Congo Red Decolorization Using Cotton Textile Bound Iron Oxide Particles

In this paper, we have described the preparation of cotton textile modified with magnetic iron oxide particles employing microwave-assisted conversion of ferrous sulfate at high pH followed by drying. Scanning electron microscopy and EDS of native and modified textiles clearly showed the presence of iron oxide particles on the surface of the modified cotton fibers. The modified textile materials exhibited high adsorption of Congo red. The textile-bound iron oxide particles exhibited peroxidase-like activity when the $$N$$ , $$N$$ -diethyl- $$p$$ -phenylenediamine sulfate salt was used as a substrate; this nanozyme activity enabled rapid decolorization of Congo red in the presence of hydrogen peroxide. The modified cotton textile can be prepared in a simple and inexpensive way. Other types of textile-bound enzyme mimetic materials can be prepared and used as low-cost catalysts for a variety of applications.