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How to use titanium dioxide in catalytic field

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How to use titanium dioxide in catalytic field

2024-05-13 16:00:49

Titanium dioxide, the scientific name of titanium dioxide, is a white inorganic pigment, non-toxic, with the best opacity, the best whiteness and brightness, is currently the world's best performance of a white pigment, widely used in coatings, plastics, paper, printing ink, chemical fiber, rubber, cosmetics and other industries. 

With the development of high and new technology, the application of titanium dioxide is extending from traditional industries to functional materials, such as ultra-fine particles, electronic materials, photoelectric catalysts, flue gas denitrification and hydrogenation denitrification, desulfurization catalysts, etc., especially in the field of catalysis has been widely studied and applied.titanium dioxide


A Catalyst for Environmental Change

One of the most significant applications of titanium dioxide is in environmental cleanup. As a photocatalyst, TiO2 can degrade organic pollutants in air and water when exposed to ultraviolet (UV) light. This process, known as photocatalysis, involves the absorption of UV light, which energizes the TiO2 particles. These energized particles then react with water and oxygen to form reactive radicals that break down pollutants into harmless substances.

This technology is being applied in air purification systems to reduce pollutants like nitrogen oxides (NOx) and volatile organic compounds (VOCs). Similarly, in water treatment, TiO2-based photocatalysis is used to degrade organic contaminants, making it a promising solution for improving water quality without the need for harsh chemicals.

Advancements in Renewable Energy

Titanium dioxide is also playing a crucial role in the advancement of renewable energy technologies. In dye-sensitized solar cells (DSSCs), TiO2 acts as a semiconductor that facilitates the conversion of sunlight into electricity. DSSCs offer a cost-effective and flexible alternative to traditional silicon-based solar cells, with the potential to be incorporated into a variety of surfaces and materials.

Moreover, TiO2 is being explored in the development of photocatalytic water-splitting systems. This technology aims to harness sunlight to split water molecules into hydrogen and oxygen, providing a clean and sustainable source of hydrogen fuel. While challenges remain in achieving high efficiency and scalability, TiO2-based catalysts are at the forefront of research efforts to make solar hydrogen production a reality.

Industrial Applications and Innovations

Beyond environmental and energy applications, titanium dioxide is making strides in industrial catalysis. TiO2 is used as a catalyst support in various chemical processes due to its high surface area and stability. In the production of ammonia via the Haber-Bosch process, for instance, TiO2-supported catalysts help enhance reaction efficiency and reduce energy consumption.

Additionally, TiO2 is being integrated into processes for the selective catalytic reduction (SCR) of NOx emissions in industrial exhaust systems. This technology is critical for reducing air pollution from power plants and manufacturing facilities, and TiO2-based catalysts are prized for their durability and effectiveness under high-temperature conditions.

Conclusion

As a semiconductor material, titanium dioxide has a strong photocatalytic activity, which can be used as a photocatalyst for the degradation of organic pollutants. Impurities in titanium dioxide can also play the role of doping, so that the range of absorption wave of titanium dioxide is expanded. At the same time, titanium dioxide is also a good carrier of other catalysts, which plays the role of bearing and catalyzing, so titanium dioxide has broad application prospects in the field of catalysis.

Despite its many advantages, the application of titanium dioxide in catalysis is not without challenges. The primary limitation of TiO2 is its reliance on UV light for activation, which constitutes only a small fraction of sunlight. To overcome this, researchers are working on modifying TiO2 with dopants and co-catalysts to extend its light absorption into the visible spectrum. This could significantly enhance the efficiency of TiO2-based systems under natural sunlight, broadening their applicability.

More information can see our official website: xt-pigment