Microstructure Control of Porous Alumina Film Using Aqueous Sol Containing Trehalose

Takeshi Miki; Kaori Nishizawa; Kazuyuki Suzuki; Kazumi Kato

doi:10.4028/www.scientific.net/KEM.350.7

Paper Titles

Morphology Control of ZnO Particles in Liquid Phase
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Microstructure Control of Porous Alumina Film Using Aqueous Sol Containing Trehalose
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Sedimentation of Barium Titanate Nanoparticles in a Suspension under Application of an Electric Field
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Magneto-Optical Effects in Superlattice Assemblies of Ferromagnetic Nanosheets
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Liquid-Phase Synthesis of Carbon Nanotubes from Alcohols
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Synthesis of Highly Aligned Carbon Nanotubes in Liquid Phase
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The Characteristics of Fine-Sized LiMn_(12-X)/6Al_x/6O₄(0.05≤x≤2) Powders Prepared by Spray Pyrolysis
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Crystallinity of Barium Titanate Nanoparticles Synthesized by Sol-Gel Method
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Sintering and Dielectric Properties of BaTiO₃ Nano-Particle Prepared by Aerosol Plasma Pyrolysis Process
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Microstructure Control of Porous Alumina Film Using Aqueous Sol Containing Trehalose

Abstract:

To fabricate porous and thick alumina films, we prepared an aqueous alumina hydroxide sol containing trehalose. The alumina films were deposited by dip-coating technique on glass substrates and heating at 500 °C. The maximum thickness of the film obtained by one-run dip-coating using the sol containing trehalose was over 1000 nm. The film was an aggregate of alumina particles with a diameter of 20-40 nm and pores were interstices between the particles. The porosity of alumina film can be controlled in the range of 48-65 % by changing trehalose concentration in the dip-coating solution.