|Apr 15, 2019|
3D printing MOFs with nanocellulose(Nanowerk News) Nanocellulose has gained popularity in 3D printing because of its rheological properties, hydrophilicity, nontoxicity, and versatile surface chemistry. The fabrication of nanocellulose-based materials using 3D printing for complex structures has potential for economic large-scale processing.
|For instance, nanocellulose dramatically improves the 3D-printability of carbon nanotubes for wearable electronics. Researchers are also equipping nanocellulose with additional functionalities to produce implants for cartilage diseases using 3D printing.|
|In addition, printed cellulose has advanced applications such as printed electronics, biomedical devices, energy storage, construction, separations, cosmetic, and food applications.|
|3D printing of nanocellulose has been reported using several methods, including matrix-assisted 3D printing, direct ink writing, and stereolithography.|
|Reporting their work in Advanced Functional Materials("CelloMOF: Nanocellulose Enabled 3D Printing of Metal–Organic Frameworks"), researchers at Stockholm University have recently demonstrated a 3D printable hydrogel ink containing metal-organic frameworks (MOFs). The synthesis and printing processes take place at room temperature using water as a solvent.|
|a–c) Photos of 3D printed scaffolds: TOCNF, 4CelloZIF8, and 4CelloZIF8-Cur. Insets are images representing the pores, with the scale bar of 0.5 mm. d,e) SEM images of scaffold b, 4CelloZIF8 and scaffold c, 4CelloZIF8-Cur. Scale bar = 1 µm. (Reprinted with permission by Wiley-VCH Verlag) (click on image to enlarge)|
|This is a new processability route of MOFs using 3D printing of oxidized cellulose nanofibers incorporated with ZIF-8 and MIL-100 (Fe). The scientists named this system CelloMOF.|
|This synthesis approach can be used to encapsulate drugs such as curcumin and methylene blue into the CelloMOF systems.|
|The hybrid inks are printed using simple and inexpensive 3D printer, which can be used by both experts and nonspecialists, extending the use of 3D-printed CelloMOFs in several applications, including water purification, air purification, catalysis, sensors, etc.|
|"We believe that this work provides a new proof-of-concept prospect for MOFs processing that is flexible, simple, fast, promising for large-scale production and for uptake and release of a variety of guest molecules," trhe authors conclude their report.|
|By Michael Berger – Michael is author of two books by the Royal Society of Chemistry: Nano-Society: Pushing the Boundaries of Technology and Nanotechnology: The Future is Tiny.|
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