Pd-loaded “Two-in-one” Covalent Organic Framework Composite Material: Synthesis, Characterization and Detection of Bisphenol A

We report a novel type of Pd-BFBAPy-COF (Pd-COF) loaded with Pd-NPs was synthesized for the first time by using “two-in-one” imine covalent organic framework materials as carrier. By using BFBAPy-COF (Py-COF) as the carrier and H2PdCl4 as the palladium source, Py-COF and Pd-NPs were combined by a simple heating and reflux method to successfully prepare Pd-COF. Through X-ray photoelectron spectroscopy (XPS) and other methods, it is proved that the loading of Pd-NPs on Pd-COF is completed by coordination. Finally, the application of Pd-COF as electrode coating material in the detection of Bisphenol A (BPA) by differential pulse voltammetry (DPV) shows that Pd-COF has a good electrochemical induction to BPA. This work provides a cheap and facile synthesis route for the preparation of an electrochemical detection material with practical value. The preparation and characterization of composite Pd-COF materials based on “two-in-one” covalent organic framework materials are reported, and the detection effect of Pd-COF on bisphenol A by DPV method is discussed. As far as we know, this is the first time that a “two-in-one” covalent organic framework has been used in synthetic composites and test applications.