Fabrication and properties of non-isolating γ-alumina meso-foam
Source abstract
Abstract
Films of submicrometric hollow capsules of a metal oxide material have attracted great attention in the field of the inorganic meso-foams. In particular the possibility of changing the characteristics of the bulk metal oxides by tuning the morphology of the inorganic materials at a submicrometric scale has been considered appealing for several applications in optics, catalysis, sensors and magnetism. Here we present a sustainable method for generation of monodisperse meso-foam of gamma-alumina made of aggregates of monodisperse capsules fabricated from aqueous solution and in ambient conditions. The electrical characteristics of the alumina meso-foams are reported and we demonstrate that films obtained by the proposed method show conductivity significantly higher than that found in similar titania systems. These experimental results endorse this new meso-foam as a new "engineered ceramic", suitable for microelectronics and sensor applications. (C) 2016 Elsevier B.V. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer Surface Interaction Studies · Anodic Oxide Films and Nanostructures · Nanoporous metals and alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Hollow-structured mesoporous materials: chemical synthesis, functionalization and applications10.1002/adma.201305319 ↗
2. Elaborate design strategies toward novel microcarriers for controlled encapsulation and release10.1002/ppsc.201200044 ↗
3. Synthesis and utilization of monodisperse hollow polymeric particles in photonic crystals10.1021/ja049453k ↗
4. Assembly of nanoparticles into hollow spheres using block copolypeptides D10.1021/nl020244c ↗
5. A lost-wax approach to monodisperse colloids and their crystals10.1126/science.291.5503.453 ↗
6. A general method to coat colloidal particles with silica10.1021/la0347859 ↗
7. Hybrid latex particles coated with silica E10.1021/ma010278r ↗
8. Synthesis and characterization of monodisperse core-shell colloidal spheres of zinc sulfide and silica10.1021/la0101548 ↗
9. Synthesis and characterization of mesoscopic hollow spheres of ceramic materials with functionalized interior surfaces10.1021/cm000933u ↗
10. Nanoengineering of particle surfaces10.1002/1521-4095(200101)13:1<11::AID-ADMA11>3.0.CO;2-N ↗
11. Nanoengineering of inorganic and hybrid hollow spheres by colloidal templating10.1126/science.282.5391.1111 ↗
12. Production of hollow microspheres from nanostructured composite particles10.1021/cm991083p ↗
13. Multilayer assemblies of silica-encapsulated gold nanoparticles on decomposable colloid templates10.1002/1521-4095(200107)13:14<1090::AID-ADMA1090>3.0.CO;2-H ↗
14. Core–shell structures formed by the solvent-controlled precipitation of luminescent CdTe nanocrystals on latex spheres10.1002/1521-4095(200111)13:22<1684::AID-ADMA1684>3.0.CO;2-Z ↗
15. Magnetically directed self-assembly of submicron spheres with a Fe3O4 nanoparticle shell10.1016/S0304-8853(01)00724-7 ↗
16. Smart micro- and nanocontainers for storage, transport and release10.1002/1521-4095(200109)13:17<1324::AID-ADMA1324>3.0.CO;2-L ↗
17. Transition alumina phases induced by heat treatment of boehmite: An X-ray diffraction and infrared spectroscopy study10.1016/j.jssc.2009.02.006 ↗
18. Direct C-C cross-coupling of secondary and primary alcohols catalyzed by a γ-alumina-supported silver subnanocluster10.1002/anie.200901057 ↗
19. Facile synthesis of ordered mesoporous alumina and alumina-supported metal oxides with tailored adsorption and framework properties10.1021/cm102512v ↗
20. Study of electrical discharge grinding using metal matrix composite electrodes10.1016/S0890-6955(03)00048-8 ↗
21. Fabrication of semi-conductive ceramics by combination of gel casting and reduction sintering10.1007/s10853-006-4496-4 ↗
22. Optical properties of sol–gel deposited Al2O3 films10.1016/S0927-0248(99)00054-9 ↗
23. A simple geometrical model for emulsifier free polymer colloid formation10.1016/j.jcis.2004.02.059 ↗
24. Template evaporation method for controlling anatase nanocrystal size in ordered macroporous TiO210.1016/j.jcis.2005.04.033 ↗
25. Rooksby · 1951 · 264
26. Structural, optical and mechanical properties of amorphous and crystalline alumina thin films10.1016/j.tsf.2014.07.053 ↗
27. Dielectric behavior of alumina thin film under high DC electric field prepared by sol–gel method10.1142/S2010135X13500173 ↗
28. Electrical conductivity mechanisms in titania hollow microspheres with dominant {001} facets10.1016/j.jallcom.2013.10.031 ↗
29. Nanocrystalline anatase TiO2 thin films: preparation and crystallite size-dependent properties10.1016/j.tsf.2004.06.120 ↗