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When some semiconductors absorb light, excitons (or particle pairs made of an electron bound to an electron hole) can form. Two-dimensional crystals of tungsten disulfide (WS2) have unique exciton states that are not found in other materials.
Chemists at Argonne National Laboratory in DuPage County have worked out a new way to recycle certain plastics infinitely, a discovery that could change the way we recycle containers like those used for milk and laundry detergents.
Catalyst materials accelerate chemical reactions without undergoing changes themselves. They are critical for refining petroleum products and for manufacturing pharmaceuticals, plastics, food additives, fertilizers, green fuels, industrial chemicals and much more.
In a Nature paper, researchers detail a new method to anchor single atoms of platinum-group metals on nanometer-sized islands, allowing efficient use of these metals as catalysts for a variety of applications.
In work that could usher in more efficient, eco-friendly processes for producing important metals like lithium, iron, and cobalt, researchers from MIT and