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Single solvent synthesis of lithium-selective hydrogen manganese oxide (HMO)-based mixed matrix membranes

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dc.contributor.authorSaif, Hafiz Muhammad
dc.contributor.authorGebretatios, Amanuel Gidey
dc.contributor.authorHuertas Penela, Rosa María
dc.contributor.authorCrespo, João Goulão
dc.contributor.authorPawlowski, Sylwin
dc.date.accessioned2025-09-26T08:59:09Z
dc.date.available2025-09-26T08:59:09Z
dc.date.issued2025-03-29
dc.descriptionThe registered version of this article, first published in Green Chemical Engineering (2025) , is available online at the publisher's website: https://doi.org/10.1016/j.gce.2025.03.005
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en Green Chemical Engineering (2025), está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.gce.2025.03.005
dc.descriptionThis work received funding from the FCT/MCTES under grant agreement No. PTDC/EQU-EQU/6193/2020 (Se(L)ect(i)vity) and LISBOA2030-FEDER-00729800 (no 16144-Li-cycle). This work received funding from the European Union Horizon 2020 research and innovation program under grant agreement No. 869467 (SEArcularMINE). This work was also supported by the Associate Laboratory for Green Chemistry-LAQV, which is financed by national Portuguese funds from FCT/MCTES (UIDB/50006/2020). Hafiz Muhammad Saif Ullah Saleem acknowledges FCT/MCTES for his PhD grant 2020.09828.BD (https://doi.org/10.54499/2020.09828.BD). The authors acknowledge Professor Vítor D. Alves, from Instituto Superior de Agronomia, Universidade de Lisboa, for providing support to analyze the mechanical properties of the membranes.
dc.description.abstractThe rising lithium-ion battery market drives lithium demand and requires efficient and selective lithium recovery methods from aqueous sources. Membrane technologies can address environmental and inherent efficiency issues in conventional lithium extraction methods. This study presents the synthesis of novel lithium-selective mixed matrix membranes (MMMs) by integrating 0–30 wt% of a lithium selective filler named hydrogen manganese oxide (HMO) into a sulfonated polyethersulfone (SPES)-Nafion polymer matrix. The membranes were produced by casting and thoroughly examined to assess their chemical, physical, morphological, thermal, and mechanical characteristics. The transport of lithium across membranes was evaluated in diffusion and electro-diffusion studies. The membrane containing 20 wt% of HMO exhibited the highest ideal selectivity values, which were 1.05 for Li+/K+, 1.20 for Li+/Na+, and 13.36 for Li+/Mg2+; and more than 97% increase in lithium-ion conductivity when compared with the control membrane without HMO. In diffusion experiments, the binary separation factors for Li+/K+, Li+/Na+, and Li+/Mg2+ were 0.71, 1.52, and 11.83, respectively, while under electro-diffusion conditions, the corresponding values were 0.82, 1.55, and 9.88. Above 20 wt% of HMO, membranes lose their separation capacity as HMO aggregates inside the membrane structure. The higher selectivity of membranes towards Li+ in the presence of Mg2+ is due to magnesium's larger hydrated radius and higher hydration energy compared to lithium. Overall, the prepared membranes demonstrated a promising potential for green lithium recovery. This study facilitates the advancement of sustainable lithium-selective MMM synthesis.en
dc.description.provenanceMade available in DSpace on 2025-09-26T08:59:09Z (GMT). No. of bitstreams: 1 Huertas Penela Rosa M_Single solvent synthesi.pdf: 4266672 bytes, checksum: c71288c5ed6ba0c219b892d3cad5f421 (MD5) Previous issue date: 2025-03-29en
dc.description.versionversión publicada
dc.identifier.citationSaif, H. M., Gebretatios, A. G., Huertas, R. M., Crespo, J. G., & Pawlowski, S. (2025). Single solvent synthesis of lithium-selective hydrogen manganese oxide (HMO)-based mixed matrix membranes. Green Chemical Engineering. https://doi.org/10.1016/J.GCE.2025.03.005
dc.identifier.doihttps://doi.org/10.1016/j.gce.2025.03.005
dc.identifier.issn2666-9528, 2096-9147
dc.identifier.urihttps://hdl.handle.net/20.500.14468/30129
dc.journal.titleGreen Chemical Engineering
dc.language.isoen
dc.publisherKeAi; Elsevier
dc.relation.centerFacultad de Ciencias
dc.relation.departmentCiencias y Técnicas Fisicoquímicas
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject23 Química
dc.subject.keywordsLithium recoveryen
dc.subject.keywordsLithium-ion sieveen
dc.subject.keywordsHydrogen manganese oxideen
dc.subject.keywordsNafionen
dc.subject.keywordsSulfonated polyethersulfoneen
dc.titleSingle solvent synthesis of lithium-selective hydrogen manganese oxide (HMO)-based mixed matrix membranesen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication559a1645-c7e7-4e61-a6dc-ff71cd98d6f5
relation.isAuthorOfPublication.latestForDiscovery559a1645-c7e7-4e61-a6dc-ff71cd98d6f5
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