相关实验视频

Updated: Jun 29, 2025

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Published on: June 2, 2022

可回收Fe₃O₄@UiO-66-PDA核心外纳米材料用于广泛的金属离子吸附:批量实验和理论分析

Shuangqin Tian¹, Xin Shi², Shujie Wang¹

¹School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.

Journal of colloid and interface science

|March 27, 2024

概括

一种新的磁芯外吸附剂Fe3O4@UiO-66-PDA有效地从废水中去除重金属. 这种多多巴胺修饰的金属有机框架显示出高容量和可回收性,为净化水提供了有希望的解决方案.

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:

重金属污染对环境和健康构成重大风险.
开发高效和可回收的吸附剂对于废水处理至关重要.
磁性核心外结构为吸附剂设计和回收提供了独特的优势.

研究的目的:

为了合成和表征一种新的磁核外吸附剂,Fe3O4@UiO-66-PDA.
为了评估Fe3O4@UiO-66-PDA对各种重金属离子的吸附性能.
研究开发的吸附剂的吸附机制和可回收性.

主要方法:

溶解热合成Fe3O4@UiO-66-PDA核心外吸收剂. 在溶解热中合成.
对Fe3+,Mn2+,Pb2+,Cu2+,Hg2+和Cd2+去除进行批量吸附实验.
在不同pH值下进行吸附研究,并研究吸附动力学和异温物.
密度功能理论 (DFT) 分析以阐明机制.
循环吸附-脱附试验用于可回收性评估.

主要成果:

Fe3O4@UiO-66-PDA具有很高的吸附能力:Fe3+的97.99 mg/g,Pb2+的121.42 mg/g和Hg2+的130.72 mg/g,在pH值为5.0.0的情况下.
吸附剂表现出极好的可回收性,在六个循环后保持超过80%的效率.
DFT分析显示了强烈的电子相互作用和协调效应,有助于Hg2+吸附,能量为-2.61 eV.

结论:

Fe3O4@UiO-66-PDA 核心外吸附剂对于从废水中去除重金属离子非常有效.
它的磁性特性使其易于分离和回收,提高其实际应用性.
这项研究强调了磁性MOF复合材料在先进水处理解决方案中的潜力.

关键词:

吸附方式吸附方式吸附方式在 DFT 方面,它是最重要的.重金属离子是重金属离子.磁性UiO-66是一种磁性在 PDA 和 PDA 之间.

更多相关视频

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

Published on: November 15, 2016

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

相关概念视频

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...