Graphene quantum dot-enhanced Chemiluminescence sensor based on surface molecular imprinting recognition for the detection of Tetrabromobisphenol A.

Herein, silica nanoparticles were employed as the carrier for surface molecular imprinted polymer with high selectivity for Tetrabromobisphenol A (TBBPA). Nitrogen-doped graphene quantum dots (NGQDs) were incorporated to enhance the chemiluminescence intensity of the Luminol-HO system, as TBBPA was found to effectively suppress the chemiluminescence signal of this system. Based on these principles, a molecular imprinting technique-chemiluminescence (MIT-CL) sensor was developed by integrating the NGQDs-sensitized Luminol-HO chemiluminescence system with the specific recognition material SiO@TBBPA MIP was constructed to detect TBBPA in environmental water samples. Under the optimal conditions, the sensor exhibited a linear detection range of 8.0 × 10-2.0 × 10 mol/L, with the detection limit (3σ/k) of 3.2 × 10 mol/L. The illustrated MIT-CL method was utilized for the detection of TBBPA in water samples, yielding satisfactory recovery rates ranging from 96.25 % to 107.50 %.