| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mali, Gregor
National Institute of Chemistry
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022The Unexpected Helical Supramolecular Assembly of a Simple Achiral Acetamide Tecton Generates Selective Water Channelscitations
- 2022The Unexpected Helical Supramolecular Assembly of a Simple Achiral Acetamide Tecton Generates Selective Water Channelscitations
- 2022Cationic covalent organic polymer thin film for label-free electrochemical bacterial cell detectioncitations
- 2022Nanostructured poly(hydroquinonyl-benzoquinonyl sulfide)/multiwalled carbon nanotube composite cathodescitations
- 2022Low-Dimensional Magnetism in Multivariate Copper/Zinc MOF-74 Materials Formed via Different Mechanochemical Methodscitations
- 2021Liquid-phase sintering of lead halide perovskites and metal-organic framework glassescitations
- 2021Liquid-phase sintering of lead halide perovskites and metal-organic framework glassescitations
- 2021Metal-doped carbons from polyurea-crosslinked alginate aerogel beadscitations
- 2019A Titanium(IV)-Based Metal-Organic Framework Featuring Defect-Rich Ti-O Sheets as an Oxidative Desulfurization Catalystcitations
- 2019Metal-organic framework crystal-glass composites.
- 2019Metal-organic framework crystal-glass compositescitations
- 2019Metal-organic framework crystal-glass compositescitations
- 2019Layered Zn$_2$[Co(CN)$_6$](CH$_3$COO) double metal cyanide: a two-dimensional DMC phase with excellent catalytic performancecitations
- 2018A metal-organic framework with ultrahigh glass-forming ability.
- 2008Structure characterisation of nanoporous materials using state-of-the-art single-crystal X-ray and neutron diffraction techniques
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document
Metal-doped carbons from polyurea-crosslinked alginate aerogel beads
Abstract
Metal-doped polyurea-crosslinked alginate aerogel beads (X-M-alginate; M: Ca, Co, Ni, Cu) were prepared via the reaction of an aromatic triisocyanate (Desmodur RE) with the -OH groups on the surface of pre-formed M-alginate wet gels, and with adsorbed gelation water. The X-M-alginate aerogels consisted of 49-63% polyurea and contained 2-7% metal ions; they were fibrous macro/meso/microporous materials with porosities up to 94% v/v, and BET surface areas 245-486 m2 g-1, comparable to those of native M-alginate aerogels (258-542 m2 g-1). The pyrolysis of X-M-alginate aerogels (M: Co, Ni, Cu) at 800 °C yielded carbon aerogels (X-M-C; 33-37% yield) doped with the corresponding metal (as well as with Cu2O in the case of X-Cu-C), with crystallite sizes of around 22 nm. The X-M-C aerogels retained the general fibrous morphology of their precursor (X-M-alginate) aerogels, and while X-Co-C and X-Ni-C appeared similar, the fibrous morphology of X-Cu-C was distinctly different, indicating an effect of the metal on the nanostructure of the corresponding carbon. The porosities of all X-M-C aerogels were in the range of 88-92% v/v, including macro-, meso- and micropores. Their BET surface areas were in the range of 426-541 m2 g-1, of which 208-319 m2 g-1 was allocated to micropores. In addition to the metals, XPS, Raman and FTIR analyses showed the presence of oxygen and nitrogen functionalities. Carbon in the X-M-C aerogels showed signs of stacking of graphene oxide sheets (14-15 nm), but also a low degree of graphitization and a large number of defects. This work provides a direct, inexpensive method for the preparation of fibrous metal-, oxygen- and nitrogen-doped carbon aerogels with potential for catalytic and electrochemical applications.