A CsPbBr₃ quantum dots/ultra-thin BN fluorescence sensor for stability and highly sensitive detection of tetracycline

The abuse of tetracycline (TC) antibiotics would seriously affect human health and hence the detection had become essential. Here, we had constructed a hydrophobicity of fluorescence sensor based on the excellent photoluminescence emission of CsPbBr₃ QDs and the hydrophobic ability of Boron Nitride (BN). This design effectively solved the instability of CsPbBr₃ QDs and realized the sensitive detection of TC. Under optimum conditions, the linear range of TC was 0–0.44 mg L⁻¹ with the 6.5 μg L⁻¹. Furthermore, the sensor was successfully used for the recognition of TC in honey and milk samples. This work also provided an ideal for designing CsPbBr₃ QDs-based on fluorescence sensor.