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Generation and Recovery of β-cell Spheroids From Step-growth PEG-peptide Hydrogels
Published on: December 6, 2012
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Clickable polymer scaffolds enable Ce recovery with peptide ligands.
Jacob D Hostert1, Maura R Sepesy1, Christine E Duval1
1Chemical and Biomolecular Engineering, Case Western Reserve University, 2102 Adelbert Rd, Cleveland, Ohio, USA. christine.duval@case.edu.
Soft Matter
|March 31, 2023
Summary
Researchers developed functionalized polymer scaffolds to recover rare earth elements (REEs) from waste. The novel peptide-functionalized scaffolds demonstrated effective binding of cerium, showcasing a sustainable recycling approach.
Area of Science:
- Materials Science
- Chemical Engineering
- Environmental Science
Background:
- Rare earth elements (REEs) are critical for renewable energy technologies.
- Sustainable methods for REE recovery from waste are urgently needed.
- Functionalized polymer scaffolds offer tunable properties for ion recovery.
Purpose of the Study:
- To synthesize and characterize REE-adsorbing polymer scaffolds.
- To functionalize polymer surfaces with REE-binding peptides for selective ion capture.
- To demonstrate the efficacy of peptide-functionalized scaffolds for REE recovery.
Main Methods:
- Poly(glycidyl methacrylate) (GMA) brushes were grafted onto PVDF using AGET ATRP.
- Azide moieties were introduced via GMA ring-opening.
- REE-binding peptides were conjugated using CuAAC click chemistry.
- Fourier transform infrared spectroscopy confirmed functional group presence.
Main Results:
- Peptide-functionalized scaffolds selectively bound cerium (a REE).
- Scaffolds with control peptides showed significantly lower cerium binding.
- The study confirmed the retained functionality of REE-binding peptides on polymer surfaces.
Conclusions:
- A novel strategy for creating REE-binding polymer scaffolds was established.
- Peptide conjugation via click chemistry enables tailored surface specificity.
- This approach is applicable for recovering various ions and molecules from waste streams.
