Mesoporous mixed metal oxides derived from P123-templated Mg–Al layered double hydroxides

• Published in: Journal of solid state chemistry Vol. 183; no. 11; pp. 2511 - 2515
• Main Authors: Wang, Jun, Zhou, Jideng, Li, Zhanshuang, He, Yang, Lin, Shuangshuang, Liu, Qi, Zhang, Milin, Jiang, Zhaohua
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 01.11.2010; Elsevier
• Subjects: ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ALUMINIUM HYDROXIDES; ALUMINIUM OXIDES; CALCINATION; CARBON COMPOUNDS; CARBONATES; Carriers; CATALYSTS; CHALCOGENIDES; CHEMICAL REACTIONS; Chemistry; CLATHRATES; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; DECOMPOSITION; DRUGS; Electron density of states and band structure of crystalline solids; Electron states; Exact sciences and technology; Fullerenes and related materials; intercalation compounds; Galleries; General and physical chemistry; General, apparatus; HYDROGEN COMPOUNDS; HYDROXIDES; Ibuprofen; Layered double hydroxides; Magnesium; MAGNESIUM CARBONATES; MAGNESIUM COMPOUNDS; MAGNESIUM HYDROXIDES; MAGNESIUM OXIDES; Materials science; Mesoporous; Metal oxides; Mixed metal oxides; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; Physics; Pluronic P123; Porosity; Porous materials; granular materials; PYROLYSIS; Specific materials; SPECIFIC SURFACE AREA; Surface physical chemistry; THERMOCHEMICAL PROCESSES; Mixed metal oxides; Pluronic P123; Mesoporous; Layered double hydroxides; Hydroxides; Catalysts; Porous materials; Template reaction; Specific surface area; Calcination; Drug carrier; Intercalation compounds; Mesoporosity; Template method; Pore size; Ibuprofen; Microstructure; Memory effect; Double layers
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2010.08.027

We report the preparation of mesoporous mixed metal oxides (MMOs) through a soft template method. Different amounts of P123 were used as structure directing agent to synthesize P123-templated Mg–Al layered double hydroxides (LDHs). After calcination of as-synthesized LDHs at 500 °C, the ordered mesopores were obtained by removal of P123. The mesoporous Mg–Al MMOs fabricated by using 2 wt% P123 exhibited a high specific surface area of 108.1 m 2/g, and wide distribution of pore size (2–18 nm). An investigation of the “memory effect” of the mesoporous MMOs revealed that they were successfully reconstructed to ibuprofen intercalated LDHs having different gallery heights, which indicated different intercalation capacities. Due to their mesoporosity these unique MMOs have particular potential as drug or catalyst carriers. Ordered mesoporous Mg–Al MMOs can be obtained through the calcination of P123-templated Mg–Al–CO 3 LDHs. The pore diameter is 2.2 nm. At the presence of ibuprofen, the Mg–Al MMOs can recover to Mg–Al–IBU LDHs, based on its “remember effect”. [Display omitted]