The amount of solvent used in synthesizing metal-organic frameworks (MOFs) affects their characteristics, including particle size, crystallinity, and porosity. To determine the optimal solvent amount, systematic variation of solvent volumes combined with characterization techniques like XRD and nitrogen adsorption analysis is essential.

Dear Safiah Almuqhawi

Referring to the work in [1] , I cite the following:

The X-ray diffraction results prove that the MOF cannot form in pure water or in a water/ethanol mixture with a small amount of ethanol. As the ethanol content exceeds 30 vol%, a crystalline MOF can be obtained.

The scanning electron microscope images of the as-synthesized MOFs show the formation of MOF nanoparticles with an average size of 20–300 nm. The MOF particle size decreased with increasing ethanol content in the mixed solvent.

The porosity of the MOFs was determined using a N2 adsorption–desorption method. When the ethanol volume ratio reached 75%, the largest SBET value of 1067 m2 g−1 and Vt value of 0.52 cm3 g−1 were obtained.

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[1]Article Solvent determines the formation and properties of metal-org...