Electron transfer degradation of ciprofloxacin by peroxydisulfate intercalated MgAlFe-layered double hydroxides: Roles of laminate structure and interlayer peroxydisulfate.
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| Title: | Electron transfer degradation of ciprofloxacin by peroxydisulfate intercalated MgAlFe-layered double hydroxides: Roles of laminate structure and interlayer peroxydisulfate. |
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| Authors: | Li, Chen1 (AUTHOR), Yan, Bing1 (AUTHOR), Xue, Tianshan2 (AUTHOR), Tao, Ranting1 (AUTHOR), Song, Zilong3 (AUTHOR), Qi, Fei4 (AUTHOR), Zhang, Fazhi1 (AUTHOR), Lei, Xiaodong1 (AUTHOR) leixd@mail.buct.edu.cn, Wang, Yiping1 (AUTHOR) wangyiping@buct.edu.cn |
| Source: | Separation & Purification Technology. May2023, Vol. 312, pN.PAG-N.PAG. 1p. |
| Subjects: | Charge exchange, Hydroxides, Ciprofloxacin, Laminated materials, Chemical bond lengths, Pollutants, Catalytic activity |
| Abstract: | [Display omitted] • Peroxydisulfate intercalated MgAlFe-LDH can efficiently degrade fluoroquinolones. • The contribution of SO 4 •−, •OH, O 2 •− and 1O 2 to CIP degradation is excluded. • CIP degradation by Fe-S 2 O 8 ·LDH-0.2 involves electron transfer mechanism. • The LDH laminate is important for electron transfer from CIP to interlayer PDS. • Common inorganic anions and NOM have little effect on CIP degradation. Peroxydisulfate intercalated MgAlFe-layered double hydroxides (S 2 O 8 ·LDHs) are synthesized by the one-step co-precipitation method. The Fe content in LDH laminates affects the insertion of S 2 O 8 2−, and further affects the catalytic activity of S 2 O 8 ·LDHs. Fe-S 2 O 8 ·LDH-0.2 with Fe/(Al + Fe) = 0.2 shows superior performance that 1 g/L of dosage leads to 99.55 % degradation of ciprofloxacin (CIP, 10 mg/L) within 60 min. It is fully clarified that electron transfer rather than SO 4 •−, •OH, O 2 •− and 1O 2 is responsible for CIP degradation. Interlayer S 2 O 8 2− with longer O O bond length than free S 2 O 8 2− exists in metastable form, which deprives electrons from the piperazine ring of CIP mainly through the transport of LDH laminates, leading to the degradation of CIP through the cleavage and oxidation of piperazine ring. The efficient degradation of other fluoroquinolones and the modest even negligible influence of Cl−, NO 3 –, HCO 3 –/CO 3 2– and natural organic matter on the performance prove the practical application potential of S 2 O 8 ·LDHs. This work not only provides an in-depth study on the degradation of emerging pollutants by PDS intercalated LDHs, but also provides some new insights into the non-radical mechanism. [ABSTRACT FROM AUTHOR] |
| Copyright of Separation & Purification Technology 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: 162179537 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Electron transfer degradation of ciprofloxacin by peroxydisulfate intercalated MgAlFe-layered double hydroxides: Roles of laminate structure and interlayer peroxydisulfate. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Chen%22">Li, Chen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Bing%22">Yan, Bing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Tianshan%22">Xue, Tianshan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tao%2C+Ranting%22">Tao, Ranting</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Zilong%22">Song, Zilong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Fei%22">Qi, Fei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Fazhi%22">Zhang, Fazhi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lei%2C+Xiaodong%22">Lei, Xiaodong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> leixd@mail.buct.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Yiping%22">Wang, Yiping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangyiping@buct.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Separation+%26+Purification+Technology%22">Separation & Purification Technology</searchLink>. May2023, Vol. 312, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Hydroxides%22">Hydroxides</searchLink><br /><searchLink fieldCode="DE" term="%22Ciprofloxacin%22">Ciprofloxacin</searchLink><br /><searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+bond+lengths%22">Chemical bond lengths</searchLink><br /><searchLink fieldCode="DE" term="%22Pollutants%22">Pollutants</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • Peroxydisulfate intercalated MgAlFe-LDH can efficiently degrade fluoroquinolones. • The contribution of SO 4 •−, •OH, O 2 •− and 1O 2 to CIP degradation is excluded. • CIP degradation by Fe-S 2 O 8 ·LDH-0.2 involves electron transfer mechanism. • The LDH laminate is important for electron transfer from CIP to interlayer PDS. • Common inorganic anions and NOM have little effect on CIP degradation. Peroxydisulfate intercalated MgAlFe-layered double hydroxides (S 2 O 8 ·LDHs) are synthesized by the one-step co-precipitation method. The Fe content in LDH laminates affects the insertion of S 2 O 8 2−, and further affects the catalytic activity of S 2 O 8 ·LDHs. Fe-S 2 O 8 ·LDH-0.2 with Fe/(Al + Fe) = 0.2 shows superior performance that 1 g/L of dosage leads to 99.55 % degradation of ciprofloxacin (CIP, 10 mg/L) within 60 min. It is fully clarified that electron transfer rather than SO 4 •−, •OH, O 2 •− and 1O 2 is responsible for CIP degradation. Interlayer S 2 O 8 2− with longer O O bond length than free S 2 O 8 2− exists in metastable form, which deprives electrons from the piperazine ring of CIP mainly through the transport of LDH laminates, leading to the degradation of CIP through the cleavage and oxidation of piperazine ring. The efficient degradation of other fluoroquinolones and the modest even negligible influence of Cl−, NO 3 –, HCO 3 –/CO 3 2– and natural organic matter on the performance prove the practical application potential of S 2 O 8 ·LDHs. This work not only provides an in-depth study on the degradation of emerging pollutants by PDS intercalated LDHs, but also provides some new insights into the non-radical mechanism. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Separation & Purification Technology 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.seppur.2023.123385 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Charge exchange Type: general – SubjectFull: Hydroxides Type: general – SubjectFull: Ciprofloxacin Type: general – SubjectFull: Laminated materials Type: general – SubjectFull: Chemical bond lengths Type: general – SubjectFull: Pollutants Type: general – SubjectFull: Catalytic activity Type: general Titles: – TitleFull: Electron transfer degradation of ciprofloxacin by peroxydisulfate intercalated MgAlFe-layered double hydroxides: Roles of laminate structure and interlayer peroxydisulfate. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Chen – PersonEntity: Name: NameFull: Yan, Bing – PersonEntity: Name: NameFull: Xue, Tianshan – PersonEntity: Name: NameFull: Tao, Ranting – PersonEntity: Name: NameFull: Song, Zilong – PersonEntity: Name: NameFull: Qi, Fei – PersonEntity: Name: NameFull: Zhang, Fazhi – PersonEntity: Name: NameFull: Lei, Xiaodong – PersonEntity: Name: NameFull: Wang, Yiping IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 13835866 Numbering: – Type: volume Value: 312 Titles: – TitleFull: Separation & Purification Technology Type: main |
| ResultId | 1 |
