Fabrication of Ti³⁺ self-doped TiO₂(A) nanoparticle/TiO₂(R) nanorod heterojunctions with enhanced visible-light-driven photocatalytic properties

Abstract

Ti3+ self-doped TiO2(A)/TiO2(R) heterojunctions were synthesized and the samples exhibit high visible light photocatalytic activity.

Photocatalytic degradation of norfloxacin on different TiO2−X polymorphs under visible light in water

“…29 However, few systematic studies on TiO 2ÀX isoforms for photocatalytic the degradation of organic pollutants in water have been reported, nor have the degradation mechanisms been assigned. [30][31][32][33][34] It would be of great scientic interest and practical importance to nd out the differences among the various TiO 2ÀX in terms of reaction kinetics and mechanism for the degradation of organic pollutants in water.…”

Effect of different processes and Ti/Zn molar ratios on the structure, morphology, and enhanced photoelectrochemical and photocatalytic performance of Ti3+ self-doped titanium–zinc hybrid oxides

“…1; TV-4), and separation of photoinduced electrons and holes is shown in Fig. 9b [26]. Differences between the band edges of the two TiO 2 phases could appropriately facilitate charge transfer [49].…”

“…Our hypothesis was confirmed by the sample microstructures obtained via transmission electron microscopy (TEM) and high-resolution transmission electron microcopy (HRTEM). [26]. When the molar ratio of Ti/Zn was 3, the sample from the black precipitate was made of a large number of nanoparticles and a small quantity of nanorods and small nanoflakes (Fig.…”

“…Based on the results of past investigations, we introduce a simple method to prepare Ti 3+ self-doped titanium-zinc hybrid oxides. In our previous work, we reported a hydrothermal process for synthesizing Ti 3+ self-doped TiO 2 (A)/TiO 2 (R) heterojunctions using Zn powder as the reductant [26]. Heterojunction architectures and Ti 3+ contents may be controlled by adjusting the temperature of hydrothermal treatment.…”

Simple Ethanol Impregnation Treatment Can Enhance Photocatalytic Activity of TiO2 Nanoparticles under Visible-Light Irradiation

“…[1][2][3][4] In particular, doping has been regarded as an important way to enhance photocatalytic activity of TiO 2 under visible light. [5][6][7] Bulk doping, either with foreign elements 8,9 or via self-doping [10][11][12] (Ti 3+ and oxygen vacancies), could render TiO 2 colored and exhibit photocatalytic activity under visible light.…”