ZR-BASED METAL-ORGANIC FRAMEWORK (MOF) MORPHOLOGY CONTROL BY SYNTHESIS METHOD VARIATION

• Main Author: Aditya Atmaja, Taqwa
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/75066
• Institution: Institut Teknologi Bandung

Zr-based metal-organic framework (MOF) is a promising type of material for various applications, such as gas absorption, sensor, and catalyst. One of the factors controlling the properties of a MOF is its morphology, for example a hierachical MOF morphology would help in its use as a sensor, while a defect- rich morphology would help in its application for gas absorption. Besides that, the difference in ligand used can also cause variations in morphology, for example the pores in MOFs using 4,4- biphenyldicarboxylate as ligand are larger than those in MOFs using terephthalic acid. In this research, two variations of linker ligands, which are terephthalic acid and trimesic acid, as well as three variations in synthesis method, which are solvothermal, ball-mill, and solvent exchange with addition of polyvinylpyrrolidone (PVP) were examined for their effects on the morphology of synthesized Zr-based MOFs. MOF-808 and UiO-66 were chosen as the synthesized MOFs due to their high thermal and chemical stability, as well as their ease of synthesis, based on previous researches. These two MOFs were characterized using PXRD, FTIR, and SEM. From the obtained results, it was found that MOFs using terephthalic acid as ligand, such as UiO-66 were easier to synthesize compared to those using trimesic acid, such as MOF- 808, and MOFs synthesized by different methods would result in different morphologies too.