Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent
The synthesis of sodium strontium niobate phases was explored via an ionic liquid (IL), namely 1-ethyl-3-methylimidazolium acetate ((emim)OAc), and a deep eutectic solvent (DES), viz. Imidazole 7:3 choline chloride. Four different crystal compositions were synthesized, two via the use of the IL and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539520300328 |
| _version_ | 1818640312917032960 |
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| author | Omar Gómez Rojas Jason L. Potticary Tadachika Nakayama Simon R. Hall |
| author_facet | Omar Gómez Rojas Jason L. Potticary Tadachika Nakayama Simon R. Hall |
| author_sort | Omar Gómez Rojas |
| collection | DOAJ |
| description | The synthesis of sodium strontium niobate phases was explored via an ionic liquid (IL), namely 1-ethyl-3-methylimidazolium acetate ((emim)OAc), and a deep eutectic solvent (DES), viz. Imidazole 7:3 choline chloride. Four different crystal compositions were synthesized, two via the use of the IL and the remaining via DES assisted syntheses. Those synthesized via the use of the IL belong to the class NaxSr1-xNbO3, with X values X < 0.3, and with crystalline structures assumed to be tetragonal with space group P4/mbm (127). For those synthesized with X values 0.26 < X < 0.3, crystalline refinement established unit cell parameters of a = 5.68 Å, c = 4.01 Å, and average volume of = 129.42 Å3; phases with X values 0.14 < X < 0.25, values of a = 5.69, c = 4.01, and average volume of = 129.38 Å3; and those with X values 0.12 < X < 0.14, values of a = 5.69, c = 4.02, and average volume of = 130.19 Å3. Conversely, the crystalline product obtained via DES assisted synthesis is determined to have the chemical formula Na0·1Sr0·9NbO3. Based on results obtained, the crystalline structure is presumed to be orthorhombic, with space group pnnm (58). The dimensions of this unit cell are a = 32.542 Å, b = 5.665 Å, and c = 3.948 Å, and α = β = γ = 90°, with a total volume of 727.974 Å. The characterization of the new crystal compositions was carried out via powder diffraction, SEM, TEM, EDX, ICP-OES and computational refinement. |
| first_indexed | 2024-12-16T23:09:17Z |
| format | Article |
| id | doaj.art-7a3699c15c934a7b80515cab6980428c |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-12-16T23:09:17Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-7a3699c15c934a7b80515cab6980428c2022-12-21T22:12:27ZengElsevierOpen Ceramics2666-53952020-11-014100032Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solventOmar Gómez Rojas0Jason L. Potticary1Tadachika Nakayama2Simon R. Hall3Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata Prefecture, 940-2188, JapanComplex Functional Materials Group, School of Chemistry, University of Bristol, BS8 1TS, UKNagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata Prefecture, 940-2188, JapanComplex Functional Materials Group, School of Chemistry, University of Bristol, BS8 1TS, UK; Corresponding author.The synthesis of sodium strontium niobate phases was explored via an ionic liquid (IL), namely 1-ethyl-3-methylimidazolium acetate ((emim)OAc), and a deep eutectic solvent (DES), viz. Imidazole 7:3 choline chloride. Four different crystal compositions were synthesized, two via the use of the IL and the remaining via DES assisted syntheses. Those synthesized via the use of the IL belong to the class NaxSr1-xNbO3, with X values X < 0.3, and with crystalline structures assumed to be tetragonal with space group P4/mbm (127). For those synthesized with X values 0.26 < X < 0.3, crystalline refinement established unit cell parameters of a = 5.68 Å, c = 4.01 Å, and average volume of = 129.42 Å3; phases with X values 0.14 < X < 0.25, values of a = 5.69, c = 4.01, and average volume of = 129.38 Å3; and those with X values 0.12 < X < 0.14, values of a = 5.69, c = 4.02, and average volume of = 130.19 Å3. Conversely, the crystalline product obtained via DES assisted synthesis is determined to have the chemical formula Na0·1Sr0·9NbO3. Based on results obtained, the crystalline structure is presumed to be orthorhombic, with space group pnnm (58). The dimensions of this unit cell are a = 32.542 Å, b = 5.665 Å, and c = 3.948 Å, and α = β = γ = 90°, with a total volume of 727.974 Å. The characterization of the new crystal compositions was carried out via powder diffraction, SEM, TEM, EDX, ICP-OES and computational refinement.http://www.sciencedirect.com/science/article/pii/S2666539520300328Ionic liquidDeep eutectic solventMetal oxide |
| spellingShingle | Omar Gómez Rojas Jason L. Potticary Tadachika Nakayama Simon R. Hall Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent Open Ceramics Ionic liquid Deep eutectic solvent Metal oxide |
| title | Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent |
| title_full | Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent |
| title_fullStr | Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent |
| title_full_unstemmed | Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent |
| title_short | Synthesis of new sodium strontium niobates via (emim)OAc ionic liquid and an imidazole:choline chloride deep eutectic solvent |
| title_sort | synthesis of new sodium strontium niobates via emim oac ionic liquid and an imidazole choline chloride deep eutectic solvent |
| topic | Ionic liquid Deep eutectic solvent Metal oxide |
| url | http://www.sciencedirect.com/science/article/pii/S2666539520300328 |
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