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Influence of Inorganic Bases on the Structure of Titanium Dioxide-Based Microsheets
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SYSNO ASEP 0532239 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of Inorganic Bases on the Structure of Titanium Dioxide-Based Microsheets Author(s) Svora, Petr (UACH-T) SAI
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Pližingrová, Eva (UACH-T) SAI, ORCID
Komárková, Bára (UACH-T) RID, SAI, ORCID
Svorová Pawełkowicz, Sylwia (UACH-T) RID, ORCID, SAI
Murafa, Nataliya (UACH-T) RID, SAI
Maříková, Monika (UACH-T) SAI, RID
Smržová, Darina (UACH-T) ORCID, SAI, RID
Wagner, B. (PL)
Machálková, Aneta (UACH-T) SAI, ORCID, RID
Bezdička, Petr (UACH-T) SAI, RID, ORCIDSource Title ACS Omega. - : American Chemical Society - ISSN 2470-1343
Roč. 5, č. 37 (2020), s. 23703-23717Number of pages 15 s. Language eng - English Country US - United States Keywords Oxides ; Anions ; Minerals ; Oscillation Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects GA18-26297S GA ČR - Czech Science Foundation (CSF) LM2018124 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UACH-T - RVO:61388980 UT WOS 000575417400022 EID SCOPUS 85092554496 DOI 10.1021/acsomega.0c02570 Annotation Laboratory synthesis of microsheets of titanium dioxide from titanyl sulfate involves the use of ammonia solution, whereas another inorganic base is most likely to be employed at the industrial level, as ammonia is a toxic agent and therefore should be avoided according to European Union (EU) regulations. Selected nontoxic bases such as sodium, potassium, and lithium hydroxides have been tested as an alternative to ammonia solution to obtain amorphous and crystalline TiO2-based microsheets. The final products obtained at each step of the procedure (samples lyophilized and annealed at 230 and 800 °C) were analyzed with electron and atomic force microscopy, X-ray powder diffraction, thermal analysis, and Fourier transform infrared (FTIR) and Raman spectroscopies to determine their morphology and phase composition. The differences in the morphology of the obtained products were described in detail as well as phase and structural composition throughout the process. It was found that, in the last step of the synthesis, microsheets annealed at 800 °C were built of small rods and oval or platy crystalline particles depending on the base used. The temperature of formation of anatase, rutile, and alkali-metal titanates in correlation with the ionic radius of the alkali metal present in the sample was discussed. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0311764
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