Photocatalytic properties and optical characterization of cotton fabric coated via sol-gel with non‐crystalline TiO2 modified with poly(ethylene glycol)

► The cotton samples coated with doped TiO2 displayed self-cleaning properties. ► Poly(ethylene glycol) improves photocatalytic properties of titania. ► Organic acid shows lower pollutant photocatalytic degradation than mineral acids. ► Tauc plot optical analysis was used to investigate crystalline phase of TiO2. ► TiO2 finishing does not influence mechanical properties of fabric.