Glycine functionalized multiwalled carbon nanotube modified carbon paste electrode for the selective determination of Norepinephrine: A Voltammetric study

Abstract

Glycine functionalized multiwalled carbon nanotube composite was prepared by co precipitation method. The prepared glycine functionalized multiwalled carbon nanotube composite was characterized with various techniques. The Carbon paste electrode (CPE) was modified with synthesized glycine functionalized multiwalled carbon nanotube composite. The glycine functionalized multiwalled carbon nanotube composite modified CPE is used to study scan rate for the electrode process was controlled by diffusion process. Varying the concentration of Norepinehrine (NE) and evaluated the limit of detection and limit of quantification. pH Studies were carried out and examined the protons and electron ratio involved in the process by using cyclic voltammetry (CV). The method was used for the selective determination of NE in the presence of Ascorbic acid (AA) and the peak to peak difference for NE and AA was sufficient enough for the detection selectively and individually. The glycine functionalized multiwalled carbon nanotube composite modified CPE was extended for the analysis of NE real sample.

Keywords

• Glycine functionalized multiwalled carbon nanotube composite
• Norepinephrine
• Cyclic voltammetry
• Functionalized
• Co precipitation method