| 研究実績の概要 |
In this work, we developed a submerged radical reactions method for the fabrication of metal nano oxides for photo functional applications. The radical reactions were generated by light illumination (UV, and visible light), ultrasound, and reactive oxygen species, and this method was applied for copper, tungsten, and molybdenum oxides nanoparticles fabrication. The solution of H2O2, HClO, and H2O2-HClO mixture were used as reaction oxygen species.
The fabricated oxides were analyzed by XRD, SEM-EDS, TEM, and XPS. The specific surface area of the obtained particles was evaluated by BET analysis. Both H2O2 and H2O2-HClO mixture solution under UV illumination could successfully generate molybdenum oxides and tungsten oxides. The H2O2 solution concentration could affect the crystal structures and the morphologies of the products. For copper oxide, HClO solution could fabricate nanorod bundles oxides. The effect of light and temperature during the process was also analyzed. In addition, the reaction mechanism was considered thermodynamically.
The special morphologies of the fabricated oxides indicate the potential photo functional applications, which will be evaluated by electrochemical experiments.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
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理由
The reactive oxygen species (ROS) of H2O2 and HClO were successfully applied for the fabrication of Cu, Mo, W oxides.
For tungsten and molybdenum oxides, H2O2 and UV illumination could affect the crystal structures and morphologies greatly.
For copper oxides, the ratio of H2O2 and HClO, the wavelength of the light (UV, visible light) also show great effect on the product morphologies.
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