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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...

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Related Experiment Video

Updated: Feb 16, 2026

Fabrication of Spatially Confined Complex Oxides

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

Multiscale Phase Separations for Hierarchically Ordered Macro/Mesostructured Metal Oxides.

Changshin Jo¹, Jongkook Hwang¹, Won-Gwang Lim¹

¹Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, Gyeongbuk, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)

|December 23, 2017

Summary

This summary is machine-generated.

A simple method creates hierarchically porous metal oxides with controlled macrostructures using solvent evaporation. This approach enables mass production of versatile mesoporous materials for applications like lithium-ion batteries.

Keywords:

hierarchically porous structure lithium-ion battery metal oxide self-assembly spinodal decomposition

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Last Updated: Feb 16, 2026

Fabrication of Spatially Confined Complex Oxides

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

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

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Published on: August 16, 2018

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

Area of Science:

Materials Science
Nanotechnology
Inorganic Chemistry

Background:

Porous architectures are crucial for inorganic materials applications.
Existing methods for controlled macrostructure mesoporous materials are complex and hinder mass production.

Purpose of the Study:

To develop a simple, template-free method for controlling the macrostructures of mesoporous materials.
To create hierarchically porous metal oxides with tunable macro/mesostructures.

Main Methods:

Controlled solvent evaporation inducing simultaneous macrophase and mesophase separation.
Utilizing spinodal decomposition and block copolymer self-assembly.
Characterization using nanocomputed tomography, focused ion beam milling, and electron microscopy.

Main Results:

Formation of hierarchically porous metal oxides with periodic macro/mesostructures.
Control over macrostructure morphology, yielding spheres and powders with isolated macropores.
Demonstrated use of hierarchically macro/mesoporous metal oxide as an anode material in lithium-ion batteries.

Conclusions:

The developed solvent evaporation method offers a simple and versatile platform for manufacturing mesoporous inorganic materials with controlled macrostructures.
This approach facilitates mass production and broad accessibility for diverse applications.