Gold nanobipyramids/MXene@PVDF membrane material for SERS detection and sensitive determination of fluorescent dyes

Au BPs/MXene mixtures were composited with PVDF membranes by vacuum filtration, which enabled the sensitive detection. It combined electromagnetic mechanism and chemical mechanism to achieve a synergistic enhancement of the detection, resulting in a good stability of the SERS substrate. With fluorescent dyes including rhodamine 6G and methylene blue as templates for the SERS sensor, the SERS substrate possessed high sensitivity and reproducibility on account of the strong interactions between the dye molecules and the Au BPs/MXene. In addition, the photochemical performance of the composite membrane material for rhodamine 6G and methylene blue was investigated, which demonstrated the potential of AuBPs/MXene@PVDF membrane for photochemical applications. The study of the SERS detection and photochemical degradation performance of the composite membrane material in different water sources demonstrated that the excellent testing capability of the AuBPs/MXene@PVDF membrane material can be used for reliable and highly sensitive monitoring and application in water environment analysis.