New micro/nanocomposite with peroxidase-like activity in construction of oxidases-based amperometric biosensors for ethanol and glucose analysis

References

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title
DOI
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1138New micro/nanocomposite with peroxidase-like activity in construction of oxidases-based amperometric biosensors for ethanol and glucose analysishttps://doi.org/10.1016/j.aca.2020.11.052Compositecarbon microfibers (CF) by hemin (H) and gold (Au) nanoparticles

Materials

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BET
b nanozyme
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sa 10n
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1138CF-H-Au200μmSEMThe formation of Au on the surface of CF fragments with a size up to 200 μm (obtained by pre-ultrasonic treatment) is much more efficient (light areas) compared to larger CF fragments (dark areas) (see figs2, figs3).

Kinetics

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T
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1138GOX–CF–H-AuPODglucose1.470.28mM12.61.5μA1138
1138AOX–CF–H-AuPODethanol0.140.01mM8.160.16μA1138
1138CF-HPODH2O24.7mM1138
1138CF-H-AuPODH2O22.87mM1138

Applications

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method
linear range
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1138GOX–CF–H-Audetection to glucoseglucoseE-chem0.1–0.9mM0.05mM
1138AOX–CF–H-Audetection to ethanolethanolE-chem0.01–0.15mM0.005mM