MIL-125(Ti) is widely used in photocatalytic applications due to its excellent light absorption in the UV and visible range and high stability. It is particularly effective in the photocatalytic reduction of carbon dioxide (CO₂) into useful fuels such as methane and methanol under mild conditions. The material’s porous structure and titanium-oxo clusters enable efficient charge separation and active site availability, enhancing catalytic performance. It is also employed in hydrogen production via water splitting when modified with co-catalysts or functionalized with amino groups to extend light absorption. In environmental remediation, MIL-125(Ti) helps degrade organic pollutants like dyes and pharmaceuticals in wastewater under light irradiation. Additionally, it shows promise in gas storage and separation processes, especially for CO₂ capture, thanks to its tunable porosity and affinity for polar molecules. Its biocompatibility and large surface area make it a candidate for drug delivery systems, particularly for controlled release in therapeutic applications.