One-step synthesis of Cu(II) metal–organic gel as recyclable material for rapid, efficient and size selective cationic dyes adsorption
| Autor: | Qing Wu, Zhong Wei Jiang, Cheng Zhi Huang, Yu Han Li, Tingting Zhao, Li He, Yuan Fang Li, Yang Li |
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| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Diffusion One-Step 02 engineering and technology 010402 general chemistry Waste Disposal Fluid 01 natural sciences Metal Adsorption Specific surface area Environmental Chemistry Coloring Agents General Environmental Science Nanoporous Chemistry Cationic polymerization General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences Models Chemical Wastewater Chemical engineering visual_art visual_art.visual_art_medium 0210 nano-technology Copper Water Pollutants Chemical |
| Zdroj: | Journal of Environmental Sciences. 86:203-212 |
| ISSN: | 1001-0742 |
| DOI: | 10.1016/j.jes.2019.06.006 |
| Popis: | Efficient removal of non-biodegradable and hazardous dyes from wastewater remains a hot research topic. Herein, a rationally designed a Cu(II)-based metal–organic gel (Cu-MOG) with a nanoporous 3D network structure prepared via a simple one-step mixing method was successfully employed for the removal of cationic dyes. The Cu-MOG exhibited high efficiency, with an adsorption capacity of up to 650.32 mg/g, and rapid adsorption efficiency, with the ability to adsorb 80% of Neutral Red within 1 min. The high adsorption efficiency was attributed to its large specific surface area, which enabled it to massively bind cationic dyes through electrostatic interaction, and a nanoporous structure that promoted intra-pore diffusion. Remarkably, the Cu-MOG displayed size-selective adsorption, based on adsorption studies concerning dyes of different sizes as calculated by density functional theory. Additionally, the adsorption performance of the Cu-MOG still maintained removal efficiency of 100% after three regeneration cycles. These results suggested that the Cu-MOG could be expected to be a promising and competitive candidate to conveniently process wastewater. |
| Databáze: | OpenAIRE |
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