What is it about?
Some industrial dyes persist in wastewater and can irritate people and harm ecosystems. We made magnetic nanoparticles and coated them with a sugar ring (beta-cyclodextrin). The coating traps dye molecules, and a magnet lets us pull the particles back out. In tests, the particles removed 87% of Coomassie Brilliant Blue in 3 minutes.
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Why is it important?
The adsorbent works very fast and reaches high uptake while staying easy to separate magnetically. It stays effective across different pH, temperatures, and even salty or sugary water. The particles can be regenerated and reused for multiple cycles, reducing cost and waste. Cell tests showed high viability in a human lung cell line across most tested doses. This supports practical, scalable dye-removal steps for wastewater treatment.
Perspectives
I found it most compelling that a simple sugar coating turned magnetic particles into rapid dye traps. A key design choice was pairing cyclodextrin’s “pocket” with cobalt ferrite so recovery is magnetic, not filtration. Testing stability across pH, salt, and glucose, and adding a cell-viability check, helped keep the work realistic. Next, I want to validate performance in real mixed wastewaters and track any metal release during repeated reuse. That will clarify where these particles can complement existing treatment trains.
Dr Daniel Ortega
Universidad de Cadiz
Read the Original
This page is a summary of: β-cyclodextrin coated cobalt ferrite nanoparticles (CoFe2O4@BCD NPs) synthesis & performance evaluation for effective dye adsorption, Journal of Molecular Structure, August 2025, Elsevier,
DOI: 10.1016/j.molstruc.2025.142217.
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