Photoelectrochemically Active N‐Adsorbing Ultrathin TiO2 Layers for Water‐Splitting Applications Prepared by Pyrolysis of Oleic Acid on Iron Oxide Nanoparticle Surfaces under Nitrogen Environment

Ahmet Kertmen; Enzo Barbe; Mariusz Szkoda; Katarzyna Siuzdak; Višnja Babačić; Pau Torruella; Igor Iatsunskyi; Michał Kwiatkowski; Karol Rytel; Sonia Estrade; Peiró Francesca; Jurga Stefan; Li Yanguang; Emerson Coy

doi:10.1002/admi.201801286

Photoelectrochemically Active N‐Adsorbing Ultrathin TiO2 Layers for Water‐Splitting Applications Prepared by Pyrolysis of Oleic Acid on Iron Oxide Nanoparticle Surfaces under Nitrogen Environment

Abstract

Highly performing photocatalytic surfaces are nowadays highly desirable in energy fields, mainly due to their applicability as photo water‐splitting electrodes. One of the current challenges in this field is the production of highly controllable and efficient photoactive surfaces on many substrates. Atomic layer deposition has allowed the deposition of photoactive TiO2 layers over wide range of materials and surfaces. However, nitrogen doping of the growing layers, a highly effective way of controlling the absorption edges of photoactive surfaced, is still a challenging task. Here, the preparation of hierarchical nanostructured surfaces based on Langmuir–Schaefer and atomic layer deposition is proposed. Ultrathin TiO2 layers that are photoelectrochemically active in water splitting are prepared by a relatively low‐temperature catalytic decomposition of oleic acid capping layers of iron oxide nanoparticles and the posterior nitrogen adsorption. The results evidence that simple N‐adsorption is sufficient to narrow the bandgap of TiO2 layers that is equal to bandgap narrowing (0.12 eV) observed for substitutionally N‐doped materials. The photocatalytic activity tests of the prepared surfaces in water‐splitting applications demonstrate ≈90% increase in the activity of the N‐adsorbing TiO2 layers.

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Authors (14)

Ahmet Kertmen
Enzo Barbe
- Uniwersytet Adama Mickewicza
Mariusz Szkoda dr inż.
Katarzyna Siuzdak
- IMP PAN Gdańsk
Višnja Babačić
- Uniwersytet Adama Mickewicza
Pau Torruella
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, , 08028 Barcelona, Spain
Igor Iatsunskyi
- Uniwersytet Adama Mickewicza
Michał Kwiatkowski
- Politechnika Poznańska
Karol Rytel
- Politechnika Poznańska
Sonia Estrade
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, , 08028 Barcelona, Spain
Peiró Francesca
- Institute of Nanoscience and Nanotechnology (IN2UB), Universitat de Barcelona, , 08028 Barcelona, Spain
Jurga Stefan Profesor
- Uniwersytet Adama Mickiewicza
Li Yanguang
- Institute of Functional Nano and Soft Materials, Jiangsu Key Laboratory for Carbon‐Based Functional Materials and Devices, Soochow University, 215123 Suzhou, China
Emerson Coy
- Uniwersytet Adama Mickiewicza

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: Advanced Materials Interfaces no. 6, edition 3, pages 1 - 10,
ISSN: 2196-7350
Language:: English
Publication year:: 2019
Bibliographic description:: Kertmen A., Barbe E., Szkoda M., Siuzdak K., Babačić V., Torruella P., Iatsunskyi I., Kwiatkowski M., Rytel K., Estrade S., Francesca P., Stefan J., Yanguang L., Coy E.: Photoelectrochemically Active N‐Adsorbing Ultrathin TiO2 Layers for Water‐Splitting Applications Prepared by Pyrolysis of Oleic Acid on Iron Oxide Nanoparticle Surfaces under Nitrogen Environment// Advanced Materials Interfaces. -Vol. 6, iss. 3 (2019), s.1-10
DOI:: Digital Object Identifier (open in new tab) 10.1002/admi.201801286
Verified by:: Gdańsk University of Technology