Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism.
To remove phosphate from water, a novel Fe-doped ZIF-8 was synthesized as a superior adsorbent. The Fe-doped ZIF-8 was fully characterized using different characterization techniques and it was found that the as-prepared Fe-doped ZIF-8 (denoted as ZIF-(2Zn:1Fe)) showed a polyhedral morphology with a...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2024-01-01
|
| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0311239 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850134557546774528 |
|---|---|
| author | Zhijia Miao Xueqiang Song Xiaolei Wang Hao Wang Shuoyang Li Zhen Jiao |
| author_facet | Zhijia Miao Xueqiang Song Xiaolei Wang Hao Wang Shuoyang Li Zhen Jiao |
| author_sort | Zhijia Miao |
| collection | DOAJ |
| description | To remove phosphate from water, a novel Fe-doped ZIF-8 was synthesized as a superior adsorbent. The Fe-doped ZIF-8 was fully characterized using different characterization techniques and it was found that the as-prepared Fe-doped ZIF-8 (denoted as ZIF-(2Zn:1Fe)) showed a polyhedral morphology with a large specific surface area of 157.64 m2/g and an average pore size of 3.055 nm. Analyses using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction showed that Fe atoms were successfully incorporated into the ZIF-8 skeleton. Batch experiments demonstrated that the molar ratio of Fe and Zn has effects on phosphate adsorption. The adsorption kinetics conformed to a pseudo-second-order model with a high correlation coefficient (R2 = 0.9983). The adsorption isotherm matched the Langmuir model (R2 = 0.9994) better than the Freundlich model (R2 = 0.7501), suggesting that the adsorption of phosphoric acid by ZIF-(2Zn:1Fe) can be classified as a chemisorption on a homogeneous surface. The adsorption amount was 38.60 mg/g. It was found that acidic environments favored the adsorption reaction and the best adsorption was achieved at an initial pH of 2. Inhibition of adsorption by common anions is NO3-> CO32-> SO42-> Cl-. Characterization results indicate that the main mechanism of adsorption is surface complexation interactions. |
| format | Article |
| id | doaj-art-2ccdbf97a5be40d4be61bb70bfb93b4c |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-2ccdbf97a5be40d4be61bb70bfb93b4c2025-08-20T02:31:41ZengPublic Library of Science (PLoS)PLoS ONE1932-62032024-01-011910e031123910.1371/journal.pone.0311239Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism.Zhijia MiaoXueqiang SongXiaolei WangHao WangShuoyang LiZhen JiaoTo remove phosphate from water, a novel Fe-doped ZIF-8 was synthesized as a superior adsorbent. The Fe-doped ZIF-8 was fully characterized using different characterization techniques and it was found that the as-prepared Fe-doped ZIF-8 (denoted as ZIF-(2Zn:1Fe)) showed a polyhedral morphology with a large specific surface area of 157.64 m2/g and an average pore size of 3.055 nm. Analyses using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction showed that Fe atoms were successfully incorporated into the ZIF-8 skeleton. Batch experiments demonstrated that the molar ratio of Fe and Zn has effects on phosphate adsorption. The adsorption kinetics conformed to a pseudo-second-order model with a high correlation coefficient (R2 = 0.9983). The adsorption isotherm matched the Langmuir model (R2 = 0.9994) better than the Freundlich model (R2 = 0.7501), suggesting that the adsorption of phosphoric acid by ZIF-(2Zn:1Fe) can be classified as a chemisorption on a homogeneous surface. The adsorption amount was 38.60 mg/g. It was found that acidic environments favored the adsorption reaction and the best adsorption was achieved at an initial pH of 2. Inhibition of adsorption by common anions is NO3-> CO32-> SO42-> Cl-. Characterization results indicate that the main mechanism of adsorption is surface complexation interactions.https://doi.org/10.1371/journal.pone.0311239 |
| spellingShingle | Zhijia Miao Xueqiang Song Xiaolei Wang Hao Wang Shuoyang Li Zhen Jiao Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. PLoS ONE |
| title | Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. |
| title_full | Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. |
| title_fullStr | Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. |
| title_full_unstemmed | Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. |
| title_short | Facile synthesis of Fe-doped ZIF-8 and its adsorption of phosphate from water: Performance and mechanism. |
| title_sort | facile synthesis of fe doped zif 8 and its adsorption of phosphate from water performance and mechanism |
| url | https://doi.org/10.1371/journal.pone.0311239 |
| work_keys_str_mv | AT zhijiamiao facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism AT xueqiangsong facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism AT xiaoleiwang facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism AT haowang facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism AT shuoyangli facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism AT zhenjiao facilesynthesisoffedopedzif8anditsadsorptionofphosphatefromwaterperformanceandmechanism |