The correlation of the number of surface-active sites and adsorption of pollutants with the corresponding value of pКa was shown, and the mechanisms of adsorption were proposed. The acid properties of the surface of the composites were studied using pH-metry and the Hammett indicator. The morphological features and optical properties of the composites were investigated, and the band gaps of the semiconductors included in the ceramic matrix were determined. The phase composition of the composite materials was determined by X-ray diffraction and infrared spectroscopy. The adsorption and photocatalytic activity of iron-containing metal-ceramic composites produced by the selfpropagating combustion of aluminum ferrosilicon in nitrogen with the addition of metallic tantalum (0, 5, 10, 15 wt.%) during oxidative degradation of pharmaceutical pollutants (chloramphenicol, metamizole, cinnarizine) under UV and visible light was evaluated.
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