Now showing items 1-20 of 83

    • 13C CP-MAS NMR of azacycle-thiourea inclusion compounds 

      Jara Vergara, Paul; Yutronic Sáez, Nicolás; González Moraga, Guillermo (Taylor and Francis, 1998)
      13C CP-MAS NMR spectra of thiourea host-guest inclusion compounds containing amines, 1-azabicyclo[2.2.2]octane, 1,4-diazabicyclo[2.2.2]octane, 3-azabicyclo[3.2.2]nonane and 1, 3, 5, 7 tetrazadamantane at 25°C are reported. ...
    • 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 ...
    • Composites of laminar nanostructured ZnO and VOx - Nanotubes Hybrid as visible light active photocatalysts 

      Benavente Espinosa, Eglantina; Navas, Daniel; Devis, Sindy; Segovia, Marjorie; Sotomayor Torres, Clivia; González Moraga, Guillermo (MDPI, 2018)
      A series of hybrid heterostructured nanocomposites of ZnO with V2O5 nanotubes (VOx-NTs) in different mixing ratios were synthesized, with the aim of reducing the recombination of photoinduced charge carriers and to optimize ...
    • Deposition of Laminar TiO2-Based Nanocomposites on a Modified Quartz Crystal Gold Surface 

      Lozano, Harold; Benavente Espinosa, Eglantina; González Moraga, Guillermo (American Scientific Publishers, 2007-11-30)
      The deposition of hybrid organic–inorganic nanocomposites of titanium dioxide—prepared by hydrolysis of titanium tretraisopropoxide modified through exchanging one of its ligands with a butinoxy-, octiloxy- or phenoxy-group—on ...
    • Deposition of Molybdenum Disulfide Thin Film on a Gold Surface 

      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 ...
    • An easy one-pot solvothermal synthesis of poorly crystalline solid ReS2/C microspheres 

      Aliaga, Juan Antonio; Araya, Juan Francisco; Lozano, Harold; Benavente Espinosa, Eglantina; Alonso Núñez, Gabriel; González Moraga, Guillermo (Elsevier, 2015)
      Dense microspheres consisting of poorly crystalline ReS2 embedded in carbon were synthesized with a high yield via a facile one-pot solvothermal route, by reacting dirhenium decacarbonyl, elemental sulfur and an aromatic ...
    • Electrical conductivity and lithium diffusion in molybdenum disulfide intercalated with poly(ethylene oxide) 

      González Moraga, Guillermo; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; Donoso, J. P.; Bonagamba, T. J.; Mello, N. C.; Panepucci, H. (Elsevier, 1996)
      Electrical conductivity and lithium diffusion coefficients of nanocomposites prepared by intercalation of molybdenum disulfide with poly(ethylene oxide), Li0.1,MoS2(PEO)γ, are informed. The products show a semiconductor ...
    • Electrical conductivity of MoS2 based organic–inorganic nanocomposites 

      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 ...
    • Electrochemical behavior of lithium intercalated in a molybdenum disulfide-crown ether nanocomposite 

      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 ...
    • Electrochemical behaviour of NN′-thiobisamines. Cyclic voltammetry in dimethyl sulphoxide with low water content 

      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 ...
    • 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 ...
    • Foreword 

      Benavente Espinosa, Eglantina; González Moraga, Guillermo; Kajzar, F.; Rau, Ileana (Taylor & Francis Group, 2010)
    • 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 ...
    • High-Yield Preparation of Titanium Dioxide Nanostructures by Hydrothermal Conditions 

      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 ...
    • Hybrid chitosan-mercaptopropyltrimethoxysilane films with Ag and Au nanoparticles: Synthesis and properties 

      Fuentes, S.; Vera, V.; Rivera, F.; Moreno, M.; Benavente Espinosa, Eglantina; González Moraga, Guillermo (2012)
      Flexible and transparent polymer complexes prepared by blending chitosan (CS) with about 1 M of oligo-mercaptopropilsiloxane were functionalized by incorporating silver or gold nanoparticles in a concentration range of ...
    • Hybrid Chitosane-Mercaptopropylsiloxane Films - Synthesis and Properties 

      Fuentes, S.; Ayala, M. V.; Benavente Espinosa, Eglantina; González Moraga, Guillermo (TAYLOR & FRANCIS LTD, 2010)
      A series of new Chitosan=poly(mercaptopropysiloxane) hybrid films were obtained by blending mercaptopropylsiloxane oligomers (pMPS) with chitosan (CHI). The MPS oligomers were prepared by sol-gel using as precursor ...
    • Hybrid Laminar Organic-Inorganic Semiconducting Nanocomposites 

      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 ...