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Based on the fact that uranyl ions (UO22+) adsorbed on GO can enhanced the peroxidase-like activity of graphene oxide (GO), a novel colorimetric strategy for visualizing quantitative determination of uranyl… Click to show full abstract
Based on the fact that uranyl ions (UO22+) adsorbed on GO can enhanced the peroxidase-like activity of graphene oxide (GO), a novel colorimetric strategy for visualizing quantitative determination of uranyl ions was established. The peroxidase-like activity of GO-UO22+ nanocomposites was assessed by catalyzing H2O2 oxidation of TMB to produce a distinct color reaction. A good linearity between the UO22+ concentration and absorption at 652 nm was acquired in the range of 5.90 × 10-6 to 9.43 × 10-4 M with a detection limit of 4.70 μM. This strategy was also successfully applied to determination of uranyl ions in environmental water samples.
Journal Title: Journal of environmental radioactivity
Year Published: 2020
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