Highly stable and selective LaNiO3nanostructures modified glassy carbon electrode for simultaneous electrochemical detection of neurotransmiting compounds

Different morphologies of LaNiO3 nanostructures modified on GCE for simultaneous electrochemical detection of DA, AA and UA [Display omitted] •LaNiO3 nanostructures with three different morphologies were successfully prepared.•The prepared nanostructures were used to modify glassy carbon electrode f...

Full description

Saved in:
Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2021-06, Vol.618, p.126387, Article 126387
Main Authors: Priyatharshni, S., Navadeepthy, D., Srividhya, G., Viswanathan, C., Ponpandian, N.
Format: Article
Language:English
Subjects:
Dopamine
Electrochemistry
LaNiO3
Simultaneous detection
Urea
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Different morphologies of LaNiO3 nanostructures modified on GCE for simultaneous electrochemical detection of DA, AA and UA [Display omitted] •LaNiO3 nanostructures with three different morphologies were successfully prepared.•The prepared nanostructures were used to modify glassy carbon electrode for electrochemical detection.•Change in scan rate, pH and dopamine concentrations was thoroughly investigated.•The potential difference indicates the selective detection of dopamine. Monitoring the physiological level of neurotransmitting compounds such as Dopamine (DA), Uric acid (UA) and Ascorbic acid (AA) present in human serum has gained considerable interest in the past decades. In the present study, we report LaNiO3 nanostructures for the effective detection of DA, UA and AA by electrochemical method. A simple, cost-effective hydrothermal route is opted to obtain the rod-like, disk-like and spherical morphologies of LaNiO3nanostructures. The morphology of the LaNiO3 nanostructures can be easily tuned by employing different surfactants in the hydrothermal synthesis. Among different morphologies, LaNiO3spheres, synthesized using urea as the surfactant, showed higher electrocatalytic activity with a limit of detection reaching 4 μM upon sensing of DA, owing to the enhanced active surface area for spherical nanoparticles. The result confirms that the modified electrode is capable of both effective and simultaneous detection of the aforementioned biological compounds.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2021.126387