synthesis of different copper oxide nano-structures from direct thermal decomposition of porous copper(ιι) metal-organic framework precursors

copper oxide nanostructures have been successfully synthesized via one-step solid-state thermolysis of two metal-organic frameworks, [cu3(btc)2] (1) and [cu(tpa).(dmf)] (2), (btc = benzene-1,3,5-tricarboxylate, tpa = therephtalic acid = 1,4-benzendicarboxylic acid and dmf = dimethyl formamide) under air atmosphere at 400,  500, and 600°c. it has also been found that the reaction temperature plays a substantial role in the formation of copper oxide nanostructures. the obtained products were characterized by x-ray powder diffraction (xrpd),  energy dispersive x-ray microanalysis (edx), and scanning electron microscopy (sem). different reaction conditions were discussed. this study demonstrates that the metal-organic frameworks can be used as precursors for the preparation of nanoscale materials with difference and remarkable morphologies.