Solid photocatalyst material comprising solid material composed only of titanium dioxide having photocatalytic function, and method for producing the same

摘要

Provided are a solid photocatalyst material comprising a solid material (no carrier) composed only of titanium dioxide having a photocatalytic function, and a method for producing the same. The present invention consists of a solid material composed only of titanium dioxide of anatase type crystal (may include brookite type crystal) without containing a rutile type crystal, and the following i) to vi); i) fine Pore distribution 5 nm to 15 nm, ii) specific surface area 70 to 110 m 2 / g, iii) true density 3.90 ± 1.0 g / cm 3, iv) bulk specific gravity 1.3 to 1.6, v) Vickers hardness Is a solid photocatalyst material satisfying each numerical value of 600 to 800 Hv, vi) crystal grain size of 50 to 80 nm, and a method for producing the same. [Effect] A new material that does not require the addition of a carrier composed of solid titanium dioxide composed of only the same anatase type crystal (may include brookite type crystal) from the outer shell to the inner core of the solid. Provide a solid photocatalyst material of the type. [Selection] Figure 6