One-step synthesis of nanosilver embedding laser-induced graphene for H2O2 sensor

Rapid preparation of Ag/CoO/rGO composites for electrochemical detection of hydrogen peroxide

“…Fig. 2(e) illustrates the Ag3d spectrum of Ag/CoO, revealing two peaks at 374.4 eV and 368.2 eV, corresponding to Ag3d 3/2 and Ag 3d 5/2 , indicating the successful loading of Ag on CoO, 34 consistent with the results obtained from XRD and SEM. In Fig.…”

“…During the analysis process, an addition technique consistent with previous reports was employed, involving the addition of different concentrations of H 2 O 2 every 100 seconds for multi-step timed current analysis. CA test parameters were set with an initial potential of 0 V and a maximum potential of 0.2 V, and the running time was set to 900 s. [32][33][34] The concentration ranges are 0-150 mM and 100-600 mM, respectively. Three replicates were carried out for each concentration point in both the CV and CA experiments.…”

“…5(a) illustrates the interference resistance test of the Ag/ CoO/rGO SPE in a 0.1 M NaOH buffer solution. A chronoamperometry (CA) technique was employed at an 0.2 V to test common interferents 34,51 found in practical applications, including ascorbic acid (AA), ethanol (Eth), dopamine (DA), glucose (Glu), Na 2 SO 4 , NaCl, and KCl. The experiment involves continuous stirring for 100 s, initially adding 20 mM H 2 O 2 , which resulted in a noticeable current response.…”