Self-doped Ti³⁺–TiO₂as a photocatalyst for the reduction of CO₂into a hydrocarbon fuel under visible light irradiation

Abstract

Self-doped TiO2 shows visible light photocatalytic activity, while commercial TiO2 (P25) is only UV responsive. The incorporation of Ti(3+) into TiO2 structures narrows the band gap (2.90 eV), leading to significantly increased photocatalytic activity for the reduction of CO2 into a renewable hydrocarbon fuel (CH4) in the presence of water vapour under visible light irradiation.

Gentle way to build reduced titanium dioxide nanodots integrated with graphite-like carbon spheres: From DFT calculation to experimental measurement

“…For the first issue, various approaches have been performed to make anatase TiO 2 sensitive to visible light, 6 and most of them are concerned on incorporating dopants at the O and/or Ti sites to introduce mid-gap states into the TiO 2 band gap. 7 As a result, the white color of TiO 2 might change, giving a clear sign that visible light has been absorbed. 8 Nevertheless, impurity incorporation can result in thermal instability and increasing carrier recombination centers.…”

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

“…It was found that TiO 2ÀX crystallinity and morphology can have a dramatic impact on photocatalytic properties. For example, TiO 2ÀX in the form of anatase, 14,22,23 rutile, 13,17,[24][25][26] and brookite 27,28 were studied as photocatalytic materials for water splitting under visible light, which is the most widely studied application. The use of titanium oxide, especially anatase, has also been studied for hydrogen generation by methanol photoreforming.…”

Acid‐Controlled Synthesis of Carboxylate‐Stabilized Ti44‐Oxo Clusters: Scaling up Preparation, Exchangeable Protecting Ligands, and Photophysical Properties

“…[14][15][16][17][18][19] The molecular structure and atomicc onnectivity of PTCs can be accurately determined by single-crystalX -ray diffraction, [8] andt his makesi tm uch easier to understand their electronic properties and mechanisms compared with their heterogeneous counterparts (e.g., solid TiO 2 ). [14,[19][20][21] Therefore, studies on PTCs offer insights into optimal reaction conditions, detailedm echanisms, and structure-property relationships at the atomiclevel. [22,23] The geometrical and electronics tructures of PTCs are highly tunable by simply varying the experimental conditions( e.g., stoichiometric ratio of reactants, solvents, reaction time/temperature, coordinating ligands).…”