2013 Fiscal Year Final Research Report
Synthesis and Materials Design of New Transient Metal Peroxide and Superoxide based on Physical Transport Process in liquid Ammonia
| Project/Area Number |
22656143
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 遷移金属 / 過酸化物 / 表面状態 / 光励起 / 揮発性有機物 / センサー / Birch還元 / 酸素プラズマ |
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| Research Abstract |
I had proposed new methods for synthesizing novel molecular crystals: transient metal (TM) peroxide/superoxide, which had never found in the crust of Earth. I am interested in novel electric functions based on spin-orbital interactions of 4d or 5d TM and first I tried to synthesize both bulk and thin films by the reaction between (1) reduced oxygen molecules (O-O-) and 4d/5d TM and (2) oxygen plasma (O-O+) and 4d/5d TM, however, no novel materials were obtained. I discussed in parallel on the introduction of peroxide anions over the TM surface by the deep-UV light irradiation and this process would partially succeeded. A TM oxide heterojunction device were manufactured and its novel functions, photo-induced charge transfer between aromatic VOC (Volatile Organic Compound) adsorbate and peroxide anions. Novel gas sensing properties were found out in the system NiO-ZnO, which will be applicable for high-performance VOC sensors.
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