Preparation and Photocatalytic Activity of TiO2-Based Composite Catalysts
A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".
Deadline for manuscript submissions: closed (30 December 2022) | Viewed by 6170
Special Issue Editor
Special Issue Information
Dear Colleagues,
With the development of urbanization and the improvement of industrialization, modern industry has brought convenience and comfort to people, but it has also brought serious pollution problems. The discharge of waste water and exhaust gas has brought great harm to people’s living environment. Titanium dioxide has received extensive attention from scientists as a photocatalyst due to its photocatalytic degradation ability, environmental friendliness, and low price, and further advantages have been identified, such as its high chemical stability, low toxicity, and low operating cost. Titanium belongs to the N-order semiconductor material, while the band gap of titanium dioxide is 3.2eV. When titanium is irradiated by ultraviolet light whose wavelength is less than or equal to 387.5 nm, there is a photocatalytic effect, which is however limited by the high coupling probability of photogenerated carriers, and the photocatalytic efficiency of TiO2 is low. The most commonly used method to improve this photocatalytic efficiency is increasing its photoresponse range and reducing photo-generated carrier coupling. Through element doping, changing the morphology size and the construction of the heterojunction can make it improve its photocatalytic efficiency. In this issue, mainstream preparation methods of titanium dioxide are reviewed, and several suitable preparation schemes for improving the photocatalytic efficiency of titanium dioxide are introduced.
The main preparation methods of titanium dioxide are the sol–gel method, solvothermal method, hydrothermal method, anodic oxidation method, microwave-assisted method, CVD, PVD, etc. As titanium has a wide range of applications in harmful gas purification, building materials, coatings, daily necessities, and so on, titanium preparation and application have become one of the most popular research fields all around the world, and it is for this reason that we are launching this Special Issue dedicated to this topic. We look forward to your contributions.
Dr. Junjiao Yang
Guest Editor
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Keywords
- titanium dioxide
- titanium preparation
- composite catalyst
- photodegradation
