Extraction–Pyrolytic Method for TiO2 Polymorphs Production

Abstract

The unique properties and numerous applications of nanocrystalline titanium dioxide (TiO2) are stimulating research on improving the existing and developing new titanium dioxide synthesis methods. In this work, we demonstrate for the first time the possibilities of the extraction–pyrolytic method (EPM) for the production of nanocrystalline TiO2 powders. A titanium-containing precursor (extract) was prepared by liquid–liquid extraction using valeric acid C4H9COOH without diluent as an extractant. Simultaneous thermogravimetric analysis and differential scanning calorimetry (TGA–DSC), as well as the Fourier-transform infrared (FTIR) spectroscopy were used to determine the temperature conditions to fabricate TiO2 powders free of organic impurities. The produced materials were also characterized by X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM). The results showed the possibility of the fabrication of storage-stable liquid titanium (IV)-containing precursor, which provided nanocrystalline TiO2 powders. It was established that the EPM permits the production of both monophase (anatase polymorph or rutile polymorph) and biphase (mixed anatase–rutile polymorphs), impurity-free nanocrystalline TiO2 powders. For comparison, TiO2 powders were also produced by the precipitation method. The results presented in this study could serve as a solid basis for further developing the EPM for the cheap and simple production of nanocrystalline TiO2-based materials in the form of doped nanocrystalline powders, thin films, and composite materials.

Effect of Poly(Titanium Oxide) on the Viscoelastic and Thermophysical Properties of Interpenetrating Polymer Networks

“…Additionally, it is worth noting that the distribution of the inorganic component in the polymer matrix is quite uniform without significant aggregation, which may indicate the presence of the appropriate physicochemical interaction between them. This is especially important for the manufacture of appropriate fluorescent matrices based on TiO 2 , when the latter is doped with a luminescent impurity [65][66][67].…”

Durable Superhydrophobic Coating for Efficient Microplastic Removal

“…1081 cm -1 was assigned to Ti-O-H deformation, while the broad band at ca. 600 cm -1 was assigned to the O-Ti-O bond in the TiO2 lattice [39,40]. Figure 3 shows the ATR-FTIR spectra of both the coating produced and pure lauric acid.…”

Novel Blue-Wavelength-Blocking Contact Lens with Er3+/TiO2 NPs: Manufacture and Characterization

“…The best optical characteristics were obtained by the prepared nanocomposites by designing a coating layer on a contact lens front surface to fabricate a blue-blocking contact lens. In the continuation of our work [31][32][33][34][35] on nanomaterials, herein, we report the synthesis of TiO 2 NPs and Er 3+ /TiO 2 by the impregnation method [36][37][38].…”