Highly efficient and recyclable silver-graphene oxide nano-composite catalyst in the acylation of amines under solvent-free condition

A silver and graphene oxide nanocomposite (Ag-GO) has been prepared by a facile chemical approach and analyzed by usual manner, such as powder x-ray diffraction (pXRD), scanning electron microscopy (SEM) transmission electron microscopy (TEM), UV-visible spectra (UV-vis) and thermogravimetric analysis (TGA). Ag-GO acts as a proficient heterogeneous nanocomposite catalyst demonstrating excellent catalytic activity for the acylation of amines with acetic acid without any solvent. Moreover, the catalyst is smoothly recoverable, and may be reused five times with no loss of catalytic activity toward the acylation of amines with acetic acid. It is expected that the silver-graphene oxide nanocomposite will find application in various catalytic fields.