| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
We found a new oxidation mode of alloy nanoparticles (NPs) composed of a base metal and a noble metal has been induced when they were heated in gas phase and suddenly exposed to the hot oxygen gas. The rapid oxidation processes of Ni-base and Al-base noble metal alloy NPs enabled to produce noble metal-NiO matchstick-like hybrid NPs and noble metal-alumina worm-like hybrid NPs, both of which were structured via an anisotropic growth of oxide from the surfaces of the alloy NPs. Thanks to the present morphology controllable method, we prepared films constituted of NiO NPs or NiO-noble metal hybrid NPs with different morphologies, so as to bridge a gap between two electrodes on a glass plate. Their hydrogen gas sensing properties were measured to reveal effects on the morphologies of oxide NPs and the noble metal additions to them.
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