Chronoamperometric and voltammetric detection of carbamazepine in water using tungsten oxide nanoparticle platform.
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| Title: | Chronoamperometric and voltammetric detection of carbamazepine in water using tungsten oxide nanoparticle platform. |
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| Authors: | Zwane, Simphiwe1 (AUTHOR) zwanes@unisa.ac.za, Feleni, Usisipho1 (AUTHOR) |
| Source: | Applied Surface Science. Sep2026, Vol. 741, pN.PAG-N.PAG. 1p. |
| Subjects: | Carbamazepine, Tungsten oxides, Environmental monitoring, Sewage, Water pollution monitoring, Electrochemical sensors, Chronoamperometry, Voltammetry |
| Abstract: | [Display omitted] • WO 3 nanoparticles were used to modify a glassy carbon electrode for detecting carbamazepine in water. • FTIR, XRD and XPS confirmed the physicochemical properties of WO 3. • The electrooxidation of carbamazepine on the platform was controlled by diffusion. • The limit of detection was 0.976 µM in chronoamperometry and 0.039 µM in DPV analysis. • The recovery percentage was greater than 94%. Carbamazepine (CBZ) is as an emerging pharmaceutical pollutant in water bodies posing negative impact on the ecosystem because of enduring exposure. Herein, an electrochemical sensor composed of tungsten oxide nanoparticles (WO 3 NPs) was designed to detect carbamazepine in phosphate buffer and wastewater using the electrooxidation method. WO 3 NPs were prepared using a precipitation and calcination method. The FTIR, XRD and XPS confirmed the physicochemical properties of WO 3 NPs. SEM and HR-TEM confirmed the morphology of WO 3 nanoparticles. The WO 3 NPs were deposited on a glassy carbon electrode (GCE) using the drop-casting method and oxidation experiments were performed in 0.1 M phosphate buffer, at pH 7.4, as an electrolyte. The scan rate studies and the Randles–Ševčík theory revealed that the electrooxidation of CBZ on the WO 3 -modified GCE was controlled by diffusion. The limit of detection was 0.976 µM in chronoamperometry and 0.039 µM in DPV analysis in the linear range of 0.1 to 100 µM. The stability was remarkable, with an RSD of 4.7% over 10 measurements for three electrodes. Detection was also evaluated in wastewater, where the recovery percentage was not less than 94%, maintaining good sensitivity, selectivity, and stability under real environmental conditions. The developed WO 3 nanoparticle platform has shown a great potential in sensor applications, offering a promising tool for wastewater treatment and environmental monitoring. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193977906 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Chronoamperometric and voltammetric detection of carbamazepine in water using tungsten oxide nanoparticle platform. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zwane%2C+Simphiwe%22">Zwane, Simphiwe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zwanes@unisa.ac.za</i><br /><searchLink fieldCode="AR" term="%22Feleni%2C+Usisipho%22">Feleni, Usisipho</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Sep2026, Vol. 741, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbamazepine%22">Carbamazepine</searchLink><br /><searchLink fieldCode="DE" term="%22Tungsten+oxides%22">Tungsten oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+monitoring%22">Environmental monitoring</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage%22">Sewage</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution+monitoring%22">Water pollution monitoring</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+sensors%22">Electrochemical sensors</searchLink><br /><searchLink fieldCode="DE" term="%22Chronoamperometry%22">Chronoamperometry</searchLink><br /><searchLink fieldCode="DE" term="%22Voltammetry%22">Voltammetry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • WO 3 nanoparticles were used to modify a glassy carbon electrode for detecting carbamazepine in water. • FTIR, XRD and XPS confirmed the physicochemical properties of WO 3. • The electrooxidation of carbamazepine on the platform was controlled by diffusion. • The limit of detection was 0.976 µM in chronoamperometry and 0.039 µM in DPV analysis. • The recovery percentage was greater than 94%. Carbamazepine (CBZ) is as an emerging pharmaceutical pollutant in water bodies posing negative impact on the ecosystem because of enduring exposure. Herein, an electrochemical sensor composed of tungsten oxide nanoparticles (WO 3 NPs) was designed to detect carbamazepine in phosphate buffer and wastewater using the electrooxidation method. WO 3 NPs were prepared using a precipitation and calcination method. The FTIR, XRD and XPS confirmed the physicochemical properties of WO 3 NPs. SEM and HR-TEM confirmed the morphology of WO 3 nanoparticles. The WO 3 NPs were deposited on a glassy carbon electrode (GCE) using the drop-casting method and oxidation experiments were performed in 0.1 M phosphate buffer, at pH 7.4, as an electrolyte. The scan rate studies and the Randles–Ševčík theory revealed that the electrooxidation of CBZ on the WO 3 -modified GCE was controlled by diffusion. The limit of detection was 0.976 µM in chronoamperometry and 0.039 µM in DPV analysis in the linear range of 0.1 to 100 µM. The stability was remarkable, with an RSD of 4.7% over 10 measurements for three electrodes. Detection was also evaluated in wastewater, where the recovery percentage was not less than 94%, maintaining good sensitivity, selectivity, and stability under real environmental conditions. The developed WO 3 nanoparticle platform has shown a great potential in sensor applications, offering a promising tool for wastewater treatment and environmental monitoring. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.apsusc.2026.167191 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Carbamazepine Type: general – SubjectFull: Tungsten oxides Type: general – SubjectFull: Environmental monitoring Type: general – SubjectFull: Sewage Type: general – SubjectFull: Water pollution monitoring Type: general – SubjectFull: Electrochemical sensors Type: general – SubjectFull: Chronoamperometry Type: general – SubjectFull: Voltammetry Type: general Titles: – TitleFull: Chronoamperometric and voltammetric detection of carbamazepine in water using tungsten oxide nanoparticle platform. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zwane, Simphiwe – PersonEntity: Name: NameFull: Feleni, Usisipho IsPartOfRelationships: – BibEntity: Dates: – D: 30 M: 09 Text: Sep2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 01694332 Numbering: – Type: volume Value: 741 Titles: – TitleFull: Applied Surface Science Type: main |
| ResultId | 1 |
