Fig. 2
H2S quantifying capacities of three-channel platform. a Schematic illustrations of the H2S quantifying mechanism of the rationally constructed three-channel platform. Electrochemical impedance spectra of three-channel platform (b) and ultraviolet–visible–near-infrared spectra of RENPs–Cu–ALG gel (c) in the absence and presence of H2S. d Finite element simulation of the heat conduction of electrode surface induced by the photothermal process. GCE was the abbreviation of glassy carbon electrode. SWV curves (e), luminescence spectra (f), and thermal-sensitive UCL curve (g) of three-channel platform in response to various CH2S. Linear relationship between ΔI (h), Ln(I654/I1550) (i), and Ln(I525/I545) (j) of three-channel platform and various CH2S. Data are represented as mean ± SD (n = 3).
