37results about "Silve compounds" patented technology

The embodiment of the invention provides a preparation method of octahedral Ag2O nano-enzyme and a method for detecting H2O2 through a colorimetric method, and relates to the technical field of H2O2 detection. The method for detecting H2O2 by using the colorimetric method comprises the following steps: step S11, taking a plurality of centrifugal tubes, adding quantitative Ag2O solution and H2O2 with different concentrations into each centrifugal tube, and uniformly mixing; step S12, adding a NaAc-Hac buffer solution and a TMB (Tetramethylbenzidine) solution into each centrifugal tube treated in the step S11 to form an Ag2O-TMB-H2O2 reaction system, heating the Ag2O-TMB-H2O2 reaction system in each centrifugal tube in a water bath for a preset time, and observing the color change of the solution in each centrifugal tube; and step S13, determining a light absorption value of the Ag2O-TMB-H2O2 reaction system at a preset wavelength through an ultraviolet photometer, and recording data. The method for detecting H2O2 through the colorimetric method has the advantages of being simple in operation process, accurate in detection, visual in result and the like.

Provided is a production method for semiconductor nanoparticles that can exhibit band edge emission at a short peak emission wavelength. The production method for semiconductor nanoparticles involves obtaining a first mixture that includes a Ag salt, an In salt, a compound that includes Ga and S, and an organic solvent and performing a heat treatment on the first mixture at a temperature of 125°C–300°C to obtain first semiconductor nanoparticles.

A sintering powder comprising: a particulate having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent. A sintering paste and sintering film comprising the sintering powder. A method for making a sintered joint by sintering the sintering powder, paste, or film in the vicinity of two or more workpieces.

The present invention relates to a nanoparticle system comprising a metal selected from silver and gold, coated with polyethylene glycol (PEG) and functionalised with a polyphenol organic acid selected from caffeic acid, gallic acid and ferulic acid. The present invention also relates to a method for manufacturing said nanoparticle system and to the therapeutic and cosmetic use of said nanoparticle system.

The invention provides a deleading agent FT236 and a preparation method and application thereof, the deleading agent FT236 is prepared by taking cellulose nanocrystals CNC as a matrix, diethylenetriamine pentaacetic acid DTPA as a collecting agent, gamma-mercaptopropyltrimethoxysilane MPTMS as a cross-linking agent and chitosan quaternary ammonium salt HTCC as a flocculating agent through the steps of main reaction and post-treatment. The nano structure of the CNC substrate can uniformly load DTPA and MPTMS to provide a stable framework; a collecting agent DTPA is extremely high in chelating capacity for lead ions and is not combined with silver ions, and loss of precious metal is avoided; mPTMS can strengthen the structural stability of the medicament; the HTCC has flocculation activity and can promote agglomeration of the nanoparticles.

This invention relates to the field of nanocomposite materials technology, specifically to a carbon-based silver sulfide composite aerogel with synergistically enhanced light-harvesting and biofouling resistance, its preparation method, and its applications. The method involves pouring a chitosan-graphene solution into a polystyrene mold and using different cryogenic casting methods to obtain chitosan-graphene aerogels with different orientations. Carbonization under a N2 atmosphere yields carbon-based aerogels with different structures. Immersion in a tannic acid-Tris solution allows for the adsorption of tannic acid molecules. After washing with deionized water, the aerogels are immersed in a silver nitrate solution to form tannic acid-silver ion complexes. Further washing with deionized water and immersion in a thioacetamide solution yields carbon-based silver sulfide composite aerogels with different structures. This method solves the problem of performance loss due to biofouling in carbon-based three-dimensional porous materials. The carbon-based silver sulfide aerogel exhibits superior light absorption and photothermal properties compared to carbon-based zinc oxide aerogels, overcoming the problem of weakened evaporation performance in conventional anti-biofouling designs.

The invention belongs to the technical field of conveying, and particularly relates to an accurate matching conveying device for silver nitrate production and a production process. The invention provides an accurate proportioning and conveying device for silver nitrate production, which comprises a metering pump, a water outlet end of which is provided with a connecting pipe communicated with an accommodating tank; the adjusting assembly is hinged to the water outlet of the connecting pipe, and the adjusting assembly is suitable for opening and closing the connecting pipe; when the metering pump conveys liquid into the containing tank, the fluid pushes the adjusting assembly to turn over outwards. The adjusting assembly is suitable for blocking the water flow direction at the water outlet of the connecting pipe; when the metering pump stops working, the adjusting assembly is suitable for sealing the water outlet so that the connecting pipe can be filled with liquid. When the metering pump conveys liquid into the containing tank, the adjusting assembly can adjust the water flow direction of the liquid, and the situation that the liquid is splashed out of the containing tank due to too large pressure is avoided; and when the metering pump stops working, the volume of the liquid actually flowing into the accommodating tank can be accurately metered, so that the conveying and metering accuracy is improved.

Provided are a superatomic material, as well as a sol, a preparation method therefor, and application thereof. The superatomic material comprises a carrier and superatoms doped in the carrier, the superatoms being one or more of silver, copper, zinc superatoms and rare earth element superatoms, the scale of superatoms being 100-3000 pm, and the carrier being an inorganic carrier. The superatomic material and the sol have superior antimicrobial and antiviral properties, have a long service life, and are environmentally friendly.

The present invention provides an easy and scalable process for producing a compound of formula (I): N(2y / z)[Mx(GO3)y](I), wherein [Mx(GO3)y] is an anion, wherein Mx is an Atomic Quantum Cluster (AQC) consisting of x number of zero valent metal atoms; wherein G is Si or Ti; and y is an integer selected from 1, 2, 3, 4, 5 and 6; and wherein the compound of formula (I) has no net charge. In addition, the present invention is directed to a composition comprising the compound of formula (I), a process for producing the compound of formula (I); the uses of the compound of formula (I) and the compound of formula (I) for use as a medicament, its second medical uses, a pharmaceutical composition, kit-of-parts and an apoptotic agent comprising said compound of formula (I).

Particular embodiments may provide an anode material, comprising a compound of formula Li2—X—Y, wherein: X and Y are each independently a metal atom or a metalloid atom; the anode material has a discharge potential of less than about 0.4 V vs. Li / Li+; and the molar ratio of Li:X:Y is 2:1:1.

A method to synthesize a silver nanohybrid material. The method includes mixing a nitrate solution with a citrate solution to form silver nanoparticles (AgNPs). The method further includes esterifying a first mixture including octadecanoic acid, octadec-9-enoic acid, and octadeca-9,12-dienoic acid with caffeic acid in the presence of an acid catalyst and a solvent to form an unsaturated carboxylic acid mixture including first, second, and third acrylic acid derivatives. The method includes reacting the unsaturated carboxylic acid mixture with ethylene glycol to form a second mixture including first, second, and third ester derivatives. The method further includes mixing the AgNPs with the second mixture to form a third mixture. The method includes evaporating water from the third mixture to form the silver nanohybrid material. The silver nanohybrid material includes a AgNP core covered with the first, second, and third ester derivatives bonded to the AgNP core.

A sintering powder comprising:a particulate having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent.

The present application relates to a nanocomposite preparation apparatus and a nanocomposite prepared using same, and a nanocomposite preparation apparatus of the present application can prepare a nanocomposite having excellent stability by reducing toxicity while maintaining antibacterial properties of conventional antibacterial metals.

This invention provides a method for preparing axially periodic core-shell heterojunction nanostructures. First, Al-M nanowires with endpoints are obtained using a catalytic growth method. Then, the endpoints A1 of the Al-M nanowires are removed using alkylphosphine to obtain pure colloidal M nanowires. Next, a silver source solution is mixed with a dispersion of the pure colloidal M nanowires for an ion exchange reaction to obtain M@A2 uniform core-shell heterojunction nanowires. Finally, the M@A2 core-shell nanowires are dispersed in a solvent and subjected to heat treatment. The Rayleigh fluid instability in inorganic solids causes deformation, leading to structural evolution of the uniform core-shell heterojunction nanowires and the formation of axially periodic core-shell heterojunctions. Compared with existing technologies, this invention is the first to utilize the principle of Rayleigh fluid instability in inorganic solids to precisely synthesize axially periodic nanostructures with adjustable size and periodicity, opening a new avenue for the design and synthesis of axially periodic nanostructures.

The invention is directed to a composition of metal particles and methods of manufacturing and using the composition in the treatment of microbial infections and cancer. The particles can be nanoparticles having coupled thereto at least one of a surfactant, an antibiotic, and a drug. The particles of the invention achieve enhanced stability, enhanced cytotoxicity, and enhanced antimicrobial activity through novel combinations of metals, surfactants, antibiotics, and drugs.

Polymer compositions incorporating metal nanoparticles and medical devices or other products made therefrom are disclosed. The disclosed polymer compositions can be used to form medical devices, including implantable medical devices, with effective antimicrobial properties. The disclosed polymer compositions incorporate metal nanoparticles that function without releasing metal (e.g., silver) ions. The polymer composition may have anti-UV properties imparted by metal nanoparticles.

The application discloses a kind of lead-free halide Cs (Ag 1‑ x Cu x )2I3 Preparation and application, belong to the field of luminescent material.The application has prepared a kind of Cu + And Ag + Doped Cs (Ag 1‑x Cu x )2I3 Lead-free halide, preparation method is: first, CsI, AgI and CuI are dissolved in N, N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) mixed solvent;It is heated and stirred for 6 hours under 20~90 ℃, makes it completely dissolved;Then, titration is carried out with methanol, when white powder appears, stop titration;Then filter with filter head, the transparent solution after filtering is injected into beaker, and tin paper and paraffin film with small holes are sealed to the mouth of beaker;Finally, growth device is placed into sealed large beaker with methanol, keeps 2~7 days under 40~80 ℃, can obtain Cs (Ag 1‑x Cu x )2I3 Crystal;The Cs (Ag 1‑x Cu x )2I3 Crystal prepared can be applied to the degradation of organic pollutants.

A method and kit for inhibiting microbial proliferation in a fuel container are disclosed. The method involves introducing antimicrobial particles designed to be trapped at the fuel-water interface by interfacial tension, thereby concentrating antimicrobial agents at a primary site of microbial growth. These particles release antimicrobial ions into the water phase, creating a growth inhibition zone that can extend into the sludge zone. A kit is also provided, including at least two separate containers of particles being a denser type that settles and remains at the tank bottom and a lighter type that settles but is subsequently lifted to the interface upon water accumulation.

A method and kit for inhibiting microbial proliferation in a fuel container are disclosed. The method involves introducing antimicrobial particles designed to be trapped at the fuel-water interface by interfacial tension, thereby concentrating antimicrobial agents at a primary site of microbial growth. These particles release antimicrobial ions into the water phase, creating a growth inhibition zone that can extend into the sludge zone. A kit is also provided, including at least two separate containers of particles being a denser type that settles and remains at the tank bottom and a lighter type that settles but is subsequently lifted to the interface upon water accumulation.

The invention is directed to a composition of metal particles and methods of manufacturing and using the composition in the treatment of microbial infections and cancer. The particles can be nanoparticles having coupled thereto at least one of a surfactant, an antibiotic, and a drug. The particles of the invention achieve enhanced stability, enhanced cytotoxicity, and enhanced antimicrobial activity through novel combinations of metals, surfactants, antibiotics, and drugs.

The invention relates to metal nanoparticles which comprise a metal and a capping agent coordinated to the metal, wherein the capping agent is a salt of a cationic compound capable of absorbing visible light. It also relates to semiconductor metal oxide nanoparticles which comprise the metal nanoparticles, to a functionalised material comprising the semiconductor metal oxide nanoparticles, and to a photocatalytic paint which comprises either the semiconductor metal oxide nanoparticles or the functionalised material. The invention also relates to processes for the preparation of all these materials, and to the use of the semiconductor metal oxide nanoparticles or the functionalised material comprising them as biocides; particularly for the treatment or prevention of a viral disease or a bacterial infection; for removing Volatile Organic Compounds (VOCs) from of air and water supplies, and as a photocatalyst for water splitting.

The invention discloses a preparation method of ultra-pure electronic-grade silver nitrate, and relates to the technical field of precious metal fine chemical engineering and electronic material preparation. Efficient preparation is achieved through the whole-process optimization process of catalytic dissolution assisting-gradient temperature control silver dissolution, composite purification system synergistic ceramic membrane filtration, gradient pressure reduction-ultrasonic assisted crystallization, closed-loop waste gas treatment, low-temperature pulse drying and multi-stage recovery and AI intelligent quality control. Under the optimization of key parameters, the content of silver nitrate in the product reaches 99.996%, and the silver recovery rate reaches 99.970%. The method has the advantages of resource recycling, low energy consumption and stable quality, and can meet the strict demand of large-scale production of electronic materials on ultra-pure silver nitrate.

The invention provides a preparation method and application of an epitaxial interface metal / semiconductor heterojunction, and belongs to the field of preparation of nano materials. The method comprises the following steps: providing a semiconductor / semiconductor heterojunction as a template, and then preparing a metal / semiconductor nano heterojunction material with a high-yield epitaxial connection interface through a ligand-assisted chemical conversion method, thereby avoiding the formation of a non-epitaxial interface due to macrolattice mismatch in the direct growth process of metal and a semiconductor. The controllability of a metal and semiconductor interface structure is shown; the metal / semiconductor heterojunction nano material of the epitaxial interface shows the reduction performance obviously superior to that of a metal / semiconductor heterojunction material of a non-epitaxial interface when selectively irradiated by plasmon exciting light with the same intensity. The invention develops a ligand-assisted chemical conversion synthesis strategy, and provides a new way for designing and developing a metal / semiconductor heterojunction nano material with a controllable interface structure.

To provide semiconductor nanoparticles that exhibit a band edge emission and have a peak emission wavelength at short wavelengths.SOLUTION: A semiconductor nanoparticle comprises Ag, In, Ga, and S, features a chalcopyrite-type crystal structure, emits light with an emission peak wavelength in the range of 500 nm or more and less than 590 nm under light exposure, and exhibits an exciton peak in the absorption spectrum in the range of 450 nm or more and less than 590 nm.SELECTED DRAWING: Figure 4

Disclosed is a compound of formula (I), a hydrate form, an anhydrous form or a salt form thereof, wherein M, X and n are as disclosed herein. The compounds may be used to modulate the activity of the aromatic hydrocarbon receptor (AhR) and to treat diseases associated with modulation of AhR activity. Also disclosed are pharmaceutical compositions containing the compounds of Formula (I), hydrate forms, anhydrous forms or salt forms thereof. (I)

The invention relates to an aqueous solution of AuCl3×2H2O or HAuCl4×4H2O, ZnCl2 or ZnSO4, and AgNO3 having an Au3+ concentration of 0.8 mM-1.6 mM, a Zn2+ concentration of 15 μM-50 μM, and an Ag+ concentration of 5 μM-50 μM. The invention extends to a kit comprising a solution of the invention, a method of preparing said solution, and the use of a solution of the invention, a solution prepared by a method of the invention, or a kit of the invention in predicting and / or diagnosing and / or monitoring a neurocognitive disorder of the Alzheimer's disease spectrum. The invention extends to a method for predicting and / or diagnosing and / or monitoring a neurocognitive disorder of the Alzheimer's disease spectrum in a patient comprising contacting a tear sample from the patient normalised for protein concentration with a solution of the invention; applying an amount of the tear sample thus obtained to a surface; allowing the tear sample to dry; and drawing a conclusion based on the pattern of the thus obtained dried tear sample, whether the patient is at risk of or suffers from a neurocognitive disorder of the Alzheimer's disease spectrum.

A method to synthesize a silver nanohybrid material. The method includes mixing a nitrate solution with a citrate solution to form silver nanoparticles (AgNPs). The method further includes esterifying a first mixture including octadecanoic acid, octadec-9-enoic acid, and octadeca-9,12-dienoic acid with caffeic acid in the presence of an acid catalyst and a solvent to form an unsaturated carboxylic acid mixture including first, second, and third acrylic acid derivatives. The method includes reacting the unsaturated carboxylic acid mixture with ethylene glycol to form a second mixture including first, second, and third ester derivatives. The method further includes mixing the AgNPs with the second mixture to form a third mixture. The method includes evaporating water from the third mixture to form the silver nanohybrid material. The silver nanohybrid material includes a AgNP core covered with the first, second, and third ester derivatives bonded to the AgNP core.

The invention relates to the technical field of ruthenium noble metal catalysts, in particular to a preparation method of a ruthenium nitrosyl nitrate solution and the ruthenium nitrosyl nitrate solution. A preparation method of a ruthenium nitrosyl nitrate solution comprises the following steps: step A, dissolving ruthenium trichloride hydrate in a nitric acid solution, stirring in an ice-water bath, and introducing mixed gas of nitric oxide and nitrogen dioxide; and step B, heating, stirring and refluxing the solution obtained in the step A, and keeping introducing a mixed gas of nitric oxide and nitrogen dioxide during refluxing to obtain the nitric acid solution of ruthenium nitrosyl chloride. According to the preparation method of the ruthenium nitrosyl nitrate solution, the positive reaction of ruthenium nitrosyl chloride can be promoted, the formation of the intermediate ruthenium nitrosyl chloride is ensured, the yield of ruthenium nitrosyl nitrate is further effectively improved, the raw material cost is low, and the method is suitable for industrial production. The technical problems that an existing preparation method of the ruthenium nitrosyl nitrate solution is low in yield, and ruthenium nitrosyl nitrate is high in price are solved.

To provide a silicon compound coated-metal fine particle having controlled properties.SOLUTION: The present invention provides a silicon compound coated-metal fine particle in which the surface of a metal fine particle composed of at least one metal element or metalloid element is at least partially coated with a silicon compound. A percentage of Si-OH bonds included in the silicon compound coated-metal fine particle is controlled in a range of 0.1% or more and 70% or less.SELECTED DRAWING: Figure 1

The invention discloses a silver sulfate purification method and circulation system, and the purification method comprises the following steps: S1, adding silver carbonate into industrial silver sulfate slurry, carrying out gradient temperature control and stirring reaction until the pH value of the system is neutral, and obtaining deacidified slurry; s2, carrying out solid-liquid separation on the deacidified slurry to obtain a purified silver sulfate solid and a silver-containing mother solution; s2, the silver-containing mother liquor is subjected to electrolysis-carbonation treatment, regenerated silver carbonate is obtained, and the regenerated silver carbonate is reused in the step S1; according to the method, acid impurities are converted into silver sulfate in a targeted mode through silver carbonate, a silver resource closed-loop cycle is formed by coupling a mother liquor electrolysis-carbonation regeneration technology, silver carbonate is used as an acid removing agent, sulfuric acid is accurately removed and converted into silver sulfate in situ, a by-product CO2 is decomposed to drive reaction kinetics, and silver sulfate is obtained. Acid impurities in industrial silver sulfate are efficiently removed, closed-loop recovery of silver resources is achieved, and the production cost and environmental pollution are reduced.