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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Journal ArticleDOI
Hierarchical Porosity in Silica Thin Films by a One-Step Templating Strategy Using a Stimuli-Responsive Bioderived Glycolipid
TL;DR: The pH-dependent templating effect is reported using a class of entirely bioderived, functional glycolipids obtained from the culture broth of the yeast Starmerella bombicola, showing that these compounds can be used to achieve a micro-to-macro hierarchical porosity in a one-step process by simply tuning the solution pH and without using any additional cosurfactant, cosolvent, or pore-swelling agent.
Journal ArticleDOI
Towards mesoporous Keggin-type polyoxometalates – systematic study on organic template removal
Thomas Lunkenbein,Marleen Kamperman,Martin Schieder,Zihui Li,Hiroaki Sai,Stephan Förster,Ulrich Wiesner,Josef Breu +7 more
TL;DR: In this article, the removal of the polymer template from inverse hexagonally ordered poly(butadiene-block-2-dimethylaminoethyl methacrylate) -phosphomolybdic acid (H3PMo12O40) nanocomposites was studied.
Journal ArticleDOI
High-sensitive sensor of dopamine based on photoluminescence quenching of hierarchical CdS spherical aggregates
Binjie Sun,Changzheng Wang +1 more
TL;DR: In this article, the hierarchical CdS spherical aggregates are of high porosity and high surface area, which give rise to unique photoluminescence properties, and the desirable properties will spur further developments of novel dopamine photolUMinescence sensors.
Book ChapterDOI
Nanozeolites and Nanoporous Zeolitic Composites: Synthesis and Applications
Gia-Thanh Vuong,Trong-On Do +1 more
Journal ArticleDOI
Fabrication of hierarchically porous silica nanospheres through sol-gel process and pseudomorphic transformation
TL;DR: In this article, a multistep sol-gel method combined with pseudomorphic transformation in the presence of polyvinylpyrrolidone (PVP) and cetyltrimethylammoium bromide (CTAB) as dual template was used to synthesize hierarchical porous silica nanospheres.
References
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Journal ArticleDOI
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Dongyuan Zhao,Jianglin Feng,Qisheng Huo,Nicholas A. Melosh,Glenn H. Fredrickson,Bradley F. Chmelka,Galen D. Stucky +6 more
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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.