2022 Fiscal Year Research-status Report
水中ラジカル反応を利用した新たな手法による光機能性金属酸化物ナノ構造の作製
| Project/Area Number |
21K04823
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| Research Institution | Hokkaido University |
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Principal Investigator |
張 麗華 北海道大学, 工学研究院, 准教授 (60719714)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | metal oxide / submerged photosynthesis / hydrogen peroxide / radical reactions / nano structure / electrochemistry |
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| Outline of Annual Research Achievements |
We developed a submerged radical reactions method for the fabrication of metal nano oxides for photo functional applications. The
radical reactions were mainly generated by light illumination, ultrasound, and reactive oxygen species (ROS). In this year's work, we mainly focused on the nanostructure fabrication on copper and copper alloys surface by using the ROS of H2O2-HClO mixture solutions.
The XRD and SEM results show that a homogeneous nanostructure surface can be obtained under both UV and visible light illumination when the volume ratio of HClO to H2O2 is 2:1.
The Raman spectroscopy analysis proved that CuO, Cu2O and Cu2Cl(OH)3 are formed on the metal surface.
The cyclic voltammetry measurement shows that the sample with visible illumination has the highest specific capacitance.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
(1) The effect of light and ROS solution on the morphologies of the fabricated surface was studied.
(2) Reaction mechanism was analyzed.
(3) Electrochemical experiments were conducted successfully.
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| Strategy for Future Research Activity |
(1) Apply this method for the fabrication of W and Mo metal oxides.
(2) Analysis the reaction mechanism of the W and Mo metal oxides formation.
(3) Electrochemical experiments on the fabricated W and Mo metal oxides
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