Hierarchical nanofabrication of microporous crystals with ordered mesoporosity
Top Cited Papers
- 26 October 2008
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Materials
- Vol. 7 (12), 984-991
- https://doi.org/10.1038/nmat2302
Abstract
Shaped zeolite nanocrystals and larger zeolite particles with three-dimensionally ordered mesoporous (3DOm) features hold exciting technological implications for manufacturing thin, oriented molecular sieve films and realizing new selective, molecularly accessible and robust catalysts. A recognized means for controlled synthesis of such nanoparticulate and imprinted materials revolves around templating approaches, yet identification of an appropriately versatile template has remained elusive. Because of their highly interconnected pore space, ordered mesoporous carbon replicas serve as conceptually attractive materials for carrying out confined synthesis of zeolite crystals. Here, we demonstrate how a wide range of crystal morphologies can be realized through such confined growth within 3DOm carbon, synthesized by replication of colloidal crystals composed of size-tunable (about 10–40 nm) silica nanoparticles. Confined crystal growth within these templates leads to size-tunable, uniformly shaped silicalite-1 nanocrystals as well as 3DOm-imprinted single-crystal zeolite particles. In addition, novel crystal morphologies, consisting of faceted crystal outgrowths from primary crystalline particles have been discovered, providing new insight into constricted crystal growth mechanisms underlying confined synthesis.Keywords
This publication has 47 references indexed in Scilit:
- Towards Realization of a Micro- and Mesoporous Composite Silicate CatalystCatalysis Surveys from Asia, 2008
- Facile synthesis of ZSM-5 composites with hierarchical porosityJournal of Materials Chemistry, 2007
- Hierarchical Nanomanufacturing: From Shaped Zeolite Nanoparticles to High‐Performance Separation MembranesAngewandte Chemie-International Edition, 2007
- Formation of ZMM-n: The composite materials having both natures of zeolites and mesoporous silica materialsMicroporous and Mesoporous Materials, 2007
- Organization of Zeolite Microcrystals for Production of Functional MaterialsAccounts of Chemical Research, 2006
- Anionic Microemulsion-Mediated Low Temperature Synthesis of Anisotropic Silicalite-1 NanocrystalsLangmuir, 2005
- Optimal Aluminum-Assisted Mesoporosity Development in MFI Zeolites by DesilicationThe Journal of Physical Chemistry B, 2004
- Microstructural Optimization of a Zeolite Membrane for Organic Vapor SeparationScience, 2003
- Zeolites by confined space synthesis – characterization of the acid sites in nanosized ZSM-5 by ammonia desorption and 27Al/29Si-MAS NMR spectroscopyMicroporous and Mesoporous Materials, 2000
- A new method for the evaluation of small-angle scattering dataJournal of Applied Crystallography, 1977