Post-transition metal/polymer composites for the separation and sensing of alkali metal ions

Merhebi, S; Mohammad, M; Mayyas, M; Abbasi, R; Zhang, C; Cai, S; Centurion, F; Xie, W; Cao, Z; Tang, J; Rahim, MA; Zhang, J; Razmjou, A; Leslie, G; Kalantar-Zadeh, K; Tang, J; Allioux, FM

Post-transition metal/polymer composites for the separation and sensing of alkali metal ions

Merhebi, S Mohammad, M Mayyas, M Abbasi, R Zhang, C Cai, S Centurion, F Xie, W Cao, Z Tang, J Rahim, MA Zhang, J Razmjou, A Leslie, G Kalantar-Zadeh, K Tang, J Allioux, FM

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: Journal of Materials Chemistry A, 2021, 9, (35), pp. 19854-19864
Issue Date:: 2021-09-21

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Field	Value	Language
dc.contributor.author	Merhebi, S
dc.contributor.author	Mohammad, M
dc.contributor.author	Mayyas, M
dc.contributor.author	Abbasi, R
dc.contributor.author	Zhang, C
dc.contributor.author	Cai, S
dc.contributor.author	Centurion, F
dc.contributor.author	Xie, W
dc.contributor.author	Cao, Z
dc.contributor.author	Tang, J
dc.contributor.author	Rahim, MA
dc.contributor.author	Zhang, J
dc.contributor.author	Razmjou, A
dc.contributor.author	Leslie, G
dc.contributor.author	Kalantar-Zadeh, K
dc.contributor.author	Tang, J
dc.contributor.author	Allioux, FM
dc.date.accessioned	2021-10-20T04:23:33Z
dc.date.available	2021-10-20T04:23:33Z
dc.date.issued	2021-09-21
dc.identifier.citation	Journal of Materials Chemistry A, 2021, 9, (35), pp. 19854-19864
dc.identifier.issn	2050-7488
dc.identifier.issn	2050-7496
dc.identifier.uri	http://hdl.handle.net/10453/151165
dc.description.abstract	The separation and sensing of alkali metal ions from aqueous lithium resources is of great importance for building future renewable and lithium-based energy storage technologies. As such, interest arises for the development of functional composites selective to ionic lithium (Li+) over sodium (Na+) and potassium (K+) that allows for a range of low carbon-footprint sensing and recovery processes. Here, selective separation of Li+from aqueous mixtures of Na+and K+ions using polyvinyl alcohol/maleic acid composites was enhanced by the inclusion as nano-additives of post-transition metals gallium (Ga) and indium (In), together with their alloys and oxidized species, in the composite casting process. The co-addition of Ga and In resulted in the spontaneous formation of Ga oxides and hydroxides while In remained in the metallic state. This Ga-In composite was stable in aqueous solutions containing a high concentration (0.1 M) of mixed alkali metal ions over 5 days and achieved exceptionally high selectivities of Li+over Na+(3.8 ± 0.1) and K+(7.1 ± 0.1). Results from an electrochemical sensing platform technique revealed that Li+selectivity was in the same order as the diffusion rates. This work demonstrated that the low-melting-point post-transition metal alloy enables a one-step low energy fabrication of selective polymeric composites with diverse applications for energy, sensing and separation industries. The work has implications for the efficient manufacture of renewable and lithium-based energy storage technologies.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	Journal of Materials Chemistry A
dc.relation.isbasedon	10.1039/d1ta02664j
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0303 Macromolecular and Materials Chemistry, 0912 Materials Engineering, 0915 Interdisciplinary Engineering
dc.title	Post-transition metal/polymer composites for the separation and sensing of alkali metal ions
dc.type	Journal Article
utslib.citation.volume	9
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0912 Materials Engineering
utslib.for	0915 Interdisciplinary Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2021-10-20T04:23:32Z
pubs.issue	35
pubs.publication-status	Published
pubs.volume	9
utslib.citation.issue	35

Abstract:

The separation and sensing of alkali metal ions from aqueous lithium resources is of great importance for building future renewable and lithium-based energy storage technologies. As such, interest arises for the development of functional composites selective to ionic lithium (Li+) over sodium (Na+) and potassium (K+) that allows for a range of low carbon-footprint sensing and recovery processes. Here, selective separation of Li+from aqueous mixtures of Na+and K+ions using polyvinyl alcohol/maleic acid composites was enhanced by the inclusion as nano-additives of post-transition metals gallium (Ga) and indium (In), together with their alloys and oxidized species, in the composite casting process. The co-addition of Ga and In resulted in the spontaneous formation of Ga oxides and hydroxides while In remained in the metallic state. This Ga-In composite was stable in aqueous solutions containing a high concentration (0.1 M) of mixed alkali metal ions over 5 days and achieved exceptionally high selectivities of Li+over Na+(3.8 ± 0.1) and K+(7.1 ± 0.1). Results from an electrochemical sensing platform technique revealed that Li+selectivity was in the same order as the diffusion rates. This work demonstrated that the low-melting-point post-transition metal alloy enables a one-step low energy fabrication of selective polymeric composites with diverse applications for energy, sensing and separation industries. The work has implications for the efficient manufacture of renewable and lithium-based energy storage technologies.

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http://hdl.handle.net/10453/151165