Ultrafast preparation of hydrophobic ZIF-67/copper mesh via electrodeposition and hydrophobization for oil/water separation and dyes adsorption
| Autor: | Shouping Xu, Peizhang Zhou, Cailong Zhou, Yuanyang Yan, Jiang Cheng |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
chemistry.chemical_element Filtration and Separation 02 engineering and technology 021001 nanoscience & nanotechnology Copper Analytical Chemistry Congo red chemistry.chemical_compound Adsorption 020401 chemical engineering chemistry Chemical engineering Homogeneous HSAB theory Oil water Stearic acid 0204 chemical engineering 0210 nano-technology Ultrashort pulse |
| Zdroj: | Separation and Purification Technology. 272:118871 |
| ISSN: | 1383-5866 |
| Popis: | Homogeneous hydrophobic ZIF-67 decorated copper mesh was prepared by ultrafast electrodeposition and subsequent hydrophobization with stearic acid or 1-dodecanethiol. The preparation can be completed within 9 min under room temperature. Based on the hard-soft-acid-base (HSAB) theory, there exists difference of the interaction between Co2+ and specific groups (carboxy or sulfhydryl), the oil/water separation and dyes adsorption performances were thus affected after ZIF-67-coated copper mesh was hydrophobized. The separation efficiency of the hydrophobic meshes for various oil/water mixtures was all greater than 98%, and remained almost no decline after several cycles of separation. However, the intrusion pressure of ZIF-67/copper mesh modified by 1-dodecanethiol is higher than the one modified by stearic acid. At the same time, the 1-dodecanethiol modified ZIF-67/copper mesh displayed a high adsorption capacity for Congo red (near 2000 mg/m2), while the adsorption rate of the mesh modified by stearic acid is significantly faster. This work proposed a simple and fast method to build continuous, homogeneous MOFs film for oil/water separation and dyes adsorption. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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