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Enhancing the sensitivity and selectivity of salbutamol detection using reduced graphene oxide combined with molecularly imprinted polymers (RGO/MIP)
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Document Title
Enhancing the sensitivity and selectivity of salbutamol detection using reduced graphene oxide combined with molecularly imprinted polymers (RGO/MIP)
Author
Limthin D, Leepheng P, Onlaor K, Tunhoo B, Klamchuen A, Thiwawong T, Phromyothin D
Name from Authors Collection
Affiliations
King Mongkuts Institute of Technology Ladkrabang; King Mongkuts Institute of Technology Ladkrabang; National Science & Technology Development Agency - Thailand; National Nanotechnology Center (NANOTEC)
Type
Article
Source Title
JAPANESE JOURNAL OF APPLIED PHYSICS
ISSN
0021-4922
Year
2022
Volume
61
Issue
1
Open Access
Bronze
Publisher
IOP Publishing Ltd
DOI
10.35848/1347-4065/ac5291
Format
Abstract
In this study, to enhance the selectivity and sensitivity of salbutamol detection performed by a carbon plate electrode, the electrode was modified using a novel molecularly imprinted polymer (MIP) combined with reduced graphene oxide (RGO). The RGO/MIP combination was prepared by the polymerization of methacrylic acid as a monomer using salbutamol as a template. The surface morphologies of the modified electrodes were studied using field-emission scanning electron microscopy (FE-SEM), and their performance was tested by an electrochemical technique that investigated both the cyclic voltammetry (CV) and amperometry (AMP) modes. The performance of the modified RGO/MIP electrode was compared with that of an MIP electrode, in which the RGO/MIP electrode was demonstrated to have 4.16 nA/ppm of sensitivity, more than the 0.91 nA/ppm of the MIP electrode. The limit of detection (LOD) of the RGO/MIP electrode, which was 0.83 ppm, was lower than that of the MIP electrode. Moreover, the RGO/MIP electrode's dynamic range extended from 1 to 1000 ppm, and it exhibited consistency, repeatability, a fast response, and high selectivity for salbutamol detection.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
King Mongkut's Institute of Technology Ladkrabang
License
Copyright
Rights
The Japan Society of Applied Physics
Publication Source
WOS