Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption
In the present work, the porous MgO nanosheet-modified activated carbon fiber felt (MgO@ACFF) was prepared for fluoride removal. The MgO@ACFF was characterized by XRD, SEM, TEM, EDS, TG, and BET. The fluoride adsorption performance of MgO@ACFF also has been investigated. The adsorption rate of the M...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-03-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/13/6/1082 |
| _version_ | 1827748248692981760 |
|---|---|
| author | De-Cai Wang Min-Da Xu Zhen Jin Yi-Fan Xiao Yang Chao Jie Li Shao-Hua Chen Yi Ding |
| author_facet | De-Cai Wang Min-Da Xu Zhen Jin Yi-Fan Xiao Yang Chao Jie Li Shao-Hua Chen Yi Ding |
| author_sort | De-Cai Wang |
| collection | DOAJ |
| description | In the present work, the porous MgO nanosheet-modified activated carbon fiber felt (MgO@ACFF) was prepared for fluoride removal. The MgO@ACFF was characterized by XRD, SEM, TEM, EDS, TG, and BET. The fluoride adsorption performance of MgO@ACFF also has been investigated. The adsorption rate of the MgO@ACFF toward fluoride is fast; more than 90% of the fluoride ions can be adsorbed within 100 min, and the adsorption kinetics of MgO@ACFF can be fitted in a pseudo-second-order model. The adsorption isotherm of MgO@ACFF fitted well in the Freundlich model. Additionally, the fluoride adsorption capacity of MgO@ACFF is larger than 212.2 mg/g at neutral. In a wide pH range of 2–10, the MgO@ACFF can efficiently remove fluoride from water, which is meaningful for practical usage. The effect of co-existing anions on the fluoride removal efficiency of the MgO@ACFF also has been studied. Furthermore, the fluoride adsorption mechanism of the MgO@ACFF was studied by the FTIR and XPS, and the results reveal a hydroxyl and carbonate co-exchange mechanism. The column test of the MgO@ACFF also has been investigated; 505-bed volumes of 5 mg/L fluoride solution can be treated with effluent under 1.0 mg/L. It is believed that the MgO@ACFF is a potential candidate for a fluoride adsorbent. |
| first_indexed | 2024-03-11T06:05:29Z |
| format | Article |
| id | doaj.art-c245a54309c0492f873623a30498dbdb |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T06:05:29Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c245a54309c0492f873623a30498dbdb2023-11-17T13:01:18ZengMDPI AGNanomaterials2079-49912023-03-01136108210.3390/nano13061082Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride AdsorptionDe-Cai Wang0Min-Da Xu1Zhen Jin2Yi-Fan Xiao3Yang Chao4Jie Li5Shao-Hua Chen6Yi Ding7Anhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaSchool of Materials and Chemical Engineering, Anhui Jian Zhu University, Hefei 230601, ChinaAnhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaSchool of Environment and Energy Engineering, Anhui Jian Zhu University, Hefei 230601, ChinaAnhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaAnhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaAnhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaAnhui Advanced Building Materials Engineering Laboratory, Anhui Jian Zhu University, Hefei 230601, ChinaIn the present work, the porous MgO nanosheet-modified activated carbon fiber felt (MgO@ACFF) was prepared for fluoride removal. The MgO@ACFF was characterized by XRD, SEM, TEM, EDS, TG, and BET. The fluoride adsorption performance of MgO@ACFF also has been investigated. The adsorption rate of the MgO@ACFF toward fluoride is fast; more than 90% of the fluoride ions can be adsorbed within 100 min, and the adsorption kinetics of MgO@ACFF can be fitted in a pseudo-second-order model. The adsorption isotherm of MgO@ACFF fitted well in the Freundlich model. Additionally, the fluoride adsorption capacity of MgO@ACFF is larger than 212.2 mg/g at neutral. In a wide pH range of 2–10, the MgO@ACFF can efficiently remove fluoride from water, which is meaningful for practical usage. The effect of co-existing anions on the fluoride removal efficiency of the MgO@ACFF also has been studied. Furthermore, the fluoride adsorption mechanism of the MgO@ACFF was studied by the FTIR and XPS, and the results reveal a hydroxyl and carbonate co-exchange mechanism. The column test of the MgO@ACFF also has been investigated; 505-bed volumes of 5 mg/L fluoride solution can be treated with effluent under 1.0 mg/L. It is believed that the MgO@ACFF is a potential candidate for a fluoride adsorbent.https://www.mdpi.com/2079-4991/13/6/1082porous MgO nanosheetsactivated carbon fiber feltmodificationfluorideadsorption |
| spellingShingle | De-Cai Wang Min-Da Xu Zhen Jin Yi-Fan Xiao Yang Chao Jie Li Shao-Hua Chen Yi Ding Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption Nanomaterials porous MgO nanosheets activated carbon fiber felt modification fluoride adsorption |
| title | Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption |
| title_full | Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption |
| title_fullStr | Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption |
| title_full_unstemmed | Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption |
| title_short | Synthesis and Characterization of Porous MgO Nanosheet-Modified Activated Carbon Fiber Felt for Fluoride Adsorption |
| title_sort | synthesis and characterization of porous mgo nanosheet modified activated carbon fiber felt for fluoride adsorption |
| topic | porous MgO nanosheets activated carbon fiber felt modification fluoride adsorption |
| url | https://www.mdpi.com/2079-4991/13/6/1082 |
| work_keys_str_mv | AT decaiwang synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT mindaxu synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT zhenjin synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT yifanxiao synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT yangchao synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT jieli synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT shaohuachen synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption AT yiding synthesisandcharacterizationofporousmgonanosheetmodifiedactivatedcarbonfiberfeltforfluorideadsorption |