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- W2912796266 abstract "In spite copper oxide being one of the essential micronutrient, copper oxide in its nano size is found to be toxic in nature; this instigates for the detection of copper oxides in trace levels. In the present study, we demonstrate simple cost effective detection method for CuO/Cu2O using carbon quantum dots (CQD) by fluorescence quenching technique. CuO/Cu2O nanoparticles are synthesised by mere variation of fuel ratio by solution combustion technique. The resulting oxides are characterized by various analytical and spectroscopic techniques. Powder X- ray diffraction (PXRD) results reveals that samples prepared with oxidizer to fuel (O/F) ratios 1:1, 1:1.5 and 1:2 showed pure nano CuO, major CuO phase (minor Cu2O) and major Cu2O phase (minor CuO) respectively. Further, the samples prepared using 1:1 O/F ratio and calcinated at 700 °C showed highly crystalline CuO phase. In order to study the interaction of CuO/ Cu2O with CQDs the fluorescence quenching method has been employed. The bimolecular quenching rate constants for the samples prepared with different O/F ratios have been measured. The interaction between CQDs and copper oxides, indicates fluorescence quenching greatly depends on the oxidation state of the copper oxide and can be a promising method for detecting CuO/Cu2O through CQDs." @default.
- W2912796266 created "2019-02-21" @default.
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- W2912796266 date "2019-05-01" @default.
- W2912796266 modified "2023-10-18" @default.
- W2912796266 title "Understanding the interaction of carbon quantum dots with CuO and Cu2O by fluorescence quenching" @default.
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- W2912796266 doi "https://doi.org/10.1016/j.jhazmat.2019.02.008" @default.
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