Comparative Study on Synthesis of Metal Organic Framework-199 by Microwave and Solvolthermal Process

Abstract

In the present paper, a comparative study on the synthesis of the metal-organic framework-199 (MOF-199) using the microwave and solvothermal method was demonstrated. The obtained materials were characterized using X-ray diffraction, scanning electron microscope, nitrogen adsorption/desorption isotherms and thermal gravity. The microwave synthesis of MOF-199 was compared with the conventional hydrothermal synthesis. The results showed that MOF-199 could be obtained in a much shorter time with improved yield and textural properties under the microwave irradiation. It is supposed that the microwave energy emitted fast and uniformly, creating nuclei through the solution which quickly grew to crystals, and both the nucleation and crystallization were accelerated. This made the microwave synthesis advantageous over the solvothermal synthesis.

The Properties of Microwave-Assisted Synthesis of Metal–Organic Frameworks and Their Applications

“…MOF-199 or HKUST-1([Cu 3 (BTC) 2 ] [BTC = 1,3,5-benzenetricarbox-ylate]) has a significant structure based on its high chemical stability and pore volume. It was synthesised by using MW within 30 min with a yield of 77% [ 84 ]. The crystal size was increased by enhancing the time of crystallisation on the basis of Ostwald ripening, according to which large homogeneous crystals were formed from the smaller octahedron units of crystals.…”