Linden, JB;
Larsson, M;
Kaur, S;
Nosrati, A;
Nyden, M;
(2016)
Glutaraldehyde-crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings.
Journal of Applied Polymer Science
, 133
(37)
10.1002/app.43954.
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Abstract
Nano-thin coatings of glutaraldehyde (GA)-crosslinked polyethyleneimine (PEI) are extremely selective and effective in binding copper from seawater. Here it was demonstrated that GA-PEI performs significantly different from PEI. The copper-selectivity of self-assembled PEI coatings on silicon substrates was greatly improved by GA-crosslinking. After submersion in artificial seawater containing 200 ppb copper and equimolar amounts of 11 competing ions only copper and trace amounts of Zn were detected in the GA-crosslinked coatings, while for non-crosslinked PEI there was about 30% Zn present relative to copper. The coatings were demonstrated to be highly stable under acidic conditions and retained their copper-binding selectivity after repeated cycles of binding and acid-mediated elution. After self-assembly of the GA-crosslinked coating on mesoporous diatomaceous earth particles, significant amounts of copper could be extracted from 200 ppb in artificial seawater and eluted under acidic pH.
| Type: | Article |
|---|---|
| Title: | Glutaraldehyde-crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/app.43954 |
| Publisher version: | http://doi.org/10.1002/app.43954 |
| Language: | English |
| Additional information: | © 2016 Wiley Periodicals, Inc. This is the peer reviewed version of the following article: Linden, JB; Larsson, M; Kaur, S; Nosrati, A; Nyden, M; (2016) Glutaraldehyde-crosslinking for improved copper absorption selectivity and chemical stability of polyethyleneimine coatings. JOURNAL OF APPLIED POLYMER SCIENCE , 133 (37) 10.1002/app.43954, which has been published in final form at http://doi.org/10.1002/app.43954. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
| Keywords: | Science & Technology, Physical Sciences, Polymer Science, coatings, crosslinking, properties and characterization, self-assembly, surfaces and interfaces, HEAVY-METAL IONS, SILICA-POLYAMINE COMPOSITE, WASTE-WATER, AQUEOUS-SOLUTIONS, ADSORPTION, REMOVAL, EFFICIENCY, CHEMISTRY, RECOVERY, PEI |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1509835 |
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