Determination of the mechanism of sorption of Cu2+ ions to hydrolyzed fibroin

  • Abstract
  • Keywords
  • References
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  • Abstract

    We were able to obtain hydrolyzed fibroin with sorbing properties from fibrous silk waste. We determined the mechanism of sorption of Cu2+ ions into hydrolyzed fibroin using the Dubinin-Radushkevich isotherm. Physical sorption of Cu2+ ions to hydrolyzed fibroin has been shown to be predominant. However, it has been observed that the colour of hydrolyzed fibroin, which sorbs Cu2+ ions, changes to yellow over time. Analysis of the yellowed sample by IR spectroscopy showed that Cu2+ ions formed a coordinate bond with the hydrolyzed fibroin.



  • Keywords

    Hydrolyzed fibroin (“HF”); sorption; IR spectroscopy; silk; coordinate bond

  • References

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Article ID: 31998
DOI: 10.14419/ijac.v10i1.31998

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