TY - JOUR
T1 - Highly sensitive determination of folic acid using graphene oxide nanoribbon film modified screen printed carbon electrode
AU - Mani, Veerappan
AU - Umamaheswari, Rajaji
AU - Chen, Shen Ming
AU - Govindasamy, Mani
AU - Su, Chaochin
AU - Sathiyan, Anandaraj
AU - Merlin, Johnson Princy
AU - Keerthi, Murugan
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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.
AB - 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.
UR - https://linkinghub.elsevier.com/retrieve/pii/S1452398123104883
UR - http://www.scopus.com/inward/record.url?scp=85009918045&partnerID=8YFLogxK
U2 - 10.20964/2017.01.34
DO - 10.20964/2017.01.34
M3 - Article
SN - 1452-3981
VL - 12
SP - 475
EP - 484
JO - International Journal of Electrochemical Science
JF - International Journal of Electrochemical Science
IS - 1
ER -