Enhanced covalent p-phenylenediamine crosslinked graphene oxide membranes: Towards superior contaminant removal from wastewaters and improved membrane reusability.
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| Title: | Enhanced covalent p-phenylenediamine crosslinked graphene oxide membranes: Towards superior contaminant removal from wastewaters and improved membrane reusability. |
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| Authors: | Kandjou, Vepika1 (AUTHOR), Perez-Mas, Ana M.1 (AUTHOR), Acevedo, B.1 (AUTHOR), Hernaez, M.1 (AUTHOR), Mayes, Andrew G.2 (AUTHOR), Melendi-Espina, Sonia1 (AUTHOR) s.melendi-espina@uea.ac.uk |
| Source: | Journal of Hazardous Materials. Dec2019, Vol. 380, pN.PAG-N.PAG. 1p. |
| Subjects: | Phenylenediamines, Graphene oxide, Water purification, Membrane separation, X-ray photoelectron spectroscopy, Contact angle, Methylene blue |
| Abstract: | • Dip coating and layer-by-layer have been proven as effective deposition methods. • Uncrosslinked and PPD crosslinked GO membranes have been successfully fabricated. • Crosslinker impact is significant in enhanced membrane separation performance. • Up to 100% MB contaminant removal was achieved for crosslinked membranes. • PPD-GO crosslinked membranes are suitable to reuse for multiple cycles. The increasing depletion of freshwater necessitates the re-use and purification of wastewaters. Among the existing separation membrane materials, graphene oxide (GO) is a promising candidate, owing to its tunable physicochemical properties. However, the widening of GO membranes pore gap in aqueous environments is a major limitation. Crosslinking agents can be incorporated to alleviate this problem. This study describes a comparative analysis of uncrosslinked and p-Phenylenediamine (PPD) crosslinked GO membranes' water purification performance. Dip-coating and dip-assisted layer-by-layer methods were used to fabricate the uncrosslinked and crosslinked membranes respectively. The covalent interaction between GO and PPD was confirmed by Fourier Transform Infra-Red and X-ray Photoelectron Spectroscopy. The excellent membrane topographical continuity and intactness was assessed by means of Scanning Electron Microscopy, while water contact angle measurements were undertaken to evaluate and confirm membrane hydrophilicity. The improvement impact of the crosslinker was manifested on the enhancement of the stability and performance of the membranes during nanofiltration tests of aqueous solutions of methylene blue in a homemade nanofiltration cell operated at 1 bar. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Hazardous Materials 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: 138852496 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Enhanced covalent p-phenylenediamine crosslinked graphene oxide membranes: Towards superior contaminant removal from wastewaters and improved membrane reusability. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kandjou%2C+Vepika%22">Kandjou, Vepika</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Perez-Mas%2C+Ana+M%2E%22">Perez-Mas, Ana M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Acevedo%2C+B%2E%22">Acevedo, B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hernaez%2C+M%2E%22">Hernaez, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mayes%2C+Andrew+G%2E%22">Mayes, Andrew G.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Melendi-Espina%2C+Sonia%22">Melendi-Espina, Sonia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> s.melendi-espina@uea.ac.uk</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Dec2019, Vol. 380, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Phenylenediamines%22">Phenylenediamines</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene+oxide%22">Graphene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Water+purification%22">Water purification</searchLink><br /><searchLink fieldCode="DE" term="%22Membrane+separation%22">Membrane separation</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+photoelectron+spectroscopy%22">X-ray photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Contact+angle%22">Contact angle</searchLink><br /><searchLink fieldCode="DE" term="%22Methylene+blue%22">Methylene blue</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • Dip coating and layer-by-layer have been proven as effective deposition methods. • Uncrosslinked and PPD crosslinked GO membranes have been successfully fabricated. • Crosslinker impact is significant in enhanced membrane separation performance. • Up to 100% MB contaminant removal was achieved for crosslinked membranes. • PPD-GO crosslinked membranes are suitable to reuse for multiple cycles. The increasing depletion of freshwater necessitates the re-use and purification of wastewaters. Among the existing separation membrane materials, graphene oxide (GO) is a promising candidate, owing to its tunable physicochemical properties. However, the widening of GO membranes pore gap in aqueous environments is a major limitation. Crosslinking agents can be incorporated to alleviate this problem. This study describes a comparative analysis of uncrosslinked and p-Phenylenediamine (PPD) crosslinked GO membranes' water purification performance. Dip-coating and dip-assisted layer-by-layer methods were used to fabricate the uncrosslinked and crosslinked membranes respectively. The covalent interaction between GO and PPD was confirmed by Fourier Transform Infra-Red and X-ray Photoelectron Spectroscopy. The excellent membrane topographical continuity and intactness was assessed by means of Scanning Electron Microscopy, while water contact angle measurements were undertaken to evaluate and confirm membrane hydrophilicity. The improvement impact of the crosslinker was manifested on the enhancement of the stability and performance of the membranes during nanofiltration tests of aqueous solutions of methylene blue in a homemade nanofiltration cell operated at 1 bar. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Hazardous Materials 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.jhazmat.2019.120840 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Phenylenediamines Type: general – SubjectFull: Graphene oxide Type: general – SubjectFull: Water purification Type: general – SubjectFull: Membrane separation Type: general – SubjectFull: X-ray photoelectron spectroscopy Type: general – SubjectFull: Contact angle Type: general – SubjectFull: Methylene blue Type: general Titles: – TitleFull: Enhanced covalent p-phenylenediamine crosslinked graphene oxide membranes: Towards superior contaminant removal from wastewaters and improved membrane reusability. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kandjou, Vepika – PersonEntity: Name: NameFull: Perez-Mas, Ana M. – PersonEntity: Name: NameFull: Acevedo, B. – PersonEntity: Name: NameFull: Hernaez, M. – PersonEntity: Name: NameFull: Mayes, Andrew G. – PersonEntity: Name: NameFull: Melendi-Espina, Sonia IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 03043894 Numbering: – Type: volume Value: 380 Titles: – TitleFull: Journal of Hazardous Materials Type: main |
| ResultId | 1 |
