13 results about "Porous carbon" patented technology

According to the invention, the porous carbon-coated nano zero-valent iron composite catalyst is prepared by taking a metal skeleton as a precursor, and has excellent catalytic performance in an electro-Fenton process. The synthesis method has the advantages of simplicity and convenience in operation, low equipment requirement, good product performance reproducibility and the like. Due to the synergistic effect of iron and carbon, electron transfer is accelerated, and the catalytic efficiency is remarkably improved. The iron-carbon material has strong magnetism, can be quickly separated in a magnetic field, and is convenient to recover.

The invention discloses a bifunctional adsorbent of N-TiO2 silkworm-excrement porous carbon and a preparation method of the bifunctional adsorbent of the N-TiO2 silkworm-excrement porous carbon. The preparation method comprises the following steps: (1) firstly mixing and putting silkworm excrement and ZnCl2 in a high-temperature tube furnace, introducing a protective gas to purge, then heating to 300 to 700 DEG C to obtain silkworm-excrement porous carbon (SPC) through reaction; (2) adding butyl titanate to a selective alcohol solvent, drop by drop adding to an aqueous suspension containing the silkworm-excrement porous carbon, enabling the butyl titanate hydrolyzed to generate amorphous TiO2, thus obtaining an A-TiO2/silkworm-excrement porous carbon material; (3) carrying out surface modification on the material through a plasma radiation way to obtain an N doped A-TiO2 silkworm-excrement porous carbon material; (4) calcining the material at the temperature of 180 to 500 DEG C, finally obtaining an N-TiO2/SPC bifunctional adsorption material. The bifunctional adsorption material disclosed by the invention is applied to synchronous adsorption and catalytic degradation of VOCs of aldehydes and benzene series.

The invention discloses a method for preparing a micro-mesoporous carbon anode material from an amino acid modified metallic organic framework and application. The method comprises steps of synthesizing the amino acid modified metallic organic framework, pretreating the metallic organic framework material, carrying out a carbonization reaction, and the like, the synthesized metallic organic framework is washed and dried, and high-temperature carbonization treatment is carried out directly, and then a nitrogen doped porous carbon material of a rich micro-mesoporous structure is prepared. Compared with a pure metallic organic framework-based carbon material, the carbon electrode material prepared by using the method has a large specific surface area, a large aperture distribution range and alarge pore volume, and has high activity for electro-catalysis oxygen reduction reactions. Meanwhile, the preparation method is simple and easy to control, gentle in condition, easy in raw material obtaining and good in application prospect.

The invention discloses a porous carbon material prepared by using self-modification of pseudomonas putida and a preparation method and application thereof. Self accumulation PHA of the pseudomonas putida (Pseudomonas putida KT2440, preservation serial number of ATCC No.47054) is regulated and controlled by changing ingredients of a culture medium, and carbonization is carried out by directly adopting thallus collected by centrifugation to prepare the graded porous carbon material without any excitation steps. The germ self-modification derived porous carbon material has a large number of mesopore structures. The porous carbon material is used as an electrode material of a super capacitor, when electric current density is 0.5 A/g, the specific volume of the porous carbon material reaches 298 F/g; and when the electric current density increases by 20 A/g, the specific volume of the porous carbon material maintains by 234 F/g, and good electric capacity and excellent rate performance aredisplayed. The preparation method has the advantages of novelty, simple operation, low manufacturing cost and the like, the prepared material has the characteristics of graded bore diameter, large specific surface area, good electrical conductivity and excellent electrochemical performance, and is an electrode material for the ideal super capacitor or batteries.

The invention relates to a preparation method of a self-supporting porous carbon electrode material, belonging to the technical field of electrode material preparation. The method specifically comprises the following steps: adding acrylamide, N,N'-methylene bisacrylamide, sodium carboxymethyl cellulose, potassium tetraborate and a chemical activator into water to obtain a mixed solution; then adding an initiator, and carrying out a free radical polymerization reaction at 65-75 DEG C to obtain hydrogel; freeze-drying the hydrogel to prepare xerogel; and carbonizing, washing and drying the xerogel to obtain the self-supporting porous carbon electrode material. The self-supporting porous carbon material is prepared from an acrylamide micromolecule raw material through the steps of free radical polymerization, freeze drying, carbonization and the like, the structure and performance of the prepared porous carbon can be conveniently regulated and controlled through reaction conditions, preparation process is simple, convenient and easy to control, and the obtained porous carbon electrode material is large in specific surface area and has excellent capacitance performance.

The invention discloses a fish roe based porous carbon material. Fish roes are pre-carbonized at a low temperature to form a carbon precursor, and the carbon precursor and alkaline inorganic substances are directly mixed to prepare the fish roe based porous carbon material by calcination. A preparation method includes steps: 1) carbon precursor preparation; 2) carbon precursor activation; 3) porous carbon material aftertreatment. In application to an electrode material of supercapacitors, when the current density is 1A g<-1>, and a specific capacitance range is 222-396 F g<-1>. The method is simple in process, convenient to operate and easy to implement, and the prepared fish roe based porous carbon material serving as the electrode material of the supercapacitors is excellent in performance.

The invention provides a three-dimensional bi-continuous porous-carbon-based transition metal porous material and a preparation method thereof. The porous material comprises porous carbon and a three-dimensional bi-continuous transition metal porous material. The preparation method comprises the following steps of pickling zinc powder to remove an oxide film, fine-grinding and screening through aball mill, washing and drying to obtain micron-millimeter-level zinc powder; mixing and grinding the zinc powder and the transition metal powder to obtain zinc-containing transition metal alloy powder, spreading a layer of porous carbon powder on the middle part of the zinc-containing transition metal alloy powder layer, and rolling by a hydraulic press under a room-temperature condition to obtainporous carbon intercalated transition metal/zinc alloy of a sheet layer; and putting the porous carbon intercalated transition metal/zinc alloy of the sheet layer in a vacuum heating system, and evaporating zinc by heating at the high temperature, thereby obtaining the three-dimensional bi-continuous porous-carbon-based transition metal porous material. The three-dimensional bi-continuous porous-carbon-based transition metal porous material adopts room-temperature rolling and vacuum heating to control hole diameters and distribution of holes, has a great specific surface area and high heat conductivity and electrical conductivity, and is wide in range of application.

The invention belongs to the technical field of catalysts, and discloses a photocatalyst transition metal halide molten salt preparation method and application, a low-valence compound stable to air and water is used as a Ti source, transition metal halide is used as molten salt, the Ti source and the molten salt are mixed and ground according to a molar ratio, and a photocatalyst transition metal halide molten salt is obtained; and heating the transition metal halide in an air atmosphere until the temperature is not lower than the melting point of the molten salt, enabling the transition metal halide to be in a molten state, preserving heat, washing with water, and separating to obtain the reduction-state TiO2-x photocatalyst which is rich in Ti < 3 + > and Ov and has excellent visible light response capability. The obtained product has excellent visible light response performance, and the defects that multiple steps are needed for traditional defect-state titanium dioxide preparation, and flammable and explosive reducing gas or other dangerous reducing agents or oxidizing agents are used are overcome; and the adopted Ti source is stable to air and water, so that the defects of adopting an organic solvent and other easily-hydrolyzed Ti sources are completely avoided, and industrialization is facilitated.

The invention provides a heteroatom-doped porous carbon material with a high specific surface area, and a preparation method thereof. The preparation steps are as follows: (1) mixing a copper nanoparticle template with a surfactant and a reaction initiator in water to obtain a precursor mixed solution, then adding a polymer monomer are to carry out a polymerization reaction, and separating a polymer coated with the copper nanoparticle template by centrifugation; (2) performing thermal cracking on the polymer; and (3) treating the carbonized product with an acidic solution to dissolve the copper nanoparticle template, performing centrifugal separation to obtain a precipitate, namely the product, and retaining a supernatant to prepare a new copper nanoparticle template. The heteroatom dopingamount, morphology, particle size, and pore volume of the material provided by the invention are easy to control, and the application in different fields such as new energy materials, electrochemicalmaterials, and biological materials is convenient. In addition, the technical route realizes recycling of the metal nano template, the cost during large-scale production can be significantly reduced,and thereby the technical route has practical application significance.