Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies.
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| Title: | Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies. |
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| Authors: | Zia, Jannatun1, Ajeer, Mohamed1, Riaz, Ufana1 uriaz@jmi.ac.in |
| Source: | Journal of Environmental Sciences (Elsevier). May2019, Vol. 79, p161-173. 13p. |
| Subjects: | Manganese oxides, Semiconductor characterization, Conducting polymers, Bisphenol A, Polypyrrole, Photocatalysis |
| Abstract: | Abstract Although manganese oxides are known for their semiconductor characteristics, the photocatalytic performance of conducting polymer intercalated K-Birnessite (K-Bi) has not been explored till date. With the view to design a visible light driven organic–inorganic hybrid photocatalyst for rapid degradation of Bisphenol A (BPA), the present work reports the ultrasound-assisted green synthesis of K-Bi/polypyrrole (Ppy) nanohybrids. The loading of Ppy in K-Bi was confirmed by thermogravimetric analysis while the formation of organic–inorganic hybrid was confirmed by infrared spectroscopy. K-Bi revealed a band gap of 2.8 eV while for the nanohybrids it was found to be ranging between 2.4 and 1.6 eV. X-ray diffraction studies confirmed partial intercalation of Ppy chains in the inter-layer space of K-Bi. High resolution transmission electron microscopy and scanning electron microscopy studies showed mixed morphology of K-Birnessite/Ppy nanohybrids. Rapid degradation of BPA was observed under visible irradiation in presence of K-Bi/Ppy nanohybrids and almost 90% degradation of 20 mg/L BPA solution was achieved within 120 min. The degradation was found to follow pseudo-first order kinetics and the degraded fragments were identified using liquid chromatography-mass spectrometry. Degradation pathway was proposed based on density-functional theory calculations of fukui index predicting the radical easy-attacking (f0) and (f-) sites in BPA. Graphical abstract Unlabelled Image [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Environmental Sciences (Elsevier) 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 |
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| Items | – Name: Title Label: Title Group: Ti Data: Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zia%2C+Jannatun%22">Zia, Jannatun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ajeer%2C+Mohamed%22">Ajeer, Mohamed</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Riaz%2C+Ufana%22">Riaz, Ufana</searchLink><relatesTo>1</relatesTo><i> uriaz@jmi.ac.in</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Sciences+%28Elsevier%29%22">Journal of Environmental Sciences (Elsevier)</searchLink>. May2019, Vol. 79, p161-173. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Manganese+oxides%22">Manganese oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+characterization%22">Semiconductor characterization</searchLink><br /><searchLink fieldCode="DE" term="%22Conducting+polymers%22">Conducting polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Bisphenol+A%22">Bisphenol A</searchLink><br /><searchLink fieldCode="DE" term="%22Polypyrrole%22">Polypyrrole</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract Although manganese oxides are known for their semiconductor characteristics, the photocatalytic performance of conducting polymer intercalated K-Birnessite (K-Bi) has not been explored till date. With the view to design a visible light driven organic–inorganic hybrid photocatalyst for rapid degradation of Bisphenol A (BPA), the present work reports the ultrasound-assisted green synthesis of K-Bi/polypyrrole (Ppy) nanohybrids. The loading of Ppy in K-Bi was confirmed by thermogravimetric analysis while the formation of organic–inorganic hybrid was confirmed by infrared spectroscopy. K-Bi revealed a band gap of 2.8 eV while for the nanohybrids it was found to be ranging between 2.4 and 1.6 eV. X-ray diffraction studies confirmed partial intercalation of Ppy chains in the inter-layer space of K-Bi. High resolution transmission electron microscopy and scanning electron microscopy studies showed mixed morphology of K-Birnessite/Ppy nanohybrids. Rapid degradation of BPA was observed under visible irradiation in presence of K-Bi/Ppy nanohybrids and almost 90% degradation of 20 mg/L BPA solution was achieved within 120 min. The degradation was found to follow pseudo-first order kinetics and the degraded fragments were identified using liquid chromatography-mass spectrometry. Degradation pathway was proposed based on density-functional theory calculations of fukui index predicting the radical easy-attacking (f0) and (f-) sites in BPA. Graphical abstract Unlabelled Image [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Environmental Sciences (Elsevier) 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.jes.2018.11.021 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 161 Subjects: – SubjectFull: Manganese oxides Type: general – SubjectFull: Semiconductor characterization Type: general – SubjectFull: Conducting polymers Type: general – SubjectFull: Bisphenol A Type: general – SubjectFull: Polypyrrole Type: general – SubjectFull: Photocatalysis Type: general Titles: – TitleFull: Visible–light driven photocatalytic degradation of bisphenol-A using ultrasonically synthesized polypyrrole/K-birnessite nanohybrids: Experimental and DFT studies. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zia, Jannatun – PersonEntity: Name: NameFull: Ajeer, Mohamed – PersonEntity: Name: NameFull: Riaz, Ufana IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 10010742 Numbering: – Type: volume Value: 79 Titles: – TitleFull: Journal of Environmental Sciences (Elsevier) Type: main |
| ResultId | 1 |
