A composite catalyst includes a nickel foam and cobalt, copper, or both electrodeposited on the nickel foam. Making the composite catalyst includes contacting the nickel foam with an aqueous solution comprising copper, cobalt, or both, and electrodepositing nanodomains of copper, cobalt, or both, respectively, on the nickel foam. Electrochemically converting nitrate to ammonia includes contacting an electrode and a cathode comprising the composite catalyst in an electrochemical cell with an aqueous solution including nitrate, adsorbing the nitrate onto the copper, the cobalt, or both, reducing the nitrate to yield nitrite, and reducing the nitrite to yield ammonia.

A non-aqueous metal catalytic composition includes (a) a silver complex comprising reducible silver ions, (b) an oxyazinium salt silver ion photoreducing agent, (c) a hindered pyridine, (d) a photocurable component, a non-curable polymer, or combination of a photocurable component and a non-curable polymer, and (e) a photo sensitizer different from all components (a) through (d) in the non-aqueous metal catalytic composition, in an amount of at least 1 weight %. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.

An object of the present invention is to provide an exhaust gas purification catalyst, and a production method thereof, that improves NOx purification performance in a lean atmosphere. The method of the present invention for producing an exhaust gas purification catalyst comprises preparing fine composite-metal particles, each of which contains W and Rh, by carrying out sputtering on a target material containing W and Rh; and supporting the fine composite-metal particles on a powder carrier.

In an example of a method for forming a catalyst, a polymeric solution including a platinum group metal (PGM) is exposed to electrospinning to form carbon-based nanofibers containing PGM nanoparticles therein. An outer surface of the carbon-based nanofibers containing the PGM nanoparticles is coated with a metal oxide or a metal oxide precursor. The carbon-based nanofibers are selectively removed to form metal oxide nanotubes having PGM nanoparticles retained within a hollow portion thereof.

The present invention provides a catalyst defined in part by a conductive substrate; a film overlaying a surface of the substrate; and a plurality of metal clusters supported by the layer, wherein each cluster comprises between 8 and 11 atoms. Further provided is a catalyst defined in part by a conductive substrate; a layer overlaying a surface of the substrate; and a plurality of metal clusters supported by the layer, wherein each cluster comprises at least two metals.

This invention relates to a metal catalyst, a manufacturing method of the metal catalyst, and an electrochemical reduction method.

The metal catalyst is manufactured by a method comprising providing a conductor to one side of an insulator, providing a fluid including a metal ion and an electron mediator to the other side of the insulator and providing a voltage to the conductor.

The electrochemical reduction method comprises providing a conductor to one side of an insulator, providing a fluid including reduction material and an electron mediator to the other side of the insulator and providing a voltage to the conductor.

A non-aqueous metal catalytic composition includes (a) a silver complex comprising reducible silver ions, (b) an organic phosphite, (c) an oxyazinium salt silver ion photoreducing agent, (d) a hindered pyridine, (e) a photocurable component, a non-curable polymer, or combination of a photocurable component and a non-curable polymer, and (f) a photosensitizer different from all components (a) through (e) in the non-aqueous metal catalytic composition, in an amount of at least 1 weight %. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.

A nanofibrous catalyst for in the electrolyzer and methods of making the catalyst. The catalysts are composed of highly porous transition metal carbonitrides, metal oxides or perovskites derived from the metal-organic frameworks and integrated into a 3D porous nano-network electrode architecture. The catalysts are low-cost, highly active toward OER, with excellent conductivity yet resistant to the oxidation under high potential operable under both acidic and alkaline environments.

Catalytic coatings and techniques for applying the catalytic coatings may be utilized in connection with a number of engine system components including fuel injectors components, exhaust gas recirculation (EGR) valve components, EGR cooler components, piston components, spark plugs, engine valves (intake valves and exhaust valves), engine valve seats, oxygen sensors, NOx sensors, and particulate sensors.

The design of bifunctional catalysts for water splitting by modifying the electronic structure of the catalyst. That bifunctional catalyst that is synthesized is a quaternary FeNiPSe nanoporous film (FeNiPSe NF). A self-supported FeNiPSE NF is synthesized and used as an anode and a cathode in a two-electrode electrolytic cell. The cell is subjected to a water source, and the FeNiPSe NFs split the water molecules to produce hydrogen fuel. The slightly oxidized FeNiPSe surface serves as an active site for oxygen evolution reactions, making hydrogen evolution reactions and oxygen evolution reactions well-balanced, thereby improving electrolysis efficiency.