Quick and low cost synthesis of sulphur doped carbon dots by simple acidic carbonization of sucrose for the detection of Fe3+ ions in highly acidic environment

Abstract An easy, facile, low cost and quick synthesis of sulphur doped carbon dots (S-C-dots) was carried out by acidic carbonization of sucrose (carbohydrate) without using any sophisticated instrument. The resultant S-C-dots shows excellent photoluminescent behaviour in highly acidic media with a quantum yield of 5.77%. Moreover, the as synthesized S-C-dots can be used as a dual probe for selective detection of Fe3+ ions in highly acidic conditions by Fluorescence as well as UV–vis spectroscopy. Also, the residual waste generated during the synthesis of S-C-dots can be used as an activated carbon (AC) for the application in dye adsorption from aqueous solutions.

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