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This article reviews the progress made in the past 5 years in the field of direct and non-enzymatic electrochemical sensing of glucose. Following a brief discussion of the merits and limitations of enzymatic glucose sensors, we discuss the history of unraveling the mechanism of direct oxidation of glucose and theories of non-enzymatic electrocatalysis. We then review non-enzymatic glucose electrodes...
A novel sandwich-type electrochemical immunosensor for human immunoglobulin G (hIgG) was developed using Au/SiO2 nanoparticles (NPs) with adsorbed horseradish peroxidase-anti-hIgG as the secondary antibody layer. The signal readout is based on the amperometric response to the catalytic reduction of hydrogen peroxide at an AuNPs-polythionine modified glassy carbon electrode. Under optimized conditions,...
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