<scp>l</scp>-Phenylalanine-Imprinted Electrochemical Sensor Based on WS₂ Nanoflowers on N,B-Doped Graphene and Its Application to Milk Samples

Phenylketonuria (PKU) is a critical disease in the disorder of amino acid metabolism, which mostly emerges children. The most common method used PKU treatment detection l-phenylalanine (PHEA) as biomarker PKU. In present work, new molecularly imprinted electrochemical electrode based on WS2 nanoflowers (NFs) N,B-doped graphene (WS2 NFs/N,B-GR) presented for PHEA assay milk samples. First all, NFs/N,B-GR was synthesized via high-efficiency hydrothermal synthesis. Cyclic voltammetry applied to cell, including template molecule and pyrrole monomer, form PHEA-imprinted electrodes. Then, structural morphological features NFs were investigated detail by various analytical methods. limit quantification values obtained 1.0 × 10–11 3.0 10–12 M, respectively, electrode. Finally, sensor having high degree selectivity, stability, reusability literature early diagnosis