离子液体功能化金属有机框架在衍生物吸附过程中的性能
Lavinia Lupa1,2, Nick Samuel Tolea2,3, Marcela Iosivoni2
1Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara 6 Vasile Parvan Blv 300223 Timisoara Romania.
RSC advances
|February 6, 2024
概括
这项研究开发了用离子液体 (IL) 修改的新型金属有机框架 (MOF),以有效地去除有毒有机污染物. 基 (Ce) MOFs与ILs证明了废水中的衍生物的优越吸附能力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 工业活动将有毒有机污染物 (OP) 释放到废水中.
- 衍生物是常见的和有害的OP,需要有效的去除策略.
- 传统的处理方法往往面临效率和环境影响的局限性.
研究的目的:
- 用离子液体 (IL) 作为复合吸附剂 (IL@MOF) 修饰的金属有机框架 (MOF) 的合成和特征.
- 研究IL@MOF材料的吸附性能,以从水溶液中去除衍生物.
- 评估MOF结构和IL修饰对吸附能力和效率的影响.
主要方法:
- 使用1-乙烯-1,1-二酸 (HEDP) 和各种金属盐 (Co,Ni,Cu,Ce) 通过热水方法合成MOF.
- 用选定的基于伊米达的离子液体 (IL) 浸MOF,以形成IL@MOF复合材料.
- 使用SEM,EDX和TG分析进行材料的表征.
- 吸附平衡实验用于研究初始OP度和吸附剂类型的影响.
- 应用等温模型 (兰慕尔,弗洛因德利希,雷德利希-彼得森,杜比宁-拉杜什基维奇) 来确定吸附参数.
主要成果:
- 合成的IL@MOF复合材料保留了MOF的结构特征,具有增强的吸附能力.
- 与未经修改的MOF相比,IL修改显著增加了衍生物的吸附能力.
- 吸附能力遵循 CeHEDP > CoHEDP > NiHEDP > CuHEDP 的趋势,基于 CeHEDP 的 IL@MOF 显示出最佳性能.
- 同热模拟提供了关键参数,表明模型适合描述吸附过程.
结论:
- IL@MOF复合材料是有效的吸附剂,可以从工业废水中去除衍生物.
- 选择金属和纳入ILs对于优化吸附性能至关重要.
- 用离子液体修改的基MOF为环境修复提供了一个有希望的绿色化学方法.
更多相关视频
相关概念视频
00:56Extraction: Advanced Methods
447
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
447
01:17Ion Exchange
592
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
592
02:51Metal-Ligand Bonds
20.8K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.8K
02:32Physical Properties of Alcohols and Phenols
14.4K
Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of...
Alcohols possess a higher boiling point than aliphatic hydrocarbons of...
14.4K