A filtering material for air filters, the filtering material including a base material; and an enzyme-containing antibacterial material, an inorganic anti-allergenic material, and a fungal inhibitor, all being supported on the base material.

In one aspect, a material structure is disclosed, which includes a macroscopic porous substrate configured to receive a flow of a medium for passage of at least a portion thereof through the porous substrate. At least one porous coating is disposed on at least a portion of an inner surface of the porous substrate, wherein the porous coating comprises a matrix having a plurality of interconnected passages. The porous substrate and the coating are configured to treat at least one contaminant, if any, present in the flowing medium.

A face mask and face mask filter system filters droplets and aerosols, and applies a treatment that causes viruses particles carried by droplets and aerosols to be rendered non-infectious by application of a low voltage electric field. Optionally, the face mask filter system includes an electric circuit operatively coupled to the face mask filter and configured to monitor and/or enhance treatment of virus particles.

A system includes an air duct and an ultra-violet (UV) photocatalysis system in fluid communication with the air duct for reduction of airborne pathogens in air flow through the air duct. An HVAC system can is fluid communication with the air duct, where the HVAC system is upstream and/or downstream of the air duct. The UV photocatalysis system can include at least one vacuum UV (VUV) illuminator positioned in the air duct to illuminate at least one photocatalyst body. The photocatalyst body can be configured to catalyze ionization of pathogens in airflow through the air duct under illumination from the VUV illuminator.

An antiviral air-filtering lighting device includes an air-permeable lampshade, a visible light source, a driver, and an air circulation mechanism. The lampshade diffuses a visible light emitted from the visible light source and includes an air inlet port. The lampshade is coated with a visible-light activatable antiviral photocatalytic coating. The visible light source is disposed inside the lampshade to shine its light through the lampshade to activate the visible-light activatable antiviral photocatalytic coating on the lampshade. The air circulation mechanism sucks an ambient air from outside the lighting device, and forces the air through the lampshade. The lampshade traps airborne microbials on the surface having the visible-light activatable antiviral photocatalytic coating. A light emitted by the first visible light source activates a photocatalyst material in the visible-light activatable antiviral photocatalytic coating, and the airborne microbials trapped by the air filter are killed or deactivated by the activated photocatalyst material.

A system and method for maintaining, monitoring and improving air quality and purity in a room or environment, such as a hospital room or operating room.

A disinfectant device including a pouch, the pouch including a first layer of material coupled to a second layer of material and defining a compartment therebetween. At least one dry reactant is retained within the compartment, the at least one dry reactant producing chlorine dioxide gas when exposed to water. A wick is at least partially disposed within the compartment. At least one from the group consisting of the first layer of material and the second layer of material define an array of ports along a periphery of the pouch and an array of fluid conduits, the array of fluid conduits being proximal to the array of ports, offset from the array of ports, in fluid communication with the wick, the compartment, and the array of ports.

An apparatus includes multiple first reservoirs and multiple second reservoirs joined with a substrate. Selected ones of the multiple first reservoirs include a reducing agent, and first reservoir surfaces of selected ones of the multiple first reservoirs are proximate to a first substrate surface. Selected ones of the multiple second reservoirs include an oxidizing agent, and second reservoir surfaces of selected ones of the multiple second reservoirs are proximate to the first substrate surface.

A disinfecting device for purifying air to reduce the presence of dust and/or pathogens. The device includes a main housing, a battery module configured for installation within a first receptacle in the main housing and a reservoir module configured for installation within a second receptacle in the main housing. The reservoir is configured to hold a disinfecting fluid. The housing also includes an ultrasonic wave emitter electrical power communication with the battery, the ultrasonic wave emitter providing ultrasonic waves to the disinfecting fluid thereby creating a pressurized fluid, a membrane in contact with the pressurized fluid. The membrane generates reduced-size particles of the pressurized fluid which are emitted from a nozzle mounted on the housing.

A composite virucidal filter media is described. The filter media comprises a fibrous substrate comprising a plurality of intermingled fibers, a low cost, nontoxic, hydrophilic polymer without acidic functional groups deposited on a surface of the fibers without the formation of a continuous coating layer on the substrate, and a virucidal metal, a virucidal metal-containing compound, or combinations thereof deposited on the surface of the fibers comprising the hydrophilic polymer without acidic functional groups. The hydrophilic polymer without acidic functional groups can be charged or non-charged. Methods of making virucidal fibrous filter media are also described.