title: Rattle-type carbon-alumina core-shell spheres: synthesis and application for adsorption of organic dyes.
abstract: Porous micro- and nanostructured materials with desired morphologies and tunable pore sizes are of great interests because of their potential applications in environmental remediation. In this study, novel rattle-type carbon-alumina core-shell spheres were prepared by using glucose and metal salt as precursors via a simple one-pot hydrothermal synthesis followed by calcination. The microstructure, morphology, and chemical composition of the resulting materials were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and N(2) adsorption-desorption techniques. These rattle-type spheres are composed of a porous Al(2)O(3) shell (thickness ≈ 80 nm) and a solid carbon core (diameter ≈ 200 nm) with variable space between the core and shell. Furthermore, adsorption experiments indicate that the resulting carbon-alumina particles are powerful adsorbents for the removal of Orange-II dye from water with maximum adsorption capacity of ~210 mg/g. It is envisioned that these rattle-type composite particles with high surface area and large cavities are of particular interest for adsorption of pollutants, separation, and water purification.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, P R China.
authors.forename: Jiabin
authors.initials: J
authors.lastname: Zhou
authors.forename: Chuan
authors.initials: C
authors.lastname: Tang
authors.forename: Bei
authors.initials: B
authors.lastname: Cheng
authors.forename: Jiaguo
authors.initials: J
authors.lastname: Yu
authors.forename: Mietek
authors.initials: M
authors.lastname: Jaroniec
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods
chemical_list: D004396:Coloring Agents; D014874:Water Pollutants, Chemical; D002244:Carbon; D000537:Aluminum Oxide