Synthesis of blue emissive carbon dots using Colocasia esculenta corm peel waste for the fluorescence detection of pendimethalin and MnO4- ion

초록

A waste to best eco-friendly approach is developed to prepared the carbon dots (CDs) using Colocasia esculenta (c. esculenta) corm peel waste, demonstrates a sustainable route for the advancement of green nanotechnology. The prepared CDs, named as CECDs, emitted blue fluorescence at 421 nm upon excitation at 334 nm, with a quantum yield of 49.74%. The size of the prepared CECDs is 2.7 nm, and utilized for the sensing of target analytes. The blue fluorescence of CECDs was significantly reduced upon the addition of pendimethalin (PM) and MnO4- ions, indicating the viability of building a sensitive turn-off nanoprobe. The CECDs-based approach offers favorable linear range for both analytes in the range of 0.05–25 and 0.025–10 μM, with the detection limits of 24.32 and 16.30 nM for PM and MnO4-, respectively. The practical use of the developed blue-emissive CECDs showed favorable recovery rates for PM and MnO4- ions assays in vegetable and water samples, respectively.

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