Browsing by Author "Sotomayor Torres, Clivia"

Now showing items 1-20 of 23

    • Anisotropic Vanadium Oxide Nanostructured Host Matrices for Lithium Ion Intercalation 
      O’Dwyer, Colm; Lavayen, Vladimir; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (Hindawi Publishing Corporation, 2007-08-06)
      We report on unique high-volume low-dimensional V2O5-based turbostratic nanostructures, prepared using sol-gel synthetic methods from V2O5 · nH2O xerogels. Electrochemical intercalation of Li+ to form Li0.65V2O5 resulted ...
    • Atomic Layer Structure of Vanadium Oxide Nanotubes Grown on Nanourchin Structures 
      O’Dwyer, Colm; Lavayen, Vladimir; Newcomb, S. B.; Benavente Espinosa, Eglantina; Santa Ana, María Angélica; González Moraga, Guillermo; Sotomayor Torres, Clivia (The Electrochemical Society, 2007-02-02)
      We report the detailed characterization of high quality vanadium oxide VOx nanotubes NTs and highlight the zipping of adjacent vanadate layers in such NTs formed on remarkable nanourchin structures. These nanostructures ...
    • Comparative structural-vibrational study of nano-urchin and nanorods of vanadium oxide 
      Lavayen, Vladimir; O’Dwyer, Colm; Santa Ana, María Angélica; Newcomb, S. B.; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS Volume: 243 Issue: 13 Pages: 3285-3289 Published: NOV 2006, 2006-11)
      We present a comparative structural -vibrational study of nanostructured systems of V2O5: nano-urchin (VONURs) which are spherical structures composed of a radially oriented array of VOx nanotubes (VOxNTs) with a volumetric ...
    • Enhancement photocatalytic activity of the heterojunction of two-dimensional hybrid semiconductors ZnO/V2O5 
      Aliaga, Juan; Cifuentes, Nasla; González Moraga, Guillermo; Sotomayor Torres, Clivia; Benavente Espinosa, Eglantina (MDPI AG, 2018)
      © 2018 by the authors. Licensee MDPI, Basel, Switzerland. In this work, we report the fabrication of the new heterojunction of two 2D hybrid layered semiconductors—ZnO (stearic acid)/V2O5 (hexadecylamine)—and its behavior ...
    • Functionalization of bentonite by intercalation of surfactants 
      Moreno, Mabel; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Lavayen, Vladimir; Sotomayor Torres, Clivia (TAYLOR & FRANCIS, 2006)
      The functionalization of bentonite by intercalation of surfactants dodecylamine, hexadecylamine, octadecylamine, and the octadecyltrimethylammonium cation is described. Products are characterized by elemental analysis, ...
    • Functionalization of lamellar molybdenum disulphide nanocomposite with gold nanoparticles 
      Lavayen, Vladimir; O’Dwyer, Colm; Santa Ana, María Angélica; Mirabal, N.; Benavente Espinosa, Eglantina; Cárdenas, G.; González Moraga, Guillermo; Sotomayor Torres, Clivia (Elsevier B.V., 2006-08-22)
      This work explores the functionalization of an organic–inorganic MoS2 lamellar compound, prepared by a chemical liquid deposition method (CLD), that has an interlamellar distance of 5.2 nm, using clusters of gold ...
    • A hybrid organic-inorganic layered TiO2 based nanocomposite for sunlight photocatalysis 
      Benavente Espinosa, Eglantina; Maldonado, Carlos; Devis, Sindy; Díaz, Leslie; Lozano, Harold; Sotomayor Torres, Clivia; González Moraga, Guillermo (The Royal Society of Chemistry, 2016)
      A novel hybrid nanocomposite constituted of single TiO2 nanosheets sandwiched between stearic acid self-assembled monolayers was synthesized and tested in the photodegradation of methylene blue under sunlight. The product ...
    • Inorganic Fullerenes: From Lamellar Precursors to Functionalized Nanotubes 
      Lavayen, V.; Benavente Espinosa, Eglantina; Sotomayor Torres, Clivia; González Moraga, Guillermo (Trans Tech Publications Ltd., 2007)
      The intercalation of long-chain primary amines into the laminar matrices of MoS2 or V2O5-gel leads to well ordered, lamellar organic-inorganic nanocomposites. Powder X-ray diffraction analysis, stoichiometry determined ...
    • Intercalation of Europium (III) species into bentonite 
      Sánchez, A.; Echeverría, Y.; Sotomayor Torres, Clivia; González Moraga, Guillermo; Benavente Espinosa, Eglantina (PERGAMON-ELSEVIER SCIENCE LTD, 2006-06-15)
      It is shown that the intercalation of [Europium(bipyridine)213, into bentonite results in a new nanocomposite which preserves the emission properties of Europium (111). The exchange of sodium by europium in bentonite is ...
    • Lanthanide-Clay Nanocomposites: Europium(III) Complexes Intercalated in Bentonite 
      Benavente Espinosa, Eglantina; Echeverría, Y.; Lavayen, Vladimir; Sotomayor Torres, Clivia; González Moraga, Guillermo (Chunli BAI, Sishen XIE, Xing ZHU, 2007-03-15)
    • Lanthanides–clay nanocomposites: Synthesis, characterization and optical properties 
      Celedón, Salvador; Quiroz, Carolina; González Moraga, Guillermo; Sotomayor Torres, Clivia; Benavente Espinosa, Eglantina (Elsevier , Science Ltd., 2008-09-28)
      Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and ...
    • Layered Nanocomposite 2D-TiO(2)with Cu2O Nanoparticles as an Efficient Photocatalyst for 4-Chlorophenol ... 
      Alegría, Matías; Aliaga, Juan; Ballesteros, Luis; Sotomayor Torres, Clivia; González Moraga, Guillermo; Benavente, Eglantina (Springer, 2020)
      New composites formed by layered hybrid TiO2(stearic acid) (LHTiO2) and, Cu2O nanoparticles were studied as photocatalysts that extend the response range to light visible for the evolution of hydrogen and the degradation ...
    • Low-Dimensional, Hinged Bar-code Metal Oxide Layers and Free-Standing, Ordered Organic Nanostructures from ... 
      O’Dwyer, Colm; Lavayen, Vladimir; Fuenzalida, David; Lozano, Harold; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (WILEY-V C H VERLAG GMBH, 2008-07)
      Both low-dimensional bar-coded metal oxide layers, which exhibit molecular hinging, and free-standing organic nanostructures can be obtained from unique nanofibers of vanadium oxide (VOx). The nanofibers are successfully ...
    • Nano-urchin: The formation and structure of high-density spherical clusters of vanadium oxide nanotubes 
      O’Dwyer, Colm; Navas, D.; Lavayen, Vladimir; Benavente Espinosa, Eglantina; Santa Ana, María Angélica; González Moraga, Guillermo; Newcomb, S. B.; Sotomayor Torres, Clivia (AMER CHEMICAL SOC, 2006-06-27)
      We report the observation of urchin-like nanostructures consisting of high-density spherical nanotube radial arrays of vanadium oxide nanocomposite, successfully synthesized by a simple chemical route using an ethanolic ...
    • Pressure induced anisotropy of electrical conductivity in polycrystalline molybdenum disulfide 
      Sánchez, V.; Benavente Espinosa, Eglantina; Lavayen, Vladimir; O’Dwyer, Colm; Sotomayor Torres, Clivia; González Moraga, Guillermo; Santa Ana, María Angélica (ELSEVIER, 2006-09-15)
      Anisotropic specimens of MoS2 are obtained by pressing the microcrystalline powder into special die. This inelastic compression results in a rearrangement of the disulfide micro platelets observed by atomic force microscopy ...
    • Pressure induced anisotropy of electrical conductivity in polycrystalline molybdenum disulfide (vol 252, ... 
      Sánchez, V.; Benavente Espinosa, Eglantina; Lavayen, Vladimir; O’Dwyer, Colm; Sotomayor Torres, Clivia; González Moraga, Guillermo; Santa Ana, María Angélica (2007)
      Anisotropic specimens of MoS2 are obtained by pressing the microcrystalline powder into special die. This inelastic compression results in a rearrangement of the disulfide micro platelets observed by atomic force microscopy ...
    • Reduced surfactant uptake in three dimensional assemblies of VOx Nanotubes Improves Reversible Li+ intercalation ... 
      O'Dwyer, Colm; Lavayen, Vladimir; Tanner, David A.; Newcomb, Simon B.; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (2009)
      The relationship between the nanoscale structure of vanadium pentoxide nanotubes and their ability to accommodate Li+ during intercalation/ deintercalation is explored. The nanotubes are synthesized using two different ...
    • Semiconducting properties of layered cadmium sulphide-based hybrid nanocomposites 
      López Cabaña, Zoraya Elena; Sotomayor Torres, Clivia; González Moraga, Guillermo (2011)
      A series of hybrid cadmium salt/cationic surfactant layered nanocomposites containing different concentrations of cadmium sulphide was prepared by exchanging chloride by sulphide ions in the layered precursor CdX x(OH) y ...
    • Six-fold rotationally symmetric vanadium oxide nanostructures by a morphotropic phase transition 
      O’Dwyer, Colm; Lavayen, Vladimir; Fuenzalida, D.; Newcomb, S. B.; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (WILEY-VCH Verlag GmbH & Co. KGaA, 2007-09-26)
      In this work, we report the first observation of unique hierarchical six-fold rotational symmetrical vanadium oxide based nanocomposite synthesized by a simple chemical route and highlight the first observation of a ...
    • The formation of nanotubes and nanocoils of molybdenum disulphide 
      Lavayen, Vladimir; Mirabal, N.; O’Dwyer, Colm; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; Sotomayor Torres, Clivia; González Moraga, Guillermo (2007)
      This work reports the successful realization of MoS2 nanotubes by a novel intercalation chemistry and hydrothermal treatment. An inorganic-organic precursor of hexadecylamine (HDA) and molybdenum disulphide (MoS2) were ...