Graphene Defects in Saccharide Carbon Dots Govern Electrochemical Sensitivity
Abstract Galactose (Gal), lactose (Lac), and glucose (Glu) derived carbon dots (CDs) were evaluated for their utility as electrochemical sensing composites using acetaminophen (APAP) as a probe molecule. The goal of this work is to ascertain the role of graphene defects on electrochemical activity. Higher sp2‐to‐sp3 hybridized carbon ratios (in parentheses) in the CDs correlated with higher sensitivity in the order according to measured Raman I G/I D intensities: GluCDs (6.53)<LacCDs (9.30)<GalCDs (10.18). A dynamic measurement in the 0–2.0 mmol dm−3 APAP range at pH=7.0 was achieved, suitable for practical APAP toxicity monitoring. Defect density within the GalCDs provided the highest sensitivity..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:33 |
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| Enthalten in: |
Electroanalysis - 33(2021), 11, Seite 2261-2266 |
| Beteiligte Personen: |
Chusuei, Charles C. [VerfasserIn] |
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| BKL: |
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| Anmerkungen: |
© 2021 Wiley‐VCH GmbH |
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| Umfang: |
6 |
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| doi: |
10.1002/elan.202100381 |
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| 520 | |a Abstract Galactose (Gal), lactose (Lac), and glucose (Glu) derived carbon dots (CDs) were evaluated for their utility as electrochemical sensing composites using acetaminophen (APAP) as a probe molecule. The goal of this work is to ascertain the role of graphene defects on electrochemical activity. Higher sp2‐to‐sp3 hybridized carbon ratios (in parentheses) in the CDs correlated with higher sensitivity in the order according to measured Raman I G/I D intensities: GluCDs (6.53)<LacCDs (9.30)<GalCDs (10.18). A dynamic measurement in the 0–2.0 mmol dm−3 APAP range at pH=7.0 was achieved, suitable for practical APAP toxicity monitoring. Defect density within the GalCDs provided the highest sensitivity. | ||
| 700 | 1 | |a Clark, Christopher J. |4 aut | |
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| 700 | 1 | |a Leblanc, Roger M. |4 aut | |
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