Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties
In the present work, the hollow MgO spheres were synthesized through a facile wet-chemistry method. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrum are employed to characterize the as-prepared sample. Those results indicate that the a...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2021/6655593 |
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| author | Yong Zhang Zhen Jin Liao Min-He Xu Guang-Song Xu Min-Da Hui Cheng Jian Huang |
| author_facet | Yong Zhang Zhen Jin Liao Min-He Xu Guang-Song Xu Min-Da Hui Cheng Jian Huang |
| author_sort | Yong Zhang |
| collection | DOAJ |
| description | In the present work, the hollow MgO spheres were synthesized through a facile wet-chemistry method. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrum are employed to characterize the as-prepared sample. Those results indicate that the average size of the as-prepared MgO hollow spheres is about 2 μm. Also, the MgO hollow spheres have the polycrystalline and porous structure, which would provide large specific surface area and plenty active sites for fluoride adsorption. The adsorption properties of the MgO hollow spheres towards fluoride are investigated. The fluoride adsorption kinetics of the MgO hollow spheres fits well the pseudo-second-order model. Also, the kinetic data revealed that the fluoride adsorption was rapid, more than 83% of fluoride could be removed within 40 min. The fluoride adsorption capacity of the hollow MgO spheres is larger than 182.4 mg/g at a pH of 7.0. The as-prepared products maintain excellent adsorption performance in the pH range of 3–11. In addition, the adsorption mechanism also has been discussed. From the FTIR results, a hydroxyl and carbonate coexchange mechanism is proposed. It is believed that the hollow MgO spheres are a potential candidate for fluoride removal. |
| format | Article |
| id | doaj-art-9d05afed3471426e97bfae133aeb3553 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-9d05afed3471426e97bfae133aeb35532025-02-03T06:12:52ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242021-01-01202110.1155/2021/66555936655593Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption PropertiesYong Zhang0Zhen Jin1Liao Min-He2Xu Guang-Song3Xu Min-Da4Hui Cheng5Jian Huang6School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, ChinaSchool of Materials and Chemical Engineering, Anhui JianZhu University, Hefei 230601, Anhui, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, ChinaSchool of Materials and Chemical Engineering, Anhui JianZhu University, Hefei 230601, Anhui, ChinaKey Laboratory of Xin’an Medicine, Ministry of Education, Anhui Province Key Laboratory of R&D of Chinese Medicine, Anhui University of Chinese Medicine, Hefei 230038, Anhui, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, ChinaIn the present work, the hollow MgO spheres were synthesized through a facile wet-chemistry method. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectrum are employed to characterize the as-prepared sample. Those results indicate that the average size of the as-prepared MgO hollow spheres is about 2 μm. Also, the MgO hollow spheres have the polycrystalline and porous structure, which would provide large specific surface area and plenty active sites for fluoride adsorption. The adsorption properties of the MgO hollow spheres towards fluoride are investigated. The fluoride adsorption kinetics of the MgO hollow spheres fits well the pseudo-second-order model. Also, the kinetic data revealed that the fluoride adsorption was rapid, more than 83% of fluoride could be removed within 40 min. The fluoride adsorption capacity of the hollow MgO spheres is larger than 182.4 mg/g at a pH of 7.0. The as-prepared products maintain excellent adsorption performance in the pH range of 3–11. In addition, the adsorption mechanism also has been discussed. From the FTIR results, a hydroxyl and carbonate coexchange mechanism is proposed. It is believed that the hollow MgO spheres are a potential candidate for fluoride removal.http://dx.doi.org/10.1155/2021/6655593 |
| spellingShingle | Yong Zhang Zhen Jin Liao Min-He Xu Guang-Song Xu Min-Da Hui Cheng Jian Huang Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties Advances in Condensed Matter Physics |
| title | Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties |
| title_full | Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties |
| title_fullStr | Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties |
| title_full_unstemmed | Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties |
| title_short | Facile Synthesis of Hollow MgO Spheres and Their Fluoride Adsorption Properties |
| title_sort | facile synthesis of hollow mgo spheres and their fluoride adsorption properties |
| url | http://dx.doi.org/10.1155/2021/6655593 |
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