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Colorimetric Detection of Kanamycin Residue in Foods Based on the Aptamer-Enhanced Peroxidase-Mimicking Activity of Layered WS2 Nanosheets

References

ref title DOI material type comment
4243 1056 Colorimetric Detection of Kanamycin Residue in Foods Based on the Aptamer-Enhanced Peroxidase-Mimicking Activity of Layered WS2 Nanosheets https://doi.org/10.1021/acs.jafc.1c00925 Sulfide layered WS2 nanosheets

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
8118 1056 WS2 nanosheets TEM&AFM The morphological characteristics of the exfoliated WS2 nanosheets were observed by TEM (Figure 1a). The WS2 nanosheets display a wrinkle shape due to partial overlap and folding, and the diameter of the layered nanosheets ranges from 50 to 300 nm. The AFM image in Figure 1b further proves the above-mentioned morphology and size of layered nanosheets, indicating that the thickness of the WS2 nanosheets is about 13 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
7006 1056 WS2 nanosheets POD TMB 11.584 mM 2.364 -8 M/s 1056 1056
7005 1056 WS2 nanosheets POD H2O2 0.714 mM 1.02 -8 M/s 1056 1056
7004 1056 WS2 nanosheets POD TMB 9.12 mM 4.795 -8 M/s 1056 1056
7003 1056 WS2 nanosheets POD H2O2 0.702 mM 1.93 -8 M/s 1056 1056
7002 1056 WS2 nanosheets POD TMB 4.437 mM 10.865 -8 M/s 1056 1056
7001 1056 WS2 nanosheets POD TMB 5.175 mM 5.096 -8 M/s 1056 1056
7000 1056 WS2 nanosheets POD H2O2 0.713 mM 3.145 -8 M/s 1056 1056
6999 1056 WS2 nanosheets POD TMB 12.125 mM 2.036 -8 M/s 1056 1056
6998 1056 WS2 nanosheets POD H2O2 0.756 mM 0.844 -8 M/s 1056 1056
6997 1056 WS2 nanosheets POD H2O2 0.696 mM 7.506 -8 M/s 1056 1056

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5964 1056 WS2 nanosheets Detection of Kanamycin Kanamycin Color 0.1-0.5 μM 0.06 μM


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