FIELD: chemistry.
SUBSTANCE: invention can be used in production of construction materials. Photocatalytic composite material practically free from titanium dioxide contains limestone in amount at least 0.05% by the weight of sodium and calcium titanate in crystalline phases CT2 and/or CT5, characterised by the following diffraction maximums: CT2: (002) d=4.959; (210-202) d=2.890; (013) d=2.762 and (310-122) d-2.138; CT5: (002) d=8.845; (023) d-4.217; (110) d=3.611 and (006) d=2.948. The empirical formula of calcium titanate in phase CT2 is CaTi2O5, and the empirical formula of calcium titanate in phase CT5 is CaTi5O11.
EFFECT: invention makes it possible to increase photocatalytic activity of composite materials without application of titanium dioxide.
18 cl, 8 dwg, 7 ex
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