High sensitivity detection of H2O2 and glucose based on carbon quantum dots-catalyzed 3, 3′, 5, 5′-tetramethylbenzidine oxidation

References

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title
DOI
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1284High sensitivity detection of H2O2 and glucose based on carbon quantum dots-catalyzed 3, 3′, 5, 5′-tetramethylbenzidine oxidationhttps://doi.org/10.1016/j.microc.2020.105365CarbonCarbon quantum dots (CQDs)

Materials

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size
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BET
b nanozyme
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1284CQDs3.1nmTEMAs can be observed, the CQDs are almost monodispersed spheres (Fig. 1A) with a uniform size distribution between 1.63 and 4.26 nm and an average diameter of 3.01 nm (Fig. 1B) based on measurements of 100 particles.

Kinetics

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pH
T
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vmax
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vmax 10n
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kcat
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1284CQDsPODH2O20.16mM4.38-8nM/s1/s1284M-1 s-11284
1284CQDsPODTMB0.6mM2.15-8nM/s1/s1284M-1 s-11284

Applications

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method
linear range
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LOD
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1284CQDsquantitative detection of H2O2H2O2Colorimetric5.00–60.0μM0.86μM