Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials
MgAl2O4/C composite was prepared via a facile low-temperature non-hydrolytic sol-gel (NHSG) route, using Mg powder, Al wire and isopropanol as raw materials. The influence of types of magnesium source and heat treatment temperature on the synthesis and adsorption properties were investigated, and th...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222007092 |
| _version_ | 1797938776909021184 |
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| author | Qian Wu Feng Jiang Guo Feng Sanhai Wang Lifeng Miao Weihui Jiang Jian Liang Jianmin Liu |
| author_facet | Qian Wu Feng Jiang Guo Feng Sanhai Wang Lifeng Miao Weihui Jiang Jian Liang Jianmin Liu |
| author_sort | Qian Wu |
| collection | DOAJ |
| description | MgAl2O4/C composite was prepared via a facile low-temperature non-hydrolytic sol-gel (NHSG) route, using Mg powder, Al wire and isopropanol as raw materials. The influence of types of magnesium source and heat treatment temperature on the synthesis and adsorption properties were investigated, and the adsorption mechanism was also studied. The results showed that the amorphous MgAl2O4 formed at < 600 °C, and it crystallized at 700 °C. No impurity phase appeared in the samples calcined at 700–1300 °C, which was attributed to MgAl2O4 crystallized directly from Mg(Al(OiPr)4)2. The uniform-doped carbon in MgAl2O4/C composites came in-situ from the organic groups in Mg(Al(OiPr)4)2. MgAl2O4/C showed a superior adsorption capacity for Congo red (CR). The bimetallic alkoxides structure was favorable for high adsorption property, and the adsorption property of amorphous MgAl2O4/C was significantly superior to that of its crystalline counterpart. The adsorption kinetics data was fitted with the pseudo-second-order model, while the Langmuir isotherm model could well descript the adsorption isotherm behavior, and the maximum adsorption capacity for CR was 5690 mg/g. The high adsorption capacity was attributed to the Lewis acid-base reaction and the electrostatic interactions between the anionic dye CR and MgAl2O4/C surface as well as the in-situ carbon, and amorphous state. |
| first_indexed | 2024-04-10T19:05:02Z |
| format | Article |
| id | doaj.art-dc00f813bb8541ab9713b44ea20d98bd |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-10T19:05:02Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-dc00f813bb8541ab9713b44ea20d98bd2023-01-31T04:08:42ZengElsevierArabian Journal of Chemistry1878-53522023-03-01163104393Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materialsQian Wu0Feng Jiang1Guo Feng2Sanhai Wang3Lifeng Miao4Weihui Jiang5Jian Liang6Jianmin Liu7Department of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China; National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaDepartment of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaNational Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China; Advanced Ceramic Materials Research Institute, Jingdezhen Ceramic University, Jingdezhen 333000, China; Corresponding authors at: National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China.Department of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaNational Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaDepartment of Material Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333000, China; National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China; Corresponding authors at: National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, China.National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaNational Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic University, Jingdezhen 333000, ChinaMgAl2O4/C composite was prepared via a facile low-temperature non-hydrolytic sol-gel (NHSG) route, using Mg powder, Al wire and isopropanol as raw materials. The influence of types of magnesium source and heat treatment temperature on the synthesis and adsorption properties were investigated, and the adsorption mechanism was also studied. The results showed that the amorphous MgAl2O4 formed at < 600 °C, and it crystallized at 700 °C. No impurity phase appeared in the samples calcined at 700–1300 °C, which was attributed to MgAl2O4 crystallized directly from Mg(Al(OiPr)4)2. The uniform-doped carbon in MgAl2O4/C composites came in-situ from the organic groups in Mg(Al(OiPr)4)2. MgAl2O4/C showed a superior adsorption capacity for Congo red (CR). The bimetallic alkoxides structure was favorable for high adsorption property, and the adsorption property of amorphous MgAl2O4/C was significantly superior to that of its crystalline counterpart. The adsorption kinetics data was fitted with the pseudo-second-order model, while the Langmuir isotherm model could well descript the adsorption isotherm behavior, and the maximum adsorption capacity for CR was 5690 mg/g. The high adsorption capacity was attributed to the Lewis acid-base reaction and the electrostatic interactions between the anionic dye CR and MgAl2O4/C surface as well as the in-situ carbon, and amorphous state.http://www.sciencedirect.com/science/article/pii/S1878535222007092Nonhydrolytic sol-gelMgAl2O4Congo redRemovalAdsorptionAdsorption capacity |
| spellingShingle | Qian Wu Feng Jiang Guo Feng Sanhai Wang Lifeng Miao Weihui Jiang Jian Liang Jianmin Liu Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials Arabian Journal of Chemistry Nonhydrolytic sol-gel MgAl2O4 Congo red Removal Adsorption Adsorption capacity |
| title | Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials |
| title_full | Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials |
| title_fullStr | Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials |
| title_full_unstemmed | Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials |
| title_short | Nonhydrolytic sol-gel in-situ synthesis of high performance MgAl2O4/C adsorbent materials |
| title_sort | nonhydrolytic sol gel in situ synthesis of high performance mgal2o4 c adsorbent materials |
| topic | Nonhydrolytic sol-gel MgAl2O4 Congo red Removal Adsorption Adsorption capacity |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222007092 |
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