Determination of hydrogen peroxide based on calcined layered double hydroxide-modified glassy carbon electrode in flavored beverages

Abstract

In this paper, we developed an amperometric hydrogen peroxide (H2O2) sensor based on cobalt-containing calcined layered double hydroxide (Co CLDH). The electrocatalytic activity of the Co CLDH towards the determination of H2O2 showed a fast response and high sensitivity. Moreover, the sensor exhibited good reproducibility and long-term stability. The superior electrocatalytic response to H2O2 is mainly attributed to the large surface area, minimized diffusion resistance, and enhanced electron transfer of the synthesized Co CLDH. This method with good analytical performance, low cost, and straightforward preparation made this novel electrode material promising for the determination of trace H2O2 in beverages with high accuracy, demonstrating its potential for practical application.