Listar Departament: Física por autoría "2c9dffb6-d56f-4e5f-87a3-4f2e25574c10"

Mostrando ítems 1-7 de 7

    • closedAccess   Controlled Carbon Nitride Growth on Surfaces for Hydrogen Evolution Electrodes 

      Shalom, Menny; Gimenez, Sixto; Schipper, Florian; Herraiz Cardona, Isaac; Bisquert, Juan; Antonietti, Markus Wiley (2014-04-01)
      Efficient and low-cost electrocatalysts for the hydrogen evolution reaction are highly desired for future renewable energy systems. Described herein is the reduction of water to hydrogen using a metal-free carbon nitride ...

    • closedAccess   Hole conductivity and acceptor density of p-type CuGaO2 nanoparticles determined by impedance spectroscopy: The effect of Mg doping 

      Herraiz Cardona, Isaac; Fabregat-Santiago, Francisco; Renaud, Adèle; Julian-Lopez, Beatriz; Odobel, Fabrice; Carioc, Laurent; Jobic, Stéphane; Gimenez, Sixto Elsevier (2013)
      Delafossite materials like CuGaO2 have appeared as promising p-type semiconductor materials for their exploitation in tandem dye sensitized solar cells and water splitting photoelectrochemical cells. However, the intrinsic ...

    • openAccess   Near-complete suppression of surface losses and total internal quantum efficiency in BiVO4 photoanodes 

      Trzesniewski, Bartek J.; Digdaya, Ibadillah; Nagaki, Tetsuro; Ravishankar, Sandheep; Herraiz Cardona, Isaac; Vermaas, David; Longo, Alessandro; Gimenez, Sixto; Smith, Wilson A. Royal Society of Chemistry (2017-05-26)
      Bismuth vanadate (BiVO4) is one of the most efficient light absorbing metal oxides for solar water splitting. BiVO4 photoanodes immersed in an electrolyte in an open circuit configuration and exposed to simulated solar ...

    • closedAccess   Plasmonic versus catalytic effect of gold nanoparticles on mesoporous TiO2 electrodes for water splitting 

      Haro, Marta; Abargues, Rafael; Herraiz Cardona, Isaac; Martínez-Pastor, Juan P.; Gimenez, Sixto Elsevier (2014-10)
      Solar water splitting with metal oxide semiconductors constitutes a promising approach to the conversion of solar energy into chemical energy stored in the atomic bonds of hydrogen molecules. In the present study, we ...

    • closedAccess   Relaxation of Electron Carriers in the Density of States of Nanocrystalline TiO2 

      Bertoluzzi, Luca; Herraiz Cardona, Isaac; Gottesman, Ronen; Zaban, Arie; Bisquert, Juan American Chemical Society (2014-01)
      Band gap localized states and surface states play a dominant role in the application of nanocrystalline metal oxides to photovoltaics and solar fuel production. Electrons injected in nanocrystalline TiO2 by voltage or ...

    • openAccess   The Complex Role of Carbon Nitride as a Sensitizer in Photoelectrochemical Cells 

      Herraiz Cardona, Isaac; Yang, Xiaofei; Gimenez, Sixto; Antonietti, Markus; Shalom, Menny; Xu, Jingsan Wiley (2015-08)
      The role of carbon nitride (C3N4) as an absorber in a photoelectrochemical cell is reported. C3N4-sensitized TiO2 mesoporous film created via in-situ, vapor-transport growth results in a direct Ti–O–C bonding. The material ...

    • closedAccess   Understanding the Role of Underlayers and Overlayers in Thin Film Hematite Photoanodes 

      Steier, Ludmila; Herraiz Cardona, Isaac; Fabregat-Santiago, Francisco; Bisquert, Juan; Tilley, S. David; Grätzel, Michael Wiley (2014-12-23)
      Recent research on photoanodes for photoelectrochemical water splitting has introduced the concept of under- and overlayers for the activation of ultrathin hematite films. Their effects on the photocatalytic behavior were ...