Abstract
As a typical genotoxic impurity (GTI), the concentration of benzo(a)pyrene (BaP) must be below the threshold of toxicological concern (TTC). However, achieving a trace BaP is a significant challenge by conventional separation media. Utilizing the unique recognition capabilities of surface molecular imprinting polymers (SMIPs), the versatility of N-vinyl-2-pyrrolidone deep eutectic solvents (NVP-DES), and the high surface area of two-dimensional nano-boron nitride (2D-nano-BN) sheets, a series of functionalized 2D-BN materials were prepared (NVP-DES-SMIP@2D-nano-BN) for the specific recognition and removal of BaP. Utilizing 2D-nano-BN sheets as the base, four NVP-DESs were employed as monomers, BaP as the template, EGDMA as the cross-linker, and BPO/DMA as the initiator to prepare NVP-DES-SMIP@2D-nano-BN. The free energy of DES was computed using Gaussian software, and characterization of NVP-DES-SMIP@2D-nano-BN was performed using Fourier transform infrared spectroscopy and transmission electron microscopy. Quantitative and qualitative determinations of BaP were conducted using high performance liquid chromatography and fluorescence. Using a recognition model, NVP-DES-SMIP@2D-nano-BN exhibited a Freundlich isotherm fit and second-order kinetics for BaP.
Published Version
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