U(VI) adsorption onto covalent organic frameworks-TpPa-1
| Autor: | Zhuo Dai Li, Feng Luo, Huai Qiang Zhang, Xiao Hong Xiong |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Chemistry chemistry.chemical_element 02 engineering and technology Uranium 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry Adsorption Chemical engineering Adsorption kinetics Covalent bond Desorption Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry 0210 nano-technology Porosity Covalent organic framework |
| Zdroj: | Journal of Solid State Chemistry. 277:484-492 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2019.06.044 |
| Popis: | Covalent organic frameworks (COFs) represent an exciting new type of porous organic materials, which are constructed with organic building units via strong covalent bonds. Here in, the COF-2,4,6-Triformylphloroglucinol p-Phenylenediamine (COF-TpPa-1) was synthesized by solvothermal method for the removal of U(VI) from aqueous solution. Effects of pH, adsorption dose, contact time, uranium solution concentration, temperature and adsorption and desorption cycle on the efficiency of COF-TpPa-1 removal of U(VI) are investigated. SEM, XRD, TGA and FT-IR were employed to characterize the samples and analyze adsorption mechanism. The results manifested COF-TpPa-1 has the high adsorption capacity (qm = 152 mg/g), quick adsorption kinetic, high selectivity, outstanding recycle performance and good resistance to acids, bases and high temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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