Photocatalytic activity and luminescent properties of Y, Eu, Tb, Sm and Er-doped ZrO<SUB align="right">2 nanoparticles obtained by hydrothermal method

Biological effect of zirconium dioxide-based nanoparticles

“…1). Such ratio of structural types for zirconium dioxide nanoparticles, being formed under the conditions of hydrothermal processing, had also been noted earlier [23,28,29,38]. The introduction of 1 mol.% Eu 2 O 3 under hydrothermal conditions leads to the formation of zirconium dioxide-based nanocrystals of only tetragonal modification (Fig.…”

“…The possibility for such structure to appear can be traced in the outcomes of the works [39], which show that the structures of 'core-shell' type are formed when a synthesis is taking place, under analogous conditions, of the nanoparticles, which are based on the solid solutions ZrO 2 (Y 2 O 3 ), ZrO 2 (Gd 2 O 3 ) that are similar in chemical nature to ZrO 2 (Eu 2 O 3 ). Further confirmation was given by the results of the work [38], dedicated to the analysis of luminescent properties of ZrO 2 (Eu 2 O 3 ), in which a conclusion is drawn about the partial localization of europium oxide on the surface of nanoparticles. In connection with the obtained data, it can be concluded that it is the surface molecules of zirconium dioxide that possess proliferative activity, and the surface, enriched with europium oxide is biologically inert in this respect.…”

Luminescence of Eu3+ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles

“…Nanoparticles of solid solutions of ZrO 2 ‐EuO 1.5 with the ratio of 98:2 and 90:10 mol% were obtained by preliminary precipitation of the ZrO(OH) 2 ‐Eu(OH) 3 composition from 0.5 M solutions of ZrOCl 2 and EuCl 3 , followed by their dehydration under hydrothermal conditions …”

The influence of chemical prehistory on the structure, photoluminescent properties, surface and biological characteristics of Zr0.98Eu0.02O1.99 nanophosphors

“…Nanocrystalline zirconia is the most suitable host matrix for the creation of high-performance solid-state light-emitting devices based on Ln 3+ ions due to its high refractive index, the band gap in the range from 4 to 6 eV, transparency in the visible and infrared spectral regions, as well as low frequency of phonons (470 cm −1 ) [6,7]. To date, nanophosphors based on ZrO 2 have been used in LEDs [8], fuel cells [9], solar panels [10], gas sensors [11], and photocatalytic systems [12,13]. The photostability and high lifetime of Ln 3+ (the range of milliseconds) ion radiation in the ZrO 2 biologically-inert matrix made it possible to use such luminescent markers for medical purposes for detecting, visualizing, diagnosing and treating diseases [14][15][16][17].…”