Reactive nanoparticles as destructive adsorbents for biological and chemical contamination

US6653519B2 · kind B2 · utility

Assignee

• NanoScale Materials, Inc. · US

Inventors

• Olga Koper · Manhattan, US
• Kenneth J. Klabunde · Manhattan, US
• Lisa S. Martin · Manhattan, US
• Kyle Knappenberger · Topeka, US
• Laura L. Hladky · Manhattan, US
• Shawn Decker · Manhattan, US

Key dates

• Filing date: Apr 3, 2001
• Grant date: Nov 25, 2003
• Expiry date: Jun 28, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2993
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Compositions and methods for destroying biological agents such as toxins and bacteria are provided wherein the substance to be destroyed is contacted with finely divided metal oxide or hydroxide nanocrystals. In various embodiments, the metal oxide or metal hydroxide nanocrystals have reactive atoms stabilized on their surfaces, species adsorbed on their surfaces, or are coated with a second metal oxide. The desired metal oxide or metal hydroxide nanocrystals can be pressed into pellets for use when a powder is not feasible. Preferred metal oxides for the methods include MgO, SrO, BaO, CaO, TiO2, ZrO2, FeO, V2O3, V2O5, Mn2O3, Fe2O3, NiO, CuO, Al2O3, SiO2, ZnO, Ag2O, [Ce(NO3)3—Cu(NO3)2]TiO2, Mg(OH)2, Ca(OH)2, Al(OH)3, Sr(OH)2, Ba(OH)2, Fe(OH)3, Cu(OH)3, Ni(OH)2, Co(OH)2, Zn(OH)2, AgOH, and mixtures thereof.