Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide.
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| Title: | Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide. |
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| Authors: | Zwane, Simphiwe1 (AUTHOR), Dlamini, Derrick S.1,2 (AUTHOR), Mamba, Bhekie B.1 (AUTHOR), Kuvarega, Alex T.1 (AUTHOR) kuvarat@unisa.ac.za |
| Source: | Inorganic Chemistry Communications. May2023, Vol. 151, pN.PAG-N.PAG. 1p. |
| Subjects: | Tungsten oxides, Photodegradation, Water use, Precipitation (Chemistry), Rhodamine B, Nitrides |
| Abstract: | [Display omitted] • WO 3 /g-C 3 N 4 was synthesized using precipitation and calcination method. • Chemical integration of WO 3 and g-C 3 N 4 improved the photocatalysis process. • Within 120 min, the photodegradation of tartrazine and rhodamine B was 99%. • Possible degradation mechanism using WO 3 /g-C 3 N 4 was proposed. • WO 3 /g-C 3 N 4 was stable after 5 photodegradation cycles with RSD% of 2.6%. The coupling of semiconductor photocatalysts is a promising technique for reducing rapid recombination of photo-generated electron-hole and improving the separation of photoinduced charges in photodegradation processes. The heterojunction WO 3 /g-C 3 N 4 was synthesized using a superficial precipitation and calcination method for the photodegradation of selected dyes and pharmaceuticals in water. The integration of WO 3 and g-C 3 N 4 was confirmed using characterization techniques such as FTIR, Raman, BET, UV–Vis, TGA, XRD, XPS and HR-TEM. Zetapotential analysis revealed improved surface area, less negative charge, and enhanced conductivity of the heterojunction photocatalyst. The electrochemical analysis further confirmed separation of electron/hole pairs and faster interfacial charge transfer within the hybrid photocatalyst. An improvement in the recombination of electrons and holes in photocatalysts was proven by PL analysis. Both Rhodamine B and tartrazine were completely photodegraded within 120 min. Carbamazepine and ibuprofen needed more reaction time to be fully degraded using WG photocatalyst. Hydroxyl radicals, holes and superoxide participated in the photodegradation process where the hydroxyl radicals were the dominant species. The hybrid photocatalyst produced stable photodegradation performance for five cycles and the relative standard deviation percentage (RSD%) was 2.68. The WO 3 /g-C 3 N 4 photocatalyst is a promising visible light active material for the treatment of pharmaceuticals and dyes in water using the photocatalysis process. [ABSTRACT FROM AUTHOR] |
| Copyright of Inorganic Chemistry Communications 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: 163165330 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zwane%2C+Simphiwe%22">Zwane, Simphiwe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dlamini%2C+Derrick+S%2E%22">Dlamini, Derrick S.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mamba%2C+Bhekie+B%2E%22">Mamba, Bhekie B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuvarega%2C+Alex+T%2E%22">Kuvarega, Alex T.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kuvarat@unisa.ac.za</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Inorganic+Chemistry+Communications%22">Inorganic Chemistry Communications</searchLink>. May2023, Vol. 151, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Tungsten+oxides%22">Tungsten oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Photodegradation%22">Photodegradation</searchLink><br /><searchLink fieldCode="DE" term="%22Water+use%22">Water use</searchLink><br /><searchLink fieldCode="DE" term="%22Precipitation+%28Chemistry%29%22">Precipitation (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Rhodamine+B%22">Rhodamine B</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrides%22">Nitrides</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • WO 3 /g-C 3 N 4 was synthesized using precipitation and calcination method. • Chemical integration of WO 3 and g-C 3 N 4 improved the photocatalysis process. • Within 120 min, the photodegradation of tartrazine and rhodamine B was 99%. • Possible degradation mechanism using WO 3 /g-C 3 N 4 was proposed. • WO 3 /g-C 3 N 4 was stable after 5 photodegradation cycles with RSD% of 2.6%. The coupling of semiconductor photocatalysts is a promising technique for reducing rapid recombination of photo-generated electron-hole and improving the separation of photoinduced charges in photodegradation processes. The heterojunction WO 3 /g-C 3 N 4 was synthesized using a superficial precipitation and calcination method for the photodegradation of selected dyes and pharmaceuticals in water. The integration of WO 3 and g-C 3 N 4 was confirmed using characterization techniques such as FTIR, Raman, BET, UV–Vis, TGA, XRD, XPS and HR-TEM. Zetapotential analysis revealed improved surface area, less negative charge, and enhanced conductivity of the heterojunction photocatalyst. The electrochemical analysis further confirmed separation of electron/hole pairs and faster interfacial charge transfer within the hybrid photocatalyst. An improvement in the recombination of electrons and holes in photocatalysts was proven by PL analysis. Both Rhodamine B and tartrazine were completely photodegraded within 120 min. Carbamazepine and ibuprofen needed more reaction time to be fully degraded using WG photocatalyst. Hydroxyl radicals, holes and superoxide participated in the photodegradation process where the hydroxyl radicals were the dominant species. The hybrid photocatalyst produced stable photodegradation performance for five cycles and the relative standard deviation percentage (RSD%) was 2.68. The WO 3 /g-C 3 N 4 photocatalyst is a promising visible light active material for the treatment of pharmaceuticals and dyes in water using the photocatalysis process. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Inorganic Chemistry Communications 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.inoche.2023.110637 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Tungsten oxides Type: general – SubjectFull: Photodegradation Type: general – SubjectFull: Water use Type: general – SubjectFull: Precipitation (Chemistry) Type: general – SubjectFull: Rhodamine B Type: general – SubjectFull: Nitrides Type: general Titles: – TitleFull: Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zwane, Simphiwe – PersonEntity: Name: NameFull: Dlamini, Derrick S. – PersonEntity: Name: NameFull: Mamba, Bhekie B. – PersonEntity: Name: NameFull: Kuvarega, Alex T. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 13877003 Numbering: – Type: volume Value: 151 Titles: – TitleFull: Inorganic Chemistry Communications Type: main |
| ResultId | 1 |
