Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Oxygen sensitive 1-amino-2-naphthol immobilized functionalized-carbon nanotube electrode

Author affiliations

Abstract

Herein, we account for a modified glassy carbon electrode with a copper-1-amino-2-naphthol (AN–Cu2+) complex immobilized on a carboxyl-functionalized multiwalled carbon nanotube (f-MWCNT) (GCE/f-MWCNT@AN–Cu2+). It is employed for the electrochemical detection of dissolved oxygen (DO) in 0.1 mol L−1 phosphate buffer solution (PBS). The oxygen reduction reaction was exclusively catalyzed by the AN coated f-MWCNT. Cu2+ was merely used to immobilize AN on the f-MWCNT to enhance the stability of the electrode. To prove the interaction between O2 and AN, a dilute solution of AN in pH 7 PBS was monitored by purging N2 and O2, and an intense turbidity was observed, with O2 indicating the adduct formation between AN and O2. The prepared sensor exhibits an excellent tolerance to interferents which are found in water samples along with oxygen. The Koutecky-Lévich analysis confirms the four-electron reduction of O2. Moreover, reproducibility, stability, the limit of detection (LOD), and sensitivity of the modified electrode were found to show the capability of the proposed sensor for monitoring the DO content.

Graphical abstract: Oxygen sensitive 1-amino-2-naphthol immobilized functionalized-carbon nanotube electrode

Back to tab navigation

Article information


Submitted
29 Jan 2020
Accepted
29 Apr 2020
First published
30 Apr 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Oxygen sensitive 1-amino-2-naphthol immobilized functionalized-carbon nanotube electrode

V. Jain, T. Gurusamy, P. Gayathri and K. Ramanujam, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ00438C

Social activity

Search articles by author

Spotlight

Advertisements