Selective uptake of cationic organic dyes in a series of isostructural Co2+/Cd2+ metal-doped metal–organic frameworks
| Autor: | Yao-Yu Wang, Cui-Juan Wang, Zi-Xin Zhu, Dong-Ning Liu, Dan Luo, Shuang Chen, Yan-yu Qian |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Chemistry Cationic polymerization Condensed Matter Physics Electronic Optical and Magnetic Materials Inorganic Chemistry Metal Adsorption Chemical engineering Ionic strength visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Molecule Metal-organic framework Physical and Theoretical Chemistry Isostructural |
| Zdroj: | Journal of Solid State Chemistry. 270:180-186 |
| ISSN: | 0022-4596 |
| Popis: | We study adsorption behaviors of isomorphic metal-doped metal-organic frameworks in the field of dyeing wastewater treatment technology. Herein, a series of 3D isostructural Co2+/Cd2+ metal-doped metal-organic frameworks named compounds 1–5 were successfully synthesized under hydrothermal conditions and used in adsorbing and separation dyes. We demonstrate that dye molecules can be adsorbed on the external surface of the MOFs and their loadings can be tuned by adjusting the rate of the central metal atoms. We show that compound 5 crystals containing Cd2+ are selective adsorbent for pH, temperature, ionic strength responsive adsorption. Their adsorptive properties of cationic dyes in aqueous solutions are higher than that of neutral and anionic dyes. Our method of isomorphic metal-doped opens new possibilities to construct adsorption strength regulation systems for a wide range of applications and facilitates new efforts in environmental purification. |
| Databáze: | OpenAIRE |
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