相关实验视频

Updated: Jun 13, 2025

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

合成ZIF-8/花素复合物,用于从水中去除Cu2+

Ni Liao¹, Furong Li¹, Xiuli Huang¹

¹College of Biological and Chemical Engineering, Panzhihua University, Panzhihua, People's Republic of China.

Environmental technology

|September 11, 2024

概括

酸盐 (Cs) 化化化化化 (ZIF-8@Cs) 框架有效地从矿山废水中去除Cu2+由于增加了表面积和抑制了聚合. 这种新型吸附剂显示出高效率和有毒元素去除潜力.

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:

矿山废水通常含有有毒的重金属,如Cu2+.
酸伊米达框架 (ZIF-8) 是一种潜在的吸附剂,但可能会受到聚合的影响.
酸盐 (Cs) 兴奋剂可以修改材料特性以提高性能.

研究的目的:

为了合成和表征一种新型的酸盐 (Cs) 合的化石 (ZIF-8@Cs) 吸附剂.
评估ZIF-8@Cs在从矿山废水中去除Cu2+的效率.
研究ZIF-8@Cs. 的吸附机制和热力学特性.

主要方法:

ZIF-8@Cs.的面部溶热合成
吸附实验不同接触时间,初始Cu2+度,吸附剂剂量和pH.
使用伪第一阶分析,兰迈尔等热量和热力学模型进行分析.

主要成果:

与ZIF-8@Cs相比,ZIF-8@Cs的表面积更大,孔径更小.
在最佳条件下 (30 mg/L,4h,pH 6.0) 达到 85% 的Cu2+的去除效率.
吸附遵循伪第一阶动力学和兰木尔异热模型,表明自发,外热和有序单层吸附.

结论:

ZIF-8@Cs是一种高效的吸附剂,用于从矿山废水中去除Cu2+.
基托桑兴奋剂有效抑制ZIF-8聚合,提高吸附性能.
ZIF-8@Cs在废水处理中显示出实际应用的巨大潜力.

关键词:

有毒金属有毒金属这里是ZIF-8的位置.吸附机制是一种吸附机制.聚合方式聚合方式聚合方式

更多相关视频

Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium

Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium

Published on: July 8, 2015

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

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...

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...

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...

Ion Exchange

Ion Exchange

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...