Electrodeposition Of Zinc Oxide Nano Particles On Multiwalled Carbon Nanotubes Modified Glassy Carbon Electrodefor Simultaneous Detection Of Acetaminophen And Caffeine

ABSTRACT

A new simple novel electrochemical sensing platform based onelectrodeposition ofnano zinc

oxide ontomultiwalled carbon nanotubes modified glassy carbon electrode was constructed. The

modified electrode was characterized by cyclic voltammetry and electrochemical impedance in a

redox probe.The electrode surface area after modification was 0.15 cm2, which was twice large

that of a bare glassy carbon electrode. The new fabricated sensor was applied for individual and

simultaneous determination of caffeine and acetaminophen. The limit of detection (LOD)for

individual determination was 3.69 × 10􀬿􀬼 M for acetaminophen and 3.52 × 10􀬿􀬼 M for

caffeine.The electrode showed good reproducibility, sensitivity and stability for detection of both

acetaminophen and caffeine. A good recovery level obtained for real samples suggests practical

utility of the ZnO/MWCNT/GCE as an effective sensor for simultaneous determination of

acetaminophen and caffeine.

Read Download