Rare-earth oxide or sulfide of NANO size and process for producing the same through photochemical reaction

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	Rare-earth oxide or sulfide of NANO size and process for producing the same through photochemical reaction
其他题名	Rare-earth oxide or sulfide of NANO size and process for producing the same through photochemical reaction
	YANAGIDA, SHOZO; WADA, YUJI; HASEGAWA, YASUCHIKA
	2005-04-06
专利权人	JAPAN SCIENCE AND TECHNOLOGY AGENCY
公开日期	2005-04-06
授权国家	欧洲专利局
专利类型	发明申请
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.
其他摘要	一种结晶稀土氧化物或硫化物，其平均粒径为10nm或更小，并且其中稀土元素具有低价，特别是纳米尺寸的结晶EuO或EuS。稀土氧化物或硫化物是通过在以下化合物的存在下用紫外到可见光的光照射具有高价的稀土元素的无机酸盐或有机酸盐来制备的：在用UV光到可见光范围内的光照射时，诱导光氧化还原反应，同时将具有高价的稀土离子转化为具有低价的离子;和胆碱源化合物，其立即与低价离子反应形成胆激素化合物。
主权项	A crystalline and low valent rare-earth oxide or sulfide whose average particle size is smaller than 10nm.
申请日期	2001-06-08
专利号	EP1298091A4
专利状态	失效
申请号	EP2001938560
公开（公告）号	EP1298091A4
IPC 分类号	C01F17/00 \| C09K11/08 \| C09K11/78 \| C09K11/84 \| G11B11/105 \| H01F1/00 \| H01S5/10 \| H01S5/34
专利代理人	-
代理机构	CRESSWELL, THOMAS ANTHONY
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/60668
专题	半导体激光器专利数据库
作者单位	JAPAN SCIENCE AND TECHNOLOGY AGENCY
推荐引用方式 GB/T 7714	YANAGIDA, SHOZO,WADA, YUJI,HASEGAWA, YASUCHIKA. Rare-earth oxide or sulfide of NANO size and process for producing the same through photochemical reaction. EP1298091A4[P]. 2005-04-06.

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