Fig. 1: Preparation and in-flow EC-SERS analyte detection, cleaning, and regeneration with MLagg-CB[5]. | Nature Communications

Fig. 1: Preparation and in-flow EC-SERS analyte detection, cleaning, and regeneration with MLagg-CB[5].

From: In situ electrochemical regeneration of nanogap hotspots for continuously reusable ultrathin SERS sensors

Fig. 1

a Preparation of MLagg-CB[5] SERS aggregate from self-assembly of AuNPs with CB[5], followed by deposition onto solid support. Photo and scanning electron micrograph (SEM) show MLagg-CB[5] deposited on FTO-coated glass. b Schematic illustraties the integration of an MLagg-CB[5] into an EC-SERS flow system. c Cross-section of the EC-SERS flow cell (CE = counter electrode, RE = reference electrode, and WE = working electrode). d Schematic of in situ electrochemical SERS analyte detection and cleaning/regeneration protocol. Potentials are vs Ag/AgCl. e SERS spectra from: initial MLagg-CB[5] (grey), after detection of 10 µM adenine (ADN) (red), after oxidative cleaning step (blue), and after regeneration step (black). ADN peak at 732 cm−1 is marked by asterisk. SERS spectra are collected with 1 s integration time and 1 mW 785 nm laser.

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