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1. 发明申请

US20110259244A1 Nanoparticulate Titanium Dioxide Particles with a Crystalline Core, a Metal-Oxide Shell and an Outer Skin Containing Organic Groups, and Method for the Manufacture Thereof 审中-公开
标题翻译：具有晶核，金属氧化物壳和含有有机基团的外皮的纳米颗粒二氧化钛颗粒及其制造方法
公开(公告)号：US20110259244A1
公开(公告)日：2011-10-27
申请号：US13141523
申请日：2009-12-18
申请人： Bettina Herbig , Gerhard Schottner
发明人： Bettina Herbig , Gerhard Schottner
IPC分类号： C04B14/30 , B05D7/24 , B82Y99/00
CPC分类号： C01G23/053 , B82Y30/00 , C01P2002/86 , C01P2004/64 , C09C1/3661 , C09C1/3684 , C09C1/3692
摘要： This invention refers to particles with a crystalline core of titanium dioxide that has an average diameter of ≦30 nm measured with the XRD/Scherrer method, a shell made of a metal oxide that has no photocatalytic properties and an outer skin that carries organic radicals. A suspension of these particles is conveniently prepared with a process that encompasses the following steps: The supply of a dispersion that has crystalline titanium dioxide particles having an average diameter of ≦30 nm whose surface has been modified with organic groups in solution that contains a dissolved, hydrolytically condensable compound of a metal M whose oxide should form the shell mentioned above, in which case an organic solvent or a mixture of an organic solvent and water is used as solvent, and adjusting the pH of the solution in such a way that a full deagglomeration of the nanoparticles occurs, the stirring of the dispersion in the presence of a sufficient quantity of water for the hydrolytic condensation of the dissolved, hydrolytically condensable compound of the metal M until the organic constituents with which the modified TiO2 particles were coated are displaced, and an oxidic shell of the metal M has formed, and after preferably at least some of the solvent/water from the product obtained has been removed and a surface-modifying component of the oxidic shell and the causing of the formation of an outer skin that has organic groups with the help of this component on the particles has been added.
摘要翻译：本发明是指用XRD / Scherrer法测定的具有平均直径为nlE的30nm的二氧化钛晶粒，由不具有光催化性质的金属氧化物制成的外壳和携带有机基团的外皮。这些颗粒的悬浮液通过包括以下步骤的方法方便地制备：提供具有平均直径为＆nlE的结晶二氧化钛颗粒的分散体; 30nm，其表面已经用溶液中的有机基团修饰，其含有溶解的可水解缩合的金属M的化合物，其氧化物应形成上述壳，在这种情况下使用有机溶剂或有机溶剂和水的混合物作为溶剂，并调节溶液的pH，使得发生纳米颗粒的完全解聚，在存在足够量的水的情况下搅拌分散体用于金属M的溶解的可水解缩合的化合物的水解缩合，直到涂覆有改性TiO 2颗粒的有机组分为已经形成了金属M的氧化壳，并且优选地至少有一些溶剂/ w 已经除去了所得产物，并且添加了氧化壳的表面改性组分，并且在该颗粒的帮助下引起了具有有机基团的外皮的形成。

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