The present invention provides an iron-ruthenium dual atom catalyst (FeRu-DAC) and a method for synthesizing the same. The FeRu-DAC comprises iron-ruthenium dual-atom nano-particles dispersed in a nitrogen-doped graphene support. Each iron-ruthenium dual-atom nano-particle include a pair of iron and ruthenium atoms surrounded by four pyridinic-nitrogen atoms. The method uses a two-step pyrolysis approach. The synthesized FeRu-DAC is found to have comparable performances to platinum catalysts for oxygen reduction and evolution reaction.

The present invention provides an iron-ruthenium dual atom catalyst (FeRu-DAC) and a method for synthesizing the same. The FeRu-DAC comprises iron-ruthenium dual-atom nano-particles dispersed in a nitrogen-doped graphene support. Each iron-ruthenium dual-atom nano-particle include a pair of iron and ruthenium atoms surrounded by four pyridinic-nitrogen atoms. The method uses a two-step pyrolysis approach. The synthesized FeRu-DAC is found to have comparable performances to platinum catalysts for oxygen reduction and evolution reaction.

The disclosure provides a porous manganese-containing Fenton catalytic material and a preparation method and use thereof. The porous manganese-containing Fenton catalytic material according to the disclosure includes particles with a cluster structure and the particles with the cluster structure include a porous-structure calcium oxide and two-dimensional nanosheets of a MnCa compound on a surface of the porous-structure calcium oxide.

The present invention generally relates to a process for synthesizing a graphene oxide quantum dots-iron phthalocyanine (FePc-GOQDs) nanocomposite with enhanced electrochemical properties, particularly for oxygen reduction reactions (ORR). The process begins by dispersing 500 mg of graphene oxide (GO) in a hydrogen peroxide and deionized water solution in a 1:10 volume ratio, followed by hydrothermal treatment at 180 C. for 8 hours to produce GO quantum dots (GOQDs). The resulting material is freeze-dried to obtain GOQDs powder. Subsequently, 60 mg of GOQDs are combined with 10 mg of iron phthalocyanine (FePc) and 20 mL of dimethyl sulfoxide (DMSO), and the mixture is subjected to microwave irradiation at 500 W and 150 C. for 30 minutes. The resulting composite is rinsed repeatedly with deionized water and ethanol, then dried at 120 C. to yield the FePc-GOQDs nanocomposite. This composite demonstrates superior ORR performance due to strong FeO bonding and optimized electronic interactions.

The present invention generally relates to a process for synthesizing a graphene oxide quantum dots-iron phthalocyanine (FePc-GOQDs) nanocomposite with enhanced electrochemical properties, particularly for oxygen reduction reactions (ORR). The process begins by dispersing 500 mg of graphene oxide (GO) in a hydrogen peroxide and deionized water solution in a 1:10 volume ratio, followed by hydrothermal treatment at 180 C. for 8 hours to produce GO quantum dots (GOQDs). The resulting material is freeze-dried to obtain GOQDs powder. Subsequently, 60 mg of GOQDs are combined with 10 mg of iron phthalocyanine (FePc) and 20 mL of dimethyl sulfoxide (DMSO), and the mixture is subjected to microwave irradiation at 500 W and 150 C. for 30 minutes. The resulting composite is rinsed repeatedly with deionized water and ethanol, then dried at 120 C. to yield the FePc-GOQDs nanocomposite. This composite demonstrates superior ORR performance due to strong FeO bonding and optimized electronic interactions.

A method of making heterogeneous biocatalysts can include admixing a protein dissolved in an aqueous buffer with an imprinting compound dissolved in a water-immiscible imprinting solvent, wherein the imprinting compound is hydrophobic and enters and remains in the active site of the protein due to hydrophobic interaction. A water-miscible organic solvent can then be added to precipitate the protein having the imprinting compound in the active site as an amorphous solid. The precipitate can be separated and lyophilized and then washed to remove the imprinting compound, thereby providing a heterogeneous biocatalyst.

A method of making heterogeneous biocatalysts can include admixing a protein dissolved in an aqueous buffer with an imprinting compound dissolved in a water-immiscible imprinting solvent, wherein the imprinting compound is hydrophobic and enters and remains in the active site of the protein due to hydrophobic interaction. A water-miscible organic solvent can then be added to precipitate the protein having the imprinting compound in the active site as an amorphous solid. The precipitate can be separated and lyophilized and then washed to remove the imprinting compound, thereby providing a heterogeneous biocatalyst.

A hydrogenation catalyst provided in the present application includes a carrier, an active component and an auxiliary agent, in which the carrier has a directional honeycomb pore structure, an average pore size of the honeycomb pore is 5 to 20 m; and the active component and the auxiliary agent are loaded on an outer surface of the carrier and an inner wall of the honeycomb pore, and a catalytic layer is formed on the outer surface of the carrier and the inner wall of the honeycomb pore, and a thickness of the catalytic layer is 30 to 100 nm.

A hydrogenation catalyst provided in the present application includes a carrier, an active component and an auxiliary agent, in which the carrier has a directional honeycomb pore structure, an average pore size of the honeycomb pore is 5 to 20 m; and the active component and the auxiliary agent are loaded on an outer surface of the carrier and an inner wall of the honeycomb pore, and a catalytic layer is formed on the outer surface of the carrier and the inner wall of the honeycomb pore, and a thickness of the catalytic layer is 30 to 100 nm.

The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with nickel nanoparticles dispersed therein, wherein dp, the average diameter of nickel nanoparticles in the non-graphitizing carbon grains, is in the range of 1 nm to 20 nm, D, the average distance between nickel nanoparticles in the non-graphitizing carbon grains, is in the range of 2 nm to 150 nm, and , the combined total mass fraction of metal in the non-graphitizing carbon grains, is in the range of 30 wt % to 70 wt % of the total mass of the non-graphitizing carbon grains, and wherein dp, D and conform to the following relation: 4.5 dp/>D0.25 dp/. The present invention, further, relates to a process for the manufacture of material according to the invention, as well as its use as a catalyst.