METATITANIC ACID PARTICLES AND METHOD FOR PRODUCING THE SAME, COMPOSITION FOR FORMING PHOTOCATALYST, PHOTOCATALYST AND STRUCTURE

• Main Authors: YOSHIKAWA HIDEAKI, TAKEUCHI SAKAE, KAJIMA YASUNOBU, IWANAGA TAKESHI, OKUNO HIROYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2018
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DYES; INORGANIC CHEMISTRY; LAKES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide metatitanic acid particles which exhibit a high photocatalytic function even in a visible light region.SOLUTION: There are provided metatitanic acid particles which are surface-treated with a metal-containing compound having a hydrocarbon group and have absorption at a wavelength of 450 nm and 750 nm, wherein the element ratio M/Ti between the metal M of the metal-containing compound and the titanium on the surface is 0.1 or more and 0.4 or less and the element ratio C/Ti between the carbon C and the titanium is 0.3 or more and 1.2 or less.SELECTED DRAWING: None 【課題】可視光領域においても高い光触媒機能を発現するメタチタン酸粒子の提供。【解決手段】炭化水素基を有する金属含有化合物により表面処理され、可視吸収スペクトルにおいて波長４５０ｎｍ及び７５０ｎｍに吸収を持ち、表面における前記金属含有化合物の金属Ｍとチタンとの元素比Ｍ／Ｔｉが０．１以上０．４以下であり、かつ炭素Ｃとチタンとの元素比Ｃ／Ｔｉが０．３以上１．２以下であるメタチタン酸粒子である。【選択図】なし