A porous silica having at least one metal X selected from the group consisting of Mn, Cu and Fe.

A deodorizing composition includes cucurbituril and one or more first metal salts, the first metal salt including at least one metal cation with a valency of at least two and at least one anion, wherein the metal cation is selected from the group made of aluminium, zirconium, silver, titanium, iron, copper, zinc, and magnesium cations.

Described is a device (1) for reducing pollutants in a gaseous mixture comprising: •a containment body (2) having an inlet portion (3) for the gaseous mixture and an outlet portion (4) for the gaseous mixture, the containment body (2) imposing on the gaseous mixture a fixed direction of flow (D), •at least one filtering unit (10) comprising a photocatalytic filter (7) interposed, along the fixed direction of flow (D), between a first light source (6a) and a second light source (6b), both having a wavelength in the visible spectrum (400-700 nm), the photocatalytic filter (7) comprising a photocatalytic nanoparticle coating and the nanoparticle coating comprising titanium dioxide doped with a nitrogen doping agent. •a unit (5) for straightening the flow before the filtering unit (10).

An apparatus includes a substrate having a surface and a transparent photocatalyst coating secured on the surface of the substrate, wherein the transparent photocatalyst coating includes titanium oxide and a component selected from a fluorescent dye, ultra-fine glitter, indium tin oxide, aluminum zinc oxide, silver nitrate, and combinations thereof. The substrate is preferably selected from an appliance handle, doorknob, switch, keyboard, countertop, appliance handle, equipment button, touchscreen, handrail, light emitting device, and light cover. Such substrates are frequently touched by one or more users and may become contaminated. However, the transparent photocatalyst coating may be self-decontaminating.

A self-disinfecting antiviral filter material 10 includes an air-permeable carrier 11 and a composite coating 12 including at least one color pigment 13 with antiviral activity and an inorganic matrix material 14 bonded to the carrier 11. The at least one color pigment 13 preferably includes at least one compound from the group of phthalocyanines. The matrix material is preferably selected from the group including metal oxides. An air filter device including the self-disinfecting antiviral filter material, a method of manufacturing the filter material, and a method of inactivating viruses are also described.

Presented here is a multi-functional powder which: comprises the first component that includes one selection from the group consisting of silicon oxide (SiO2), aluminum oxide (Al2O3), calcium oxide (CaO), magnesium oxide (MgO), and combinations thereof; and the second component that includes at least one selection from the group consisting of iron oxide (Fe2O3), potassium oxide (K2O), sodium oxide (Na2O), strontium oxide (SrO), sulfur trioxide (S3O), boron oxide (B2O3), manganese oxide (MnO), titanium dioxide (TiO2), and combinations thereof; whose far-infrared emission rate for the wavelength region of 5 .Math.ms to 20 .Math.ms at 37° C. is between 0.5% and 5%; whose harmful gas deodorization balance index under the following Formula 1 is between 0.8 and 2.0; and whose bacterial reduction rate (%) is 90% or greater for each of staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 8739), Klebsiella pneumonia (ATCC 4352), and Pseudomonas aeruginosa (ATCC 10145).

The sequential infiltration synthesis (SIS) and Atomic Layer Deposition (ALD) of metal and/or metal oxides on personal medical equipment (PPE). The deposited metal and/or metal oxides imbues antimicrobial properties to the PPE.

The sequential infiltration synthesis (SIS) and Atomic Layer Deposition (ALD) of metal and/or metal oxides on personal medical equipment (PPE). The deposited metal and/or metal oxides imbues antimicrobial properties to the PPE.

Described is a device (1) for reducing pollutants in a gaseous mixture comprising: a containment body (2) having an inlet portion (3) for the gaseous mixture and an outlet portion (4) for the gaseous mixture, the containment body (2) imposing on the gaseous mixture a fixed direction of flow (D), at least one filtering unit (10) comprising a photocatalytic filter (7) interposed, along the fixed direction of flow (D), between a first light source (6a) and a second light source (6b), both having a wavelength in the visible spectrum (400-700 nm), the photocatalytic filter (7) comprising a photocatalytic nanoparticle coating and the nanoparticle coating comprising titanium dioxide doped with a nitrogen doping agent. a unit (5) for straightening the flow before the filtering unit (10).

The present disclosure is method for treating an asphalt roof using the following steps: (1) clearing debris from the roof; applying fused alpha alumina containing aluminum oxide to cyanobacteria stains; and (3) evenly distribute fused alpha alumina on the cyanobacteria stains such that when it rains, dead cyanobacteria molecules are washed away.