Abstract
Low temperature process below 100℃ under atmospheric pressure is a very useful technique to create inorganic nanocomposite thin films on various kinds of substrates, such as glass, ceramics, metal, alloy, and plastics. Nanocomposite material consisting of photocatalytic ceramic matrix and noble metal nanoparticles were prepared by both sol-gel process followed by hot-water treatment below 100℃ and photodeposition technique at room temperature under UV light irradiation. For example, nanocomposite thin film consisting of titania ceramic matrix and palladium metal nanoparticles works as an optically readable hydrogen gas sensor which can operate at room temperature. I believe that this low temperature synthesis can be applied to prepare functional materials or devices with well-controlled nanostructure.
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