Pepsin-Assisted Synthesis of Nano-Spinel (CoAl2O4) for Photodegradation of Congo Red, Methylene Blue and Methyl Orange.
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| Title: | Pepsin-Assisted Synthesis of Nano-Spinel (CoAl |
|---|---|
| Authors: | Gul, Enis Muhammet1 (AUTHOR), Dumanli, Fatma Tugce Senberber2 (AUTHOR), Derun, Emek Moroydor1 (AUTHOR) moroydor@yildiz.edu.tr |
| Source: | Water, Air & Soil Pollution. Jul2026, Vol. 237 Issue 13, p1-18. 18p. |
| Subject Terms: | *Photocatalysis, *Photodegradation, Dyes & dyeing, Aluminum oxide, Congo red (Staining dye), Enzymes, Basic dyes, Spinel group |
| Abstract: | The spinel-type of blue-coloured cobalt aluminate (CoAl2O4) was synthesized with a cubic lattice structure, exhibiting enhanced photocatalytic properties by using a pepsin-assisted co-precipitation procedure. The optimum sample prepared at 1200 ºC and 3 h, following an ultrasound treatment with pepsin enzyme, exhibited nanoparticle formation in the 25–40 nm range. The highest removal percentages were found as 87.41% for Congo Red (CR), 74.49% for Methylene Blue (MB), and 68.35% for Methyl Orange (MO). The photodegradation kinetics were found to be best described by the first-order Langmuir–Hinshelwood model. The photocatalytic half-life (t0.5) values were found as 63.59, 192.54 and 216.61 min for the CR, MB and MO, respectively. Comprehensive radical trapping experiments and mechanism analysis revealed that while photogenerated holes (h+) are the primary reactive species for CR, hydroxyl radicals (.OH) play a dominant role in the degradation of the cationic MB dye. FT-IR analysis of the recycled catalyst confirmed the structural integrity and stability of the CoAl2O4 nano-spinels after three cycles. These findings suggest that pepsin-assisted CoAl2O4 is a robust and versatile photocatalyst for the effective degradation of diverse organic pollutants in wastewater treatment. [ABSTRACT FROM AUTHOR] |
| Copyright of Water, Air & Soil Pollution is the property of Springer Nature 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: | GreenFILE |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 193806557 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Pepsin-Assisted Synthesis of Nano-Spinel (CoAl<subscript>2</subscript>O<subscript>4</subscript>) for Photodegradation of Congo Red, Methylene Blue and Methyl Orange. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gul%2C+Enis+Muhammet%22">Gul, Enis Muhammet</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dumanli%2C+Fatma+Tugce+Senberber%22">Dumanli, Fatma Tugce Senberber</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Derun%2C+Emek+Moroydor%22">Derun, Emek Moroydor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> moroydor@yildiz.edu.tr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Water%2C+Air+%26+Soil+Pollution%22">Water, Air & Soil Pollution</searchLink>. Jul2026, Vol. 237 Issue 13, p1-18. 18p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Photodegradation%22">Photodegradation</searchLink><br /><searchLink fieldCode="DE" term="%22Dyes+%26+dyeing%22">Dyes & dyeing</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+oxide%22">Aluminum oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Congo+red+%28Staining+dye%29%22">Congo red (Staining dye)</searchLink><br /><searchLink fieldCode="DE" term="%22Enzymes%22">Enzymes</searchLink><br /><searchLink fieldCode="DE" term="%22Basic+dyes%22">Basic dyes</searchLink><br /><searchLink fieldCode="DE" term="%22Spinel+group%22">Spinel group</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The spinel-type of blue-coloured cobalt aluminate (CoAl2O4) was synthesized with a cubic lattice structure, exhibiting enhanced photocatalytic properties by using a pepsin-assisted co-precipitation procedure. The optimum sample prepared at 1200 ºC and 3 h, following an ultrasound treatment with pepsin enzyme, exhibited nanoparticle formation in the 25–40 nm range. The highest removal percentages were found as 87.41% for Congo Red (CR), 74.49% for Methylene Blue (MB), and 68.35% for Methyl Orange (MO). The photodegradation kinetics were found to be best described by the first-order Langmuir–Hinshelwood model. The photocatalytic half-life (t0.5) values were found as 63.59, 192.54 and 216.61 min for the CR, MB and MO, respectively. Comprehensive radical trapping experiments and mechanism analysis revealed that while photogenerated holes (h+) are the primary reactive species for CR, hydroxyl radicals (.OH) play a dominant role in the degradation of the cationic MB dye. FT-IR analysis of the recycled catalyst confirmed the structural integrity and stability of the CoAl2O4 nano-spinels after three cycles. These findings suggest that pepsin-assisted CoAl2O4 is a robust and versatile photocatalyst for the effective degradation of diverse organic pollutants in wastewater treatment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Water, Air & Soil Pollution is the property of Springer Nature 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: 10.1007/s11270-026-09472-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 1 Subjects: – SubjectFull: Photocatalysis Type: general – SubjectFull: Photodegradation Type: general – SubjectFull: Dyes & dyeing Type: general – SubjectFull: Aluminum oxide Type: general – SubjectFull: Congo red (Staining dye) Type: general – SubjectFull: Enzymes Type: general – SubjectFull: Basic dyes Type: general – SubjectFull: Spinel group Type: general Titles: – TitleFull: Pepsin-Assisted Synthesis of Nano-Spinel (CoAl2O4) for Photodegradation of Congo Red, Methylene Blue and Methyl Orange. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gul, Enis Muhammet – PersonEntity: Name: NameFull: Dumanli, Fatma Tugce Senberber – PersonEntity: Name: NameFull: Derun, Emek Moroydor IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00496979 Numbering: – Type: volume Value: 237 – Type: issue Value: 13 Titles: – TitleFull: Water, Air & Soil Pollution Type: main |
| ResultId | 1 |
