Sorptive propeties of cobalt-containing layered hydroxides

Abstract

Sorption of cationic dye methylene blue and anionic dye congo red on cobalt-containing layered
hydroxides was studied. The hydroxides were shown not to adsorb methylene blue but to take up congo
red probably due to anionic exchange with interlayer carbonate anions. An influence of composition of
layered hydroxide on sorptive properties is indirect: content of cobalt and charge of ions affects interlayer
distance in the structure of layered hydroxide