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A chemical team of the American University has achieved through the 3D printing process a sponge composed of a mixture of ABS and TiO2 able to absorb pollution thanks to photocatalysis.

processo fotocatalisi

The TiO2 titanium oxides are already the basis of many materials “eats smog” for the characteristic of the particle to be able to harness the energy of ultraviolet radiation it has absorbed to trigger chemical reactions in other molecules very close to its own surface. The new mixture created from Matthew Hartings team keeps active the properties of the TiO2 particles and behaves like a common filament of ABS used by means of extrusion with the 3D printers currently on the market, and even the mechanical analysis records a higher breaking point of that of simple ABS.

spugna TiO2

Future applications are vast and embrace not only the chance to absorb the pollutants in the air but also on the water, opening precisely streets until now only imaginable. American researchers are now focusing on how and how much the form in which the sponge is printed affect the chemical reaction of the compound, in order to get to the perfect combination of “shell and core”.

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