MIL-125(Ti) Metal Organic Frameworks (MOFs) Powder for Gas Absorption, Separation, and Photocatalysis, CGASPCMOFMIL125Ti
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MIL-125(Ti) (Ti8O8(OH)4(BDC)6, whereBDC = 1,4-benzenedicarboxylate) is a titanium-based metal-organic framework with a quasi-body-centered tetragonal (fcu-like) topology. It is constructed from cyclic, octameric titanium-oxo clusters (Ti8O8(OH)4) cross-linked by 12 ditopic terephthalate linkers, forming a 3D porous network that mimics the photoactivity of titanium dioxide (TiO2) while providing defined crystalline microporosity.
For photocatalysis, the key structural and functional features of the MIL-125(Ti) are: (1) Dual Microporous Cage Architecture: Octahedral Cages: ~ 12.5 Å internal diameter. Tetrahedral Cages: ~ 6.1 Å internal diameter. Window Apertures: Triangular microporous windows of ~ 5.0–6.0 Å. (2) Semiconductor-Like Photoredox Behavior: Valence & Conduction Bands: The highest occupied crystal orbital (HOCO / valence band) is dominated by the π orbitals of the BDC organic linker (and O 2p), while the lowest unoccupied crystal orbital (LUCO / conduction band) is composed of empty Ti 3d orbitals. Optical Bandgap: Pristine MIL-125 exhibits an optical bandgap of ~ 3.6–3.8 eV (UV absorption edge ~ 350 nm). Reversible Ti^{4+} / Ti^{3+} Photo-Switching: Photoexcitation induces Ligand-to-Metal Charge Transfer (LMCT), transiently reducing Ti^{4+} to long-lived Ti^{3+} centers (evidenced by a reversible color shift to blue/grey under UV/inert conditions).
| Part Number | CGASPCMOFMIL125Ti (C-GASPC-MOF-MIL125Ti) |
| CAS | 1193372-03-0 |
| Chemical Formula | C48H28O36Ti8 |
| Color | White Powder |
| Average Sizes | ~300-500 nm |
| BET | >1100 m2/g |
| Pore Size | 0.5-0.7 nm |
| Primary Applications |
Gas absorption, storage, and separation. Wastewater treatment, ion separation Photocatalysis |
| Package Grade | 5 g/bottle |
References:
- C. Wang, et al., Titanium-Oxo Cluster Assisted Fabrication of a Defect-Rich Ti-MOF Membrane Showing Versatile Gas-Separation Performance, Angew Chem Int Ed, 2022, 61, e202203663
- M. W. Anjum, et al., MIL-125(Ti) based mixed matrix membranes for CO2 separation from CH4 and N2, Journal of Membrane Science, 2016, 502, 21-28.