Electrodeposition-Assisted Rapid Preparation of Pt Nanocluster/3D Graphene Hybrid Nanozymes with Outstanding Multiple Oxidase-Like Activity for Distinguishing Colorimetric …

References

ref title DOI material type comment
3652 465 Electrodeposition-Assisted Rapid Preparation of Pt Nanocluster/3D Graphene Hybrid Nanozymes with Outstanding Multiple Oxidase-Like Activity for Distinguishing Colorimetric … https://doi.org/10.1021/acsami.9b23546 Composite Pt nanoclusters (Pt NCs) grafted onto three-dimensional graphene foam (3D GF)

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
7699 465 Pt NC/3D GF nanohybrid SEM As shown in Figure 1A, 3D GF displays a regular three-dimensional porous structure, in which the pore diameter is 100–200 μm. The color of the Pt NC/3D GF nanohybrid was deeper than that of pure 3D GF, demonstrating that Pt NC was evenly anchored on 3D GF (Figure 1A inset). The transmission electron microscopy (TEM) images (Figure 1C,D) revealed that interconnected 3 nm Pt nanocrystals formed Pt nanoclusters on the 3D GF. In addition to the high surface area provided by the special 3D macroporous structure of 3D GF (∼850 m2/g bare 3D GF estimated by the Brunauer–Emmett–Teller method(50))

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
6323 465 Pt NC/3D GF nanohybrid OXD TMB 0.089 mM 2.74 -7 M/s 465

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5394 465 Pt NC/3D GF nanohybrid Detection of Catechol and Hydroquinone HQ Color 0.05–1 and 1–50 μM 10 nM 95.8-99.6% different concentrations of HQ were spiked in the systems containing CC and then analyzed with the means
5393 465 Pt NC/3D GF nanohybrid Detection of Catechol and Hydroquinone Catechol Color 0.5-800 μM 50 nM
5392 465 Pt NC/3D GF nanohybrid Detection of Catechol and Hydroquinone HQ Color 0.05–1 and 1–50 μM 10 nM 95.8-99.6%
5391 465 Pt NC/3D GF nanohybrid Detection of Catechol and Hydroquinone Catechol Color 0.5-800 μM 50 nM As shown in Figure 6, after incubation with the Pt NC/3D GF nanohybrid in pH 7.0 BR buffer at 30 °C for 15 min, the absorbance of the system at 388 nm gradually increased with the increase of catechol concentration.