The synthesis and characterization of AlPO 4 hollow microspheres of uniform size, and the sorption properties for Pb 2+ , Cd 2+ , Cu 2+ , and Zn 2+
| Autor: | Huameng Cai, Huilin Ou, Fuzhong Gong, Bin Zhou |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aqueous solution Metal ions in aqueous solution Langmuir adsorption model Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound symbols.namesake Colloid and Surface Chemistry Adsorption chemistry Chemical engineering Desorption symbols Polystyrene Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. 554:286-295 |
| ISSN: | 0927-7757 |
| Popis: | Well-defined aluminum phosphate hollow microspheres (AlPO4-HMs) of uniform size were synthesized via homogeneous precipitation using polystyrene (PS) as the template. The as-prepared AlPO4-HMs were characterized by FESEM, TEM, XRD, FTIR and N2 adsorption/desorption. The adsorption of AlPO4-HMs towards Pb2+, Cd2+, Cu2+ and Zn2+ metal ions was also studied. The FESEM and TEM images show that the AlPO4-HMs display a regular spherical hollow structure that is about 250 nm in size, and have a special and superior sorption performance for Pb2+ adsorption from aqueous solution compared with the Cd2+, Cu2+, Zn2+ metal ions. The adsorption of Pb2+ ions follows the Langmuir isotherm and the Pseudo-second-order kinetic equation as well as the intra-particle diffusion model. |
| Databáze: | OpenAIRE |
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