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
Reads0
Chats0
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
More filters
Journal ArticleDOI
CeO2-encapsulated noble metal nanocatalysts: enhanced activity and stability for catalytic application
TL;DR: In this article, a review of the recent achievements and the proposed strategy for addressing the emerging challenges in encapsulated noble metal nanocatalysts is presented, including the types of hybrid nanostructures and successful synthetic strategies.
Journal ArticleDOI
A Composite Surfactant Route for the Synthesis of Thermally Stable and Hierarchically Porous Zirconia with a Nanocrystallized Framework
Journal ArticleDOI
Hierarchically tetramodal-porous zeolite ZSM-5 monoliths with template-free-derived intracrystalline mesopores
Bin Li,Hu Zhijie,Biao Kong,Jinxiu Wang,Wei Li,Zhenkun Sun,Xufang Qian,Yisu Yang,Wei Shen,Hualong Xu,Dongyuan Zhao +10 more
TL;DR: In this article, a hierarchical zeolite ZSM-5 was synthesized using polyurethane foam (PUF) as a rigid scaffold through a simple steam-assisted crystallization (SAC) method.
Journal ArticleDOI
On the correlation between nanoscale structure and magnetic properties in ordered mesoporous cobalt ferrite (CoFe2O4) thin films.
TL;DR: The synthesis of periodic nanoporous cobalt ferrite (CFO) that exhibits tunable room temperature ferrimagnetism is reported, which shows a strong preference for out-of-plane oriented magnetization, which is unique in a thin film system.
Journal ArticleDOI
Growth of Large Crystals of Monodispersed Spherical Colloids in Fluidic Cells Fabricated Using Non-photolithographic Methods
TL;DR: In this article, the authors describe a convenient approach to the fabrication of fluidic cells to be used for crystallizing spherical colloids into 3D periodic lattices over large areas.
References
More filters
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
The Diatoms. Biology and Morphology of the Genera.
Journal ArticleDOI
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.
Journal ArticleDOI
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.