Synthesis, Properties, and Visible Light Photocatalytic Activity of Nonstoichiometric Titanium Dioxide-Based Composites

Autor:	M. L. Belikov, E. P. Lokshin, T. A. Sedneva
Rok vydání:	2020
Předmět:	Materials science General Chemical Engineering Metals and Alloys Oxide law.invention Inorganic Chemistry chemistry.chemical_compound Aniline chemistry law Ferroin Titanium dioxide Materials Chemistry Photocatalysis Calcination Composite material Stoichiometry Visible spectrum
Zdroj:	Inorganic Materials. 56:723-733
ISSN:	1608-3172 0020-1685
Popis:	We have synthesized oxide composites based on TiO2 modified with aliovalent cations, W6+, Co3+, Cu2+, and Fe3+, in the range 5–30 wt %. Its deviation from stoichiometry is increased by active generation of Ti3+ cations during vacuum calcination at temperatures from 500 to 800°C. The photocatalytic activity (PCA) of the composites for dye degradation reactions under illumination with visible light exceeds that of analogous samples calcined in air. The PCA of the synthesized materials is an intricate function of their composition and structure. The highest PCA, which considerably exceeds the PCA of TiO2 of similar origin and that of the commercially available Degussa P-25 TiO2, is offered by the optimal compositions of the W- and Cu-modified samples for ferroin and methylene blue degradation and the Co- and Fe-modified samples for aniline degradation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67a6410b7c72c8217114d0d82a29de82 https://doi.org/10.1134/s0020168520060023 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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