Formation of ZrTiO4 under Hydrothermal Conditions

• Published in: Russian journal of inorganic chemistry Vol. 67; no. 6; pp. 830 - 838
• Main Authors: Bachina, A. K., Almjasheva, O. V., Popkov, V. I.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.06.2022; Springer Nature B.V
• Subjects: Anatase; Chemistry; Chemistry and Materials Science; Composition; Crystallites; High temperature; Hydrothermal treatment; Hydroxides; Inorganic Chemistry; Lead oxides; Nanocrystals; Solid solutions; Synthesis and Properties of Inorganic Compounds; Titanium dioxide; Zirconium dioxide; coprecipitation; ZrTiO; hydrothermal synthesis; nanocrystals
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S003602362206002X

—The formation of nanocrystals in the ZrO 2 –TiO 2 –H 2 O system during isothermal (240°C) treatment of coprecipitated hydroxides under hydrothermal conditions has been studied. The formation of solid solutions based on monoclinic ZrO 2 , anatase (TiO 2 ), and a high-temperature disordered phase of variable composition Zr x Ti (1 – x ) O 4 with a scrutinyite (α-PbO 2 ) structure has been demonstrated. The average size of Zr x Ti (1 – x ) O 4 crystallites is 16 ± 2 nm. The kinetic features of phase formation in the ZrO 2 –TiO 2 –H 2 O system have been studied. It has been shown that the phase of variable composition Zr x Ti (1 – x ) O 4 is metastable and, with increasing hydrothermal treatment duration, decomposes into solid solutions based on monoclinic ZrO 2 and anatase.