PROBLEM TO BE SOLVED: To provide: a method of manufacturing an interior material that can be manufactured for a short time and by low cost, and that is provided with a photocatalyst function that is stable for a long period of time and the interior material.SOLUTION: A method of manufacturing an interior material 10 that is provided with a photocatalyst function includes: a slurry formation process in which a photocatalyst particle 11, and a water-soluble metal complex body that makes the photocatalyst particle 11 exert visible light responsiveness, and at least one compound chosen from a water-soluble metal salt, are mixed with water to form a slurry a spraying process in which the slurry is supplied in a spraying frame and a spraying layer 13a including the photocatalyst particles 11 is formed on a surface of an interior substrate 12 of a building and a sealing treatment process in which a light-transmitting material is applied to a surface of the spraying layer 13, the light-transmitting material is filled in a gap between the photocatalyst particles 11 while keeping an exposure state of the existing photocatalyst particle 11 on a surface layer of the spraying layer 13 to form a protective layer 14.COPYRIGHT: (C)2014,JPO&INPIT【課題】短時間かつ低コストで安定して製造でき、長期間安定した光触媒機能を備えた内装材の製造方法及びその内装材を提供する。【解決手段】光触媒機能を備えた内装材10の製造方法は、光触媒粒子11と、光触媒粒子11に可視光応答性を発揮させる水溶性金属錯体及び水溶性金属塩から選ばれる少なくとも1種類の化合物とを、水に混合してスラリーを形成するスラリー形成工程と、スラリーを溶射フレーム中に供給し、建物の内装基材12の表面に光触媒粒子11を含む溶射層13を形成する溶射工程と、溶射層13の表面に透光性材料を塗布し、溶射層13の表層に存在する光触媒粒子11の露出状態を維持しながら、光触媒粒子11同士の隙間に透光性材料を充填して保護層14を形成する封孔処理工程とを有する。【選択図】図1
