Photocatalytic activity of white cement-based mortars with polysiloxane silicone and different doses of titanium dioxide nanoparticles

White cement-based mortars in urban areas are usually discolored and altered their esthetic properties due to air pollutants. The addition of nanoparticles these can provide photocatalytic that decompose pollution agents. Likewise, other hydrophobic agents have been individually studied improve outdoor building constructions. Therefore, this study presented the effect adding nano-TiO2 silicone powder (DOWSILTM) a white cement matrix. were characterized by X-Ray Diffraction (XRD); afterwards, mortar was mixed with additions (0.0, 0.5, 1.0, 3.0%) DOWSILTM 0.5%). mortar's performance evaluated using modification standard Italian test Ente Nazionale Italiano di Unificazione 11259:2016 based on Rhodamine B (RhB) degradation sample exposed UV irradiation. samples subjected irradiation degrade organic dye rhodamine B, monitoring color variation CIEL*a*b* spectrophotometer. Moreover, water permeability contact angle evaluated. This research demonstrates added nano-TiO2/DOWSILTM possess activity. 1.0%/0.5% 3.0%/0.5% showed higher RhB for R4 R26. two materials be employed proportions quality