23results about "Phosphorus preparation" patented technology

The present invention provides a solid electrolyte material that can suppress a decrease in filling efficiency. [Solution] A solid electrolyte material comprising a sulfide solid electrolyte containing lithium, sulfur, and phosphorus, and an organic compound, wherein the organic compound has two or more benzene rings, and the melting point of the organic compound is 82°C or lower.

The invention relates to a method for recovering silicon in the form of silicon tetrachloride, in which biochar having a silicon content of at least 1% by weight, expressed as% by weight of elemental silicon, is reacted with elemental chlorine at a temperature of 350 to 900 DEG C and the formed silicon tetrachloride is separated from the exhaust gas stream, preferably by condensation.

A method for producing phosphorus in which a reaction for forming gaseous phosphorus (g) by bringing phosphorus oxide generated by heating a liquid phosphoric acid compound into contact with a carbon material to reduce the phosphorus oxide and for condensing the gaseous phosphorus (g) to obtain liquid phosphorus (L) is conducted by a flow reaction with a nonoxidizing gas flow, wherein the reduction reaction of the phosphorus oxide is conducted in a carbon material-packed bed, and the condensation of the formed gaseous phosphorus (g) is substantially conducted in a condensation accelerator-packed bed which is disposed downstream of the carbon material-packed bed in contact with the carbon material-packed bed.

The invention relates to a method for synthesizing black phosphorus - polyglycerol (BP-PG) nanoparticles comprising the step of adding (100) black phosphorus (BP) nanoparticles, glycidol and a plurality of beads (10) to a chamber (21) of a milling device (20) and the step of rotating (200) the chamber (21) over a defined period of time. The invention also relates to a method for recovering a precious metal from a precious metal containing matrix comprising the step of providing (300) the precious metal containing matrix in the form of a solution containing dissolved precious metal ions and the step of adding (400) black phosphorus - polyglycerol (BP-PG) nanoparticles to the solution, wherein the black phosphorus - polyglycerol (BP-PG) nanoparticles are synthesized using the method for synthesizing black phosphorus - polyglycerol (BP-PG) nanoparticles.

This invention relates to the field of oil additives for power generation, specifically a method for in-situ preparation of black phosphorus nanoparticles (BPNPs) using PVA / PAAM interpenetrating network hydrogel as a microreactor and its application as a wear-resistant additive in lubricating oils. The confinement effect of the interpenetrating network hydrogel results in uniform BPNP size and high crystallinity, thus endowing BPNPs with excellent air / water / oil stability, with an oxidation rate of <5% within 7 days. Swelling allows RP / KI to permeate uniformly and be physically embedded in the network. Subsequently, under a nitrogen protective atmosphere, photolysis of iodine ions generates solvated electrons (e). ‑ (aq) restores RP to P ‑ P ‑ The BP crystal nucleus is formed by recombination, and the IPN three-dimensional nanochannels (pore size 30~120nm) confine and inhibit excessive growth of the crystal nucleus. At the same time, the PVA hydroxyl groups and PAAm amide groups passivate the BP surface in situ through hydrogen bonding / coordination, preventing oxidation.

The application relates to a method for recovering liquid-phase phosphorus and acetic acid by co-hydrothermal carbonization of fish paste and cellulose acetate, and belongs to the technical field of waste resource utilization and clean energy preparation. The method comprises the following steps: (1) mixing fish paste and cellulose acetate according to a mass ratio of 1:3-3:1, and carrying out hydrothermal carbonization at 200-240 DEG C for 0.5-2 h; (2) carrying out solid-liquid separation on the hydrothermal carbonization product to obtain liquid products and solid products; (3) recovering liquid-phase phosphorus and acetic acid from the liquid products; and (4) using the dried solid products as clean solid fuel. The application realizes the collaborative treatment of fish paste and cellulose acetate through a single process, simultaneously completes the recovery of phosphorus and acetic acid and the preparation of solid fuel, does not need to add chemicals, and has the advantages of simple process flow, low cost and environmental friendliness.

The invention relates to a method for recovering phosphorus in the form of chloride, in which sewage sludge ash having a phosphorus content of at least 2% by weight, expressed as the weight percent of elemental phosphorus in the ash, is reacted with elemental chlorine in the presence of a carbon source at a temperature of 350 DEG C to 900 DEG C, and the formed phosphorus chloride is removed from the exhaust gas stream.

The present application belongs to the technical field of lubrication, and particularly relates to an organic-inorganic superlattice structure black phosphorus material and a preparation method and application thereof, and a lubricating coating and a preparation method thereof. The organic-inorganic superlattice structure black phosphorus material is obtained by an electrochemical intercalation reaction of black phosphorus as a negative electrode and a positive electrode in an electrolyte. The electrolyte comprises hexadecyl trimethyl ammonium bromide and an organic solvent. The hexadecyl trimethyl ammonium cation is embedded into the interlayer of the black phosphorus by an electrochemical intercalation strategy to form a CTA-BP organic-inorganic superlattice structure, and the black phosphorus is modified in lubricating performance. The technical defects of the prior art, such as the difficulty in balancing the low friction and the anti-wear performance of the black phosphorus, the poor chemical stability, and the short service life, are effectively solved. Meanwhile, the problems of the traditional black phosphorus friction modification technology, such as the high cost, the complex process, and the limited application, are overcome.

This invention relates to an in-situ stabilization method and apparatus for atomic-level manufacturing of two-dimensional black phosphorus based on controllable micro-explosion, belonging to the field of two-dimensional semiconductor materials and atomic-level precision manufacturing technology. This invention uses a phosphorus-based energetic compound as a phosphorus source-energy integrated precursor. Under the constraint of an array-type nano-confined microcavity, a controllable micro-explosion is synchronously triggered by a nanosecond laser. Combined with in-situ coating of hexagonal boron nitride and directional electric field modulation, the directional self-assembly of nanosecond-level highly stable two-dimensional black phosphorus is achieved, completely solving the industry pain points of easy oxidation and poor stability of traditional black phosphorus. The preparation cycle of this invention is reduced to less than 10 minutes, the product exhibits high room temperature carrier mobility, and a stable storage time in air of ≥30 days. It is 100% compatible with existing semiconductor production lines and is suitable for large-scale manufacturing in fields such as high-speed photodetectors, millimeter-wave devices, and biosensors.

The application discloses a preparation method of a black phosphorus / metal organic framework composite water splitting electrocatalyst, adopts an electrochemical exfoliation method and an ultrasonic exfoliation method in combination to prepare an ultrathin thin layer BP (FL-BP); the ultrathin thin layer BP is added into a methanol solution of cobalt acetate, a 2-methyl imidazole methanol solution is added while stirring, and then standing, centrifugation, alcohol washing and drying are carried out; the obtained product is heat treated under an inert atmosphere to obtain the black phosphorus / metal organic framework composite water splitting electrocatalyst; the application has the advantages of mild and safe reaction conditions, high product yield, low production cost, good economic benefits and application prospect; the obtained black phosphorus / metal organic framework composite water splitting electrocatalyst has a water splitting potential as low as 1.64 V under a current density of 10 mA cm ‑2 After 2000 cycles of water splitting electrocatalysis test, the overpotential only increases by 9 mV, and the defect of poor stability of black phosphorus nanosheet is overcome.

Provided is a method of preparing black phosphorus crystal. First, one area of a double-opening reactor is used as the feedstock area, the other area is used as the nucleation area, and the middle area is used as a transition section, and the feedstock area is sealed, the phosphorus feedstock and the transport agent are weighed and placed inside the feedstock area under an inert atmosphere, then the nucleation area is sealed, the first step of heating reaction is performed in the reactor through an optimized temperature-control program, when the reaction is complete, monoclinic phosphorus crystals are prepared in the feedstock area. Then the nucleation area of the reactor is started, the weighed catalyst is placed inside the feedstock area under an inert atmosphere, and the nucleation area is sealed, and then the second step of a heating reaction is performed in the reactor through an optimized temperature-control program.

BPQDs@Fer1, its preparation method, and applications demonstrate that it can simultaneously scavenge excess ROS and efficiently deliver Fer-1. Through a dual mechanism of ROS scavenging and lipid peroxidation inhibition, it synergistically inhibits ferroptosis, effectively mitigating ischemia-reperfusion injury and subsequent rejection after kidney transplantation. This BPQDs@Fer1 uses black phosphorus quantum dot BPQDs as a carrier, loaded with the ferroptosis inhibitor Ferrostatin-1. The average particle size of the black phosphorus quantum dots is less than 20 nm.

The invention discloses a method for preparing a core-shell structure catalyst and applying the core-shell structure catalyst to black phosphorus crystal preparation, and belongs to the field of material synthesis. The method specifically comprises the following steps: synthesizing a polymer-metal catalyst composite material in an inorganic solvent or an organic solvent, drying, placing red phosphorus, a core-shell structure catalyst and a transport agent at a raw material end according to a certain proportion, and carrying out high-temperature treatment to obtain the high-quality black phosphorus at a nucleation end. Wherein the core-shell structure catalyst takes a polymer as a shell layer and a metal-B as a core, compared with a pure catalyst, the polymer of the shell layer improves the reaction participation temperature of the catalyst, and B in the core further improves the reaction activity of the catalyst metal, so that the problem that the reaction participation temperature of each material in the heating stage is different when black phosphorus is amplified to be prepared to be more than 30kg of a system is solved; therefore, the problems that the materials are not fully contacted in the reaction process, the volatilization rate of the materials is low and the hardening condition is serious are solved. Through construction of the core-shell structure, the material volatilization rate of the raw material end can be further improved, and the black phosphorus crystal quality is improved.

The invention relates to a method for preparing high-yield black phosphorus by using a P-Fe-Sn alloy catalyst based on ferrophosphorus slag, which comprises the following steps: carrying out pickling soaking, reduction heat treatment and purification on ferrophosphorus slag to obtain a Fe-P intermediate, and carrying out melt alloying on the Fe-P intermediate and elemental tin according to a reasonable ratio to obtain the P-Fe-Sn alloy catalyst; red phosphorus is used as a phosphorus source, and under the action of the catalyst, reaction is carried out for 6-24 hours at 400-600 DEG C in an inert atmosphere through a gas-phase transmission method, so that oriented growth of black phosphorus is realized. The phosphorus iron slag is used as a raw material to prepare the efficient catalyst, the phosphorus iron slag is converted into a P-Fe-Sn alloy catalyst with higher value by utilizing the unique chemical thermal stability of iron phosphide and combining with the characteristic of preparing black phosphorus through catalysis of Sn, and the use proportion of the catalyst Sn is reduced; the prepared P-Fe-Sn alloy catalyst has excellent catalytic activity, and high-yield synthesis of black phosphorus can be realized. The black phosphorus prepared by the method is good in quality, high in crystallinity and low in equipment requirement, is suitable for large-scale production, and can provide technical support for industrial application of the black phosphorus.

The invention relates to the technical field of preparation of novel photoelectric semiconductor materials, in particular to a flow field-temperature field coordinated regulation black phosphorus preparation method for short-distance transportation, which adopts a reaction system to realize black phosphorus preparation. The reaction system comprises a multi-temperature-zone pit furnace, a metal reactor and a heat transfer component arranged in the metal reactor; the method comprises the following steps: putting red phosphorus, tin and a tin-iodine compound as preparation raw materials into a metal reactor, and carrying out heat treatment at high temperature by adopting a multi-temperature-zone pit furnace to prepare the black phosphorus. According to the method, the crystallinity and the purity of the product are remarkably improved, the overall energy consumption of the system is reduced while the kilogram-level preparation of the black phosphorus is realized, and a reliable equipment foundation is provided for large-scale and controllable synthesis of the black phosphorus.

The present invention provides a black phosphorus / carbon nanotube composite material, a preparation method therefor, and a use thereof. The preparation method comprises the following steps: (S101) preparing a black phosphorus nanosheet solution by means of a stepwise centrifugation-assisted liquid-phase exfoliation method; (S102) preparing a carbon nanotube solution by means of a liquid-phase exfoliation method; and (S103) preparing a black phosphorus / carbon nanotube composite material by means of a hydrothermal method, wherein the black phosphorus / carbon nanotube composite material prepared by means of a chemical synthesis method comprises black phosphorus and single-walled carbon nanotubes which are closely attached to each other, a three-dimensional network constructed by the carbon nanotubes well covers the surface of black phosphorus nanosheets, and the surfaces of the carbon nanotubes are filled with active electrons, so that a more sensitive detection result can be acquired, the Raman detection limit can be reduced, and the black phosphorus / carbon nanotube composite material is suitable for the detection of urinary tract bacteria.

The invention relates to a method for synthesizing black phosphorus – polyglycerol (BP- PG) nanoparticles comprising the step of adding (100) black phosphorus (BP) nanoparticles, glycidol and a plurality of beads (10) to a chamber (21) of a milling device (20) and the step of rotating (200) the chamber (21) over a defined period of time. The invention also relates to a method for recovering a precious metal from a precious metal containing matrix comprising the step of providing (300) the precious metal containing matrix in the form of a solution containing dissolved precious metal ions and the step of adding (400) black phosphorus – polyglycerol (BP-PG) nanoparticles to the solution, wherein the black phosphorus – polyglycerol (BP-PG) nanoparticles are synthesized using the method for synthesizing black phosphorus – polyglycerol (BP-PG) nanoparticles.

A method for producing phosphorus in which a reaction for forming gaseous phosphorus (g) by bringing phosphorus oxide generated by heating a liquid phosphoric acid compound into contact with a carbon material to reduce the phosphorus oxide and for condensing the gaseous phosphorus (g) to obtain liquid phosphorus (L) is conducted by a flow reaction with a nonoxidizing gas flow, wherein the reduction reaction of the phosphorus oxide is conducted in a carbon material-packed bed, and the condensation of the formed gaseous phosphorus (g) is substantially conducted in a condensation accelerator-packed bed which is disposed downstream of the carbon material-packed bed in contact with the carbon material-packed bed.

The present invention provides an ultra-fine nanophosphorus-carbon negative electrode material prepared on the basis of in-situ high-temperature phase change in confined microcavities, and a preparation method therefor. The method aims at solving the problems of large volume expansion, poor conductivity, poor cycle stability and the like when phosphorus is used as a negative electrode material of an alkali metal-ion battery. By constructing confined microcavities on the surface of a porous conductive material and using a transient high-temperature phase change technique, phosphorus can be uniformly distributed and nanocrystallized. The method comprises: mixing phosphorus and a conductive porous material in a solvent, and then performing sand milling; forming solid particles by means of reforming and granulation; constructing confined microcavities by means of coating treatment; performing transient heating in a high-temperature apparatus, so that a phosphorus source is rapidly sublimated and uniformly distributed; and finally, performing heat preservation and conversion in a sealed container. In this way, the stability of the material is improved. The method not only enhances the utilization rate of phosphorus and the conductivity of the material, but also prolongs the service life of a battery and enhances the energy density of the battery, and has the advantages of simplifying a production process and reducing the production costs.

A phosphorus-carbon composite material includes: phosphorus atoms; and carbon atoms, in which a content ratio of the phosphorus atoms in the phosphorus-carbon composite material is 10 mass% or more and 95 mass% or less, a content ratio of the carbon atoms in the phosphorus-carbon composite material is 5 mass% or more and 90 mass% or less, and a ratio WL620 / WL780 of a weight loss ratio WL620 at a measurement temperature of 620°C and a weight loss ratio WL780 at a measurement temperature of 780°C, which are obtained by thermogravimetric measurement under the following conditions, is 0.1 or more and 0.9 or less. (Thermogravimetric measurement) 10 mg of the phosphorus-carbon composite material is accurately weighed to prepare a sample, and using a thermogravimetric measuring device, a weight change when the sample is heated from 50°C to 780°C at a temperature rising rate of 10 °C / min in N2 is measured. (Weight loss ratio) A ratio of a weight of the sample at the measurement temperature to a weight of the accurately weighed sample is defined as a weight loss ratio (weight%) at the measurement temperature.

The invention provides a phosphorene material, a processing method, a device structure, a preparation method and manufacturing equipment, and the processing method comprises the steps: placing the phosphorene material in a plasma processing cavity, introducing nitrogen to generate nitrogen plasma, and processing the phosphorene material through the nitrogen plasma. The prepared surface nitrogen modified two-dimensional phosphorene nanosheet has high air stability, and the stability in air can reach 60 days or above. The surface-nitrogen-modified two-dimensional phosphorene nanosheet prepared by the method has an atomic-scale flat surface, and the atomic-scale flat surface can be kept in the air for more than 60 days.

The invention relates to the technical field of novel photoelectric semiconductor material preparation, in particular to a black phosphorus controllable transportation preparation method based on thermal field induced convection, and the method adopts a reaction system to realize black phosphorus preparation. The reaction system comprises a multi-temperature-zone pit furnace, a metal reactor and a heat transfer component arranged in the metal reactor; the method comprises the following steps: putting red phosphorus, tin and a tin-iodine compound as preparation raw materials into a metal reactor, and carrying out heat treatment at high temperature by adopting a multi-temperature-zone pit furnace to prepare the black phosphorus. According to the method, the crystallinity and the purity of the product are remarkably improved, the overall energy consumption of the system is reduced while the kilogram-level preparation of the black phosphorus is realized, and a reliable equipment foundation is provided for large-scale and controllable synthesis of the black phosphorus.

The present invention provides a solid electrolyte material that can suppress the decrease in ionic conductivity. [Solution] A solid electrolyte material comprising a sulfide solid electrolyte containing lithium, sulfur, and phosphorus, and an organic compound, wherein the organic compound contains a halogen element and has two or more benzene rings, and the ratio of the organic compound to 100% by mass of the solid electrolyte material is 5.37% by mass or less.