A method for the manufacture of a gasoline particulate filter (GPF) for the treatment of an exhaust gas is disclosed. The method comprises (i) forming a washcoat slurry; (ii) coating a wall-flow filter substrate with the washcoat slurry to form a washcoated substrate; and (iii) calcining the washcoated substrate to form a gasoline particulate filter. The washcoat slurry comprises (a) a platinum group metal selected from the group consisting of Pt, Pd, Rh and mixtures thereof; (b) an oxygen storage capacity (OSC) material; and (c) a C.sub.2-C.sub.6 aliphatic amino acid.

A nano-functionalized support comprises an application surface and a photocatalytic nanoparticle coating deposited on the application surface. The photocatalytic nanoparticle coating comprises titanium dioxide doped with a nitrogen-containing doping agent.

A photocatalyst for air purification, a photocatalyst film including the photocatalyst, and an air purification device including the photocatalyst. The photocatalyst for air purification includes: a first metal oxide particle having ultraviolet absorptivity, and fluorine bound to a surface of the first metal oxide particle; second metal oxide particles present on the surface of the first metal oxide particle. The use of the photocatalyst for air purification to remove or degrade volatile organic compounds (VOCs) and viruses.

A muffler includes a muffler housing having an exhaust gas inlet port adapted for securing to an exhaust pipe of an automobile so that exhaust gases from an internal combustion engine of the automobile are directed through the muffler housing from the exhaust gas inlet to an exhaust gas outlet. The muffler housing includes a plurality of rigid surfaces that form an exhaust gas pathway including a plurality of turns and lead from the exhaust gas inlet port to the exhaust gas outlet port. A photocatalyst coating is secured to an area of the rigid surfaces, and a light source is secured to the muffler housing and positioned to direct light onto the photocatalyst coating. The exhaust gases come into contact with the photocatalyst coating and reactive species generated by the photocatalyst coating decompose one or more pollutants in the exhaust gas.

A nano-functionalized support comprises an application surface and a photocatalytic nanoparticle coating deposited on the application surface. The photocatalytic nanoparticle coating comprises titanium dioxide doped with a nitrogen-containing doping agent.

Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membranes can comprise a support layer, and a selective polymer layer disposed on the support layer. The selective polymer layer can comprise an oxidatively stable carrier and a borate additive dispersed within a hydrophilic polymer matrix. The oxidatively stable carrier can comprise a quaternaryammonium hydroxide carrier (e.g., a mobile carrier such as a small molecule quaternaryammonium hydroxide, or a fixed carrier such as a quaternaryammonium hydroxide-containing polymer), a quaternaryammonium fluoride carrier (e.g., a mobile carrier such as a small molecule quaternaryammonium fluoride, or a fixed carrier such as a quaternaryammonium fluoride-containing polymer), or a combination thereof. The borate additive can comprise a borate salt, a boric acid, or a combination thereof. The membranes can exhibit selective permeability to gases. As such, the membranes can be for the selective removal of carbon dioxide and/or hydrogen sulfide from hydrogen and/or nitrogen.

An apparatus and method for treating air. A housing can enclose a heating zone and an oxidizing zone positioned downstream of the heating zone with respect to a flow direction of the air being treated. A catalyst in the oxidizing zone oxidizes contaminants from the air, and an air mover positioned is configured to move air from an air inlet through the housing to an air outlet. An air treatment cycle can include an air cleaning mode at a high air flow and a self-cleaning mode at a lower air flow. A heater is operated during the self cleaning mode to oxidize contaminants that on the catalyst from the air cleaning mode.

The problem of the present invention is to provide an exhaust gas purifying agent for automobiles which is capable of improving the automobile fuel mileage as well as purifying the exhaust gas of the automobiles, and further extending the effective duration of the exhaust gas purifying agent for automobiles by a simple method of spraying the exhaust gas purifying agent for automobiles using only natural ingredients on the air filter. The problem of the present invention can be solved by using a liquid containing a) tourmaline fine powder, b) porous material fine powder, c) fucoidan extracted from seaweeds, d) amino peptides and/or alginic acids extracted from seaweeds in water as the exhaust gas purifying agent for automobiles by spraying on the air filter of automobiles.

The problem of the present invention is to provide an exhaust gas purifying agent for automobiles which is capable of improving the automobile fuel mileage as well as purifying the exhaust gas of the automobiles, and further extending the effective duration of the exhaust gas purifying agent for automobiles by a simple method of spraying the exhaust gas purifying agent for automobiles using only natural ingredients on the air filter.

The problem of the present invention can be solved by using a liquid containing a) tourmaline fine powder, b) porous material fine powder, c) fucoidan extracted from seaweeds, d) amino peptides and/or alginic acids extracted from seaweeds in water as the exhaust as purifying agent for automobiles by spraying on the air filter of automobiles.

The present disclosure describes hybrid binary catalysts (HBCs) that can be used as engine aftertreatment catalyst compositions, specifically 4-way catalyst compositions. The HBCs provide solutions to the challenges facing emissions control. In general, the HBCs include a porous primary catalyst and a secondary catalyst. The secondary catalyst partial coats the surfaces (e.g., the internal porous surface and/or the external surface) of the primary catalyst resulting in a hybridized composition. The synthesis of the HBCs can provide a primary catalyst whose entire surface, or portions thereof, can be coated with the secondary catalyst.