Details
| Original language | English |
|---|---|
| Article number | 2411251 |
| Journal | Advanced science |
| Volume | 12 |
| Issue number | 12 |
| Publication status | Published - 27 Feb 2025 |
Abstract
Textured Nd2NiO4+δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd2NiO4+δ bulk membrane achieves the highest oxygen permeation fluxes between 1023–1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd2NiO4+δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.
Keywords
- anisotropy, magnetic orientation, neodymium nickel oxide, oxygen transport membranes, Ruddlesden–Popper oxides, textured ceramics
ASJC Scopus subject areas
- Medicine(all)
- Medicine (miscellaneous)
- Chemical Engineering(all)
- General Chemical Engineering
- Materials Science(all)
- General Materials Science
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry, Genetics and Molecular Biology (miscellaneous)
- Engineering(all)
- General Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Advanced science, Vol. 12, No. 12, 2411251, 27.02.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tailoring the Anisotropic Oxygen Transport Properties in Bulk Ceramic Membranes Based on a Ruddlesden–Popper Oxide by Applying Magnetic Fields
AU - Escobar Cano, Giamper
AU - Matsuda, Motohide
AU - Zhao, Zhijun
AU - Steinbach, Frank
AU - Breidenstein, Bernd
AU - Petersen, Hilke
AU - Graff, Andreas
AU - Widenmeyer, Marc
AU - Weidenkaff, Anke
AU - Feldhoff, Armin
N1 - Publisher Copyright: © 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH.
PY - 2025/2/27
Y1 - 2025/2/27
N2 - Textured Nd2NiO4+δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd2NiO4+δ bulk membrane achieves the highest oxygen permeation fluxes between 1023–1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd2NiO4+δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.
AB - Textured Nd2NiO4+δ bulk ceramic membranes are fabricated via slip casting in a 0.9 T magnetic field generated by neodymium magnets. This process aligns the oxide grains with their easy-magnetization c-axis parallel to the applied magnetic field. Depending on the magnetic field's direction relative to the slip casting, grains orient either with their a,b-plane or c-axis parallel to the normal direction of the disk-shaped ceramic, thus aligning with the oxygen permeation direction. Without the magnetic field, a non-textured bulk membrane is formed. The microstructure and texture of the ceramic membranes are meticulously analyzed using advanced techniques, including X-ray diffraction, scanning and transmission electron microscopy, as well as related methods. Evaluation of the texturing effect on the oxygen permeation performance shows that the a,b-plane textured Nd2NiO4+δ bulk membrane achieves the highest oxygen permeation fluxes between 1023–1223 K. Additionally, it demonstrates impressive CO₂ stability, maintaining effective performance for at least 140 h due to preferential oxygen transport along the a,b-plane. These characteristics make Nd2NiO4+δ an auspicious material for industrial applications as an oxygen transport membrane, outperforming more susceptible perovskite-based materials. Magnetic alignment thus proves to be an effective method for achieving membrane texturing, enabling precise regulation of oxygen transport properties.
KW - anisotropy
KW - magnetic orientation
KW - neodymium nickel oxide
KW - oxygen transport membranes
KW - Ruddlesden–Popper oxides
KW - textured ceramics
UR - http://www.scopus.com/inward/record.url?scp=85216736033&partnerID=8YFLogxK
U2 - 10.1002/advs.202411251
DO - 10.1002/advs.202411251
M3 - Article
AN - SCOPUS:85216736033
VL - 12
JO - Advanced science
JF - Advanced science
SN - 2198-3844
IS - 12
M1 - 2411251
ER -