Non-enzymatic electrochemical sensing of glucose by MWCNT modified with aluminium/zinc layered hydroxide-ferulate nanocomposites

Author : Mohamad Syahrizal Ahmad, Illyas Md Isa, Rozihan Saari, Mohamad Hafiz Ahmad Tajudin

Abstract :A high sensitivity and a wide working range electrochemical sensor for the determination of glucose (GLC) has been fabricated using multi wall carbon nanotubes (MWCNT). The introduction of aluminium/zinc layered hydroxide-ferulate (Al/ZLH-FA) as the conducting matrix has enhanced the conductivity of MWCNT. This was achieved by studying the electrochemical behaviour of GLC on Al/ZLH FA/MWCNT paste electrode, using square wave and cyclic voltammetry analysis. Under the optimized experimental conditions (pH, scan rate), a linear plot for GLC concentrations 3.0 µmol L-1 to 300 µmol L-1 (R2 = 0.9984) and calculated LOD is to be 1.3 µmol L-1. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) have been used to characterize the morphology of Al/ZLH-FA and Al/ZLH-FA/MWCNT, respectively. The fabricated Al/ZLH-FA/MWCNT electrode was successfully applied to glucose drinks, exhibiting excellent stability and reproducibility, which made it worthwhile for analytical applications

Keywords :Aluminium / zinc layered hydroxide-ferulate, electrochemical sensor glucose, multi wall carbon nanotubes

Conference Name :International Conference on Environment and Life Science (ICELS-25)

Conference Place Istanbul, Turkey

Conference Date 29th May 2025