Synthesis of Nanosized Anatase by Hydrolysis of Tetrabutoxytitanium at Various pH Values
| Autor: | V. V. Viktorov, S. A. Kulikovskikh, Yu. I. Ryabkov, Dmitry A. Zherebtsov, I. N. Kovalev, E. A. Belaya |
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| Rok vydání: | 2019 |
| Předmět: |
Anatase
Materials science Precipitation (chemistry) Materials Science (miscellaneous) Oxide chemistry.chemical_element law.invention Inorganic Chemistry chemistry.chemical_compound Adsorption chemistry law Calcination Crystallite Physical and Theoretical Chemistry Powder diffraction Nuclear chemistry Titanium |
| Zdroj: | Russian Journal of Inorganic Chemistry. 64:165-169 |
| ISSN: | 1531-8613 0036-0236 |
| DOI: | 10.1134/s0036023619020220 |
| Popis: | Hydrolysis of water-ethanol solutions of tetrabutoxytitanium (TBT) in the presence of a chelating agent at various pH values and 100°C yielded nanosized anatase or titanium oxyhydrate. When precipitation occurred at pH of 0.8–8.6, anatase was formed; its crystallite size after calcination at 400°C was 4.8–7.1 nm. Precipitation at pH 10.5–12.7 yielded a poorly crystallized oxyhydrate phase, which converted, after being calcined at 400°C, to a mixture of an oxide phase (unidentifiable by X-rays) and anatase having crystallite sizes of 41–42 nm. Scanning electron microscopy verified the crystallite size determined by X-ray powder diffraction. Benzene adsorption by the prepared oxide materials decayed rapidly from 10 to 0.5 g/100 g adsorbent as pH in the solutions used in the synthesis increased. |
| Databáze: | OpenAIRE |
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