Antimicrobial material compositions enriched with different active oxygen species
First Claim
1. Antimicrobial materials comprise of metal(s) nanoparticles, and/or same or different metal oxide(s) nanoparticles, and active oxygen species in a permeable coating. The preferred metals are selected from Ag, Au, Pt, Pd, and Cu, more preferred is silver;
- the preferred metal oxides are selected from the oxides of Ag, Au, Pt, Pd, Cu, Ir, Sn, Sb, Bi, and Ti, the more preferred metal oxides are silver and titanium oxide. The active oxygen species includes but not limit to O−
, O2−
, O22−
, and Ob. The said materials show strong antimicrobial effect within minutes when they contact the microbies in solution. The antimicrobial effect shows an average value of log reduction number 8 over a wide spectrum of microbes. The said materials show self-sterilization ability for months in air.
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Abstract
This invention discloses novel antimicrobial materials comprising of nanocrystalline metal, metal oxide, and active oxygen species in a permeable structure. It also discloses the compositions of the inventive material enriched with different active oxygen species. The inventive material showed a strong antimicrobial ability over a wide spectrum of microbies. The average log-reduction value was eight within five minutes. The inventive materials can remain sterile in air over more than two months. The methods used to prepare this inventive material are disclosed.
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Citations
20 Claims
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1. Antimicrobial materials comprise of metal(s) nanoparticles, and/or same or different metal oxide(s) nanoparticles, and active oxygen species in a permeable coating. The preferred metals are selected from Ag, Au, Pt, Pd, and Cu, more preferred is silver;
- the preferred metal oxides are selected from the oxides of Ag, Au, Pt, Pd, Cu, Ir, Sn, Sb, Bi, and Ti, the more preferred metal oxides are silver and titanium oxide. The active oxygen species includes but not limit to O−
, O2−
, O22−
, and Ob. The said materials show strong antimicrobial effect within minutes when they contact the microbies in solution. The antimicrobial effect shows an average value of log reduction number 8 over a wide spectrum of microbes. The said materials show self-sterilization ability for months in air. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- the preferred metal oxides are selected from the oxides of Ag, Au, Pt, Pd, Cu, Ir, Sn, Sb, Bi, and Ti, the more preferred metal oxides are silver and titanium oxide. The active oxygen species includes but not limit to O−
Specification