Enhanced peroxidase-like activity of boron nitride quantum dots anchored porous CeO2 nanorods by aptamer for highly sensitive colorimetric detection of kanamycin

References

ref title DOI material type comment
4254 1067 Enhanced peroxidase-like activity of boron nitride quantum dots anchored porous CeO2 nanorods by aptamer for highly sensitive colorimetric detection of kanamycin https://doi.org/10.1016/j.snb.2020.129318 Composite boron nitride quantum dots anchored porous CeO2 nanorods (BNQDs/CeO2)

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
8134 1067 BNQDs/CeO2 TEM the synthesized BNQDs display a uniformly spherical shape and its average lateral size is about 2 nm (inset of Fig. 1A). Fig. 1B shows that CeO2/Ce(OH)3 precursor is non-porous rod-like morphology with length ranging from 60 to 80 nm and diameter of ∼8 nm. According to the high-resolution TEM (HRTEM) image of BNQDs/CeO2 (inset in Fig. 1D), the lattice fringes with 0.32 nm was attribute to typical (111) facet of CeO2, while the interplanar spacing of 0.21 nm corresponded to (100) crystal plane of BNQDs, further revealing the presence of BNQDs [39]. 130.93
8133 1067 PN-CeO2 2~4 nm TEM And the TEM of PN-CeO2 shows that the surface of rod-like structure become rough relative to pristine precursor, meanwhile, a porous feature is observed with diameter of 2∼4 nm (Fig. 1C). 147.70

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
7028 1067 BNQDs/CeO2 POD TMB 0.44 mM 6.13 -8 M/s 1067 1067
7027 1067 BNQDs/CeO2@Apt POD TMB 0.19 mM 8.76 -8 M/s 1067 1067
7026 1067 BNQDs/CeO2@Apt POD H2O2 4.53 mM 10.21 -8 M/s 1067 1067
7025 1067 BNQDs/CeO2 POD H2O2 10.9 mM 4.8 -8 M/s 1067 1067

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5980 1067 BNQDs/CeO2 detection of kanamycin kanamycin Color 0.01-100 nM 4.6 pM