The present disclosure relates to a method for manufacturing an air filtration material, in which the porous metallic support is treated with at least one chemical agent to improve adherence of the electrospun nanofibers. The air filtration material obtained from such method comprises nanoparticle photocatalysts, wherein the nanoparticle photocatalysts are embedded in the electrospun nanofibers and part of the nanoparticle photocatalysts is exposed at the surface of the electrospun nanofibers through nanopores. An air filtration device, comprising the air filtration material, a UV LED and a power source. A method of using the air filtration material wherein an air flow passes through the air filtration material, wherein the air flow has a pollutant content before passing through the material, in order to decrease the air pollutant content. The nanoparticle photocatalysts inactivate or kill the pathogens when the device is in operation.

The invention refers to a method for manufacturing a catalytic device, with the steps: a) providing a first catalyst having photocatalytic activity, a second catalyst, which is a different molecule than the first catalyst, and an adsorbent, each in a powdered state, b) mingling the first catalyst, the second catalyst and the adsorbent to form a catalytic composition and suspending them in a suspension liquid to form a slurry, and c) repeatedly coating the slurry onto a solid grid-like carrier having a plurality of through holes, configured to allow a gas to flow through the carrier, and evaporating the suspension liquid.

An electronic device includes a housing, a photocatalyst filter, at least one first sensor provided in the housing, a blower fan configured to introduce air into the housing, a light source configured to emit light to the photocatalyst filter, and a processor configured to control the blower fan and the light source, determine a degree of contamination of the photocatalyst filter based on a difference in sensor values between the at least one first sensor provided in the housing and at least one second sensor outside of the housing or a rate of change in sensor values between the at least one first sensor provided in the housing and the at least one second sensor outside the housing, and recycle the photocatalyst filter based on the determined degree of contamination of the photocatalyst filter.

A photocatalyst filter is provided. The photocatalyst filter includes: a base in which an internal space is formed. The internal space is permeable to fluid, and a plurality of photocatalyst beads are provided in the internal space, wherein a surface of the internal space is reflective.

Proposed is a photocatalytic complex. The photocatalytic complex includes a photocatalyst, and an iodine compound layer formed on a surface of the photocatalyst to cover the same and containing an iodine compound. The present disclosure enables selective degradation of hydrophilic volatile organic compounds by the use of the photocatalyst coated with the iodine compound.

A multi-functional air purification filter includes: a breathable support layer; a mesh layer provided on the breathable support layer; and a filter layer provided on the mesh layer, wherein at least a portion of the multi-functional air purification filter has a plurality of bends, and the mesh layer includes a coating layer of at least one of a photocatalytic material, an adsorption material, or a sterilizing material.

A porous carbon material composite formed of a porous carbon material and a functional material and equipped with high functionality. The porous carbon material composite is formed of (A) a porous carbon material obtainable from a plant-derived material having a silicon (Si) content of 5 wt % or higher as a raw material; and (B) a functional material adhered on the porous carbon material, and has a specific surface area of 10 m.sup.2/g or greater as determined by the nitrogen BET method and a pore volume of 0.1 cm.sup.3/g or greater as determined by the BJH method and MP method.

A multifunctional air pollution reduction device includes a tool and a multifunctional pollutant remover. The multifunctional pollutant remover is adjacent to or integrated with the tool. The multifunctional pollutant remover can not only reduce air pollution, but also help reduce one or more of the following problems when using the tools: noise, vibration and/or slip.

A fluid treatment apparatus including a photocatalyst filter having a first surface and a second surface, a light source unit spaced apart from the photocatalyst filter to provide light to the first surface, a housing including an inlet, an outlet, and a flow path formed between the photocatalyst filter and the light source, and a guide member disposed at one side of the housing and including at least one slat to guide a movement direction of a fluid, in which the slat is inclined at least in a direction closer to the first surface of the photocatalyst filter along an advancing direction of the flow path when an air flow rate of the fluid has a first value, and in a direction away from the first surface of the photocatalyst filter along the advancing direction when the air flow rate of the fluid is greater than the first value.

Provided is an air cleaner, and more specifically, to an air cleaner in which a filter part using a photocatalyst is formed in a module type to facilitate replacement and cleaning and which includes an insert fan which is disposed inward from a suction port of a casing forming an exterior and including the suction port disposed at one side and a discharge port disposed at the other side, and suctions ambient air, a driving motor provided to be axially detachably coupled to the insert fan in a direction from the discharge port, and a suction unit fixing part in which an accommodation space, into which the insert fan and the driving motor are fixedly inserted in the direction from the suction port toward the discharge port and which is finished by inserting a cover member in the direction from the discharge port.