锆镧双金属MOF对水体中磷酸盐和氟离子同步吸附的机理研究
陈彩玉 , 郭波 , 王瑞麟 , 朱庆宇 , 程远洋 , 熊武
现代化工 ›› 2025, Vol. 45 ›› Issue (10) : 193 -199.
锆镧双金属MOF对水体中磷酸盐和氟离子同步吸附的机理研究
Study on simultaneous adsorption mechanism of zirconium-lanthanum bimetallic MOF on phosphate and fluorine ions in water
Zirconium-lanthanum bimetallic MOF (Zr/La-MOF) is prepared via a rapid convenient electrodeposition method,and used for the individual or synchronous adsorption of phosphate and fluorine ions in water.The results show that the removal rates of phosphate and fluorine ions are 97.58% and 90.91%,respectively during individual adsorption process with a Zr/La-MOF dosage of 1 g/L and a reaction time of 60 min.In the synchronous adsorption process,the removal rates of phosphate and fluorine ions both exceed 95% when the dosage of Zr/La-MOF is 2 g/L,and the reaction lasts for 60 min.Zr/La-MOF adsorbent is characterized by means of SEM,BET,XRD,FT-IR,etc.It is indicated that Zr/La-MOF has a multi-level mesoporous structure,with a specific surface area of 174.79 m2/g,and its main adsorption mechanism is ligand exchange between phosphate or fluorine ions and Zr/La-OH.The adsorption of phosphate and fluorine ions by Zr/La-MOF conforms to Langmuir isotherm model,and the maximum adsorption capacities calculated are 444.1 mg P/g and 78.7 mg F/g,respectively.The pseudo second order kinetic model can better describe the adsorption behavior of phosphate and fluorine ions by Zr/La-MOF,indicating that this process is mainly dominated by chemical adsorption.
双金属MOF吸附剂 / 氟离子 / 磷酸盐 / 吸附 / 电化学沉积
bimetallic MOF adsorbent / fluorine ion / phosphate / adsorption / electrochemical deposition
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
FanY, |
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
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山西省基础研究计划(202403021211220)
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