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Transforming organic waste: Cabbage-derived carbon containing copper for electrochemical sensing of ascorbic acid
Abstract
This study presents a sustainable approach for transforming food waste into functional electrochemical materials by utilizing copper-enriched cabbage leaves as a precursor for carbon-based sensors. Chinese cabbage was soaked in aqueous solutions of Cu(NO₃)₂, CuSO₄, and Cu(CH₃COO)₂, followed by pyrolysis, which resulted in carbona- ceous materials with distinct structural and electrochemical characteristics. Raman spectroscopy and XPS confirmed the formation of both amorphous and crystalline carbon domains and the presence of copper in various oxidation states. Among the synthesized materials, the carbon derived from cabbage soaked in 0.5 M Cu (NO₃)₂ and pyrolyzed from the middle part of the leaf exhibited superior electrochemical properties. This ma- terial demonstrated excellent sensitivity towards ascorbic acid detection equal to 3.91 μA/μM⋅cm2, with a linear response ranging from 0.2 μM to 7 mM, and a detection limit of 0.05 μM. The sensor showed high selectivity in the presence of interfering species and performed well in real sample analysis using orange juice. These results demonstrate the potential of upcycled cabbage waste as a low-cost, green precursor for electrochemical sensing platforms, offering both environmental and biomedical benefits.
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Authors (6)
-
Wiktoria Lipińska
- IMP PAN
-
Siuzdak Katarzyna dr hab. inż
- IMP PAN
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
-
Sustainable Materials and Technologies
ISSN: 2214-9937 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Lipińska W., Łepek A., Wolff S., Ryl J., Nowak A., Katarzyna S., Transforming organic waste: Cabbage-derived carbon containing copper for electrochemical sensing of ascorbic acid, Sustainable Materials and Technologies,2025, iss. 45,10.1016/j.susmat.2025.e01434
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.susmat.2025.e01434
- Sources of funding:
-
- IDUB
- Verified by:
- Gdańsk University of Technology
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