Heavy metal adsorption by graphene oxide modified with 5-amino-3(2-thienyl)pyrazole using central composite design/response surface methodology (CCD/RSM)
Mobina Alimohammady, Mansour Jahangiri, Masoud Salavati‐Niasari, Aseel M. Aljeboree
Abstract
for As(iii), underscoring the superior uptake potential of 5-ATP-GO toward toxic metal ions. Furthermore, adsorption kinetics and isotherm studies revealed that the data were well fitted to the pseudo-second-order kinetic model and Freundlich isotherm, indicating that the adsorption process follows a heterogeneous chemisorption mechanism. Finally, comparative experiments with pristine GO and other conventional adsorbents confirmed the superior removal efficiency and enhanced performance of the 5-ATP-GO composite.
Topics & Concepts
AdsorptionGrapheneResponse surface methodologyCentral composite designOxideZeta potentialThermogravimetric analysisMaterials scienceMetal ions in aqueous solutionFourier transform infrared spectroscopyMetalAqueous solutionChemical engineeringKineticsInorganic chemistryComposite numberPyrolysisSpecific surface areaIonRaman spectroscopyNuclear chemistryChemistryGraphene and Nanomaterials ApplicationsNanomaterials for catalytic reactionsGraphene research and applications