Cargando…

Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique

Melamine contamination in food and beverages affects short- and long-term health. In this work, enhanced sensitivity and selectivity in photoelectrochemical determination for melamine detection was achieved using copper(ii) oxide (CuO) combined with a molecularly imprinted polymer (MIP). A CuO nanom...

Descripción completa

Detalles Bibliográficos
Autores principales: Limthin, Dalawan, Leepheng, Piyawan, Tunhoo, Benchapol, Onlaor, Korakot, Klamchuen, Annop, Phromyothin, Darinee, Thiwawong, Thutiyaporn
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10183999/
https://www.ncbi.nlm.nih.gov/pubmed/37197674
http://dx.doi.org/10.1039/d3ra01854g
_version_ 1785042076523560960
author Limthin, Dalawan
Leepheng, Piyawan
Tunhoo, Benchapol
Onlaor, Korakot
Klamchuen, Annop
Phromyothin, Darinee
Thiwawong, Thutiyaporn
author_facet Limthin, Dalawan
Leepheng, Piyawan
Tunhoo, Benchapol
Onlaor, Korakot
Klamchuen, Annop
Phromyothin, Darinee
Thiwawong, Thutiyaporn
author_sort Limthin, Dalawan
collection PubMed
description Melamine contamination in food and beverages affects short- and long-term health. In this work, enhanced sensitivity and selectivity in photoelectrochemical determination for melamine detection was achieved using copper(ii) oxide (CuO) combined with a molecularly imprinted polymer (MIP). A CuO nanomaterial was used to achieve MIP surface modification via co-precipitation synthesis. An MIP film was deposited by polymerizing the methacrylic acid monomer and a melamine template. The properties of the CuO nanomaterials, such as the surface morphology, chemical oxidation state, and crystalline structure, were characterized using field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction patterns (XRD), respectively. The diffuse reflection spectroscopy technique was applied to evaluate the optical properties of the CuO nanoparticles. The results indicated that the synthesized CuO nanomaterials had a monoclinic structure with an optical bandgap of 1.49 eV, which corresponds to absorbance in the visible light region. CPE electrodes with surface-modified CuO/MIP were measured using the photoelectrochemical techniques of cyclic voltammetry, differential pulse voltammetry (DPV), and amperometry. The modified CuO/MIP electrode for melamine detection in 7.4 pH PBS buffer solution exhibited a high sensitivity of 0.332 nA nM(−1), with a linear range of 5.0–75.0 nM and a limit of detection of 2.45 nM. Moreover, real samples of various kinds of milk were applied to evaluate the sensing response of the prepared CuO/MIP electrode. The modified CuO/MIP electrodes could be reused seven times with good reproducibility and high selectivity for melamine detection.
format Online
Article
Text
id pubmed-10183999
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-101839992023-05-16 Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique Limthin, Dalawan Leepheng, Piyawan Tunhoo, Benchapol Onlaor, Korakot Klamchuen, Annop Phromyothin, Darinee Thiwawong, Thutiyaporn RSC Adv Chemistry Melamine contamination in food and beverages affects short- and long-term health. In this work, enhanced sensitivity and selectivity in photoelectrochemical determination for melamine detection was achieved using copper(ii) oxide (CuO) combined with a molecularly imprinted polymer (MIP). A CuO nanomaterial was used to achieve MIP surface modification via co-precipitation synthesis. An MIP film was deposited by polymerizing the methacrylic acid monomer and a melamine template. The properties of the CuO nanomaterials, such as the surface morphology, chemical oxidation state, and crystalline structure, were characterized using field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction patterns (XRD), respectively. The diffuse reflection spectroscopy technique was applied to evaluate the optical properties of the CuO nanoparticles. The results indicated that the synthesized CuO nanomaterials had a monoclinic structure with an optical bandgap of 1.49 eV, which corresponds to absorbance in the visible light region. CPE electrodes with surface-modified CuO/MIP were measured using the photoelectrochemical techniques of cyclic voltammetry, differential pulse voltammetry (DPV), and amperometry. The modified CuO/MIP electrode for melamine detection in 7.4 pH PBS buffer solution exhibited a high sensitivity of 0.332 nA nM(−1), with a linear range of 5.0–75.0 nM and a limit of detection of 2.45 nM. Moreover, real samples of various kinds of milk were applied to evaluate the sensing response of the prepared CuO/MIP electrode. The modified CuO/MIP electrodes could be reused seven times with good reproducibility and high selectivity for melamine detection. The Royal Society of Chemistry 2023-05-15 /pmc/articles/PMC10183999/ /pubmed/37197674 http://dx.doi.org/10.1039/d3ra01854g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Limthin, Dalawan
Leepheng, Piyawan
Tunhoo, Benchapol
Onlaor, Korakot
Klamchuen, Annop
Phromyothin, Darinee
Thiwawong, Thutiyaporn
Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title_full Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title_fullStr Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title_full_unstemmed Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title_short Preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
title_sort preparation of surface-modified electrode of copper(ii) oxide mixed with the molecularly imprinted polymer for enhancement of melamine detection with photoelectrochemical technique
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10183999/
https://www.ncbi.nlm.nih.gov/pubmed/37197674
http://dx.doi.org/10.1039/d3ra01854g
work_keys_str_mv AT limthindalawan preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT leephengpiyawan preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT tunhoobenchapol preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT onlaorkorakot preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT klamchuenannop preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT phromyothindarinee preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique
AT thiwawongthutiyaporn preparationofsurfacemodifiedelectrodeofcopperiioxidemixedwiththemolecularlyimprintedpolymerforenhancementofmelaminedetectionwithphotoelectrochemicaltechnique