Titanium hydroxide, photocatalyst, and coating agent

摘要

A titanium hydroxide is provided which can be utilized for producing a photocatalyst exhibiting a superior photocatalytic activity by irradiation of visible light. The titanium hydroxide has a primary differential spectrum (of radial structure function in connection with titanium K absorption edge) having maximal intensities (U1 and U2) and minimal intensities (L1 and L2) at interatomic distances in the range of from 1.4 Å to 2.8 Å, the maximal intensities being at an interatomic distance of from 1.4 Å to 1.7 Å and of from 2.2 Å to 2.5 Å and the minimal intensities being at an interatomic distance of from 1.9 Å to 2.2 Å and of from 2.5 Å to 2.8 Å; and index X calculated by the equation X=(U2-L2)/(U1-L1) of about 0.06 or more.