Metal–organic framework mixed-matrix coatings on 3D printed devices. (September 2019)

• Record Type: Journal Article
• Authors: Figuerola, Andreu; Medina, Deyber A.V.; Santos-Neto, Alvaro J.; Cabello, Carlos Palomino; Cerdà, Víctor; Palomino, Gemma Turnes; Maya, Fernando
• Is Part Of: Applied materials today. Volume 16(2019)
• Page Start: 21
• Page End: 27
• Publication Date: 2019-09
• Subjects: 3D printing -- Metal–organic frameworks -- Mixed-matrix coating -- Peroxymonosulfate activation -- Environmental catalysis; Materials science -- Periodicals; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1016/j.apmt.2019.04.011
• Languages: English
• ISSNs: 2352-9407

Abstract

Graphical abstract: Highlights: MOF immobilization on 3D printed devices via mixed-matrix coatings. Simple, reproducible and robust MOF coatings on devices with intricate geometries. Dye degradation by ZIF-67 peroxymonosulfate activation. Dye degradation using 3D printed devices in batch and flow-through format. Abstract: Strategies to incorporate porous coatings on 3D printed devices with intricate geometries are critical to expanding the scope of application of this type of manufacturing technique. Herein, the preparation of metal–organic framework (MOF)/polymer dispersions to be applied as coatings for 3D printed devices is described. As a proof of concept, submicrometric crystals of a zeolitic imidazolate framework (ZIF-67) were dispersed in a binary mixture comprising a polymer and an organic solvent. The resulting dispersion is dispensed through the structure of 3D printed devices, and after gentle heating for a short time, a homogeneous and robust MOF/polymer mixed-matrix coating (MMC) is formed on the effective area of the 3D printed device. The developed MOF–MMC procedure is simple, fast, and does not require specific instrumentation, or synthetic skills. The resulting MOF–MMC 3D printed devices were evaluated for the peroxymonosulfate activation to enhance the degradation of organic dyes in water. After a degradation time of 30 min using rhodamine B (5 mg L −1 ) as a model dye, the MOF–MMC 3D printed devices showed excellent reusability and reproducibility, degrading an average of 97–98% of the rhodamine B after 10 consecutive degradation cycles comparing three different devices. Dye degradation was evaluated in stirred-tank and flow-through column formats, demonstrating that the developed MOF–MMC procedure is a versatile, safe and convenient way to implement micro/nanoparticulated materials for water pollutant degradation applications.