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
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Polymer-inorganic particle composites
Nobuyuki Kambe,Yigal Dov Blum,Benjamin Chaloner-Gill,Shivkumar Chiruvolu,Sujeet Kumar,David Brent Macqueen +5 more
TL;DR: In this paper, chemical bonding between the elements of the composite is described, and the composite composition can include chemically bonded inorganic particles and ordered polymers, and various electrical, optical and electro-optical devices can be formed from the composites.
Journal ArticleDOI
Hierarchical Pore Structures through Diatom Zeolitization
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Versatile Double-Templating Synthesis Route to Silica Monoliths Exhibiting a Multimodal Hierarchical Porosity
TL;DR: In this paper, the mechanism of formation of the complex framework architectures and the application potential of the material were discussed, where poly(ethylene glycol) has been used together with alkylammonium surfactants to control the particle aggregation and internal structure.
Journal ArticleDOI
Microwave assisted template removal of siliceous porous materials
TL;DR: In this article, organic templates of meso- and macro-porous siliceous materials can be completely removed within minutes by microwave digestion, resulting in highly ordered inorganic frameworks with higher surface areas, larger pore volumes, lower structural shrinkage and richer silanol groups compared with those from conventional template removal methods.
Journal ArticleDOI
Facile synthesis and unique physicochemical properties of three-dimensionally ordered macroporous magnesium oxide, gamma-alumina, and ceria-zirconia solid solutions with crystalline mesoporous walls.
TL;DR: The unique physicochemical properties associated with the copresence of 3DOM and mesoporous walls make these porous materials ideal candidates for applications in heterogeneous catalysis and CO(2) adsorption.
References
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Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism
TL;DR: In this paper, the synthesis of mesoporous inorganic solids from calcination of aluminosilicate gels in the presence of surfactants is described, in which the silicate material forms inorganic walls between ordered surfactant micelles.
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Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores
Dongyuan Zhao,Jianglin Feng,Qisheng Huo,Nicholas A. Melosh,Glenn H. Fredrickson,Bradley F. Chmelka,Galen D. Stucky +6 more
TL;DR: Use of amphiphilic triblock copolymers to direct the organization of polymerizing silica species has resulted in the preparation of well-ordered hexagonal mesoporous silica structures (SBA-15) with uniform pore sizes up to approximately 300 angstroms.
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The Diatoms. Biology and Morphology of the Genera.
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Generalized syntheses of large-pore mesoporous metal oxides with semicrystalline frameworks
TL;DR: In this article, a simple and versatile procedure for the synthesis of thermally stable, ordered, large-pore (up to 140 A) mesoporous metal oxides was described.
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Synthesis of Macroporous Minerals with Highly Ordered Three-Dimensional Arrays of Spheroidal Voids
TL;DR: The examples presented demonstrate the compositional diversity possible with this technique and could have applications in areas ranging from quantum electronics to photocatalysis to battery materials.