Hierarchically ordered oxides
Peidong Yang,Tao Deng,Dongyuan Zhao,Pingyun Feng,David J. Pine,Bradley F. Chmelka,George M. Whitesides,Galen D. Stucky +7 more
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TLDR
Porous silica, niobia, and titania with three-dimensional structures patterned over multiple length scales were prepared by combining micromolding, polystyrene sphere templating, and cooperative assembly of inorganic sol-gel species with amphiphilic triblock copolymers.Abstract:
Porous silica, niobia, and titania with three-dimensional structures patterned over multiple length scales were prepared by combining micromolding, polystyrene sphere templating, and cooperative assembly of inorganic sol-gel species with amphiphilic triblock copolymers. The resulting materials show hierarchical ordering over several discrete and tunable length scales ranging from 10 nanometers to several micrometers. The respective ordered structures can be independently modified by choosing different mold patterns, latex spheres, and block copolymers. The examples presented demonstrate the compositional and structural diversities that are possible with this simple approach.read more
Citations
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Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applications
Xiaobo Chen,Samuel S. Mao +1 more
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On the Controllable Soft-Templating Approach to Mesoporous Silicates
Ying Wan,Dongyuan Zhao +1 more
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New approaches to nanofabrication: molding, printing, and other techniques.
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Chemical strategies to design textured materials: from microporous and mesoporous oxides to nanonetworks and hierarchical structures.
Abstract: 3.
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Characterization of the Porous Structure of SBA-15
TL;DR: In this paper, Zhao et al. used powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), and nitrogen adsorption to characterize SBA-15 ordered mesoporous silicas.
References
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Synthesis of mesoporous silica with large pores and bimodal pore size distribution by templating of polymer latices.
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Magnetic Field Alignment of Ordered Silicate-Surfactant Composites and Mesoporous Silica
TL;DR: In this paper, the macroscopic orientational ordering of the pores of condensed hexagonal mesostructured silica (MCM-41) was achieved through alignment of an unpolymerized, hexagonal, lyotropic silicate-surfactant liquid crystal in a high magnetic field.
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Macroporous Membranes with Highly Ordered and Three‐Dimensionally Interconnected Spherical Pores
Sang Hyun Park,Younan Xia +1 more
TL;DR: In this article, the authors demonstrated the fabrication of highly ordered three-dimensional macroporous membranes with crystalline assemblies of monodispersed mesoscale particles (∼200 nm to ∼10 μm in diameter) as templates and filled the void spaces among the particles with a UV-curable liquid prepolymer by capillary action.
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Large-Cage Zeolite Structures with Multidimensional 12-Ring Channels
TL;DR: Zeolite type structures with large cages interconnected by multidimensional 12-ring (rings of 12 tetrahedrally coordinated atoms) channels have been synthesized; more than a dozen large-pore materials were created in three different topologies with aluminum, cobalt, and phosphorus at the tetrahedral coordination sites.