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Iranian researchers from Institute for Color Science and Technology formulated a self-cleaning ink and printing titania nanoparticles on glass by using inkjet printers.
Cleaning glasses, especially in today's tall buildings and towers, is very challenging and expensive. At the same time, glass or surfaces coated with titanium dioxide photocatalyst show self-cleaning properties under the sun radiation.
Dr. Maryam Hosseinizari, the executor of the plan, stated, "Taking into consideration the fact that printing with inkjet printers on ceramic and tile industry have become common recently, this research was carried out in order to determine the self-cleaning properties of the glass after stamping titania nanoparticles on the glass surface by using inkjet printer."
"The pre-prepared ink was printed on the glass. Then, the glass was dried and the relation between the thickness and self-cleaning power was evaluated and discussed," she continued.
Hosseinzari pointed to other advantages of the plan, and said, "Contrary to screen printing method, the wastage of material is significantly reduced in this method. However, it must be pointed out that there are limitations for the direct use of pigment in printing ink."
"Among the limitations, mention can be made to the fact that the pigment should be synthesized in a fine morphology and small size, and it should have homogenous distribution and stability so it will not block the ink vessel. Therefore, the synthesis method is highly important."
Results of the research have been published in December 2012 in Journal of the European Ceramic Society, vol. 32, issue 16, pp. 4271-4277.
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