UiO-66 is widely used in gas storage and separation due to its high surface area and stability. It is particularly effective in capturing carbon dioxide, making it valuable for reducing greenhouse gas emissions. In catalysis, UiO-66 serves as a support for various reactions, including oxidation and hydrogenation, thanks to its porous structure and thermal stability. It is also employed in water purification, where it adsorbs heavy metals and organic pollutants efficiently. Additionally, UiO-66 finds applications in drug delivery systems, where its controlled release properties enhance therapeutic outcomes. Its robustness and versatility make it a promising material in environmental and biomedical fields.