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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Biomimetism and bioinspiration as tools for the design of innovative materials and systems.
TL;DR: Materials found in nature combine many inspiring properties such as sophistication, miniaturization, hierarchical organizations, hybridation, resistance and adaptability to propose more reliable, efficient and environment-respecting materials requires a multidisciplinary approach.
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Controlling Mineral Morphologies and Structures in Biological and Synthetic Systems
Fiona C. Meldrum,Helmut Cölfen +1 more
TL;DR: A comparison of Silicification in Diatoms and Bioinspired Routes to Controlling Crystal Morphologies shows the importance of knowing the carrier and removal status of the substance before and during silicification.
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Three-dimensional battery architectures.
TL;DR: Lithium ion batteries, in which lithium ions shuttle between an insertion cathode and an insertion anode (e.g., carbon), emerged as the power source of choice for the highperformance rechargeable-battery market.
Journal ArticleDOI
Block Copolymer Templating Syntheses of Mesoporous Metal Oxides with Large Ordering Lengths and Semicrystalline Framework
TL;DR: A simple and general procedure has been developed for the syntheses of ordered largepore (up to 14 nm) mesoporous metal oxides, including TiO2, ZrO2, N b 2O5, T a 2 O5, A l 2O3, SiO2 and SnO2.
Journal ArticleDOI
Morphological Control of Highly Ordered Mesoporous Silica SBA-15
TL;DR: Highly ordered hexagonal mesoporous silica SBA-15 with fiber, rope, donut, sphere, gyroid and discoid-like morphology have been synthesized.
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.