Development of an electrochemical sensor for the determination of glycerol based on glassy carbon electrodes modified with a copper oxide nanoparticles/multiwalled carbon nanotubes/pectin composite

•An electrochemical sensor to determine glycerol in biodiesel was developed.•The platform is based on copper oxide nanoparticles supported on MWCNT/GC electrode.•Copper oxide nanoparticles promote the electrochemical oxidation of glycerol.•The sensor exhibits good performance and statistical paramet...

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