Flake-like tea-leaf-templated magnesium oxide for carbon dioxide adsorption
Flake-like mesoporous magnesium oxide (MgO-TLT) was prepared using a bio-templating method with tea leaves (TLTs) as the template. MgO-TLT exhibited smaller crystallites (7.52 nm) than MgO prepared using the thermal decomposition method (22.52 nm). These smaller crystallites led to more structural d...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit UTM Press
2022
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/97174/1/MuhammadArifAb2022_FlakelikeTeaLeafTemplatedMagnesium.pdf http://eprints.utm.my/id/eprint/97174/ https://mjcat.utm.my/index.php/MalJCat/article/view/161 |
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| Summary: | Flake-like mesoporous magnesium oxide (MgO-TLT) was prepared using a bio-templating method with tea leaves (TLTs) as the template. MgO-TLT exhibited smaller crystallites (7.52 nm) than MgO prepared using the thermal decomposition method (22.52 nm). These smaller crystallites led to more structural defects in the adsorbent and a high basic site density; consequently, MgO-TLT exhibited a high CO2-uptake capacity of 3.17 mmol/g, which is 12-times higher than that of MgO-TD at 1 atm and 300 K, despite its low surface area. Furthermore, based on its low surface area and high uptake capacity, MgO-TLT has an uptake capacity per surface area that is more than 15-times higher than that of MgO-TD, which supports the hypothesis that MgO-TLT possesses more surface defect sites that promote the attachment of CO2. This study revealed that TLT is a promising template for use in the bio-templating syntheses of MgO adsorbents with high surface reactivities and enhanced CO2-uptake capacities. |
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