Designable Metal/PMO Nanocomposite and Preparation by a Surface Imprinting Technique Combined with a Sol–Gel Process for Catalytic Click Reaction

Abstract

Novel metal/periodic mesoporous organosilica nanocomposites were prepared through metal template (Cu, Zn, Ni, and Co) imprinted ligand into periodic mesoporous organosilica (PMO) and their application as a recyclable catalyst in click synthesis of β-hydroxytriazoles described. The structure of the nanocomposite was characterized by X-ray diffraction (XRD), Fourier transform-infrared (FT-IR) spectroscopy, N2 adsorption–desorption analysis, scanning electron microscopy (FE-SEM), energy-dispersive spectrometer (EDS), and thermogravimetric analysis (TGA). The results showed that the copper-imprinted periodic mesoporous organosilica nanocomposite (Cu/PMO NC) as a catalyst had good catalytic activity and short reaction times toward the multicomponent reaction for synthesis of β-hydroxytriazoles. Furthermore, the catalyst was regenerated and reused in the reaction for six cycles.