Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation
Oxygen permeation membranes (OPMs) are regarded as promising technology for pure oxygen production. Among various materials for OPMs, perovskite oxides with mixed electron and oxygen-ion (e<sup>−</sup>/O<sup>2−</sup>) conducting capability have attracted particular interest b...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/9/831 |
| _version_ | 1827658945001422848 |
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| author | Zixiang Xu Jian Yu Wei Wang |
| author_facet | Zixiang Xu Jian Yu Wei Wang |
| author_sort | Zixiang Xu |
| collection | DOAJ |
| description | Oxygen permeation membranes (OPMs) are regarded as promising technology for pure oxygen production. Among various materials for OPMs, perovskite oxides with mixed electron and oxygen-ion (e<sup>−</sup>/O<sup>2−</sup>) conducting capability have attracted particular interest because of the high O<sup>2−</sup> conductivity and structural/compositional flexibility. However, BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>-based perovskites as one of the most investigated OPMs suffer from low oxygen permeation rate and inferior structural stability in CO<sub>2</sub>-containing atmospheres. Herein, zirconium and yttrium co-doped BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> (BaCo<sub>1−2x</sub>Zr<sub>x</sub>Y<sub>x</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>, x = 0, 0.05, 0.1 and 0.15) are designed and developed for efficient and stable OPMs by stabilizing the crystal structure of BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>. With the increased Zr/Y co-doping content, the crystal structural stability of doped BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> is much improved although the oxygen permeation flux is slightly reduced. After optimizing the co-doping amount, BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> displays both a high rate and superior durability for oxygen permeation due to the well-balanced grain size, oxygen-ion mobility, crystal structural stability, oxygen vacancy concentration and surface exchange/bulk diffusion capability. Consequently, the BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> membrane delivers a high oxygen permeation rate of 1.3 mL min<sup>−1</sup> cm<sup>−2</sup> and relatively stable operation at 800 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula>C for 100 h. This work presents a promising co-doping strategy to boost the performance of perovskite-based OPMs, which can promote the industrial application of OPM technology. |
| first_indexed | 2024-03-09T23:12:39Z |
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| id | doaj.art-63258d6a93cf4072a64dc4f2b84e196a |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T23:12:39Z |
| publishDate | 2022-08-01 |
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| spelling | doaj.art-63258d6a93cf4072a64dc4f2b84e196a2023-11-23T17:42:06ZengMDPI AGMembranes2077-03752022-08-0112983110.3390/membranes12090831Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen PermeationZixiang Xu0Jian Yu1Wei Wang2State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaOxygen permeation membranes (OPMs) are regarded as promising technology for pure oxygen production. Among various materials for OPMs, perovskite oxides with mixed electron and oxygen-ion (e<sup>−</sup>/O<sup>2−</sup>) conducting capability have attracted particular interest because of the high O<sup>2−</sup> conductivity and structural/compositional flexibility. However, BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>-based perovskites as one of the most investigated OPMs suffer from low oxygen permeation rate and inferior structural stability in CO<sub>2</sub>-containing atmospheres. Herein, zirconium and yttrium co-doped BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> (BaCo<sub>1−2x</sub>Zr<sub>x</sub>Y<sub>x</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>, x = 0, 0.05, 0.1 and 0.15) are designed and developed for efficient and stable OPMs by stabilizing the crystal structure of BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub>. With the increased Zr/Y co-doping content, the crystal structural stability of doped BaCoO<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> is much improved although the oxygen permeation flux is slightly reduced. After optimizing the co-doping amount, BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> displays both a high rate and superior durability for oxygen permeation due to the well-balanced grain size, oxygen-ion mobility, crystal structural stability, oxygen vacancy concentration and surface exchange/bulk diffusion capability. Consequently, the BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3−<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">δ</mi></semantics></math></inline-formula></sub> membrane delivers a high oxygen permeation rate of 1.3 mL min<sup>−1</sup> cm<sup>−2</sup> and relatively stable operation at 800 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>∘</mo></msup></semantics></math></inline-formula>C for 100 h. This work presents a promising co-doping strategy to boost the performance of perovskite-based OPMs, which can promote the industrial application of OPM technology.https://www.mdpi.com/2077-0375/12/9/831oxygen permeationperovskite oxidesco-dopingstructural stabilityBaCoO<sub>3-δ</sub> |
| spellingShingle | Zixiang Xu Jian Yu Wei Wang Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation Membranes oxygen permeation perovskite oxides co-doping structural stability BaCoO<sub>3-δ</sub> |
| title | Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation |
| title_full | Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation |
| title_fullStr | Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation |
| title_full_unstemmed | Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation |
| title_short | Zirconium and Yttrium Co-Doped BaCo<sub>0.8</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>O<sub>3-<i>δ</i></sub>: A New Mixed-Conducting Perovskite Oxide-Based Membrane for Efficient and Stable Oxygen Permeation |
| title_sort | zirconium and yttrium co doped baco sub 0 8 sub zr sub 0 1 sub y sub 0 1 sub o sub 3 i δ i sub a new mixed conducting perovskite oxide based membrane for efficient and stable oxygen permeation |
| topic | oxygen permeation perovskite oxides co-doping structural stability BaCoO<sub>3-δ</sub> |
| url | https://www.mdpi.com/2077-0375/12/9/831 |
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