Removal of Bromocresol Green by Nanocomposite Based on Chitosan/Nb2O5/MnO2 and Chitosan /Nb2O5/Cr2O3

Chitosan poly(methacrylate) composites were created and used in the current investigation to adsorb bromocresol green from aqueous solutions. a new type of multifunctional material chitosan/nb2o5/mno2 and chitosan /nb2o5/cr2o3 nanocomposite was prepared by situ chemistry approach. the composites that were created were identified by thermogravimetric analysis, x-ray diffraction, scanning electron microscopy, and fourier transform infrared spectroscopy. the impacts of experimental factors, including sample ph and adsorption period, were also looked at in relation to the bromocresol green elimination by the proposed adsorbent. additionally, a thorough examination of the adsorption properties of the synthesized adsorbent, including kinetics, adsorption isotherms, and thermodynamics, was conducted. the freundlich model accurately predicted the adsorption isotherm, and after 10 minutes of shaking at ph 7.0 and ph10, the maximum adsorption capacity was determined to be (604,166) g mg-1.for chitosan/nb2o5/mno2 and chitosan /nb2o5/cr2o3 respectively.