Giamper Escobar Cano, Merle Wellmann, Frank Steinbach, Moritz Thiem, Wenjie Xie, Anke Weidenkaff, Armin Feldhoff
{"title":"Enhanced Performance of La2NiO4+δ Oxygen-Transporting Membranes Using Crystal Facet Engineering via Microemulsion-Based Synthesis","authors":"Giamper Escobar Cano, Merle Wellmann, Frank Steinbach, Moritz Thiem, Wenjie Xie, Anke Weidenkaff, Armin Feldhoff","doi":"10.1021/acs.chemmater.4c01570","DOIUrl":null,"url":null,"abstract":"La<sub>2</sub>NiO<sub>4+δ</sub> nanorods, synthesized via reverse microemulsion─a crystal facet engineering method─served as building blocks for developing oxygen transport membranes. Comparisons were drawn with ceramic membranes derived from commercial La<sub>2</sub>NiO<sub>4+δ</sub> nanoparticles. The membrane manufacturing process involved either conventional sintering or the field-assisted sintering technique/spark plasma sintering. The microstructure analysis of the initial powders and the resulting ceramics was thoroughly assessed by X-ray diffraction, scanning and transmission electron microscopy as well as energy-dispersive X-ray spectroscopy. As a consequence of the reaction conditions, the nanorods possess an orthorhombic crystal structure, with LaOBr present as a minor phase. Furthermore, the surface structure of the La<sub>2</sub>NiO<sub>4+δ</sub> nanorods was discerned via selected area electron diffraction, revealing a composition of (001)<sub>o</sub>-type and (1<i></i><span style=\"color: inherit;\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">&#xAF;</mo></mover></math>' role=\"presentation\" style=\"position: relative;\" tabindex=\"0\"><nobr aria-hidden=\"true\"><span style=\"width: 0.571em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px; font-size: 110%;\"><span style=\"position: absolute; clip: rect(1.139em, 1000.4em, 2.332em, -999.997em); top: -2.156em; left: 0em;\"><span><span><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1000.4em, 4.151em, -999.997em); top: -3.974em; left: 0em;\"><span style=\"font-family: STIXMathJax_Main;\">1</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; clip: rect(3.185em, 1000.34em, 3.582em, -999.997em); top: -4.259em; left: 0.06em;\"><span style=\"font-family: STIXMathJax_Main;\">¯</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span></span></span></span><span style=\"display: inline-block; width: 0px; height: 2.162em;\"></span></span></span><span style=\"display: inline-block; overflow: hidden; vertical-align: -0.059em; border-left: 0px solid; width: 0px; height: 1.066em;\"></span></span></nobr><span role=\"presentation\"><math display=\"inline\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></span></span><script type=\"math/mml\"><math display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></script>0)<sub>o</sub>-type facets on the sides and (110)<sub>o</sub>-type facets at the end, with additional facets observed between these surfaces. Among the sintering techniques, spark plasma sintering demonstrated superior performance, when applied to La<sub>2</sub>NiO<sub>4+δ</sub> nanorods, as it effectively preserved their rod-like nanostructure during the sintering process. The resulting nanorod-derived La<sub>2</sub>NiO<sub>4+δ</sub> ceramics exhibited excellent oxygen permeation, largely due to the large proportion of orthorhombic (1<i></i><span style=\"color: inherit;\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">&#xAF;</mo></mover></math>' role=\"presentation\" style=\"position: relative;\" tabindex=\"0\"><nobr aria-hidden=\"true\"><span style=\"width: 0.571em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px; font-size: 110%;\"><span style=\"position: absolute; clip: rect(1.139em, 1000.4em, 2.332em, -999.997em); top: -2.156em; left: 0em;\"><span><span><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1000.4em, 4.151em, -999.997em); top: -3.974em; left: 0em;\"><span style=\"font-family: STIXMathJax_Main;\">1</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; clip: rect(3.185em, 1000.34em, 3.582em, -999.997em); top: -4.259em; left: 0.06em;\"><span style=\"font-family: STIXMathJax_Main;\">¯</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span></span></span></span><span style=\"display: inline-block; width: 0px; height: 2.162em;\"></span></span></span><span style=\"display: inline-block; overflow: hidden; vertical-align: -0.059em; border-left: 0px solid; width: 0px; height: 1.066em;\"></span></span></nobr><span role=\"presentation\"><math display=\"inline\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></span></span><script type=\"math/mml\"><math display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></script>0)<sub>o</sub>-type surfaces in the rod-shaped grains, which correspond to tetragonal (010)<sub>t</sub> and (0<i></i><span style=\"color: inherit;\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">&#xAF;</mo></mover></math>' role=\"presentation\" style=\"position: relative;\" tabindex=\"0\"><nobr aria-hidden=\"true\"><span style=\"width: 0.571em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px; font-size: 110%;\"><span style=\"position: absolute; clip: rect(1.139em, 1000.4em, 2.332em, -999.997em); top: -2.156em; left: 0em;\"><span><span><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1000.4em, 4.151em, -999.997em); top: -3.974em; left: 0em;\"><span style=\"font-family: STIXMathJax_Main;\">1</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; clip: rect(3.185em, 1000.34em, 3.582em, -999.997em); top: -4.259em; left: 0.06em;\"><span style=\"font-family: STIXMathJax_Main;\">¯</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span></span></span></span><span style=\"display: inline-block; width: 0px; height: 2.162em;\"></span></span></span><span style=\"display: inline-block; overflow: hidden; vertical-align: -0.059em; border-left: 0px solid; width: 0px; height: 1.066em;\"></span></span></nobr><span role=\"presentation\"><math display=\"inline\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></span></span><script type=\"math/mml\"><math display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></script>0)<sub>t</sub> surfaces. The (1<i></i><span style=\"color: inherit;\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">&#xAF;</mo></mover></math>' role=\"presentation\" style=\"position: relative;\" tabindex=\"0\"><nobr aria-hidden=\"true\"><span style=\"width: 0.571em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px; font-size: 110%;\"><span style=\"position: absolute; clip: rect(1.139em, 1000.4em, 2.332em, -999.997em); top: -2.156em; left: 0em;\"><span><span><span style=\"display: inline-block; position: relative; width: 0.514em; height: 0px;\"><span style=\"position: absolute; clip: rect(3.128em, 1000.4em, 4.151em, -999.997em); top: -3.974em; left: 0em;\"><span style=\"font-family: STIXMathJax_Main;\">1</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span><span style=\"position: absolute; clip: rect(3.185em, 1000.34em, 3.582em, -999.997em); top: -4.259em; left: 0.06em;\"><span style=\"font-family: STIXMathJax_Main;\">¯</span><span style=\"display: inline-block; width: 0px; height: 3.98em;\"></span></span></span></span></span><span style=\"display: inline-block; width: 0px; height: 2.162em;\"></span></span></span><span style=\"display: inline-block; overflow: hidden; vertical-align: -0.059em; border-left: 0px solid; width: 0px; height: 1.066em;\"></span></span></nobr><span role=\"presentation\"><math display=\"inline\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></span></span><script type=\"math/mml\"><math display=\"inline\"><mover><mi mathvariant=\"normal\">1</mi><mo accent=\"true\" stretchy=\"false\">¯</mo></mover></math></script>0)<sub>o</sub>-type facets facilitated the oxygen surface exchange, leading to improved oxygen permeation fluxes between 1023 and 1123 K compared to membranes derived from nanoparticles.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry of Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.chemmater.4c01570","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
La2NiO4+δ nanorods, synthesized via reverse microemulsion─a crystal facet engineering method─served as building blocks for developing oxygen transport membranes. Comparisons were drawn with ceramic membranes derived from commercial La2NiO4+δ nanoparticles. The membrane manufacturing process involved either conventional sintering or the field-assisted sintering technique/spark plasma sintering. The microstructure analysis of the initial powders and the resulting ceramics was thoroughly assessed by X-ray diffraction, scanning and transmission electron microscopy as well as energy-dispersive X-ray spectroscopy. As a consequence of the reaction conditions, the nanorods possess an orthorhombic crystal structure, with LaOBr present as a minor phase. Furthermore, the surface structure of the La2NiO4+δ nanorods was discerned via selected area electron diffraction, revealing a composition of (001)o-type and (11¯0)o-type facets on the sides and (110)o-type facets at the end, with additional facets observed between these surfaces. Among the sintering techniques, spark plasma sintering demonstrated superior performance, when applied to La2NiO4+δ nanorods, as it effectively preserved their rod-like nanostructure during the sintering process. The resulting nanorod-derived La2NiO4+δ ceramics exhibited excellent oxygen permeation, largely due to the large proportion of orthorhombic (11¯0)o-type surfaces in the rod-shaped grains, which correspond to tetragonal (010)t and (01¯0)t surfaces. The (11¯0)o-type facets facilitated the oxygen surface exchange, leading to improved oxygen permeation fluxes between 1023 and 1123 K compared to membranes derived from nanoparticles.
期刊介绍:
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.