Design, synthesis, and Identification of a new nanocomposite based on waste papers and reduced graphene oxide aerogel and its eva‎luation in adsorption of color combinations

9/10/2025 12:00:00 AM

The presence of color in the water flow leads to destructive effects on life. Among several natural and synthetic dyes, azo group dyes are known as highly carcinogenic compounds due to the release of amine and benzidine groups. Aside from color pollution, paper is the third largest industrial polluter for ecosystem health. In this research work, a new nanocomposite was designed and synthesized based on the extraction of cellulose fibers from waste paper, its combination with graphene oxide sheets, the in-situ reduction process and the formation of cellulose fibers/reduced graphene oxide aerogel nanocomposite. This new nanocomposite is a promising adsorbent material for crystal violet removal through electrostatic and π–π stacking interactions between nanocomposite and cationic dye, according to its chemical and structural characteristics (FT-IR, EDX, Fe-sem, XRD, TGA analysis). The Surface adsorption tests were performed to remove violet crystal from the aqueous medium by the prepared nanocomposite adsorbent. The effect of different parameters such as pH, contact time, amount of adsorbent was investigated. The results of the surface adsorption analysis obtained at different temperatures showed that the surface adsorption pattern on the adsorbent can be accurately described by the Freundlich isotherm.

ضايعات كاغذي، آيروژل اكسيد گرافن كاهش يافته، كامپوزيت جاذب، رنگ كريستال ويوليت

crystal violet color،wastepapers، reduced graphene oxide aerogel،nanocomposite absorbent

nasrin ghorbani

fateme radinekiyan