Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode as a renewable electrode and novel electrochemical sensor for hydrogen peroxide

摘要: In the present study, a simple and highly sensitive electrochemical method was developed for determination of hydrogen peroxide (H2O2) through Ni–Al/layered double hydroxide/Ag nanoparticle composite modified carbon-paste electrode (Ni–Al/LDH/Ag NPs/CPE) as renewable in 0.1 M phosphate buffer solution (PBS, pH = 7.0). Scanning electron microscopy (SEM), atomic force (AFM), X-ray diffraction (XRD) were performed characterization Ni–Al/LDH/Ag NP composite. The electrocatalytic activity NPs/CPE H2O2 reduction studied by cyclic voltammetry chronoamperometric (at an applied potential −0.9 V) methods. prepared sensor shows good activity, fast response time, stability reproducibility. also displays linear range from 10 μM to mM concentration with detection limit 6 (S/N 3) sensitivity 1.863 μA mM−1 cm−2. This employed successfully real samples method, which indicates its applicability practical analysis.