AI Article Synopsis
- The study introduces a cost-effective method for removing parabens from water using a combination of metal-organic frameworks (MOFs) and 3D printing, resulting in a cube-array device for efficient pollutant extraction.
- The 3D-printed devices, coated with a stable, zinc-free carbon layer derived from ZIF-8, demonstrated high adsorption rates, achieving over 90% removal of ethylparaben in just 1 hour due to their porous structure and favorable interactions.
- Continuous-flow tests showed that the devices maintained extraction efficiency for various parabens across multiple cycles, highlighting their easy regeneration and potential for practical applications in sustainable water treatment processes.
Article Abstract
In this study, we report a novel and cost-effective solution for removing parabens from water by combining MOF-derived porous carbons and 3D printing. In addition to being easy to prepare, the resulting 3D-printed device, with a cube-array structure, can also be fabricated in a robust column format for flow-through extraction of pollutants. Using an in-situ growth method, ZIF-8 MOF was directly deposited onto a 3D-printed device, achieving a stable and durable integration of the MOF onto the device. After the carbonization process, fully functional devices were obtained, entirely coated with a zinc-free carbon layer derived from ZIF-8, exhibiting both micro- and mesoporosity. c-ZIF-8@3D-printed cubes exhibited fast adsorption kinetics in batch conditions, achieving over 90 % extraction of ethylparaben within just 1 h, thanks to the mesoporosity of the obtained ZIF-8 derived carbon, as well as the possibility of establishing π-π interactions between it and the pollutant. Continuous-flow experiments demonstrated that c-ZIF-8@3D-printed columns showed high extraction efficiency for four parabens, maintaining removal rates between 83-92 % after 10 cycles. The columns also showed easy regeneration, enabling multiple uses of the 3D support and enhancing both the sustainability and efficiency of the water treatment process. Finally, the c-ZIF-8@3D-printed column was also tested for the simultaneous extraction of parabens from different real water samples with excellent results, confirming its potential for practical applications in water treatment.
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| http://dx.doi.org/10.1016/j.jhazmat.2024.136697 | DOI Listing |
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