公开(公告)号：EP1205245A1

公开(公告)日：2002-05-15

申请号：EP00951885.3

申请日：2000-08-04

申请人： Kabushiki Kaisha Toyota Chuo Kenkyusho

发明人： MORIKAWA, Takeshi, K. K. Toyota Chuo Kenkyusho ,  ASAHI, Ryoji, K. K. Toyota Chuo Kenkyusho ,  OHWAKI, Takeshi, K. K. Toyota Chuo Kenkyusho ,  TAGA, Yasunori, K. K. Toyota Chuo Kenkyusho

IPC分类号： B01J35/02

CPC分类号： B01J21/063 ,  B01J27/24 ,  B01J35/002 ,  B01J35/004 ,  B01J37/0238 ,  B01J37/34 ,  B01J37/341 ,  B01J37/346 ,  B01J37/349 ,  C01G23/04 ,  C01P2002/54 ,  C01P2002/77 ,  C01P2004/84

摘要： A photocatalytic material having titanium oxide crystals and anions X incorporated therein, which is prepared by at least one of a method comprising substituting anions X for some of the oxygen sites of titanium oxide crystals, a method comprising doping anions X between lattices of a titanium crystal and a method comprising doping grain boundaries of titanium oxide, or a combination of these method. The photocatalytic material has acquired a new energy level formed in a band gap of titanium oxide, which results in its exhibition of a photocatalytic activity by absorbing visible lights. The photocatalytic material can thus exhibit a satisfactory photocatalytic activity under sunlight and also in a room with a fluorescent lamp.