| 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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Cunha Silva, L.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Multidimensional ln-aminophthalate photoluminescent coordination polymerscitations
- 2021Decorating MOF-74-derived nanocarbons with a sandwich-type polyoxometalate to enhance their OER activity: Exploring the underestimated bulk-deposition approachcitations
- 2020Advanced framework-modified POM@ZIF-67 nanocomposites as enhanced oxygen evolution reaction electrocatalystscitations
- 2020Oxygen Evolution Reaction Electrocatalytic Improvement in POM@ZIF Nanocomposites: A Bidirectional Synergistic Effectcitations
- 2019Synthesis of Pyridyl and N-Methylpyridinium Analogues of Rosamines: Relevance of Solvent and Charge on Their Photophysical Propertiescitations
- 2016Design of a Water Soluble Fluorescent 3-Hydroxy-4-Pyridinone Ligand Active at Physiological pH Valuescitations
- 2014Novel polyoxometalate silica nano-sized spheres: efficient catalysts for olefin oxidation and the deep desulfurization processcitations
- 2014Tuning the limits of pH interference of a rhodamine ion sensor by introducing catechol and 3-hydroxy-4-pyridinone chelating unitscitations
- 2013Novel Composite Material Polyoxovanadate@MIL-101(Cr): A Highly Efficient Electrocatalyst for Ascorbic Acid Oxidationcitations
- 2013Europium Polyoxometalates Encapsulated in Silica Nanoparticles Characterization and Photoluminescence Studiescitations
- 2010Insights into electronic and structural properties of novel Pd(II) salen-type complexescitations
Places of action
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article
Decorating MOF-74-derived nanocarbons with a sandwich-type polyoxometalate to enhance their OER activity: Exploring the underestimated bulk-deposition approach
Abstract
Ternary nanocomposites consisting of cobalt phosphotungstate, metal nanoparticles and a carbon matrix (Co-4(PW9)(2)@NP@C) were synthesized by decorating four different MOF-74-derived nanocarbons with the sandwich-type polyoxometalate [Co-4(H2O)(2)(PW9O34)(2)](10-), Co-4(pw(9))(2). An unprecedented strategy based on the "bulk" deposition of the POM salt nanocrystals has been persecuted on purpose, avoiding the homogeneous dispersion of POM clusters across the nanocarbon surfaces. Thereby, virtually unaltered Co-4(pw(9))(2) nanocrystals were supported on three of the four nanocarbons, but unexpectedly the combination of bimetallic undoped Co/Ni@C support with the POM induces partial structural modifications in both materials. Consequently, the derived Co-4(pw(9))(2)@Co/Ni@C electrocatalyst undergoes a noteworthy electroactive surface area relative increase, but at the same time, its intrinsic OER activity declines. This is not an obstacle for this nanocomposite to exhibit (along with Co-4(pw(9))(2)@N,S-Co@C) very significant nominal OER performances: low overpotentials (ca. 400 mV to develop 10 mA cm(-2) of current density), fast kinetics at intermediate overpotentials (Tafel slopes <= 67 mV dec(-1)) and remarkable stability levels. Regardless of the specific results, this preliminary study demonstrates for the first time the POM "bulk" deposition strategy as a useful tool to prepare highly active OER catalysts, and it shows up the dramatic effect that the nanocarbon doping and metal composition has on the resultant POM loading, electrocatalytically active area and OER behavior.