公开(公告)号：EP2000208A2

公开(公告)日：2008-12-10

申请号：EP07739329.6

申请日：2007-03-22

Applicant: OSAKA Titanium Technologies Co., Ltd.

Inventor： MASAKI, Yasuhiro ,  NISHIHARA, Katsuhiro ,  FUKUDA, Tadashi ,  OKADA, Katsumi ,  TASAKA, Masahito ,  SHIMOSAKI, Shinji ,  KANNO, Hideaki ,  NAGAOKA, Sadanobu ,  AZUMA, Kazuomi ,  OGASAWARA, Tadashi

IPC: B01J35/02

CPC classification number: C01G23/053 ,  B01D53/885 ,  B01D2255/20707 ,  B01D2255/802 ,  B01D2257/206 ,  B01D2257/30 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2257/70 ,  B01D2257/91 ,  B01D2259/802 ,  B01J21/063 ,  B01J35/002 ,  B01J35/004 ,  B01J37/0209 ,  B01J37/0219 ,  B01J37/0225 ,  B01J37/0244 ,  B01J37/03 ,  B01J37/031 ,  B01J37/10 ,  C01P2002/54 ,  C01P2002/84 ,  C01P2002/85 ,  Y02P20/154 ,  Y10T428/31678

Abstract: A titanium oxide photocatalyst responsive to visible light which can exhibit a high photocatalytic activity in response to visible light is produced by subjecting titanium oxide and/or titanium hydroxide obtained by neutralizing an acidic titanium compound with a nitrogen-containing base to heat treatment in an atmosphere containing a hydrolyzable metal compound (e.g., a titanium halide) and then to additional heat treatment in a gas having a moisture content of 0.5 - 4.0 volume % at a temperature of 350° C or above. The photocatalyst which is a nitrogen-containing titanium oxide has no9 substantial peak at a temperature of 600° C or above in a mass fragment spectrum obtained by thermal desorption spectroscopy in which the ratio m/e of the mass number m to the electric charged e of ions is 28, and the peak having the smallest half band width is in the range of 400 - 600° C in the spectrum. The nitrogen content calculated from the peak appearing at 400 eV ∀ 1.0 eV in the N1s shell bonding energy spectrum obtained by XPS measurement of this photocatalyst is at least 20 times larger than the nitrogen content obtained by chemical analysis.

Abstract translation: 可见光响应型氧化钛光催化剂可以在响应于可见光表现出高的光催化活性是通过使通过中和酸性钛化合物的气氛中的含氮碱的热处理在所得的二氧化钛和/或氢氧化钛制备 含有具有0.5的水分含量的气体中的水解性金属化合物（例如，卤化钛）中，然后以附加热处理 - 在350℃或以上的温度下4.0体积％。 的光催化剂的所有其是含有氮的二氧化钛在用升温脱附法，其中所述比m /的质量数米到电动È带电Ë获得的600℃或以上的质量碎片波谱的温度下具有NO9实质的峰 离子是28，并且具有最小带宽的一半的峰值是在光谱400至600℃的范围内。 从峰值在400电子伏特€为1.0eV在N 1S亮相的计算值中的氮含量壳通过该光催化剂的XPS测定得到结合能量光谱图比由化学分析得到的氮含量大至少20倍。

公开(公告)号：EP2000208A9

公开(公告)日：2009-03-25

申请号：EP07739329.6

申请日：2007-03-22

Applicant: OSAKA Titanium Technologies Co., Ltd.

Inventor： MASAKI, Yasuhiro ,  NISHIHARA, Katsuhiro ,  FUKUDA, Tadashi ,  OKADA, Katsumi ,  TASAKA, Masahito ,  SHIMOSAKI, Shinji ,  KANNO, Hideaki ,  NAGAOKA, Sadanobu ,  AZUMA, Kazuomi ,  OGASAWARA, Tadashi

IPC: B01J35/02

CPC classification number: C01G23/053 ,  B01D53/885 ,  B01D2255/20707 ,  B01D2255/802 ,  B01D2257/206 ,  B01D2257/30 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2257/70 ,  B01D2257/91 ,  B01D2259/802 ,  B01J21/063 ,  B01J35/002 ,  B01J35/004 ,  B01J37/0209 ,  B01J37/0219 ,  B01J37/0225 ,  B01J37/0244 ,  B01J37/03 ,  B01J37/031 ,  B01J37/10 ,  C01P2002/54 ,  C01P2002/84 ,  C01P2002/85 ,  Y02P20/154 ,  Y10T428/31678

Abstract: A titanium oxide photocatalyst responsive to visible light which can exhibit a high photocatalytic activity in response to visible light is produced by subjecting titanium oxide and/or titanium hydroxide obtained by neutralizing an acidic titanium compound with a nitrogen-containing base to heat treatment in an atmosphere containing a hydrolyzable metal compound (e.g., a titanium halide) and then to additional heat treatment in a gas having a moisture content of 0.5 - 4.0 volume % at a temperature of 350° C or above. The photocatalyst which is a nitrogen-containing titanium oxide has no9 substantial peak at a temperature of 600° C or above in a mass fragment spectrum obtained by thermal desorption spectroscopy in which the ratio m/e of the mass number m to the electric charged e of ions is 28, and the peak having the smallest half band width is in the range of 400 - 600° C in the spectrum. The nitrogen content calculated from the peak appearing at 400 eV ∀ 1.0 eV in the N1s shell bonding energy spectrum obtained by XPS measurement of this photocatalyst is at least 20 times larger than the nitrogen content obtained by chemical analysis.