Using Titanium dioxide in coating outdoor advertising surfaces and graffiti ads in reducing atmospheric pollution in Egypt

Abstract
Developing paint products that help save the environment and address climate change started several years ago, but people who are exposed to toxic air pollutants at sufficient concentrations indoor and outdoor, for long durations, may increase their chances of getting cancer or experiencing other serious health effects, such as reproductive problems, birth defects, and aggravated asthma.

There are many types of coatings that purify the atmosphere, whether indoor or outdoor. These coatings can be used in advertising industry, especially external advertising and graphic ads. It is also a technology not used in Egypt and its optimal use will provide fresh air and better life, reduce allergic chest diseases, and help purify the air and breathe cleaner air.

This paper aims to clarify the impact of air purification by heterogeneous photocatalysis (ultrafine titanium dioxide or nanocrystalline titanium dioxide (TiO2) particles of with diameters less than 100 nm) coated on advertising outdoor materials and painted on street walls in Egyptian industrial cities. Coating outdoor advertisements with TiO2 is an advanced surface coating technology designed to self-clean the surface, remove air and water contaminates, suppression of microbial growth, degrading hazardous organic pollutants into harmless substance.

This paper also seeks to contribute in reducing air pollution rates by using advertising as an intermediary to realize the fastest results in the shortest time. Producing safe and healthy living environment is what this paper hopes to achieve in Egypt in a short period of time by help applying these coatings to industrial cities. The effect of using titanium dioxide nanoparticles, identification of its applications, usage on advertising materials and its impact on environment were studied.

Some examples have been discussed and illustrated about using titanium dioxide in advertising and street paintings in air purification beside the statistical method used in analyzing the questionnaire presented to individuals. This paper follows the descriptive approach in collecting theoretical information related to Titanium dioxide and its role in converting outdoor advertisements to giant air purifying advertising systems, followed by presenting some international advertising models that used purifying titanium dioxide in ad painting.