For decades, PFAS — the synthetic chemicals used in everything from nonstick cookware to water-resistant textiles — have accumulated in drinking water with no reliable way to break them down. They're called "forever chemicals" for a reason: they don't degrade naturally, and conventional water treatment barely touches them.
Now researchers at Rice University have developed a material that doesn't just capture these toxins. It destroys them, then regenerates itself to do it all over again.
A material that actually works
The breakthrough centers on a layered compound made from copper and aluminum, discovered by researchers at South Korea's KAIST in 2021. When postdoctoral fellow Youngkun Chung tested a nitrate version of this material, the results were striking: it captured PFAS more than 1,000 times more efficiently than existing materials, and did it roughly 100 times faster than commercial carbon filters.
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Start Your News Detox"To my astonishment," Chung said, "this compound removed large amounts of PFAS within minutes." The material's secret lies in its structure — those copper-aluminum layers create an ideal chemical environment for PFAS molecules to stick fast and hold tight.
The team tested it in real conditions: river water, tap water, wastewater. Every test showed the same pattern. It worked in static systems and in continuous-flow setups, suggesting it could scale to municipal water treatment plants and industrial cleanup sites where PFAS contamination is worst.
Closing the loop
Capturing toxins is only half the problem. You still have to deal with what you've caught. Here's where the design gets elegant: by heating the saturated material with calcium carbonate, the researchers thermally decomposed the trapped PFAS without creating toxic byproducts. Better still, the process regenerated the material itself, allowing it to be reused.
Preliminary testing showed the material could complete at least six full cycles of capture, destruction, and renewal — making it the first known system that's both effective and sustainable. The research, published in Advanced Materials, represents work by teams across Rice, KAIST, and Pukyung National University in South Korea.
The next phase is moving from lab to real-world water systems, where PFAS contamination has become a quiet crisis. Thousands of communities in the U.S. alone have detected these chemicals in their water supplies. A material that can actually eliminate them — rather than just move them around — changes the practical equation.
