Cotton fabric was modified with Na2EDTA using a hydrothermal method to introduce surface hydroxyl groups. and subsequent coordination of Fe(III) ions to produce an Na2EDTA modified cotton-fiber-Fe complex (Fe-EDTA-Cotton). After characterization by SEM and FTIR. Fe-EDTA-Cotton was used as a heterogeneous photocatalyst to reduce Cr(VI) and degrade Reactive Red 195 oxidatively. https://foldlyers.shop/product-category/75-ohm-rg6/