Multiscale Phase Separations for Hierarchically Ordered Macro/Mesostructured Metal Oxides
- 8 February 2018
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 30 (6)
- https://doi.org/10.1002/adma.201703829
Abstract
Porous architectures play an important role in various applications of inorganic materials. Several attempts to develop mesoporous materials with controlled macrostructures have been reported, but they usually require complicated multiple-step procedures, which limits their versatility and suitability for mass production. Here, a simple approach for controlling the macrostructures of mesoporous materials, without templates for the macropores, is reported. The controlled solvent evaporation induces both macrophase separation via spinodal decomposition and mesophase separation via block copolymer self-assembly, leading to the formation of hierarchically porous metal oxides with periodic macro/mesostructures. In addition, using this method, macrostructures of mesoporous metal oxides are controlled into spheres and mesoporous powders containing isolated macropores. Nanocomputed tomography, focused ion beam milling, and electron microscopy confirm well-defined macrostructures containing mesopores. Among the various porous structures, hierarchically macro/mesoporous metal oxide is employed as an anode material in lithium-ion batteries. The present approach could provide a broad and easily accessible platform for the manufacturing of mesoporous inorganic materials with different macrostructures.Keywords
Funding Information
- National Research Foundation of Korea (NRF-2016R1A4A1010735, NRF-2017R1A2B3004648)
This publication has 51 references indexed in Scilit:
- Spatially orthogonal chemical functionalization of a hierarchical pore network for catalytic cascade reactionsNature Materials, 2015
- Micro- and mesoporous CuBTCs for CO2/CH4 separationKorean Journal of Chemical Engineering, 2015
- Hierarchical porous materials: catalytic applicationsChemical Society Reviews, 2012
- Ordered mesoporous metal oxides: synthesis and applicationsChemical Society Reviews, 2012
- Mesoporous silica nanoparticles for bioadsorption, enzyme immobilisation, and delivery carriersNanoscale, 2011
- Hollow Micro‐/Nanostructures: Synthesis and ApplicationsAdvanced Materials, 2008
- Rational Design of Mesoporous Metals and Related Nanomaterials by a Soft‐Template ApproachChemistry – An Asian Journal, 2008
- Mesoporous Materials for Drug DeliveryAngewandte Chemie-International Edition, 2007
- Sol–Gel with Phase Separation. Hierarchically Porous Materials Optimized for High-Performance Liquid Chromatography SeparationsAccounts of Chemical Research, 2007
- Recent Progress in the Synthesis of Porous Carbon MaterialsAdvanced Materials, 2006