نوع مقاله : مقاله علمی پژوهشی
1 دانشکده شیمی، دانشگاه علم و صنعت ایران، تهران، ایران
2 دانشکده شیمی
عنوان مقاله [English]
Cobalt-aluminum layered double hydroxide was successfully prepared by mechano-chemical method. It was synthesized in a mortar by manually grinding the hydrated cobalt and aluminum nitrate salts with sodium hydroxide. According to FT-IR, XRD and BET, the synthesized sample showed characteristic of layered double hydroxides. The as-prepared Co-Al-LDH exhibited a high adsorption activity to the Methyl Orange dye. Batch adsorption experiments were carried out at room temperature under various conditions such as contact time, adsorbate mass and pollutant concentration. Langmuir and modified Freundlich isotherms were also used to investigate adsorption. The results of isotherm studies showed that adsorption of dye onto LDH fits to the modified Langmuir equation with sorption capacity of 656.96 mg/g.