Infrared light-assisted preparation of Ag nanoparticles-reduced graphene oxide nanocomposites for non-enzymatic H2O2 sensing

•AgNPs/rGO nanocomposites have been prepared by photochemical method.•AgNPs/rGO nanocomposites exhibit good sensing performances for detection of H2O2.•The present work provides a simple and green method for preparation of rGO-based materials.

A green method has been developed for preparation of Ag nanoparticles/reduced graphene oxide (AgNPs/rGO) nanocomposites by infrared light irradiation. The characterizations indicate the successful preparation of AgNPs/rGO nanocomposites. Most importantly, AgNPs/rGO nanocomposites exhibit excellent electrocatalytic activity for reduction of H2O2, leading to a high-performance non-enzymatic H2O2 sensor with linear detection range and detection limit about 0.1 mM to 140 mM (r = 0.9896) and 3.0 μM, respectively.

Graphical abstractAn infrared light irradiation method has been developed for preparation of AgNPs/rGO nanocomposites for electrochemical detection of H2O2.Figure optionsDownload full-size imageDownload as PowerPoint slide