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Herein, uric acid@Ti3C2 quantum dots (UA@Ti3C2 QDs) were synthesized via a microwave-assisted strategy on the basis of acid etching and stripping. The UA@Ti3C2 QDs have bright blue emission. Intriguingly, the fluorescence emission of the UA@Ti3C2 QDs was significantly quenched after the addition of 2,4,6-trinitrophenol (TNP), due to inner-filter effect (IFE). Based on these findings, a novel environmentally friendly and water-soluble fluorescence probe based on UA@Ti3C2 QDs was demonstrated for the sensitive and selective detection of T