The Anatase-to-Rutile Phase Transition in Highly Oriented Nanoparticles Array of Titania with Photocatalytic Response Changes

Olga Boytsova; Irina Zhukova; Artem Tatarenko; Tatiana Shatalova; Artemii Beiltiukov; Andrei Eliseev; Alexey Sadovnikov

doi:10.3390/nano12244418

The Anatase-to-Rutile Phase Transition in Highly Oriented Nanoparticles Array of Titania with Photocatalytic Response Changes

Nanomaterials (Basel). 2022 Dec 11;12(24):4418. doi: 10.3390/nano12244418.

Authors

Olga Boytsova^{1

2}, Irina Zhukova¹, Artem Tatarenko¹, Tatiana Shatalova², Artemii Beiltiukov³, Andrei Eliseev¹, Alexey Sadovnikov^{4

5}

Affiliations

¹ Department of Materials Science, Lomonosov Moscow State University, Building 73, Leninskie Gory 1, Moscow 119991, Russia.
² Department of Chemistry, Lomonosov Moscow State University, Building 3, Leninskie Gory 1, Moscow 119991, Russia.
³ Udmurt Federal Research Center of UB RAS, T. Baramzina Str. 34, Izhevsk 426067, Russia.
⁴ Kurnakov Institute of General and Inorganic Chemistry RAS, Leninskii Prosp. 31, Moscow 119071, Russia.
⁵ Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii Prosp. 29, Moscow 119991, Russia.

Abstract

An array of highly oriented anatase nanoparticles was successfully prepared from NH₄TiOF₃ with the assistance of polyetheleneglycol-400 at 450 °C. The study showed the stability of obtained layered TiO₂-anatase close to 1200 °C. This research confirmed for the first time that the transition of mesocrystalline anatase to the rutile phase occurs between 1000 °C and 1200 °C, which is more than 400 °C higher than the transition of bulk TiO₂ due to the used precursor. A small quantity of K-phase nanowhiskers, which issued after 800 °C in the composite based on TiO₂, stimulated a fourfold increase in photocatalytic performance. This study offers a new approach to the construction and preparation of effective nanocrystalline photocatalyst.

Keywords: anatase; mesocrystal; nanophotocatalyst; phase transition; rutile.

Grants and funding

22-29-00963/Russian Science Foundation