Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2
Abstract This paper describes solid solutions in the quasibinary oxide system iridium‐titanium IrO2−TiO2 with rutile and anatase crystal structures. Based on X‐ray diffraction evaluations using Rietveld refinements, changes of lattice parameters were determined within the composition series of 0–100...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-07-01
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| Series: | ChemistryOpen |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/open.202300032 |
| _version_ | 1797772324787716096 |
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| author | Dr. Daniel Reichert Prof. Dr. Klaus Stöwe |
| author_facet | Dr. Daniel Reichert Prof. Dr. Klaus Stöwe |
| author_sort | Dr. Daniel Reichert |
| collection | DOAJ |
| description | Abstract This paper describes solid solutions in the quasibinary oxide system iridium‐titanium IrO2−TiO2 with rutile and anatase crystal structures. Based on X‐ray diffraction evaluations using Rietveld refinements, changes of lattice parameters were determined within the composition series of 0–100 mol % iridium. These changes prove the existence of a complete solid solution series in the rutile structure type. The solubility limit for iridium in the anatase lattice was found to be 6.0(8) mol % iridium for the underlying sol‐gel process. In addition, iridium is a promoter for the conversion from anatase to rutile type. Furthermore, the X‐ray diffraction results of a calcination temperature series for the composition with 5 mol % iridium are shown, which confirm the findings of the composition series and allow conclusions on the phase segregation behavior. The results are complemented by 2‐point conductivity measurements at different pressures in a piston press to investigate the question of the conductivity mechanism. |
| first_indexed | 2024-03-12T21:50:26Z |
| format | Article |
| id | doaj.art-ac057faa98f6423fab8860e295def749 |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-03-12T21:50:26Z |
| publishDate | 2023-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-ac057faa98f6423fab8860e295def7492023-07-26T04:52:28ZengWiley-VCHChemistryOpen2191-13632023-07-01127n/an/a10.1002/open.202300032Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2Dr. Daniel Reichert0Prof. Dr. Klaus Stöwe1Institute of Chemistry Faculty of Natural Sciences Chemnitz University of Technology Straße der Nationen 62 09111 Chemnitz GermanyInstitute of Chemistry Faculty of Natural Sciences Chemnitz University of Technology Straße der Nationen 62 09111 Chemnitz GermanyAbstract This paper describes solid solutions in the quasibinary oxide system iridium‐titanium IrO2−TiO2 with rutile and anatase crystal structures. Based on X‐ray diffraction evaluations using Rietveld refinements, changes of lattice parameters were determined within the composition series of 0–100 mol % iridium. These changes prove the existence of a complete solid solution series in the rutile structure type. The solubility limit for iridium in the anatase lattice was found to be 6.0(8) mol % iridium for the underlying sol‐gel process. In addition, iridium is a promoter for the conversion from anatase to rutile type. Furthermore, the X‐ray diffraction results of a calcination temperature series for the composition with 5 mol % iridium are shown, which confirm the findings of the composition series and allow conclusions on the phase segregation behavior. The results are complemented by 2‐point conductivity measurements at different pressures in a piston press to investigate the question of the conductivity mechanism.https://doi.org/10.1002/open.202300032conductivity measurementsmixed metal oxidesRietveld refinementsol-gel synthesesX-ray diffraction |
| spellingShingle | Dr. Daniel Reichert Prof. Dr. Klaus Stöwe Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 ChemistryOpen conductivity measurements mixed metal oxides Rietveld refinement sol-gel syntheses X-ray diffraction |
| title | Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 |
| title_full | Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 |
| title_fullStr | Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 |
| title_full_unstemmed | Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 |
| title_short | Sol‐Gel‐Syntheses and Structural as well as Electrical Characterizations of Anatase‐ and Rutile‐Type Solid Solutions in the System IrO2−TiO2 |
| title_sort | sol gel syntheses and structural as well as electrical characterizations of anatase and rutile type solid solutions in the system iro2 tio2 |
| topic | conductivity measurements mixed metal oxides Rietveld refinement sol-gel syntheses X-ray diffraction |
| url | https://doi.org/10.1002/open.202300032 |
| work_keys_str_mv | AT drdanielreichert solgelsynthesesandstructuralaswellaselectricalcharacterizationsofanataseandrutiletypesolidsolutionsinthesystemiro2tio2 AT profdrklausstowe solgelsynthesesandstructuralaswellaselectricalcharacterizationsofanataseandrutiletypesolidsolutionsinthesystemiro2tio2 |