| 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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Tremel, Wolfgang
University of Münster
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 2023Bandgap engineering of melon using highly reduced graphene oxide for enhanced photoelectrochemical hHydrogen evolution
- 2021A generalized method for high-speed fluorination of metal oxides by spark plasma sintering yields Ta3O7F and TaO2F with high photocatalytic activity for oxygen evolution from water
- 2021Insights into the In Vitro Formation of Apatite from Mg‐Stabilized Amorphous Calcium Carbonatecitations
- 2020Monitoring a Mechanochemical Reaction Reveals the Formation of a New ACC Defect Variant Containing the HCO 3 – Anion Encapsulated by an Amorphous Matrixcitations
- 2020Monitoring a Mechanochemical Reaction Reveals the Formation of a New ACC Defect Variant Containing the HCO$_{3}$ $^{-}$ Anion Encapsulated by an Amorphous Matrixcitations
- 2018Robustness of elastic properties in polymer nanocomposite films examined over the full volume fraction rangecitations
- 2018From Single Molecules to Nanostructured Functional Materialscitations
- 2017Polypropylene-based melt mixed composites with singlewalled carbon nanotubes for thermoelectric applications: Switching from p-type to n-type by the addition of polyethylene glycolcitations
- 2017Direction-dependent elastic properties and phononic behavior of PMMA/BaTiO3 nanocomposite thin filmscitations
- 2017Snapshots of calcium carbonate Formation - a step by step analysiscitations
- 2016Correlation of epoxy material properties with the toughening effect of fullerene-like WS 2 nanoparticlescitations
- 2016Hierachical Ni@Fe2O3 superparticles through epitaxial growth of gamma-Fe2O3 nanorods on in situ formed Ni nanoplatescitations
- 2015Siliceous spicules enhance fracture-resistance and stiffness of pre-colonial Amazonian ceramicscitations
- 2014Rational assembly and dual functionalization of Au@MnO heteroparticles on TiO2 nanowirescitations
- 2014Carbon-coated anatase TiO2 nanotubes for Li- and Na-ion anodes
- 2013Graphene-type sheets of Nb1-xWxS2citations
- 2012Vanadium pentoxide nanoparticles mimic vanadium haloperoxidases and thwart biofilm formationcitations
- 2012Multifunctional superparamagnetic MnO@SiO2 core/shell nanoparticles and their application for optical and magnetic resonance imagingcitations
- 2011Strong Stabilization of Amorphous Calcium Carbonate Emulsion by Ovalbumin: Gaining Insight into the Mechanism of 'Polymer-Induced Liquid Precursor' Processescitations
- 2011Strong stabilization of amorphous calcium carbonate emulsion by ovalbumin: gaining insight into the mechanism of 'polymer-induced liquid precursor' processes.citations
- 2011Carbonate-coordinated metal complexes precede the formation of liquid amorphous mineral emulsions of divalent metal carbonatescitations
- 2011Hydrogen peroxide sensors for cellular imaging based on horse radish peroxidase reconstituted on polymer-functionalized TiO2 nanorodscitations
- 2010Formation of silicones mediated by the sponge enzyme silicatein-alphacitations
- 2009Evidence for biogenic processes during formation of ferromanganese crusts from the Pacific Oceancitations
- 2008Early homogenous amorphous precursor stages of calcium carbonate and subsequent crystal growth in levitated dropletscitations
- 2008Bioencapsulation of living bacteria (Escherichia coli) with poly(silicate) After transformation with silicatein-alpha genecitations
- 2008Reply to "Mirror Symmetry Breaking" of the centrosymmetric CaCO3 crystals with amino acidscitations
- 2008Nucleation and growth of CaCO(3) mediated by the egg-white protein ovalbumin: A time-resolved in situ study using small-angle neutron scatteringcitations
- 2008Poly(silicate)-metabolizing silicatein in siliceous spicules and silicasomes of demosponges comprises dual enzymatic activities (silica polymerase and silica esterase)citations
- 2007Phase selection of calcium carbonate through the chirality of adsorbed amino acidscitations
- 2007Formation of giant spicules in the deep-sea hexactinellid Monorhaphis chuni (Schulze 1904): electron-microscopic and biochemical studiescitations
- 2007Phasenselektion von Calciumcarbonat durch die Chiralität adsorbierter Aminosäurencitations
- 2005Crystal structure, magnetic properties, and 57Fe Mössbauer spectroscopy of the two-dimensional coordination polymers [M(1,2-bis(1,2,4-triazol-4-yl)ethane)2(NCS)2] (MII = Fe, Co).citations
Places of action
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article
Evidence for biogenic processes during formation of ferromanganese crusts from the Pacific Ocean
Abstract
<p>Ferromanganese [Fe/Mn] crusts formed on basaltic seamounts, gain considerable economic importance due to their high content of Co, Ni, Cu, Zn and Pt. The deposits are predominantly found in the Pacific Ocean in depths of over 1000 m. They are formed in the mixing layer between the upper oxygen-minimum zone and the lower oxygen-rich bottom zone. At present an almost exclusive abiogenic origin of crust formation is considered. We present evidence that the upper layers of the crusts from the Magellan Seamount cluster are very rich in coccoliths/coccolithophores (calcareous phytoplankton) belonging to different taxa. Rarely intact skeletons of these unicellular algae are found, while most of them are disintegrated into their composing prisms or crystals. Studies on the chemical composition of crust samples by high resolution SEM combined with an electron probe microanalyzer (EPMA) revealed that they are built of distinct stacked piles of individual compartments. in the center of such piles Mn is the dominant element, while the rims of the piles are rich in Fe (MINERALIZATION aspect). The compartments contain coccospheres usually at the basal part. Energy dispersive X-ray spectroscopy (EDX) analyses showed that those coccospheres contain, as expected, CaCO(3) but also Mn-oxide. Detailed analysis displayed on the surface of the coccolithophores a high level of CaCO(3) while the concentration of Mn-oxide is relatively small. With increasing distance from the coccolithophores the concentration of Mn-oxide increases on the expense of residual CaCO(3). We conclude that coccoliths/coccolithophores are crucial for the seed/nucleation phase of crust formation (BIOMINERALIZATION aspect). Subsequently, after the biologically induced mineralization phase Mn-oxide deposition proceeds "auto"catalytically. (C) 2009 Elsevier Ltd. All rights reserved.</p>