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Co3O4@ β-cyclodextrin with synergistic peroxidase-mimicking performance as a signal magnification approach for colorimetric determination of ascorbic acid

References

ref title DOI material type comment
3381 150 Co3O4@ β-cyclodextrin with synergistic peroxidase-mimicking performance as a signal magnification approach for colorimetric determination of ascorbic acid https://doi.org/10.1016/j.snb.2019.127106 Metal oxide Co3O4@β-cyclodextrin nanoparticles

Materials

ref material size size err size unit size type size comment BET b nanozyme b 10n b unit specific act sa 10n sa unit comment
7440 150 Co3O4@β-CD NPs 10 nm TEM The morphology of Co3O4@β-CD NPs showed well dispersed nanoparticles in the size of 10 nm.

Kinetics

ref material enzyme type substrate pH T km km err km 10n km unit vmax vmax err vmax 10n vmax unit kcat kcat err kcat 10n kcat unit kcat/km kcat/km 10n kcat/km unit comment
6031 150 Co3O4 NPs POD TMB 0.25 mM 1.85 -8 M/s 150 2 M-1 s-1
6030 150 Co3O4@β-CD NPs POD H2O2 1.42 mM 2.85 -8 M/s 150 150
6029 150 Co3O4 NPs POD H2O2 5.17 mM 1.79 -8 M/s 150 150
6028 150 HRP POD H2O2 1.59 mM 10.99 -8 M/s 150
6027 150 HRP POD TMB 0.52 mM 8.54 -8 M/s 150
6026 150 Co3O4@β-CD NPs POD TMB 0.17 mM 2.81 -8 M/s 150 3 M-1 s-1 150

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5053 150 Co3O4@β-CD NPs detection of L-Ascorbic acid L-Ascorbic acid Color 0.01-0.6 mM 1.09 μM 96.8% - 113.0% Besides, in order to investigate the precision of Co3O4@β-CD NPs detection method, recovery experiments were made by adding a serious of AA solution with different concentration. As shown in Table S3, the average recovery of all the samples was range from 96.8% to 113.0%.
5052 150 Co3O4@β-CD NPs detection of L-Ascorbic acid L-Ascorbic acid Color 0.01-0.6 mM 1.09 μM 96.8% - 113.0%
5051 150 Co3O4 NPs detection of L-Ascorbic acid L-Ascorbic acid Color 0.01-0.35 mM 3.91 μM


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