[en] Full text: The last decades have been characterized by strong attempts of mitigation and awareness about environment damages due to the unbridled human activity, in the industrial and domestic environments[1]. This research addresses nano-TiO₂- functionalized cotton fabric manufacturing for wastewater and NO_x decontamination. The nano-functionalized fabric was manufactured via exhaust pad- dry-cure using citric acid as an eco-friendly cross-linker, sodium hypophosphite as a cross-linking catalyst, and TiO₂ nanoparticles(TiO₂-NPs) as a photocatalyst. Ester cross-link formation was assessed by ATR-IR. EDX and SEM explored the presence and coating of cotton yarns by TiO₂-NPs. Nano-TiO₂- functionalized fabric performance in water decontamination was evaluated in the photocatalytic removal of reactive red 141 dye solution (initial concentration of 10 ppm), as a water pollutant model, under UV-C radiation for 3.75 h. Its reuse feasibility was also analyzed. NO_x photocatalytic abatement was conducted in a closed chamber designed according to ISO 22197-1:2007. The NO_x initial concentration was fixed in 10 ppm, and the flow rate was 1 L min-1. The results disclosed excellent photocatalytic activity of the nano-TiO₂-functionalized cotton fabric, removing an average of 88.4% of dye color over the using cycles, and, 88.2% of nitrogen oxide abatement. The development of ester-link was detected. EDX and SEM confirmed TiO₂-NPs film coating on the cotton surface. Incorporating TiO₂-NPs in cotton fabric matrix shown great potential to contribute to the pollution control from wastewater a NO_x, showing a low-complexity alternative for water and air quality improvement. References: [1] M.C. Zijp, M.A.J. Huijbregts, A.M. Schipper, C. Mulder, L. Posthuma, Identification and ranking of environmental threats with ecosystem vulnerability distributions, Scientific Reports. 7 (2017) 9298. doi:10.1038/s41598-017-09573-8. (author)