Academic Journal
Enhancing surface charge density of Graphene Oxide membranes through Al(OH)4− anion incorporation for osmotic energy conversion
| العنوان: | Enhancing surface charge density of Graphene Oxide membranes through Al(OH)4− anion incorporation for osmotic energy conversion |
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| المؤلفون: | Aixalà‐Perelló, Anna, Raffone, Federico, Baudino, Luisa, Pedico, Alessandro, Serrapede, Mara, Cicero, Giancarlo, Lamberti, Andrea |
| المساهمون: | Aixalà‐perelló, Anna, Raffone, Federico, Baudino, Luisa, Pedico, Alessandro, Serrapede, Mara, Cicero, Giancarlo, Lamberti, Andrea |
| بيانات النشر: | Wiley-VCH GmbH |
| سنة النشر: | 2024 |
| المجموعة: | PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) |
| مصطلحات موضوعية: | 2D material, blue energy, graphene, ion separation, ion-exchange membranes |
| الوصف: | Graphene oxide (GO) has been extensively studied for fabricating ion exchange membranes. This material is of interest due to its surface-governed charge which, combined with the interlayer distance between the GO flakes stack, offers ion selectivity. However, obtaining high-performing membranes with high ion selectivity and low ionic resistance remains challenging. To address this issue, Al(OH)4− anions are incorporated into graphene oxide membranes to increase their spontaneous negative surface charge. The anions are successfully formed and encapsulated through a reaction with the alumina support under alkaline conditions during the membrane fabrication. A modeling of the system proves the anchoring of the Al(OH)4− anions within the GO matrix. The incorporation of these anions significantly improves the permselectivity and reduces the ionic resistance, reaching approximately 95% and 2 Ω cm2, respectively. The GO-modified membranes also present mono-valent selectivity, which can boost reverse electrodialysis power densities. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:001216552900001; volume:5; issue:9; firstpage:1; lastpage:11; numberofpages:11; journal:ADVANCED ENERGY AND SUSTAINABILITY RESEARCH; https://hdl.handle.net/11583/2995163 |
| DOI: | 10.1002/aesr.202400090 |
| الاتاحة: | https://hdl.handle.net/11583/2995163 https://doi.org/10.1002/aesr.202400090 https://onlinelibrary.wiley.com/doi/10.1002/aesr.202400090 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.F8E0D4CE |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/aesr.202400090 |
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