Researchers at the ICMM-CSIC and CNB-CSIC have developed a new bottom-up route to fabricate a soda-lime glass powder containing monodispersed copper nanoparticles. The process starts with the embedding of copper nanoparticles into sepiolite fibres produced by the research and development department of TOLSA S.A.

Seek and destroy

The bactericidal action of n-Cu glass powder proceeds firstly by the direct adsorption of copper nanoparticles present at the surface of the glass particles on to the bacteria. Next, in a second step, copper penetrates the cytoplasm causing damage and the subsequent death of bacterial cells as observed in the TEM micrographs of E. coli (see image above).

The researchers presented their work in Nanotechnology.