Highly sensitive determination of folic acid using graphene oxide nanoribbon film modified screen printed carbon electrode

Veerappan Mani, Rajaji Umamaheswari, Shen Ming Chen, Mani Govindasamy, Chaochin Su, Anandaraj Sathiyan, Johnson Princy Merlin, Murugan Keerthi

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

A cost-effective screen printed electrode modified with graphene oxide nanoribbon (GONR) is developed for the determination of folic acid (FA). GONR is prepared from multi-walled carbon nanotubes (MWCNTs) and our studies revealing that the electrocatalytic ability of MWCNTs is greatly improved in GONR. The GONR is successfully characterized by SEM, EDX and impedance analysis. Next, GONR was deposited on the pretreated screen printed carbon electrode (SPCE) and the resulting GONR/SPCE was used to study the electrocatalysis of FA. The fabricated modified electrode has excellent electrocatalytic ability to detect FA. The effect of scan rate and pH towards electrocatalysis of FA is studied in detailed. The electrode detects FA in wide linear range of 0.1-1600 μM and achieves low detection limit of 20 nM. The sensor performance of the GONR/SPCE is either superior or comparable to the previously published FA sensors. Moreover, the electrode has good repeatability, reproducibility, stability and practicality.
Original languageEnglish (US)
Pages (from-to)475-484
Number of pages10
JournalInternational Journal of Electrochemical Science
Volume12
Issue number1
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • Electrochemistry

Fingerprint

Dive into the research topics of 'Highly sensitive determination of folic acid using graphene oxide nanoribbon film modified screen printed carbon electrode'. Together they form a unique fingerprint.

Cite this