SYNTHESIS OF METAL-ORGANIC FRAMEWORK-199: COMPARISON OF MICROWAVE PROCESS AND SOLVOTHERMAL PROCESS

Tóm tắt

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 iso-therms 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.