Fabrication of Pd@ZnNi‐MOF/GO Nanocomposite and Its Application for H2O2 Detection and Catalytic Degradation of Methylene Blue Dyes

Abstract ZnNi‐MOF/GO hybrid with layered structures were synthesized by a simple solvothermal method. We use ZnNi‐MOF/GO as the support material for Pd nanoparticles, and synthesize a highly active Pd@ZnNi‐MOF/GO nanocomposite. The structure, morphology and composition of the nanocomposite were studied by X‐ray diffraction (XRD), transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy (XPS). In addition, Pd@ZnNi‐MOF/GO nanocomposite can be called a nanozyme with peroxidase‐like activity, the nanocomposite was applied for the detection of hydrogen peroxide (H 2 O 2 ) and the degradation of methylene blue (MB) dyes. The nanocomposite showed the high peroxidase‐like activity towards 3,3′,5,5′‐tetramethylbenzidine (TMB) with a visual color change in the presence of H 2 O 2 . The nanocomposite also showed the good catalytic activity in the degradation of methylene blue dyes. The nanocomposite has the advantages of convenient preparation, good stability, and excellent reproducibility. Hence, Pd@ZnNi‐MOF/GO is a promising catalyst with wide application.