Dye pigments are often toxic, so researchers around the world have long been looking for effective ways to make non-toxic, recyclable and sustainable colours instead. The answer lies in nanotechnology and nature’s own methods.
By controlling a mix of clay, water and salt, Norwegian and Brazilian researchers have created nanostructures that might help boost oil production, expand the lifespan of certain foods or that could be used in cosmetics or drugs.
Ordinary clay can be as good as more advanced materials for capturing carbon dioxide.
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