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5. WO2012026194 - METAL OXIDE NANOPARTICLE STRUCTURE AND PRODUCTION METHOD FOR SAME

Publication Number WO/2012/026194
Publication Date 01.03.2012
International Application No. PCT/JP2011/064173
International Filing Date 21.06.2011
Chapter 2 Demand Filed 20.04.2012
IPC
C01B 13/36 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
13Oxygen; Ozone; Oxides or hydroxides in general
14Methods for preparing oxides or hydroxides in general
36by precipitation reactions in solutions
C01F 17/00 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
17Compounds of rare earth metals
C01G 3/02 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
3Compounds of copper
02Oxides; Hydroxides
C01G 9/02 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
9Compounds of zinc
02Oxides; Hydroxides
C01G 23/053 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
23Compounds of titanium
04Oxides; Hydroxides
047Titanium dioxide
053Producing by wet processes, e.g. hydrolysing titanium salts
C01G 49/08 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
49Compounds of iron
02Oxides; Hydroxides
08Ferroso-ferric oxide
CPC
B01J 21/063
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
21Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
063Titanium; Oxides or hydroxides thereof
B01J 2235/00
B01J 2235/15
B01J 2235/30
B01J 23/06
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
06of zinc, cadmium or mercury
B01J 23/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
10of rare earths
Applicants
  • 国立大学法人 徳島大学 THE UNIVERSITY OF TOKUSHIMA [JP]/[JP](AllExceptUS)
  • 林 幸壱朗 HAYASHI Koichiro [JP]/[JP](UsOnly)
Inventors
  • 林 幸壱朗 HAYASHI Koichiro
Agents
  • 石井 久夫 ISHII Hisao
Priority Data
2010-18796725.08.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (ja)
Designated States
Title
(EN) METAL OXIDE NANOPARTICLE STRUCTURE AND PRODUCTION METHOD FOR SAME
(FR) STRUCTURE DE NANOPARTICULES EN OXYDE MÉTALLIQUE ET LEUR PROCÉDÉ DE PRODUCTION
(JA) 金属酸化物ナノ粒子構造体およびその製造方法
Abstract
(EN) [Problem] To provide a two-dimensional or three-dimensional metal oxide structure using biomimetic processing. [Solution] A jack bean urease (JBU) derived from jack beans is used as a urease and, by the template effect thereof, urea is degraded and a two-dimensional or three-dimensional structure comprising metal oxide nanoparticles is manufactured. By means of this invention, the metal oxide is formed in a sheet and exhibits superparamagnetism, and a flower-like hierarchical structure exhibits a desirable strong magnetism and usefulness as an MRI contrast media. A titanium oxide forms a rutile-type titanium oxide that exhibits high photocatalytic activity at a low temperature of 37°C.
(FR) [Problème] Obtenir une structure d'oxyde métallique bi- ou tridimensionnelle par un traitement biomimétique. [Solution] Une uréase de haricot jacquier (JBU) dérivée de haricots jacquiers est utilisée à titre d'uréase et, par son effet de matrice, l'urée est dégradée et une structure bi- ou tridimensionnelle comprenant des nanoparticules d'oxyde métallique est obtenue. Grâce à cette invention, l'oxyde métallique est formé sous la forme d'une feuille et manifeste un supraparamagnétisme, et une structure hiérarchique en forme de fleur manifeste le fort magnétisme recherché et s'avère utile en tant que milieu de contraste en IRM. Un oxyde de titane forme un oxyde de titane de type rutile qui manifeste une activité photocatalytique élevée à une basse température de 37°C.
(JA) 【課題】 生体模倣プロセスを用いて金属酸化物の二次元または三次元構造体を提供すること。 【解決手段】 本発明は、ウレアーゼとしてジャックビーンズ由来のタチナタマメウレアーゼ(JBU)を用い、そのテンプレート効果により、尿素を分解させ、金属酸化物のナノ粒子からなる二次元または三次元構造物を製造する。本発明によれば、鉄系酸化物はシート状に形成されて超常磁性を示し、花型階層構造体は好ましい強磁性を示し、MRI造影剤として有用性を示す。チタン系酸化物は37℃という低温で、高い光触媒活性を示すルチル型チタン酸化物が形成される。
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