发明名称 |
Rare-earth oxide or sulfide of nano size and process for producing the same through photochemical reaction |
摘要 |
A crystalline rare-earth oxide or sulfide which has an average particle diameter of 10 nm or less and in which the rare-earth element has a low valance, in particular, crystalline EuO or EuS of nano size. The rare-earth oxide or sulfide is produced by irradiating an inorganic acid salt or organic acid salt of a rare-earth element having a high valence with a light in the range of from UV to visible light in the presence of: a compound which, upon irradiation with the light in the range of from UV to visible light induces a photooxidation-reduction reaction and simultaneously converts the rare-earth ions having a high valence into ions having a low valence; and a cholagen source compound which immediately reacts with the low valence ions to form a cholagen compound.
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申请公布号 |
US7122163(B2) |
申请公布日期 |
2006.10.17 |
申请号 |
US20030297724 |
申请日期 |
2003.04.11 |
申请人 |
JAPAN SCIENCE AND TECHNOLOGY AGENCY |
发明人 |
YANAGIDA SHOZO;WADA YUJI;HASEGAWA YASUCHIKA |
分类号 |
C01F17/00;C09K11/08;C09K11/78;C09K11/84;G11B11/105;H01F1/00;H01S5/10;H01S5/34 |
主分类号 |
C01F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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