Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

1.1K
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...
1.1K
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

1.2K
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,...
1.2K
Ion Exchange01:17

Ion Exchange

1.1K
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...
1.1K
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

1.8K
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
1.8K
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

1.6K
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
1.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Growth-Coupled Assembly of Hydrogen-Bonded Organic Framework Membranes on Cell Surfaces.

Journal of the American Chemical Society·2026
Same author

Associated Factors for Cesarean Section in Pregnant Women with Gestational Diabetes Mellitus.

International journal of women's health·2026
Same author

Combined Effect of <i>Bifidobacterium longum</i> Postbiotics and Dietary Herbs on Ameliorating Metabolic Disturbances in Hyperlipidemic Mice.

Foods (Basel, Switzerland)·2026
Same author

Anode-pressurized water electrolysis with modulated anion exchange membrane architecture.

Nature communications·2026
Same author

Water-Induced Dynamic Structural Adaptivity of Zr-MOF for Holistic Metrics Optimization in Atmospheric Water Harvesting.

Journal of the American Chemical Society·2026
Same author

From economic crop to high-value product: Fermentation of chestnut protein by Lactobacillus rhamnosus ameliorates chronic inflammation via the gut microbiota-SCFAs axis.

International journal of food microbiology·2026

相关实验视频

Updated: Jan 14, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

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

Published on: August 16, 2018

10.4K

具有选择性静电分离功能的金属有机框架

Haiwei Liu1, Jie Li1, Shuang Zhao1

  • 1Ministry of Education Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Frontiers Science Center for High Energy Materials, School of Chemistry and Chemical Engineering, Advanced Technology Research Institute (Jinan), Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology; Beijing 100081, P. R. China.

Journal of the American Chemical Society
|October 25, 2025
PubMed
概括

缺陷工程的热立体胺酸框架提高了电位性能,以实现高效的静电分离. 这种策略提高了电荷密度和保留率,使生物分离和材料回收的先进应用成为可能.

更多相关视频

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
10:27

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Published on: July 14, 2015

10.5K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.6K

相关实验视频

Last Updated: Jan 14, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

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

Published on: August 16, 2018

10.4K
Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
10:27

Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides

Published on: July 14, 2015

10.5K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.6K

科学领域:

  • 材料科学
  • 电化学
  • 分离科学

背景情况:

  • 静电分离对于生物分离,能量转化和水处理至关重要.
  • 实现高电荷密度和稳定的电荷保留在静电分离中的电极仍然是一个挑战.
  • 由于其有序的结构和功能组,石化模酸框架 (ZIF) 具有潜力.

研究的目的:

  • 通过将缺陷工程 ZIF 纳入聚合物矩阵来开发高性能电极.
  • 研究ZIF结构缺陷对电荷密度,电荷保留和静电分离效率的影响.
  • 展示这些电极在生物分子的选择性吸附中的实际应用.

主要方法:

  • 在聚合物矩阵中将缺陷工程的石化模酸框架 (ZIF) 纳入.
  • 使用静电极化在复合电材料中注入和捕获电荷.
  • 电位特性,包括表面电位保留和电荷散射.
  • 在血清基质中评估低密度脂蛋白 (LDL) 的吸附能力和选择性.

主要成果:

  • 有缺陷的ZIF-8的复合电膜显示出增强的电荷密度和显著改善的电荷保留,在14天后保留了其97.4%的表面电位.
  • 这种材料的高吸附能力为487.6mg/g的电阳性低密度脂蛋白 (LDL).
  • 在血清中,LDL/ 高密度脂蛋白 (HDL) 的选择性比为63. 5,超过现有的材料.
  • 开发的电子材料显示出出色的生物安全性.

结论:

  • 将结构缺陷引入ZIF并通过静电极化将其纳入聚合物矩阵是创建高性能电极的有效策略.
  • 这种由缺陷引起的增强显著提高了电荷密度和保留,从而提高了静电分离能力.
  • 开发的材料对先进的静电吸附剂应用具有很大的前景,包括选择性生物分子分离和潜在的DNA净化和提取.