Abstract
The present work aims to investigate new method to prepare manganese dioxide as well as magnetite nanocomposite based on in-situ technique. The crosslinked copolymeric hydrogel based on 2-acrylamido-2-methylpropane sulfonic acid-co-acrylic acid (AMPS/AA) was used as template to encapsulate the metal oxides by introducing the metal cations followed by redoxy reaction into the gel networks. The chemical, crystal structures, morphology and metal oxide contents were investigated using different spectroscopy and instrumental analyses. The ability of AMPS/AA metal oxide nanocomposites to remove different concentrations of textile cationic dye water pollutants such as crystal violet (CV) from aqueous environments was investigated using UV-visible measurements. The adsorption measurements confirmed the AMPS/AA metal oxide nanocomposites have high efficiency of to remove 1.5 g/L of CV during short time ranged between 20 and 60 minute. The kinetic study indicated that the adsorption process of CV adsorbate using AMPS/AA metal oxide nanocomposite adsorbents obey chemical adsorption mechanism.