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Colloidal precipitates

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

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Updated: May 1, 2026

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

Published on: April 10, 2019

Pickering-emulsion inversion strategy for separating and recycling nanoparticle catalysts.

Yuhong Yu¹, Luman Fu, Fengwei Zhang

¹School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan 030006 (China); Yabao Pharmaceutical Group Co. Ltd., Yuncheng 044602 (China).

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry

|April 3, 2014

Summary

Pickering-emulsion inversion offers a novel method for in situ separation and recycling of nanoparticle catalysts. This sustainable approach addresses limitations of traditional methods, paving the way for greener chemistry applications.

Keywords:

Pickering emulsion emulsion inversion nanoparticle catalyst recycling separation

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Published on: January 7, 2019

Area of Science:

Nanoscience and Nanotechnology
Catalysis
Green Chemistry

Background:

Nanoparticle catalysts offer high surface area and accessibility of active sites, driving innovation in chemical transformations.
Industrial application of nanoparticle catalysts is hindered by inefficient separation and recycling methods like filtration and centrifugation.
There is a growing demand for sustainable and green chemistry approaches in catalysis.

Purpose of the Study:

To introduce Pickering-emulsion inversion as a novel strategy for in situ separation and recycling of nanoparticle catalysts.
To highlight the potential of this method for establishing sustainable catalytic processes.
To bridge current research with future investigations in nanoparticle catalyst recovery.

Main Methods:

Utilizing Pickering-emulsion inversion for catalyst separation.
Demonstrating in situ separation and recycling capabilities.
Evaluating the strategy's effectiveness for sustainable catalysis.

Main Results:

Pickering-emulsion inversion successfully enables in situ separation and recycling of nanoparticle catalysts.
This method presents a viable alternative to conventional separation techniques.
The strategy aligns with the principles of green and sustainable chemistry.

Conclusions:

Pickering-emulsion inversion is a promising and conceptually new strategy for nanoparticle catalyst recovery.
This approach has the potential to become a widely adopted method in green catalysis.
Further research is encouraged to explore and optimize this innovative technique.