Anatase–Rutile Transition of Precipitated Titanium Oxide with Alcohol Rinsing

Fabrication of titania nanowires incorporated paper sheets and study of their optical properties

“…In the commercial anatase TiO 2 , two broad and strong bands at 680 and 509 cm −1 were observed and are due to the Ti O bond stretching modes of the anatase phase. [24][25][26] In the NW sample, three strong bands at 941, 818 and 463 cm −1 were observed. The bands at 941 and 463 cm −1 could be attributed to the rutile phase.…”

“…[24][25][26] However, the bands due to the anatase phase in the TiO 2 NWs shifted in complex manner and are common in many other reports on anatase TiO 2 nanostructures. [24][25][26] The band at 509 cm −1 from the anatase phase may further be obscured in the strong band at 463 cm −1 . Furthermore, the IR bands from the nanostructures are in many cases observed at different wavenumber values compared to bulk powder.…”

Correlation between dispersion properties of TiO2 colloidal sols and photoelectric characteristics of TiO2 films

“…Before the annealing, there were some impurities such as residual organics or nitrate group in 80N and 80N80Y powders. The absorption bands at 1234, 1350-1460, and 1697 cm −1 are related to residual organics in 80N and the N-O stretching mode at 1385 cm −1 originates from the addition of nitric acid during the peptization process [12][13][14][15]. However, the impurities were fully removed after the annealing process and only the hydroxyl group remained on the surface of TiO 2 .…”

Synthesis of biomorphic paper-derived anatase

“…The transition temperature range determined by XRD (872-900 1C) corresponds roughly to that detected by DTA (867-880 1C). The ART of powders prepared by sol-gel occurs at about 600 1C [7,10,31], whereas it is postponed to 800 1C by using biotemplates. Table 1 presents the evolution of crystallite size with calcination temperature, as calculated by the Scherrer equation.…”