Phosphotungstic Acid - Titanium Dioxide Photocatalytic Material

In recent years, with the improvement of people's living standards, a large number of new decorative materials and luxurious and fashionable modern furniture and other household goods continue to enter the interior, resulting in the increasingly serious indoor environmental pollution. At present, the main indoor pollutants such as formaldehyde, benzene, toluene and other volatile organic compounds (voc) seriously exceed the standard, causing great harm to people's health.

It is well known that phosphotungstic acid is a kind of environmental friendly acid substitute catalyst which is often used in industry. It is called phosphotungstic heteropoly acid. There are many kinds of polyacid compounds. The heteropoly acid with Keggin structure has certain application value in the degradation of organic compounds and organic polluted gases. This is determined by its own advantages, because the molecule of polyoxometalate cluster complexes can be regarded as quantity. Semiconductor material of sub-grade; strong acid, strong oxidation and high photochemical activity; low toxicity, no pollution to the environment; high activity, mild reaction conditions, no corrosion to equipment.

The preparation of nano-sized phosphotungstic acid-titanium dioxide photocatalytic materials by compounding phosphotungstic acid and titanium dioxide requires the following steps:

It is well known that phosphotungstic acid is a kind of environmental friendly acid substitute catalyst which is often used in industry. It is called phosphotungstic heteropoly acid. There are many kinds of polyacid compounds. The heteropoly acid with Keggin structure has certain application value in the degradation of organic compounds and organic polluted gases. This is determined by its own advantages, because the molecule of polyoxometalate cluster complexes can be regarded as quantity. Semiconductor material of sub-grade; strong acid, strong oxidation and high photochemical activity; low toxicity, no pollution to the environment; high activity, mild reaction conditions, no corrosion to equipment.

The preparation of nano-sized phosphotungstic acid-titanium dioxide photocatalytic materials by compounding phosphotungstic acid and titanium dioxide requires the following steps:

In the process of synthesis, phosphotungstic acid binds to form a stable network structure in the form of W-O-P molecular bond. This structure reduces the redox potential of titanium, makes the absorption wavelength of titanium dioxide composite film Red shift, and improves the visible light utilization of titanium. Moreover, the Keggin structure of phosphotungstic acid is not affected by subsequent photocatalytic material heating treatment, and still maintains high catalytic activity. Like a tiger with wings.

• < Prev
• Next >