biostudies-literatureBielan ZNarodowe Centrum NaukiE2763https://www.ebi.ac.uk/biostudies/studies/S-EPMC7345791biostudies-literatureUnknown13(12)Among various methods of improving visible light activity of titanium(IV) oxide, the formation of defects and vacancies (both oxygen and titanium) in the crystal structure of TiO2 is an easy and relatively cheap alternative to improve the photocatalytic activity. In the presented work, visible light active defective TiO2 was obtained by the hydrothermal reaction in the presence of three different oxidizing agents: HIO3, H2O2, and HNO3. Further study on the effect of used oxidant and calcination temperature on the physicochemical and photocatalytic properties of defective TiO2 was performed. Obtained nanostructures were characterized by X-ray diffractometry (XRD), specific surface area (BET) measurements, UV-Vis diffuse reflectance spectroscopy (DR-UV/Vis), photoluminescence spectroscopy (PMaterials (Basel, Switzerland)Preparation and Characterization of Defective TiO2. The Effect of the Reaction Environment on Titanium Vacancies Formation.PMC7345791NCN 2018/30/E/ST5/00845NCN 2016/23/D/ST5/01021Bielan ZRyl JZielinska-Jurek ADudziak SSulowska APelczarski DfalsePreparation and Characterization of Defective TiO2. The Effect of the Reaction Environment on Titanium Vacancies Formation.Among various methods of improving visible light activity of titanium(IV) oxide, the formation of defects and vacancies (both oxygen and titanium) in the crystal structure of TiO2 is an easy and relatively cheap alternative to improve the photocatalytic activity. In the presented work, visible light active defective TiO2 was obtained by the hydrothermal reaction in the presence of three different oxidizing agents: HIO3, H2O2, and HNO3. Further study on the effect of used oxidant and calcination temperature on the physicochemical and photocatalytic properties of defective TiO2 was performed. Obtained nanostructures were characterized by X-ray diffractometry (XRD), specific surface area (BET) measurements, UV-Vis diffuse reflectance spectroscopy (DR-UV/Vis), photoluminescence spectroscopy (P2020-01-01T00:00:00Z2020 Jun2025-04-26T08:12:36.839Z2025-04-06T12:37:01.422ZS-EPMC73457913257082110.3390/ma13122763