Enhanced Adsorption of Methyl Orange by Mongolian Montmorillonite after Aluminum Pillaring

This article studies the enhancement of methyl orange (MO) adsorption by Mongolian montmorillonite (MMt) modified intercalation Keggin Al13 complex, followed calcination during pillaring process. The properties MMt, Al-intercalated MMt (P-MMt), and Al-pillared (P-MMt-C) were determined using X-ray diffraction (XRD), thermogravimetric analysis (TGA), surface-area analysis, a field emission scanning electron microscope (FE-SEM). MO was subsequently evaluated. XRD basal distance (d001) specific surface area (SSA) increased after modification MMt. TGA results revealed that P-MMt P-MMt-C had better thermal stability than obtained (e.g., P-MMt-C400) showed larger without pillaring. process P-MMt-C400 supposed to be dominated chemisorption heterogeneous multilayer adsorption, according kinetic isotherm studies. maximum capacity is 6.23 mg/g. ability contributed complex attracting increase in macro-, meso- micro-pores (>1.2 nm). this study could applied as an adsorbent water purification system remove or other dye elements.