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1.
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51 p, 4.2 MB |
Highly reduced ecotoxicity of ZnO-based micro/nanostructures on aquatic biota : influence of architecture, chemical composition, fixation, and photocatalytic efficiency
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Serrà, Albert (Empa Swiss Federal Laboratories for Materials Science and Technology) ;
Zhang, Yue (Institut Català de Nanociència i Nanotecnologia) ;
Sepúlveda, Borja (Institut Català de Nanociència i Nanotecnologia) ;
Gomez, Elvira (Universitat de Barcelona. Departament de Ciència de Materials i Química Física) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Michler, Johann (Empa Swiss Federal Laboratories for Materials Science and Technology) ;
Philippe, Laetitia (Empa Swiss Federal Laboratories for Materials Science and Technology)
Developing efficient sunlight photocatalysts with enhanced photocorrosion resistance and minimal ecotoxicological effects on aquatic biota is critical to combat water contamination. Here, the role of chemical composition, architecture, and fixation on the ecotoxicological effects on microalgae of different ZnO and ZnO@ZnS based water decontamination photocatalysts was analyzed in depth. [...]
2020 -  10.1016/j.watres.2019.115210
Water Research, Vol. 169 (Feb. 2020) , art. 115210
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2.
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8 p, 4.5 MB |
Local manipulation of metamagnetism by strain nanopatterning
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Foerster, Michael (ALBA Laboratori de Llum de Sincrotró) ;
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física) ;
Coy, Emerson (Adam Mickiewicz University. NanoBioMedical Centre (Poland)) ;
Quintana Romero, Alberto (Universitat Autònoma de Barcelona. Departament de Física) ;
Gómez-Olivella, Carles (Universitat de Barcelona. Departament Física Aplicada i Òptica) ;
Esqué de los Ojos, Daniel (Universitat Autònoma de Barcelona. Departament de Física) ;
Vallcorba Valls, Oriol (ALBA Laboratori de Llum de Sincrotró) ;
Frontera, Carlos (Institut de Ciència de Materials de Barcelona) ;
Aballe, Lucía (ALBA Laboratori de Llum de Sincrotró) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Fina, Ignasi (Institut de Ciència de Materials de Barcelona)
Among metamagnetic materials, FeRh alloys are technologically appealing due to their uncommon antiferromagnetic-to-ferromagnetic metamagnetic transition which occurs at a temperature T* just above room temperature. [...]
2020 - 10.1039/D0MH00601G
Materials Horizons, Vol. 7, Issue 8 (August 2020) , p. 2056-2062
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3.
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8 p, 1.7 MB |
Voltage-driven motion of nitrogen ions : a new paradigm for magneto-ionics
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de Rojas, Julius (Universitat Autònoma de Barcelona. Departament de Física) ;
Quintana Romero, Alberto (Georgetown University. Department of Physics (USA)) ;
Lopeandía Fernández, Aitor (Universitat Autònoma de Barcelona. Departament de Física) ;
Salguero, Joaquín (Instituto de Micro y Nanotecnología (CNM-CSIC)) ;
Muñiz, Beatriz (Instituto de Micro y Nanotecnología (CNM-CSIC)) ;
Ibrahim, Fatima (Centre National de la Recherche Scientifique. Université Grenoble Alpes (France)) ;
Chshiev, Mairbek (Centre National de la Recherche Scientifique. Université Grenoble Alpes (France)) ;
Nicolenco, Aliona (Universitat Autònoma de Barcelona. Departament de Física) ;
Liedke, Maciej O. (Helmholtz-Zentrum Dresden-Rossendorf. Institute of Radiation Physics (Germany)) ;
Butterling, Maik (Helmholtz-Zentrum Dresden-Rossendorf. Institute of Radiation Physics (Germany)) ;
Wagner, Andreas (Helmholtz-Zentrum Dresden-Rossendorf. Institute of Radiation Physics (Germany)) ;
Sireus, Veronica (Universitat Autònoma de Barcelona. Departament de Física) ;
Abad, Llibertat (Institut de Microelectrònica de Barcelona IMB-CNM (CSIC)) ;
Jensen, Christopher J. (Georgetown University. Department of Physics (USA)) ;
Liu, Kai (Georgetown University. Department of Physics (USA)) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Costa-Krämer, José L. (Instituto de Micro y Nanotecnología (CNM-CSIC)) ;
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física) ;
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Magneto-ionics, understood as voltage-driven ion transport in magnetic materials, has largely relied on controlled migration of oxygen ions. Here, we demonstrate room-temperature voltage-driven nitrogen transport (i. [...]
2020 - 10.1038/s41467-020-19758-x
Nature communications, Vol. 11 (November 2020) , art. 5871
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4.
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28 p, 966.7 KB |
Oxide wizard : an EELS application to characterize the white lines of transition metal edges
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Yedra, Lluís (Universitat de Barcelona. Departament d'Electrònica) ;
Xuriguera, Elena (Universitat de Barcelona. Departament d'Enginyeria Química) ;
Estrader, Marta (Universitat de Barcelona. Departament de Química Inorgànica) ;
López-Ortega, Alberto (Università Degli Studi di Firenze. Dipartimento di Chimica U. Schiff) ;
Baró, M.D. (Universitat Autònoma de Barcelona. Departament de Física) ;
Nogués, Josep (Institut Catala de Nanociencia i Nanotecnologia) ;
Roldan, Manuel (Universidad Complutense de Madrid. Departamento de Física Aplicada III) ;
Varela, Maria (Oak Ridge National Laboratory) ;
Estrade, Sonia (Universitat de Barcelona. Departament d'Electrònica) ;
Peiro, Francesca (Universitat de Barcelona. Departament d'Electrònica)
Physicochemical properties of transition metal oxides are directly determined by the oxidation state of the metallic cations. To address the increasing need to accurately evaluate the oxidation states of transition metal oxide systems at the nanoscale, here we present Oxide Wizard. [...]
2014 - 10.1017/S1431927614000440
Microscopy and Microanalysis, Vol. 20, issue 3 (June 2014) , p. 698-705
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5.
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22 p, 1.1 MB |
Interdependence between training and magnetization reversal in granular Co-CoO exchange bias systems
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Menéndez Dalmau, Enric (KU Leuven. Instituut voor Kern- en Stralingsfysica) ;
Dias, T. (KU Leuven. Instituut voor Kern- en Stralingsfysica) ;
Geshev, Julian (Instituto de Física, Universidade Federal Do Rio Grande Do sul (UFRGS)) ;
López-Barbera, José Francisco (Institut Català de Nanociència i Nanotecnologia) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Steitz, Roland (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH) ;
Kirby, Brian (Brian J.) (National Institute of Standards and Technology (Gaithersburg, Estats Units d'Amèrica)) ;
Borchers, J.A. (National Institute of Standards and Technology (Gaithersburg, Estats Units d'Amèrica)) ;
Pereira, L.M.C. (KU Leuven. Instituut voor Kern- en Stralingsfysica) ;
Vantomme, André (KU Leuven, Instituut voor Kern- en Stralingsfysica) ;
Temst, Kristiaan (KU Leuven, Instituut voor Kern- en Stralingsfysica)
The interdependence between training and magnetization reversal in granular Co-CoO exchange bias (EB) systems prepared by O ion implantation in Co thin films is demonstrated by polarized neutron reflectometry. [...]
2014 - 10.1103/PhysRevB.89.144407
Physical review B : Condensed matter and materials physics, Vol. 89, issue 14 (Sep. 2014) , art. 144407
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6.
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24 p, 893.3 KB |
Green electrochemical template synthesis of CoPt nanoparticles with tunable size, composition, and magnetism from microemulsions using an ionic liquid (bmimPF6)
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Serrà, Albert (Institut de Nanociència i Nanotecnologia (IN2UB)) ;
Gómez, Elvira (Institut de Nanociència i Nanotecnologia (IN2UB)) ;
López-Barbera, José Francisco (Institut Català de Nanociència i Nanotecnologia) ;
Nogués, Josep (Institut de Nanociència i Nanotecnologia (IN2UB)) ;
Vallés, Elisa (Institut de Nanociència i Nanotecnologia (IN2UB))
Electrodeposition from microemulsions using ionic liquids is revealed as a green method for synthesizing magnetic alloyed nanoparticles, avoiding the use of aggressive reducing agents. Microemulsions containing droplets of aqueous solution (electrolytic solution containing Pt(IV) and Co(II) ions) in an ionic liquid (bmimPF) define nanoreactors in which the electrochemical reduction takes place. [...]
2014 - 10.1021/nn500367q
ACS nano, Vol. 8, Issue 5 (May 2014) , p. 4630-4639
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7.
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9 p, 2.5 MB |
Hybrid Ni@ZnO@ZnS-Microalgae for Circular Economy : a Smart Route to the Efficient Integration of Solar Photocatalytic Water Decontamination and Bioethanol Production
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Serrà, Albert (Empa Swiss Federal Laboratories for Materials Science and Technology) ;
Artal, Raül (Universitat de Barcelona. Departament de Ciència de Materials i Química Física) ;
García Amorós, Jaume (Universitat de Barcelona. Departament de Química Inorgànica i Orgànica) ;
Sepúlveda, Borja (Institut Català de Nanociència i Nanotecnologia) ;
Gómez, Elvira (Universitat de Barcelona. Departament de Ciència de Materials i Química Física) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Philippe, Laetitia (Empa Swiss Federal Laboratories for Materials Science and Technology)
Water remediation and development of carbon-neutral fuels are a priority for the evermore industrialized society. The answer to these challenges should be simple, sustainable, and inexpensive. Thus, biomimetic-inspired circular and holistic processes combing water remediation and biofuel production can be an appealing concept to deal with these global issues. [...]
2020 - 10.1002/advs.201902447
Advanced science, Vol. 7, Issue 3 (February 2020) , art. 1902447
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8.
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21 p, 1.9 MB |
Unveiling a New High-Temperature Ordered Magnetic Phase in ϵ-Fe2O3
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García Muñoz, José Luis (Institut de Ciència de Materials de Barcelona) ;
Romaguera, Arnau (Institut de Ciència de Materials de Barcelona) ;
Fauth, François (ALBA Laboratori de Llum de Sincrotró) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Gich i Garcia, Martí (Institut de Ciència de Materials de Barcelona)
Iron oxides are among the most abundant materials on Earth, and yet there are some of their basic properties which are still not well-established. Here, we present temperature-dependent magnetic, X-ray, and neutron diffraction measurements refuting the current belief that the magnetic ordering temperature of ϵ-FeO is ∼500 K, i. [...]
2017 - 10.1021/acs.chemmater.7b03417
Chemistry of materials, Vol. 29, Issue 22 (November 2017) , p. 9705-9713
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9.
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30 p, 2.6 MB |
Novel Ba-hexaferrite structural variations stabilized on the nanoscale as building blocks for epitaxial bi-magnetic hard/soft sandwiched maghemite/hexaferrite/maghemite nanoplatelets with out-of-plane easy axis and enhanced magnetization
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Belec, B. (Jožef Stefan International Postgraduate School) ;
Dražić, G. (National Institute of Chemistry. Department for Materials Chemistry) ;
Gyergyek, Sašo (Jožef Stefan Institute. Department for Materials Synthesis) ;
Podmiljšak, B. (Jožef Stefan Institute. Department for Nanostructured Materials) ;
Goršak, T. (Jožef Stefan International Postgraduate School) ;
Komelj, M. (Jožef Stefan Institute. Department for Nanostructured Materials) ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Makovec, D. (Jožef Stefan International Postgraduate School)
Atomic-resolution scanning-transmission electron microscopy showed that barium hexaferrite (BHF) nanoplatelets display a distinct structure, which represents a novel structural variation of hexaferrites stabilized on the nanoscale. [...]
2017 - 10.1039/c7nr05894b
Nanoscale, Vol. 9, Issue 44 (November 2017) , p. 17551-17560
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10.
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39 p, 934.4 KB |
Remanence plots as a probe of spin disorder in magnetic nanoparticles
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De Toro, José A. (Instituto Regional de Investigación Científica Aplicada) ;
Vasilakaki, Marianna (Ethniko Kentro Ereunas Physikōn Epistēmōn "Demokritos") ;
Lee, Su Seong (Institute of Bioengineering and Nanotechnology) ;
Andersson, Mikael S. (Uppsala University. Department of Engineering Sciences) ;
Normile, Peter S. (Instituto Regional de Investigación Científica Aplicada) ;
Yaacoub, Nader (Université du Maine. Institut des Molécules et Mateŕiaux du Mans) ;
Murray, Peyton D. (University of California. Physics Department) ;
Sánchez, Elena H. (Instituto Regional de Investigación Científica Aplicada) ;
Muñiz, Pablo (Instituto Regional de Investigación Científica Aplicada) ;
Peddis, Davide (Istituto di Struttura della Materia) ;
Mathieu, Roland (Uppsala University. Department of Engineering Sciences) ;
Liu, Kai (University of California. Physics Department) ;
Geshev, Julian (Universidade Federal Do Rio Grande Do sul. Instituto de Física) ;
Trohidou, Kalliopi N. (Ethniko Kentro Ereunas Physikōn Epistēmōn "Demokritos") ;
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Remanence magnetization plots (e. g. , Henkel or δM plots) have been extensively used as a straightforward way to determine the presence and intensity of dipolar and exchange interactions in assemblies of magnetic nanoparticles or single domain grains. [...]
2017 - 10.1021/acs.chemmater.7b02522
Chemistry of materials, Vol. 29, Issue 19 (October 2017) , p. 8258-8268
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