great research significance to develop new kinds of efficient SERS substrate nanomaterial. 13,14…”