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8 p, 897.5 KB |
Magnetic enhancement during the crystallization of ferrihydrite at 25 and 50°C
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Cabello, E. (Universidad de Córdoba. Departamento de Ciencias y Recursos Agricolas y Forestales) ;
Morales, M. P. (Instituto de Ciencia de Materiales de Madrid) ;
Serna, C. J. (Instituto de Ciencia de Materiales de Madrid) ;
Barrón, V. (Universidad de Córdoba. Departamento de Ciencias y Recursos Agricolas y Forestales) ;
Torrent, J. (Universidad de Córdoba. Departamento de Ciencias y Recursos Agricolas y Forestales)
Soil formation usually results in an increase in magnetic susceptibility. The magnetic properties of the products of transformation of ferrihydrite, a typical precursor of other soil Fe oxides, were examined in the present work. [...]
2009 -  10.1346/CCMN.2009.0570105
Clays and Clay Minerals, Vol. 57, Núm. 1 (2009) , p. 46-53
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19 p, 1.3 MB |
Thermal and mineral properties of A1-, Cr-, Mn-, Ni- and Ti-substituted goethite
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Wells, M. A. (CSIRO Exploration and Mining. Australian Resources Research Centre) ;
Fitzpatrick, R. W. (The University of Adelaide) ;
Gilkes, R. J. (University of Western Australia. School of Earth and Geographical Sciences)
Mineralogical and thermal characteristics of synthetic Al-, Cr-, Mn-, Ni- and Ti-bearing goethites, synthesized via alkaline hydrolysis of metal-ferrihydrite gels, were investigated by powder X-ray diffraction and differential thermal analysis. [...]
2006 - 10.1346/CCMN.2006.0540204
Clays and Clay Minerals, Vol. 54, Núm. 2 (2006) , p. 176-194
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7 p, 361.4 KB |
Phosphate and glyphosate adsorption by hematite and ferrihydrite and comparison with other variable-charge minerals
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Gimsing, Anne Louise (The Royal Veterinary and Agricultural University. Department of Natural Sciences) ;
Borggaard, Ole Kragholm (The Royal Veterinary and Agricultural University. Department of Natural Sciences)
Adsorption by synthetic 2-line ferrihydrite and hematite of glyphosate and phosphate, separately and together, was compared with adsorption results for goethite, gibbsite and two kaolinites in order to determine adsorption differences and similarities, in particular competition and phosphate preference, of these variable-charge minerals. [...]
2007 - 10.1346/CCMN.2007.0550109
Clays and Clay Minerals, Vol. 55, Núm. 1 (2007) , p. 108-114
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11 p, 1.3 MB |
Quantification of hematite and goethite concentrations in kaolin using diffuse reflectance spectroscopy : A new approach to Kubelka-Munk theory
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Gonçalves, Ítalo Gomes (Universidade Federal do Rio Grande do Sul. Laboratório de Processamento Mineral. Departamento de Engenharia de Minas) ;
Petter, Carlos Octávio (Universidade Federal do Rio Grande do Sul. Laboratório de Processamento Mineral. Departamento de Engenharia de Minas) ;
Lepkoski Machado, Jaqueline (Universidade Federal do Rio Grande do Sul. Laboratório de Processamento Mineral. Departamento de Engenharia de Minas)
Kaolin ores are usually contaminated by some Fe-bearing minerals, the strong colors of which degrade the quality of the final product. A spectroscopic technique is sought to quantify the content of hematite and goethite, the main contaminant minerals in the kaolin from Capim River in Brazil, was the focus of this study. [...]
2012 - 10.1346/CCMN.2012.0600504
Clays and Clay Minerals, Vol. 60, Núm. 5 (2012) , p. 473-483
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28 p, 1.5 MB |
Boosting Photoelectrochemical Water Oxidation of Hematite in Acidic Electrolytes by Surface State Modification
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Tang, PengYi (Institut Català de Nanociència i Nanotecnologia) ;
Han, Li-Juan (Institut Català d'Investigació Química) ;
Hegner, Franziska Simone (Institut Català d'Investigació Química) ;
Paciok, Paul (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
Biset-Peiró, Martí (Institut de Recerca en Energia de Catalunya) ;
Du, Hong-Chu (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
Wei, Xiankui (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
Jin, Lei (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
Xie, Haibing (Institut Català de Nanociència i Nanotecnologia) ;
Shi, Qin (Institut de Recerca en Energia de Catalunya) ;
Andreu, Teresa (Institut de Recerca en Energia de Catalunya) ;
Lira-Cantu, Monica (Institut Català de Nanociència i Nanotecnologia) ;
Heggen, Marc (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
Dunin-Borkowski, Rafal E. (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Jülich, Alemanya)) ;
López, Núria (Institut Català d'Investigació Química) ;
Galán-Mascarós, José Ramón (Institut Català d'Investigació Química) ;
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya) ;
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
State-of-the-art water-oxidation catalysts (WOCs) in acidic electrolytes usually contain expensive noble metals such as ruthenium and iridium. However, they too expensive to be implemented broadly in semiconductor photoanodes for photoelectrochemical (PEC) water splitting devices. [...]
2019 - 10.1002/aenm.201901836
Advanced Energy Materials, Vol. 9, Issue 34 (September 2019) , art. 1901836
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17 p, 1.2 MB |
Multilayered Hematite Nanowires with Thin-Film Silicon Photovoltaics in an All-Earth-Abundant Hybrid Tandem Device for Solar Water Splitting
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Urbain, Félix (Institut de Recerca en Energia de Catalunya) ;
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia) ;
Smirnov, Vladimir (Forschungszentrum Jülich) ;
Welter, Katharina (Forschungszentrum Jülich) ;
Andreu, Teresa (Institut de Recerca en Energia de Catalunya) ;
Finger, Friedhelm (Forschungszentrum Jülich) ;
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia) ;
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)
The concept of hybrid tandem device structures that combine metal oxides with thin-film semiconducting photoabsorbers holds great promise for large-scale, robust, and cost-effective bias-free photoelectrochemical water splitting (PEC-WS). [...]
2019 - 10.1002/cssc.201802845
ChemSusChem, Vol. 12, Issue 7 (April 2019) , p. 1428-1436
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16 p, 14.9 MB |
Catalan imitations of the ligurian taches noires ware in Barcelona (18th-19th century) : an example of technical knowledge transfer
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Di Febo, Roberta (Universitat de Barcelona. Departament de Prehistòria, Història Antiga i Arqueologia) ;
Casas Duocastella, Lluís (Universitat Autònoma de Barcelona. Departament de Geologia) ;
Capelli, Claudio (Università degli Studi di Genova. Dipartimento di Scienze della Terra Dell'Ambiente e della Vita) ;
Cabella, Roberto (Università degli Studi di Genova. Dipartimento di Scienze della Terra Dell'Ambiente e della Vita) ;
Vallcorba Valls, Oriol (ALBA Laboratori de Llum de Sincrotró)
The ware called Taches Noires was developed in Albisola (Liguria, NW Italy) during the 18th century. In just a few years, it spread all over the Mediterranean (Italy, France, Spain, Tunisia, and Greece) and also in the New World (Canada, the Caribbean Islands, and Mexico). [...]
2018 - 10.3390/min8050183
Minerals, Vol. 8, issue 5 (May 2018) , p. 183
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