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• W3200538404 endingPage "6353" @default.
• W3200538404 startingPage "6353" @default.
• W3200538404 abstract "Water pollution caused by hexavalent chromium (Cr(VI)) ions represents a serious hazard for human health due to the high systemic toxicity and carcinogenic nature of this metal species. The optical sensing of Cr(VI) through specifically engineered nanomaterials has recently emerged as a versatile strategy for the application to easy-to-use and cheap monitoring devices. In this study, a one-pot oxidative method was developed for the cage opening of C60 fullerene and the synthesis of stable suspensions of N-doped carbon dots in water-THF solutions (N-CDs-W-THF). The N-CDs-W-THF selectively showed variations of optical absorbance in the presence of Cr(VI) ions in water through the arising of a distinct absorption band peaking at 550 nm, i.e., in the transparency region of pristine material. Absorbance increased linearly, with the ion concentration in the range 1-100 µM, thus enabling visual and ratiometric determination with a limit of detection (LOD) of 300 nM. Selectivity and possible interference effects were tested over the 11 other most common heavy metal ions. The sensing process occurred without the need for any other reactant or treatment at neutral pH and within 1 min after the addition of chromium ions, both in deionized and in real water samples." @default.
• W3200538404 created "2021-09-27" @default.
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• W3200538404 date "2021-09-23" @default.
• W3200538404 modified "2023-10-01" @default.
• W3200538404 title "Colorimetric Detection of Chromium(VI) Ions in Water Using Unfolded-Fullerene Carbon Nanoparticles" @default.
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• W3200538404 doi "https://doi.org/10.3390/s21196353" @default.
• W3200538404 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8512488" @default.
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• W3200538404 hasPublicationYear "2021" @default.
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