• Double Perovskite Cobaltites Integrated in a Monolithic and Noble Metal-Free Photoelectrochemical Device for Efficient Water Splitting 

      Zhu, Junjie; Guđmundsdóttir, Jónína B.; Strandbakke, Ragnar; Both, Kevin G.; Aarholt, Thomas; Carvalho, Patricia A.; Sørby, Magnus H.; Jensen, Ingvild J.T.; Guzik, Matylda N.; Norby, Truls; Haug, Halvard; Chatzitakis, Athanasios (Peer reviewed; Journal article, 2021)
      Water photoelectrolysis has the potential to produce renewable hydrogen fuel, therefore addressing the intermittent nature of sunlight. Herein, a monolithic, photovoltaic (PV)-assisted water electrolysis device of minimal ...
    • Galvanic Deposition of Pt Nanoparticles on Black TiO2 Nanotubes for Hydrogen Evolving Cathodes 

      Touni, Aikaterini; Liu, Xin; Kang, Xiaolan; Almeida Carvalho, Patricia; Diplas, Spyridon; Both, Kevin Gregor; Sotiropoulos, Sotiris; Chatzitakis, Athanasios (Peer reviewed; Journal article, 2021)
      A galvanic deposition method for the in-situ formation of Pt nanoparticles (NPs) on top and inner surfaces of high-aspect-ratio black TiO2-nanotube electrodes (bTNTs) for true utilization of their total surface area has ...
    • Immobilization of FeFe-hydrogenase on black TiO2 nanotubes as biocathodes for the hydrogen evolution reaction 

      Liu, Xin; Risbakk, Sanne; Almeida Carvalho, Patricia; Yang, Mingyi; Backe, Paul Hoff; Bjørås, Magnar; Norby, Truls; Chatzitakis, Athanasios (Peer reviewed; Journal article, 2022)
      Hydrogenases are attractive biocatalysts for utilization in electrochemical devices as potential replacement for Pt in hydrogen evolving electrodes. In this work, we investigate the immobilization of ferredoxin tagged ...
    • Surface protonic conductivity in chemisorbed water in porous nanoscopic CeO2 

      Sun, Xinwei; Vøllestad, Einar; Rørvik, Per Martin; Prodinger, Sebastian; Kalantzopoulos, Giorgios N.; Chatzitakis, Athanasios; Norby, Truls (Peer reviewed; Journal article, 2023)
      CeO2 surfaces play decisive roles in heterogeneous catalysis of important processes. Here, we investigate adsorption and dissociation of water and migration of protons on internal surfaces of nanoscopic porous CeO2. Sorption ...