3m Innovative Properties Company

Other

Dahn, Jeffrey R.

Jock W H Smith

Jeffrey R Dahn

Lisa M Croll

Jennifer V Romero

Thomas Edward Wood

Allen Raymond Siedle

Philippe Westreich

Filter media that includes activated carbon particulates and zinc oxide particles disposed on surfaces of the activated carbon particulates. The zinc oxide particles have an average crystallite dimension that is not greater than about 50 nm.

Zinc oxide containing filter media and methods of forming the same

A filter for removing contaminants from air. The filter includes (a) a substrate that does not have any volatile ammonia on the surface thereof; (b) copper that has been impregnated onto the substrate; and (c) molybdenum and/or tungsten that has been impregnated onto the substrate. The filter can be made using an aqueous solution(s) that contains one or more of a first copper salt and a second salt that include a polynuclear anion that contains molybdenum, tungsten, or both. Because the metals can be impregnated onto the substrate surface without using an ammonium-based solution, the need to manage ammonia off-gassing is avoided. Further, no volatile ammonia would be present on the resulting substrate surface.

Ammonia-free gaseous air filter

Growing community of inventors

Halifax, Canada

Jock W H Smith