Anodic self-organized transparent nanotubular/porous hematite films from Fe thin-films sputtered on FTO and photoelectrochemical water splitting

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• 作者：Lei Wang ; Chong-Yong Lee ; Robin Kirchgeorg ; Ning Liu…
• 关键词：Hematite nanotubular/porous ; Anodization ; Sputtered iron films ; Water splitting
• 刊名：Research on Chemical Intermediates
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：41
• 期：12
• 页码：9333-9341
• 全文大小：964 KB
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• 作者单位：Lei Wang (1)
  Chong-Yong Lee (1)
  Robin Kirchgeorg (1)
  Ning Liu (1)
  Kiyoung Lee (1)
  ?těpán Kment (2)
  Zdeněk Hubi?ka (3)
  Josef Krysa (4)
  Ji?í Olejní?ek (2)
  Martin ?ada (2)
  Radek Zbo?il (2)
  Patrik Schmuki (1) (5)
  
  1. Department of Materials Science and Engineering, University of Erlangen-Nuremberg, WW4-LKO, Martensstrasse 7, 91058, Erlangen, Germany
  2. Regional Centre of Advanced Technologies and Materials, Joint Laboratory of Optics, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
  3. Institute of Physics, Academy of Science of the Czech Republic, Na Slovance 2, 14800, Prague, Czech Republic
  4. Department of Inorganic Technology, Institute of Chemical Technology Prague, Technicka 5, 16628, Prague, Czech Republic
  5. Department of Chemistry, King Abdulaziz University, Jeddah, Saudi Arabia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Physical Chemistry
  Inorganic Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1568-5675

文摘

In the present work, we investigate the self-organized anodic formation of nanotubular/porous hematite structures from Fe thin films on fluorine doped tin oxide (FTO) substrates. We show, for different metal film thicknesses, that transparent layers of an aligned 1D oxide morphology can be grown by complete anodization of sputtered iron films. The nanoporous or nanotubular structures show very different potentials for use as a photoanode for solar water splitting. Best performance under AM 1.5 (100 mW cm?) conditions were found for a nanoporous hematite structure obtained after anodizing a 570-nm-thick iron film and using combined air/Ar annealing to maintain the nanoscale morphology. Keywords Hematite nanotubular/porous Anodization Sputtered iron films Water splitting