相关实验视频

Updated: Jul 27, 2025

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

从水溶液中有效地去除兽药,使用可从和铁金属有机框架中提取的磁性可分离的碳质材料

Andrea Salazar-García¹, Sagrario M Montemayor², Jorge Luis Guzmán-Mar¹

¹Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León (UANL), Ave. Universidad s/n, Cd Universitaria, 66455, San Nicolás de los Garza, N.L., C.P, Mexico.

Environmental science and pollution research international

|June 6, 2023

概括

磁性碳衍生的金属有机框架 (CDM) 有效地去除新出现的污染物,如硫法迪亚和flumequine. 这些材料由于其磁性特性和可再生性,为净化水提供了可持续的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学化学化学

背景情况:

新出现的污染物,包括黄 (SDZ) 和黄 (FLU) 等兽药,对水生生态系统构成风险.
金属有机框架 (MOF) 提供可调节的结构,但需要修改以有效地去除和分离污染物.
磁吸附剂使其易于从水溶液中分离,从而提高其实际适用性.

研究的目的:

使用微波辅助方法从和铁MOF (ZIF-67和MIL-100(Fe)) 中合成碳基磁材料.
研究这些碳衍生MOF (CDM) 的吸附性能,以从水中去除SDZ和FLU.
为了将吸附行为与合成的CDM的表面特性和元素组成相关联.

主要方法:

通过微波辅助方法快速合成CDM,然后进行N2大气碳化.
使用测定表面积,多孔性和元素组成 (拉曼光谱) 的技术,对CDM进行表征.
评估吸附动力学 (伪二次) 和同热量 (兰木尔模型) 用于SDZ和FLU的去除.

主要成果:

合成的C-ZIF-67和C-MIL-100 (Fe) 呈现出具有高表面积 (295.6和163.4 m2 g-1) 的层次性多孔结构.
由于存在和铁物种,CDM显示了磁性特性,使其易于分离.
观察到SDZ和FLU的有效去除,遵循伪二阶动力学并适应兰格穆尔模型,表明热力学上有利的吸附过程.

结论:

碳衍生MOF (C-ZIF-67和C-MIL-100) 是对新出现的污染物有效的磁吸附剂.
这些材料的多孔结构,磁性可分离性和可再生性使它们成为水处理应用的前景.
该研究成功地将吸附性能与CDM的表面特性和元素组成联系起来.

关键词:

吸附机制是一种吸附机制.和铁金属有机框架.由MOF衍生的多孔碳素.磁分离器的磁性分离方式兽医药物清除兽医药物清除

更多相关视频

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Solvothermal Synthesis of MIL-96 and UiO-66-NH2 on Atomic Layer Deposited Metal Oxide Coatings on Fiber Mats

Published on: June 13, 2018

相关概念视频

Capillary Electrophoresis: Applications

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...

Extraction: Advanced Methods

Extraction: Advanced Methods

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...

Enhanced Elimination of Poison

Enhanced Elimination of Poison

Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Voltammetry: Stripping Methods

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

Coagulation

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...