Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent
Due to its layered structure, layered double hydroxides (LDHs) generally prefer to form either "sand rose" or platelet-like morphologies. To the best of our knowledge, nano-sized spherical LDHs have not been previously reported. In this work, we present the first successful synthesis of na...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797105475100082176 |
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| author | Wang, Q Gao, Y Luo, J Zhong, Z Borgna, A Guo, Z O'Hare, D |
| author_facet | Wang, Q Gao, Y Luo, J Zhong, Z Borgna, A Guo, Z O'Hare, D |
| author_sort | Wang, Q |
| collection | OXFORD |
| description | Due to its layered structure, layered double hydroxides (LDHs) generally prefer to form either "sand rose" or platelet-like morphologies. To the best of our knowledge, nano-sized spherical LDHs have not been previously reported. In this work, we present the first successful synthesis of nano-sized spherical Mg3Al-CO3 LDH using a facile isoelectric point (IEP) method. SEM and TEM analyses confirmed that the size of the nanospheres is very uniform, with an average value of ca. 20 nm. Furthermore, a mesoporous LDH sample composed of the above synthesized uniform nano-spheres can be prepared, and this material showed a H1 type hysteresis loop in the N2 BET analysis. Such mesoporous LDH possesses large mesopores (18 nm) and a high surface area (103 m2 g-1), which we believe make it a promising adsorbent, catalyst, or support material. We demonstrated that its CO2 capture capacity is 0.83 mmol g-1 at 200 °C and 1 atm and it can be further increased up to 1.21 mmol g-1 by doping with 20 wt% K2CO3. © 2013 The Royal Society of Chemistry. |
| first_indexed | 2024-03-07T06:48:06Z |
| format | Journal article |
| id | oxford-uuid:fb8b4b38-8feb-4fd6-936e-49840f1f2de9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:48:06Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:fb8b4b38-8feb-4fd6-936e-49840f1f2de92022-03-27T13:14:36ZSynthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbentJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fb8b4b38-8feb-4fd6-936e-49840f1f2de9EnglishSymplectic Elements at Oxford2013Wang, QGao, YLuo, JZhong, ZBorgna, AGuo, ZO'Hare, DDue to its layered structure, layered double hydroxides (LDHs) generally prefer to form either "sand rose" or platelet-like morphologies. To the best of our knowledge, nano-sized spherical LDHs have not been previously reported. In this work, we present the first successful synthesis of nano-sized spherical Mg3Al-CO3 LDH using a facile isoelectric point (IEP) method. SEM and TEM analyses confirmed that the size of the nanospheres is very uniform, with an average value of ca. 20 nm. Furthermore, a mesoporous LDH sample composed of the above synthesized uniform nano-spheres can be prepared, and this material showed a H1 type hysteresis loop in the N2 BET analysis. Such mesoporous LDH possesses large mesopores (18 nm) and a high surface area (103 m2 g-1), which we believe make it a promising adsorbent, catalyst, or support material. We demonstrated that its CO2 capture capacity is 0.83 mmol g-1 at 200 °C and 1 atm and it can be further increased up to 1.21 mmol g-1 by doping with 20 wt% K2CO3. © 2013 The Royal Society of Chemistry. |
| spellingShingle | Wang, Q Gao, Y Luo, J Zhong, Z Borgna, A Guo, Z O'Hare, D Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title | Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title_full | Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title_fullStr | Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title_full_unstemmed | Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title_short | Synthesis of nano-sized spherical Mg3Al-CO3 layered double hydroxide as a high-temperature CO2 adsorbent |
| title_sort | synthesis of nano sized spherical mg3al co3 layered double hydroxide as a high temperature co2 adsorbent |
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