Phase transformation and interface crystallography between TiO₂ and different Ti_nO_2n−1 phases

Abstract

Magnéli phase titanium oxide (TinO2n-1, 4≤n≤10) has wide application prospects in energy storage, catalysis and other fields. During the preparation of TinO2n-1 phase from TiO2 by carbothermal reduction reaction (CRR),...

Improving the control of the electroforming process in oxide-based memristive devices by X-ray nanopatterning

“…40 This kind of defect has been reported to play an important role in the reduction process of TiO 2 , which can lead to the formation of a variety of Magneli phases with the general stoichiometry Ti n O 2nÀ1 . 41,42 Indeed, according to the literature the process starts with the formation of some V O , which can be hosted in a limited amount into the rutile lattice, then the V O point defects start to aggregate along preferential crystallographic directions forming extended defects, which subsequently can possibly lead to a mixture of Ti n O 2nÀ1 compounds with different n. 43,44 Both experimental results and DFT calculations showed that ordered extended line defects, as the ones observed in Fig. 6B, allow electron conduction mediated by occupied defect states of Ti 3d character, 45,46 in agreement with the results obtained by C-AFM.…”

Anisotropy of the Pressure Effect in the Ti3O5 Phase Transition Process Resolved by Direction-Dependent Interface Propagation

“…9 Interface energies might even influence the stability of polymorphs of a material. 10 Only a few experimental measurements of interface energies 11 and the interface structures 12 have been reported.…”

“…Only a few experimental measurements of interface energies and the interface structures have been reported.…”

A Comprehensive Review on Modification of Titanium Dioxide‐Based Catalysts in Advanced Oxidation Processes for Water Treatment

“…Mechanochemical methods are considered as promising approach for the synthesis of semiconductor-semiconductor composite catalysts to obtain nano-scale powder with homogeneous mixture. [29][30][31][32][33] An overview on these various subjects and a state of the art in relation to these topics are provided in this review as well. In the first section, an overview of the different types of environmental pollution is presented with the occurrence of pharmaceuticals in water resources.…”

“…Furthermore, reducing TiO 2 to sub‐stochiometric Ti n O 2n–1 can be an effective solution to promote the properties of titanium dioxide. Mechanochemical methods are considered as promising approach for the synthesis of semiconductor‐semiconductor composite catalysts to obtain nano‐scale powder with homogeneous mixture [29–33] …”