Self-cleaning treatment for glazed surfaces

The maintenance of buildings and infrastructures is one of the great current economic challenges.

Therefore, LAURENTIA TECHNOLOGIES has developed a series of products based on nanoparticles of titanium and silicon oxides, aimed at the reduction of maintenance tasks in glazed surfaces giving the following properties:

  • Increased hydrophilicity.

The photocatalytic action of the surface treatment increases the glass hydrophilicity which causes water droplets to form a continuous curtain of water to wash away dirt. Thus, the glass is more easily cleaned and also have anti-fog properties.

  • Self-Cleaning Effect.

The photocatalytic action of the treatment has an effect of decomposing organic material that is deposited on the surface, such as paint, waste or depositions.

In the laboratory, it has managed to remove dye stains after applying a UV radiation with a 300 W lamp 42 cm from the sample for 2 hours.

  • Decontamination of NOx Gases.

As an added value, the treatment applied to glass brings decontaminating properties of NOx gases. This effect occurs in the presence of sunlight, and TiO2 nanoparticles (in anatase) produce free radicals on the surface of the glass that causes degradation of the NOx gases transforming a nitrate. These nitrates are soluble in rainwater, which completes the decontamination process.

Have been achieved NO decomposition yields 21.9 % and 13.1 % NOx.

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