• openAccess   A metal-organic framework converted catalyst that boosts photo-electrochemical water splitting 

      Cardenas-Morcoso, Drialys; Ifraemov, Raya; García-Tecedor, Miguel; Liberman, Itamar; Gimenez, Sixto; Hod, Idan Royal Society of Chemistry (2019-04-08)
      Realization of photo-electrochemical water splitting to generate H2 alternative fuel requires the facilitation of the kinetically-sluggish oxygen evolution reaction (OER) occurring at the photoanode. To do so, there is a ...
    • openAccess   An artificial leaf device built with earth-abundant materials for combined H-2 production and storage as formate with efficiency > 10% 

      Ampelli, Claudio; Giusi, Daniele; Miceli, Matteo; Merdzhanova, Tsvetelina; Smirnov, Vladimir; Chime, Ugochi; Astakhov, Oleksandr; Martín, Antonio José; Veenstra, Florentine; Garcés Pineda, Felipe Andrés; González-Cobos, Jesús; García-Tecedor, Miguel; Gimenez, Sixto; Jaegermann, Wolfram; Centi, Gabriele; Pérez-Ramírez, Javier; Galan-Mascaros, Jose Ramon; Perathoner, Siglinda Royal Society of Chemistry (2023-02-15)
      A major challenge for achieving energy transition and transforming the current energy model into distributed production is the development of efficient artificial leaf-type devices capable of directly converting carbon ...
    • openAccess   An integrated photoanode based on non-critical raw materials for robust solar water splitting 

      Cardenas-Morcoso, Drialys; García-Tecedor, Miguel; Merdzhanova, Tsvetelina; Smirnov, Vladimir; Finger, Friedhelm; Kaiser, Bernhard; Jaegermann, Wolfram; Gimenez, Sixto Royal Society of Chemistry (2020)
      Herein, we have developed an integrated photoanode for solar water splitting based on an ‘‘Earthabundant’’ Ni–Fe based electrocatalyst combined with a versatile multijunction Si-based photovoltaic device, designed in such ...
    • openAccess   Direct Observation of the Chemical Transformations in BiVO4 Photoanodes upon Prolonged Light-Aging Treatments 

      Arcas, Ramón; Cardenas-Morcoso, Drialys; Spadaro, Maria Chiara; García-Tecedor, Miguel; Mesa, Camilo A.; Arbiol, Jordi; Fabregat-Santiago, Francisco; Gimenez, Sixto; Mas, Elena Wiley (2022-03-11)
      Exposing BiVO4 photoanodes to light-aging treatments is known to produce a significant photocurrent enhancement. Until now, the interpretation given to this phenomenon is associated to the formation of oxygen vacancies and ...
    • openAccess   Electrophoretic deposition of antimonene for photoelectrochemical applications 

      Barrio, Jesús; Gibaja, Carlos; García-Tecedor, Miguel; Abisdris, Liel; Torres, Iñigo; Karjule, Neeta; Gimenez, Sixto; Shalom, Menny; Zamora, Félix Elsevier (2020-06-10)
      Antimonene is a recently developed two-dimensional material with outstanding expected physical properties based on theoretical calculations. Liquid phase-exfoliation has become the most straight forward preparation method ...
    • openAccess   Enhancing the Optical Absorption and Interfacial Properties of BiVO4 with Ag3PO4 Nanoparticles for Efficient Water Splitting 

      Shaddad, Maged; Cardenas-Morcoso, Drialys; Arunachalam, Prabhakarn; García-Tecedor, Miguel; Ghanem, Mohamed A.; Bisquert, Juan; Al-Mayouf, Abdullah; Gimenez, Sixto American Chemical Society (2018-05)
      Photoelectrochemical water splitting using semiconductor materials has emerged as a promising approach to produce hydrogen (H2) from renewable resources such as sunlight and water. In the present study, Ag3PO4 nanoparticles ...
    • openAccess   Highly Durable Nanoporous Cu2–xS Films for Efficient Hydrogen Evolution Electrocatalysis under Mild pH Conditions 

      Fernandez-Climent, Roser; Redondo, Jesús; García-Tecedor, Miguel; Spadaro, Maria Chiara; Li, Junnan; Chartrand, Daniel; Schiller, Frederik; Pazos, Jhon; Hurtado, Mikel F.; de la Peña O'Shea, Víctor Antonio; Kornienko, Nikolay; Arbiol, Jordi; Barja, Sara; Mesa, Camilo A.; Gimenez, Sixto American Chemical Society (2023-08-04)
      Copper-based hydrogen evolution electrocatalysts are promising materials to scale-up hydrogen production due to their reported high current densities; however, electrode durability remains a challenge. Here, we report a ...
    • openAccess   Intensity-Modulated Photocurrent Spectroscopy for Solar Energy Conversion Devices: What Does a Negative Value Mean? 

      Cardenas-Morcoso, Drialys; Bou, Agustín; Ravishankar, Sandheep; García-Tecedor, Miguel; Gimenez, Sixto; Bisquert, Juan American Chemical Society (2020-01-10)
      Small perturbation techniques constitute a wide family of tools for the characterization of solar energy conversion devices such as photovoltaic cells and photoelectrochemical (PEC) cells for solar fuel production. Two ...
    • openAccess   Laser-Reduced BiVO4 for Enhanced Photoelectrochemical Water Splitting 

      Barawi Morán, Mariam; Gomez-Mendoza, Miguel; Oropeza, Freddy E; Gorni , Giulio; Villar-Garcia, Ignacio J.; Gimenez, Sixto; de la Peña O'Shea, Víctor Antonio; García-Tecedor, Miguel American Chemical Society (2022-07-27)
      The present study proposes a laser irradiation method to superficially reduce BiVO4 photoelectrodes and boost their water oxidation reaction performance. The origin of this enhanced performance toward oxygen evolution ...
    • openAccess   Lead Sulfide Nanocubes for Solar Energy Storage 

      Lemsi, Amira; Cardenas-Morcoso, Drialys; Haro, Marta; Gil Barrachina, Carlos; Aranda Alonso, Clara; Maghraoui Meherzi, Hager; García-Tecedor, Miguel; Gimenez, Sixto; Julian-Lopez, Beatriz Wiley (2020-04-23)
      Lead sulfide (PbS) nanocubes are produced by a very simple solvothermal procedure that uses a unique molecule, ethylenediamine, as solvent and capping ligand to control the size and shape of the nanocrystals. Detailed ...
    • openAccess   Li2SnO3 branched nano- and microstructures with intense and broadband white-light emission 

      García-Tecedor, Miguel; Bartolomé, Javier; Maestre, David; Trampert, Achim; Cremades, Ana Springer Verlag (2019)
      Exploiting the synergy between microstructure, morphology and dimensions by suitable nanomaterial engineering, can effectively upgrade the physical properties and material performances. Li2SnO3 elongated nano- and ...
    • openAccess   New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes 

      Alvarez, Agustin; García-Tecedor, Miguel; Montañés, Laura; Mas, Elena; Gimenez, Sixto; Fabregat-Santiago, Francisco Wiley (2022)
      Impedance spectroscopy (IS), intensity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) are well-established powerful modulated techniques to characterize optoelectronic ...
    • openAccess   Photocatalytic and Photoelectrochemical Degradation of Organic Compounds with All-Inorganic Metal Halide Perovskite Quantum Dots 

      Cardenas-Morcoso, Drialys; Gualdrón Reyes, Andrés Fabián; Ferreira Vitoreti, Ana Beatriz; García-Tecedor, Miguel; YOON, SEOG JOON; Solis de la Fuente, Mauricio; Mora-Sero, Ivan; Gimenez, Sixto American Chemical Society (2019-01)
      Inspired by the outstanding optoelectronic properties reported for all-inorganic halide perovskite quantum dots (QDs), we have evaluated the potential of these materials toward the photocatalytic and photoelectrochemical ...
    • closedAccess   Push-PullElectronicEffectsin Surface-ActiveSites EnhanceElectrocatalyticOxygenEvolutionon TransitionMetalOxides 

      Garcés Pineda, Felipe Andrés; Nguyen, Huu Chuong; Blasco Ahicart, Marta; García-Tecedor, Miguel; de fez febre, mabel; Tang, PengYi; Arbiol, Jordi; Gimenez, Sixto; Galan-Mascaros, Jose Ramon; Lopez, Nuria Wiley (2021-01-19)
      Sustainable electrocatalysis of the oxygen evolution reaction (OER) constitutes a major challenge for the realization of green fuels. Oxides based on Ni and Fe in alkaline media have been proposed to avoid using critical ...
    • openAccess   Self-supported ultra-active NiO-based electrocatalysts for the oxygen evolution reaction by solution combustion 

      Bucci, Alberto; García-Tecedor, Miguel; Corby, Sacha; Rao, Reshma R.; Martin-Diaconescu, Vlad; Oropeza, Freddy E; de la Peña O'Shea, Víctor Antonio; Durrant, James; Gimenez, Sixto; Lloret Fillol, Julio Royal Society of Chemistry (2021-04-20)
      The oxygen evolution reaction (OER) is a fundamental process to develop a technology that can drive energy transition towards renewable and sustainable fuels. Nevertheless, efficient and straightforward methodologies to ...
    • openAccess   Separating bulk and surface processes in NiOx electrocatalysts for water oxidation 

      Corby, Sacha; García-Tecedor, Miguel; Tengeler, Sven; Steinert, Céline; Moss, Benjamin; Mesa, Camilo A.; Heiba, Hany Fathy; Wilson, Anna A.; Kaiser, Bernhard; Jaegermann, Wolfram; Francàs Forcada, Laia; Gimenez, Sixto; Durrant, James Royal Society of Chemistry (2020-08-10)
      Nickel oxide-based catalysts currently represent the state of the art in electrochemical water oxidation in alkaline pH. However, much of their functionality remains poorly understood, particularly regarding catalytically ...
    • openAccess   Solution-Processed Ni-Based Nanocomposite Electrocatalysts: An Approach to Highly Efficient Electrochemical Water Splitting 

      Noguera-Gomez, Jaume; García-Tecedor, Miguel; Sánchez Royo, Juan Francisco; Valencia, Luisa M.; de la Mata, María; Herrera Collado, Miriam; Molina, Sergio I.; Abargues, Rafael; Gimenez, Sixto American Chemical Society (2021-05-10)
      In this study, we report an up-scalable and low-cost solution-processed method to in situ synthesize an earth-abundant non-stoichiometric NiOx-based electrocatalytic film for water oxidation. The catalytic activity was ...
    • openAccess   Spectroelectrochemical Analysis of the Water Oxidation Mechanism on Doped Nickel Oxides 

      Rao, Reshma R.; Corby, Sacha; Bucci, Alberto; García-Tecedor, Miguel; Mesa, Camilo A.; Rossmeisl, Jan; Gimenez, Sixto; Lloret Fillol, Julio; Stephens, Ifan; Durrant, James American Chemical Society (2022-04-20)
      Metal oxides and oxyhydroxides exhibit state-of-the-art activity for the oxygen evolution reaction (OER); however, their reaction mechanism, particularly the relationship between charging of the oxide and OER kinetics, ...
    • openAccess   Switchable All Inorganic Halide Perovskite Nanocrystalline Photoelectrodes for Solar-Driven Organic Transformations 

      Fernandez-Climent, Roser; Gualdrón Reyes, Andrés Fabián; García-Tecedor, Miguel; Mesa, Camilo A.; Cardenas-Morcoso, Drialys; Montañés, Laura; Barea, Eva M; Mas, Elena; Julian-Lopez, Beatriz; Mora-Sero, Ivan; Gimenez, Sixto Wiley (2021-10-30)
      All inorganic halide perovskite nanocrystals (NCs) are considered as fascinating materials for a wide range of optoelectronic applications encompassing photovoltaics, lasing, sensing, and photocatalysis due to their ...
    • openAccess   The role of oxygen vacancies in water splitting photoanodes 

      Fernandez-Climent, Roser; Gimenez, Sixto; García-Tecedor, Miguel Royal Society of Chemistry (2020-12-01)
      Photoelectrochemical water splitting has become one of the most reliable solar-energy conversion technologies for clean hydrogen production. In the race of developing and understanding new semiconducting materials for ...