Intrinsic peroxidase-like activity of graphene nanoribbons for label-free colorimetric detection of dopamine

References

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669Intrinsic peroxidase-like activity of graphene nanoribbons for label-free colorimetric detection of dopaminehttps://doi.org/10.1016/j.msec.2020.111034CarbonGraphene nanoribbons (GNR) with intrinsic peroxidase mimic activity were introduced as a nanozyme with catalytic activity in oxidation of a typical chromogenic peroxidase substrate, 3,3′,5,5′-tetramethylbenzidine (TMB), in the presence of H2O2.

Materials

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BET
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669GNR32nmTEMAlso, Fig. S1 shows another TEM image of GNR which can also demonstrate the yield of MWCNT unzipping and GNR production. The FESEM images of MWCNT and GNR are shown in Fig. 2c and d, respectively. According to Fig. 2c, the average size of the synthesized GNR was found to be about 32 nm.410

Kinetics

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669GNRPODH2O24.0353.52mM3.09-8M/s669
669GNRPODTMB4.0350.42mM1.58-8M/s669

Applications

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669GNRdetection of dopamineDAColor0.1–1, 2.5–50μM0.035μM90-110%