Photocatalytic activity of tungsten-modified titanium dioxide

TiO2- and Nb2O5-based photocatalytic composites

“…The synthesized materials exhibit significant pho tosensitivity in the visible range at λ ≥ 670 nm and even in the infrared spectral region at λ ≥ 900 nm, whereas the commercially available P25 does not decompose ferroin even at λ ≥ 420 nm [9]. …”

“…Researchers at the Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center, Russian Academy of Sciences, have developed a technique for effectively modifying TiO 2 with various elements through cohy drolysis of titanium salts and a dopant [6][7][8][9].…”

Synthesis and properties of photocatalytic composites based on titanium(IV) and nickel(II) oxides

“…The composite materials for this investigation were prepared through the cohydrolysis of stabilized TiCl 4 and NiCl 2 salts in a NaOH solution by procedures described previously [3,4]. After separation, the pre cipitate was washed with water at an overall solid : liq uid ratio of 1 : 50 and then heat treated isothermally in air.…”

“…It is known that the PCA of TiO 2 can be improved by doping with some cations [1,2]. The extension of the spectral range of PCA to the visible and infrared spec tral regions by doping TiO 2 with the aliovalent ions W 6+ and Nb 5+ was the subject of previous studies [3,4]. At the same time, several groups [5][6][7][8][9][10][11] have studied some aspects of structure formation in TiO 2 modified with nickel, a less expensive material, and noted a shift of the fundamental absorption edge of the composites to longer wavelengths upon some increase in Ni con centration.…”

Physicochemical and electrorheological properties of titanium dioxide modified with metal oxides

“…In addition to the traditional areas of applica tion (pigments and fillers for elastomers), new fields of practical use are arising, such as fillers for electrorheo logical fluids (ERFs) [1][2][3][4] and photocatalysts [5][6][7][8][9][10]. The efficiency of titanium dioxide application is determined by its characteristics, such as dispersity, surface state, and electrophysical properties (conduc tivity, the presence of charge carriers, their mobility, etc.…”