Molybdenum disulfide nanosheets supported Au-Pd bimetallic nanoparticles for non-enzymatic electrochemical sensing of hydrogen peroxide and glucose

The molybdenum disulfide (MoS 2 ) nanosheets supported Au-Pd bimetallic nanoparticles were synthesized using a facile thermal co-reduction method. The Au-Pd/MoS 2 nanocomposites showed good electrocatalytic activities toward the reduction of hydrogen peroxide (H 2 O 2 ) in neutral solution and the oxidation of glucose in alkaline solution, attributed to the synergistic effects of the Au-Pd bimetallic nanoparticles and MoS 2 nanosheets. The fabricated non-enzymatic electrochemical sensors exhibited the linear responses of H 2 O 2 and glucose in the concentration ranges of 0.8   μM–10   mM and 0.5–20   mM with the detection limits of 0.16   μM and 0.40   mM (S/N   =   3), respectively, together with good stability and reproducibility. The Au-Pd/MoS 2 nanocomposites provide new potential materials for the development of other non-enzymatic sensors.