Three-dimensional interconnected porous tablet ceramic: Synthesis and Pb(II) adsorption

摘要

A novel porous tablet material (PTM) was developed from zirconium pillared montmorillonite (Zr-MMT) by dry pressing technique combined with sacrificial template (polymethylmethacrylate). The developed PTM can be effectively separated from water. The layered structure of montmorillonite was still intact and the three-dimensional interconnected porosity of PTM was evenly distributed, which means that PTM has good permeability. The specific surface area and total pore volume of PTM were 80.04 m(2)/g and 0.28 m(3)/g, respectively, indicating that the PTM can provide a large number of vacant surface active sites. The saturated adsorption capacity to Pb(II) was 215.52 mg/g, which was much higher than that of montmorillonite type clay adsorbents. These findings demonstrate that PTM could be used as separable adsorbent for Pb(II) removal from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved.