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Updated: May 25, 2026
08:13
Preparation of Biopolymer Aerogels Using Green Solvents
Published on: July 4, 2016
Hierarchically Porous Multivariate COF Aerogel With Enhanced Diffusibility and Tailored Functionality for Highly
Dipanjan Majumder1, Nayan Sarkar1, Arun Torris2
1Department of Chemistry, Indian Institute of Science Education and Research, Pune, India.
Angewandte Chemie (International Ed. in English)
|May 23, 2026
Summary
Multivariate covalent organic framework (COF) aerogels efficiently capture toxic bromine vapor and solutions. These advanced materials offer a promising solution for environmental remediation and public health protection.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Elemental bromine is toxic, corrosive, and volatile, posing significant environmental and health risks.
- Crystalline covalent organic frameworks (COFs) have potential but suffer from aggregation and poor processability in powdered form.
Purpose of the Study:
- To develop highly efficient and processable materials for bromine sequestration.
- To overcome the limitations of traditional COFs by transforming them into aerogels.
Main Methods:
- Fabrication of multivariate covalent organic framework aerogels with high surface area and hierarchical porosity.
- Testing the aerogels for bromine sequestration in both vapor and aqueous phases.
- Evaluating adsorption capacity, kinetics, selectivity, and performance under dynamic conditions.
Main Results:
- The synthesized multivariate COF aerogels demonstrated high bromine uptake capacity and ultrafast adsorption kinetics.
- The aerogels exhibited excellent selectivity for bromine and robust performance in dynamic flow-through tests.
- Bromine concentration in aqueous solutions was reduced below the WHO permissible limit of 10 ppm.
Conclusions:
- Multivariate COF aerogels are effective for capturing bromine from vapor and solution phases.
- This strategy provides a versatile pathway for designing task-specific materials for environmental remediation.
- Rational building-block modulation is key for developing targeted separation systems.
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