Copper-containing glass ceramic with high antimicrobial efficacy

Timothy M. Gross (), Joydeep Lahiri (), Avantika Golas, Jian Luo, Florence Verrier, Jackie L. Kurzejewski, David E. Baker, Jie Wang, Paul F. Novak and Michael J. Snyder
Additional contact information
Timothy M. Gross: Corning Incorporated
Joydeep Lahiri: Corning Incorporated
Avantika Golas: Corning Incorporated
Jian Luo: Corning Incorporated
Florence Verrier: Corning Incorporated
Jackie L. Kurzejewski: Corning Incorporated
David E. Baker: Corning Incorporated
Jie Wang: Argonne National Laboratory
Paul F. Novak: Corning Incorporated
Michael J. Snyder: Corning Incorporated

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Hospital acquired infections (HAIs) and the emergence of antibiotic resistant strains are major threats to human health. Copper is well known for its high antimicrobial efficacy, including the ability to kill superbugs and the notorious ESKAPE group of pathogens. We sought a material that maintains the antimicrobial efficacy of copper while minimizing the downsides – cost, appearance and metallic properties – that limit application. Here we describe a copper-glass ceramic powder as an additive for antimicrobial surfaces; its mechanism is based on the controlled release of copper (I) ions (Cu1+) from cuprite nanocrystals that form in situ in the water labile phase of the biphasic glass ceramic. Latex paints containing copper-glass ceramic powder exhibit ≥99.9% reduction in S. aureus, P. aeruginosa, K. aerogenes and E. Coli colony counts when evaluated by the US EPA test method for efficacy of copper-alloy surfaces as sanitizer, approaching that of benchmark metallic copper.

Date: 2019
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DOI: 10.1038/s41467-019-09946-9

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