Fig. 3.

Formation of hexagonal boron nitride (h-BN)-molecularly imprinted polymers and the solid-phase extraction process. The h-BN was mixed with EGDMA as a crosslinking agent, AIBN as an initiator, methanol as a porogen, and quercetin as a template. Afterward, the product was leached by methanol in a Soxhlet extractor. Reprinted with permission of Springer from ref. (Li and Row 2019). h-BN hexagonal boron nitride; h-BN-MIP hexagonal boron nitride-molecularly imprinted polymer; MIP molecularly imprinted polymer; EGDMA ethylene glycol methacrylate; AIBN 2,2-azobisisobutyronitrile; HPLC high-performance liquid chromatography