By irradiating a pure tellurium target in deionized water, researchers formed 'naked' tellurium dioxide nanoparticles with a spherical morphology and a size of around 70 nm. The surface of those nanoparticles is totally clean (hence 'naked'), meaning that it does not contain any residues from chemical reactions. This surface cleanliness makes them ideal to interact with biological pathogens and it takes less than 10 ppm to eradicate deadly pathogens like multi-drug resistant E. coli and Methicillin-resistant S. aureus.
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