The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Apr. 26, 2006
Won-kook Choi, Seoul, KR;
Yeon-sik Jung, Seoul, KR;
Dong-heon Kang, Gyeonggi-do, KR;
Kyung-ju Lee, Seoul, KR;
Won-Kook Choi, Seoul, KR;
Yeon-Sik Jung, Seoul, KR;
Dong-Heon Kang, Gyeonggi-do, KR;
Kyung-Ju Lee, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention provides for titanium oxide-based photocatalysts having a general formula of TiOCNand self-cleaning materials that are prepared by substituting O of pure TiO2 with C and N. A preparation method comprising a process for forming thin films of TiOCNby using gases such as Ar, N, CO, CO and O are used for reactive sputtering, and a process of heat treating at around 500° C., thereby crystallizing, is provided. The titanium oxide-based photocatalysts having a general formula of TiOCNand self-cleaning materials according to the present invention have a smaller optical bandgap compared to pure titanium oxides, and therefore, the photocatalysts can be activated under the visible light range. In addition, they comprise only pure anatase crystallization phase, and since the crystallized particles are small in size, the efficiency and self-cleaning effect of the photocatalysts are very high.