This study demonstrates enhanced adsorption of Congo red dye by a crab shell-derived zinc oxide nanocomposite, suggesting its efficacy for environmental cleanup.
Key Points
The maximum adsorption capacity of the CS/ZnO composite for Congo red is 62.88 mg/g.
Kinetics analysis showed that the pseudo 2nd order model best describes the adsorption process.
The adsorption mechanism involves hydrogen bonds and electrostatic attraction between the dye and nanocomposite.
Adsorption was found to be endothermic and spontaneous, implying potential advantages in practical applications.