Now showing items 1-20 of 30

    • 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 ...
    • 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 ...
    • 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 ...
    • Benavente Espinosa, Eglantina; Riveros, G.; López, Z.; Santa Ana, María Angélica; Aliaga, Juan Antonio; González Moraga, Guillermo (Taylor & Francis Group, LLC, 2010-10-04)
      The restacking of molybdenum disulphide (MoS2) on a gold surface is reported. Thin films were obtained by spontaneous deposition from single-layer suspensions of the sulfide on a Quartz Crystal Microbalance gold electrode ...
    • Benavente Espinosa, Eglantina; Santa Ana, María Angélica; González Moraga, Guillermo (Wiley-VCH, 2004-07-13)
      The electrical conductivities of a series of MoS2-organic layer nanocomposites prepared by the intercalation of donors like poly(ethylene oxide) and secondary amines are compared. Although for intercalated MoS2 species ...
    • Santa Ana, María Angélica; Mirabal, N.; Benavente Espinosa, Eglantina; Gómez Romero, Pedro; González Moraga, Guillermo (2007 Elsevier Ltd., 2007-06-02)
      A new nanocomposite, obtained from the intercalation of the cyclic ether 12-Crown-4 into MoS2, Li0.32MoS2(12-Crown-4)0.19, is described. The laminar product has an interlaminar distance of 14.4A° . The electrical conductivity ...
    • González Moraga, Guillermo; Santa Ana, María Angélica; Chadwick, Isabel (1983)
      The electrochemical behaviour of NN′-thiobispiperidine and NN′-thiobismorpholine in dimethyl sulphoxide at low water content has been studied by cyclic voltammetry. Electro-oxidation in this medium, producing SO<inf&g ...
    • 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 ...
    • Vásquez, Juan; Lozano, Harold; Lavayen, Vladimir; Lira-Cantú, Mónica; Gómez Romero, Pedro; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo (American Scientific Publishers, 2007-11-03)
      The effect of the neutral surfactant dodecylamine and octadecylamine on the synthesis of TiO2-based nanostructures by the treatment of anatase with NaOH under hydrothermal conditions in the temperature range 120–150 C ...
    • López Cabaña, Zoraya Elena; Navas, D.; Benavente Espinosa, Eglantina; Santa Ana, María Angélica; Lavayen, Vladimir; González Moraga, Guillermo (TAYLOR & FRANCIS, 2012)
      Hybrid two-dimensional nanocomposites of transition metal semiconductors based on molybdenum disulfide, zinc oxide, and vanadium pentoxide, in which ultra-thin sheets of the inorganic component are stabilized by insertion ...
    • Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo (World Scientific, 1996-12-02)
    • González Moraga, Guillermo; Santa Ana, María Angélica; Benavente Espinosa, Eglantina (Elsevier Ltd, 1997)
      The intercalation of poly(ethylene oxide) (PEO) in molybdenum sulfide (MoS2) forms the nanocomposites LixMoS2(PEO)0.5 and LixMoS2(PEO)1.0. The lithium ion diffusivity in PEO-containing phases, which depends on both PEO and ...
    • Donoso, José Pedro; Magon, Claudio José; Schneider, José; Bloise, Antonio Carlos; Benavente Espinosa, Eglantina; Sánchez, Víctor; Santa Ana, María Angélica; González Moraga, Guillermo (SOCIEDADE BRASILEIRA FISICA, 2006-03)
      Cluster architecture and lithium motion dynamics are investigated in nanocomposites formed by the intercalation of lithium and a dialkylamine (diethylamine, dibutylamine and dipentylamine) in molybdenum disulfide by means ...
    • 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 ...
    • Nascimento, Otaciro R.; Magon, Claudio J.; Lima, Jose Fernando; Donoso, Jose Pedro; Benavente Espinosa, Eglantina; Paez, Jaime; Lavayen, Vladimir; Santa Ana, María Angélica; González Moraga, Guillermo (2008)
      In this work we report results from continuous-wave (CW) and pulsed electron paramagnetic resonance (EPR) and proton nuclear magnetic resonance (NMR) studies of the vanadium pentoxide xerogel V2O 5:nH2O (n ≈ 1.6). The low ...
    • Nascimento, Otaciro R.; Magon, Claudio José; Lopes, L. V. S.; Donoso, José Pedro; Benavente Espinosa, Eglantina; Páez, J.; Lavayen, Vladimir; Santa Ana, María Angélica; González Moraga, Guillermo (TAYLOR & FRANCIS LTD, 2006)
      This work describes an Electron Paramagnetic Resonance (EPR) and Nuclear Magnetic Resonance (NMR) study of the vanadium pentoxide xerogel V2O5:nH(2)O with n approximate to 1.8 Experiments were performed in the temperature ...
    • González Moraga, Guillermo; Santa Ana, María Angélica; Sánchez, Víctor; Benavente Espinosa, Eglantina (Gordon Breach, 2000)
      Chemical modification of molybdenum disulfide based either in the restacking of the layered solid or the intercalation of lithium or organic donors as poly(ethylene oxide) or dialkylamines lends to products with improved ...
    • 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 ...
    • Moreno, Mabel; Santa Ana, María Angélica; González Moraga, Guillermo; Benavente Espinosa, Eglantina (ELSEVIER, 2010)
      In this work, a series of composite polymer electrolytes (CPEs) basically constituted by polyacrylonitrile (PAN) and a clay, montmorillonite (Bentonite), as filler have been developed, in which the clay in its lithiated ...
    • Moreno, Mabel; Santa Ana, María Angélica; González Moraga, Guillermo; Benavente Espinosa, Eglantina (2010)
      In this work, a series of composite polymer electrolytes (CPEs) basically constituted by polyacrylonitrile (PAN) and a clay, montmorillonite (Bentonite), as filler have been developed, in which the clay in its lithiated ...