Listar por autor "5186bb58-6008-4566-9604-3563fbe38df1"
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Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts
González Flores, Diego; Sánchez Villalobos, Irene; Zaharieva, Ivelina; Klingan, Katharina; Heidkamp, Jonathan; Chernev, Petko; Menezes, Prashanth W.; Driess, Matthias; Dau, Holger; Montero Villalobos, Mavis Lili (2015)Is water oxidation catalyzed at the surface or within the bulk volume of solid oxide materials? This question is addressed for cobalt phosphate catalysts deposited on inert electrodes, namely crystallites of pakhomovskyite ... -
Nickel-iron catalysts for electrochemical water oxidation – redox synergism investigated by in situ X-ray spectroscopy with millisecond time resolution
González Flores, Diego; Klingan, Katharina; Chernev, Petko; Loos, Stefan; Mohammadi, Mohammad Reza; Pasquini, Chiara; Kubella, Paul; Zaharieva, Ivelina; Smith, Rodney D.L.; Dau, Holger (2018)In future technological systems for chemical storage of renewable energy and production of non-fossil fuels, NiFe oxyhydroxides are prime candidates for efficient alkaline water oxidation (oxygen evolution reaction, OER). ... -
Operando tracking of oxidation-state changes by coupling electrochemistry with time-resolved X-ray absorption spectroscopy demonstrated for water oxidation by a cobalt-based catalysts film
Pasquini, Chiara; Liu, Si; Chernev, Petko; González Flores, Diego; Mohammadi, Mohammad Reza; Kubella, Paul; Jiang, Shan; Loos, Stefan; Klingan, Katharina; Sikolenko, Vadim V.; Mebs, Stefan; Haumann, Michael; Beyer, Paul; D’Amario, Luca; Smith, Rodney D.L.; Zaharieva, Ivelina; Dau, Holger (2021)Transition metal oxides are promising electrocatalysts for water oxidation, i.e., the oxygen evolution reaction (OER), which is critical in electrochemical production of non-fossil fuels. The involvement of oxidation state ... -
Structural and functional role of anions in electrochemical water oxidation probed by arsenate incorporation into cobalt-oxide materials
Villalobos Porras, Javier; González Flores, Diego; Klingan, Katharina; Chernev, Petko; Kubella, Paul; Urcuyo Solórzano, Roberto; Pasquini, Chiara; Mohammadi, Mohammad Reza; Smith, Rodney D.L.; Montero Villalobos, Mavis Lili; Dau, Holger (2019)Direct (photo)electrochemical production of non-fossil fuels from water and CO2 requires water-oxidation catalysis at near-neutral pH in the presence of appropriate anions that serve as proton acceptors. We investigate the ...