A porous gel embedded with silver nanoparticles soaks up microbe-tainted water and then releases disinfected water when squeezed. http://cen.acs.org/articles/91/web/2013/08/Spongy-Material-Puts-Squeeze-Waterborne.html via DuckDuckGo for Android
Off-topic rant: Why is it that when one good objective (such as filtering water with silver) is met with an equally opposing result (such as leaching of silver into the water)? So it is with the duality-nature of this hellish planet. Y’all get one good idea/invention/discovery and there is almost always the peer review or opposition messing things up, much like how expired copyrighted inventions are later marketed for profit. Oh well…
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