The present application relates to a filter having a photocatalyst attached thereto, which comprises: a substrate; and a photocatalyst bonded on the substrate, in which the photocatalyst has each photocatalyst bonded and combined by a polymer binder, and the substrate and the photocatalyst are bonded by a hydrophilic polymer binder.

This publication discloses an electrostatic filter construction, to be positioned in air ducts or ventilation channels, which electrostatic filter construction includes a charging unit, which charges the particles to be filtered into a first electric potential and arranged in the filter construction in the path of the air flow before filter elements, electrically conducting electrodes connected to a second electric potential different to the potential of the charged particles and set substantially parallel to the direction of the airflow, and bag shaped filter elements positioned after the charging unit in the path of the air flow. According to the invention each bag shaped filter element has at least one designated UV-light source and an element of photo catalytic material like TiO.sub.2.

The present invention provides a UV sterilization module capable of suppressing a generation of ozone inside and outside a device, and emitting UV rays having a wavelength of near 200 to 230 nm, in particular UV rays having a wavelength of 222 nm at a high luminous intensity, and a UV sterilization apparatus using the UV sterilization module. According to the UV sterilization apparatus of the present invention, bacteria or viruses existing on a surface of the biological tissue may be selectively UV sterilized without harming animal cells such as human cells, and a generation of ozone harmful to the skin may be reduced.

The invention relates to a photocatalytic carbon dioxide reduction method carried out in liquid and/or gas phase under irradiation, using a photocatalyst containing a first semiconductor, particles comprising one or more metallic-state elements M, and a second semiconductor SC, wherein the method is carried out by contacting a feedstock containing the CO.sub.2 and at least one sacrificial compound with the photocatalyst, then irradiating the photocatalyst such that the CO.sub.2 is reduced, and oxidising the sacrificial compound in order to produce an effluent containing at least in part C1 or above carbon molecules other than CO.sub.2.

A method for intelligently preventing and handling indoor air pollution is adapted to be implemented in an indoor space and includes providing a cloud processing device to receive and intelligently compare an outdoor gas detection data, an indoor gas detection data, and device gas detection data with each other. Then, the cloud processing device remotely transmits a control signal to the communication relay station and further to an indoor gas exchange system, so that the indoor gas exchange system is capable of intelligently enabling the gas processing device and controlling the operation time of the gas processing device for exchanging a polluted gas in the indoor space with the outdoor gas. Moreover, the gas exchanger can perform purification for the polluted gas at the location of the gas exchanger, thereby allowing the polluted gas in the indoor space to be exchanged into a clean, safe, and breathable gas.

An air purifier includes a housing that includes an intake port and an exhaust port, a filter unit that includes a photocatalytic filter and is housed in a unit housing within the housing, a light source that exposes the photocatalytic filter to light, and a blast fan that generates a flow of air passing through the unit housing. The photocatalytic filter is formed in a wavy shape in which ridge portions and trough portions extending in a first direction are alternately arranged in a second direction orthogonal to the first direction, and the photocatalytic filter is housed in the unit housing such that the flow of air flows along the first direction.

An air purification system for a passenger cabin of a transport vessel. The air purification system comprises an elongated air compartment having a panel, with a plurality of openings along the panel. Air filters reside within the various openings to receive air from inside the cabin. The system also includes a plurality of air tubes. Air moves through the air tubes, aided by a source of compressed air to motive flow valves. The motive flow valves create suction to draw air into the air compartment from the passenger cabin. The system also includes at least one UV-C light source. The UV-C light resides within the air compartment, and disinfects the air moving through the air compartment. A plurality of air outlets are also placed along the lower panel, with each outlet configured to release air at selected points to provide a continuous distribution of filtered and disinfected air into the passenger cabin.

The present invention relates to an air filter using glass and aluminum substrates coated with a photocatalyst and a manufacturing method therefor. Disclosed is an air filter, which is more efficient in removing organic gas from air by using optical properties of a glass material and surface reflectance of an aluminum metal material to actively utilize the transmission and reflection of the light that is limitedly provided.

An Air-Water-Food-Fabric-Space-Utility sanitizer (all in one) comprises a detachable blower chamber, a detachable UVC lamp holder, a detachable UVC lamp chamber, a detachable water chamber and a detachable lid. Said invention transforms to an air purifier, a chamber-style sanitizer, or a stand-style sanitizer when one or more chambers are detached. Germicidal lamps surround a target such as air, water, food (meats, plants), fabric (masks, towels), space, utility and soil to kill pests, parasites, insects and pathogenic spores. Said invention also develops seed germination. Water converts gas (MVOC) to liquid and arrests airborne contaminants. A blower drives them to water to enable the use of optimal dosage of UVC light. By either UVC-irradiating water or oxidizing water, pathogens are destroyed in the water chamber. Filters activate spore dispersal when disposed by burning. By not using potentially hazardous waste or an air outlet, pathogenic spores cannot reproduce or return to the environment.

There is provided an apparatus, system and method to treat air and surfaces using light. The apparatus comprises a hollow body having an inlet and outlet for passage of air. Treatment lamps are body mounted for movement between an air treatment position to treat air inside the body and a surface treatment position to treat air/an external surface. When installed in a room environment, the apparatus, via a system controller, operates in an air treatment mode, a surface treatment mode or an off mode. Room sensors (e.g. interlock and presence) communicate with the controller and the controller permits or prevents operation in the surface treatment mode accordingly. If any interlock sensor senses an open position or the presence sensor senses a presence (e.g. motion), operation in the surface mode is prevented. A remote control communicates with the controller to select an operating mode.