A device for catalytic conversion of carbon dioxide (CO.sub.2) includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, each conductive projection of the array of conductive projections having a semiconductor composition, and a plurality of nanoparticles disposed over the array of conductive projections, each nanoparticle of the plurality of nanoparticles being configured for the catalytic conversion of carbon dioxide (CO.sub.2). Each nanoparticle of the plurality of nanoparticles includes a metal sulfide, the metal sulfide including a d-block metal.

Electrosynthesis of oxirane can include contacting a halide electrolyte with an anode that includes an electrocatalyst comprising iridium oxide loaded with a period-6 metal oxide and provided on a metal substrate. The cathode can be operated under ORR conditions. The electrochemical system can also be provided as an integrated system that includes CO.sub.2 electroreduction to produce ethylene and formation of hypochlorous acid using the electrocatalyst, followed by contact of the ethylene and the hypochlorous acid to form ethylene chlorohydrin which is, in turn, contacted with OH.sup.− ions to produce oxirane.

Electrosynthesis of oxirane can include contacting a halide electrolyte with an anode that includes an electrocatalyst comprising iridium oxide loaded with a period-6 metal oxide and provided on a metal substrate. The cathode can be operated under ORR conditions. The electrochemical system can also be provided as an integrated system that includes CO.sub.2 electroreduction to produce ethylene and formation of hypochlorous acid using the electrocatalyst, followed by contact of the ethylene and the hypochlorous acid to form ethylene chlorohydrin which is, in turn, contacted with OH.sup.− ions to produce oxirane.

A method for the electrochemical preparation of alkanedicarboxylic acids involves a ring-opening oxidation with a doped Ni(O)OH foam electrode in an aqueous alkaline solution.

A method for the electrochemical preparation of alkanedicarboxylic acids involves a ring-opening oxidation with a doped Ni(O)OH foam electrode in an aqueous alkaline solution.

Electrochemical conversion of CO.sub.2 to formic acid or a salt thereof, using an indium containing catalytic electrode, comprising (a) electrochemically converting CO.sub.2 to formic acid or a salt thereof by applying a voltage to an electrochemical cell comprising the catalytic electrode as cathode and an anode, wherein the electrochemical cell is fed with an electrolyte comprising CO.sub.2; and (b) regenerating the catalytic electrode by lowering the voltage and subsequently washing the catalytic electrode with an aqueous liquid and exposing the catalytic electrode to air without applying voltage; and (c) optionally repeating steps (a) and (b).

Electrochemical conversion of CO.sub.2 to formic acid or a salt thereof, using an indium containing catalytic electrode, comprising (a) electrochemically converting CO.sub.2 to formic acid or a salt thereof by applying a voltage to an electrochemical cell comprising the catalytic electrode as cathode and an anode, wherein the electrochemical cell is fed with an electrolyte comprising CO.sub.2; and (b) regenerating the catalytic electrode by lowering the voltage and subsequently washing the catalytic electrode with an aqueous liquid and exposing the catalytic electrode to air without applying voltage; and (c) optionally repeating steps (a) and (b).

The present disclosure relates to electrocatalysts for electroreduction of a carbon-containing gas to produce n-propanol, for example. The electrocatalyst includes a multi-metallic material comprising a primary metal, such as Cu, and a metal dopant, such as Ag, selected and distributed to provide asymmetric active sites that include neighbouring atoms of the primary metal having distinct electronic structures to promote C2-C1 coupling. The electrocatalysts can be bimetallic or bimetallic, for example. The disclosure also relates to manufacturing and using the electrocatalysts, which can be used as a cathodic catalyst to convert CO or CO.sub.2 into multi-carbon products.

The present disclosure relates to electrocatalysts for electroreduction of a carbon-containing gas to produce n-propanol, for example. The electrocatalyst includes a multi-metallic material comprising a primary metal, such as Cu, and a metal dopant, such as Ag, selected and distributed to provide asymmetric active sites that include neighbouring atoms of the primary metal having distinct electronic structures to promote C2-C1 coupling. The electrocatalysts can be bimetallic or bimetallic, for example. The disclosure also relates to manufacturing and using the electrocatalysts, which can be used as a cathodic catalyst to convert CO or CO.sub.2 into multi-carbon products.

A method for making a metal-organic framework, MOF, as nanosheets, includes providing a MXene, wherein the MXene has a general formula of M.sub.n+1X.sub.nT.sub.x, with n=1-3, M represents an early transition metal, X is C and/or N, and Tx is surface terminations; providing a ligand; mixing the MXene and the ligand in a vessel; heating the MXene and the ligand in the vessel; and forming the MX-MOF nanosheets. The MX-MOF nanosheets have a thickness less than 10 nm.