Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration
| العنوان: | Selective Lithium Adsorption of Silicon Oxide Coated Lithium Aluminum Layered Double Hydroxide Nanocrystals and Their Regeneration |
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| المؤلفون: | Ji-Hyun Cha, Yongju Lee, Duk-Young Jung |
| المصدر: | Chemistry – An Asian Journal. 16:974-980 |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Aqueous solution, 010405 organic chemistry, Organic Chemistry, Inorganic chemistry, chemistry.chemical_element, General Chemistry, 010402 general chemistry, 01 natural sciences, Biochemistry, 0104 chemical sciences, chemistry.chemical_compound, Adsorption, chemistry, Nanocrystal, Desorption, Hydroxide, Lithium chloride, Lithium, Selectivity |
| الوصف: | Silicon oxide-coated lithium aluminum layered double hydroxide (Lix Al2 -LDH@SiO2 ) nanocrystals (NCs) are investigated to selectively separate lithium cations in aqueous lithium resources. We directly synthesized Lix Al2 -LDH NC arrays by oxidation of aluminum foil substrate under a urea and lithium solution. Various lithium salts, including Cl- , CO32- , NO3- , and SO42- , were applied in aqueous solution to confirm the anion effect on the captured and released lithium quantity of the Lix Al2 -LDH NCs. In a 5% solution of sulfate ions mix with lithium chloride, the Lix Al2 -LDH NCs separated a larger quantity of lithium than in other anion conditions. To enhance regeneration stability and lithium selectivity, thin layers of SiO2 were coated onto the Lix Al2 -LDH nanostructure arrays for inhibition of nanostructure destruction after desorption of lithium cations in hot water. The Lix Al2 -LDH@SiO2 nanostructures showed enhanced properties for lithium adsorption, including increase of stable regeneration cycles from three to five cycles, and they showed high lithium selectivity in the Mg2+ , Na+ , and K+ cation mixed aqueous resource. Our nanostructured LDH lithium adsorbents would provide a facile and efficient application for cost-efficient and large-scale lithium production. |
| تدمد: | 1861-471X 1861-4728 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::278ef4caf61bfce0dbf7954c387ec4f3 https://doi.org/10.1002/asia.202100126 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....278ef4caf61bfce0dbf7954c387ec4f3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1861471X 18614728 |
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