相关实验视频

Updated: Jun 30, 2025

Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay

Anticancer Metal Complexes: Synthesis and Cytotoxicity Evaluation by the MTT Assay

Published on: November 10, 2013

一个分子提取的过程,基于双重选择性复合和沉

Oluwatomiwa A Osin¹, Shuo Lin¹, Benjamin S Gelfand¹

¹Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada.

Nature communications

|March 24, 2024

概括

这项研究引入了一种新的复杂化-沉方法,使用纳夫他二氧化物从复杂混合物中选择性地回收五价瓦纳 (V(V)). 该方法表现出高效率和选择性,为回收提供一种非有毒且潜在可扩展的解决方案.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
无机化学无机化学有机化学

背景情况:

越来越多的需求,加上减少的自然资源和采矿带来的环境问题,需要有效的回收策略.
现有的回收方法经常面临选择性和环境影响的挑战.

研究的目的:

开发一种选择性和有效的方法,从复杂金属混合物中回收五价范离子 (V(V)).
为了利用一种新型的酸稳金属结合剂,纳夫他二氧化物 (H2CIDIII),用于复合和随后的沉.

主要方法:

采用复合-沉技术,使用纳夫他二氧化物 (H2CIDIII) 结合V (V) 离子.
研究了形成的V (V) 复合物的晶体结构 (1:1和1:2M:L比率).
利用pH控制的沉来轻松分离离离子复合物.

主要成果:

纳夫塔胺二氧化物 (H2CIDIII) 显示出高提取能力和对V的快速结合.
该方法在合成和真油油砂尾矿中实现了V (V) 的高回收选择性,选择性系数> 3 × 10^5.
斑马鱼毒性测定证实了回收的复合物的非毒性.

结论:

使用H2CIDIII的双重复合-沉技术对选择性V(V) 恢复非常有效.
该方法提供了一种有希望的,无毒的,并且潜在的可扩展的方法,用于从各种来源回收.
这种方法避免了需要坚实的支,简化了恢复过程.

更多相关视频

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 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...

Masking and Demasking Agents

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...

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...

Precipitation Gravimetry

Precipitation Gravimetry

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...

EDTA: Auxiliary Complexing Reagents

EDTA: Auxiliary Complexing Reagents

EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...