128 results about "Solvothermal reaction" patented technology

The application relates to an acetic acid-regulated sodium metaaluminate-doped calcium-aluminum-phosphorus defluorination material based on eggshell, a preparation method and application thereof, and belongs to the technical field of defluorination water treatment. The method is as follows: eggshell powder, a phosphorus source and sodium metaaluminate are added into a mixed solvent composed of acetic acid and water, mixed and dispersed to form a uniform reaction system; the pH of the reaction system is adjusted to be alkaline; the adjusted reaction system is transferred into a closed reaction container to perform a solvothermal reaction; after the reaction is completed, the obtained solid product is separated and washed; and the washed product is dried. In the application, acetic acid is used for regulating the dissolution and conversion of the eggshell calcium source and the material crystallization process, sodium metaaluminate is used for introducing aluminum components and adjusting the material structure, so as to construct an Al-Ca-P synergistic defluorination system. The obtained material can be used for removing fluorine ions in fluorine-containing water bodies. The application has the dual characteristics of resource utilization of waste eggshells and preparation of defluorination functional materials, and has the advantages of simple process, easily-obtained raw materials and high application value.

The application discloses a P and O co-doped FeNiRuOx nano catalyst and a preparation method and application thereof, relates to the technical field of electrocatalytic materials, and the catalyst takes Fe, Ni and Ru as metal active centers, reconstructs a surface electronic structure through P and O double anion co-doping, and forms a polygonal nano structure, wherein the mass fraction ranges of Fe, Ni, Ru and P are 5.0-6.0%, 75-78%, 11-12% and 6.5-7.0% respectively. The preparation method comprises the following steps: taking iron acetylacetone, nickel acetylacetone and ruthenium chloride trihydrate as metal sources, synthesizing a precursor through a solvothermal reaction, and realizing P and O co-doping through a sodium hypophosphite assisted solid-phase phosphorization process, and the preparation process is mild. The synthesized catalyst has unique structural advantages, the formed polygonal nano structure has a large specific surface area and rich grain boundary defects, more active sites are exposed, and convenient channels are provided for the mass transfer of reactants and products. The synergistic effect among the polymetals further enhances the catalytic performance.

The application discloses a preparation method of a PPSU-based ZIF-8 double-layer membrane and application of the double-layer membrane in hydrogen separation, and belongs to the technical field of gas separation membranes. The preparation method is as follows: ZIF-8 seeds are embedded in a PPSU matrix solution, then are spin-coated onto the surface of an alpha-Al2O3 carrier to obtain a PPSU-based membrane, and secondary growth of the membrane is carried out through a solvothermal reaction, so that the seeds grow epitaxially, a continuous, dense and defect-free ZIF-8 separation layer is formed on the surface and the near-surface region of the carrier substrate, and the reaction is ended to obtain the double-layer membrane. Through the seed embedding strategy, the interface bonding force between the ZIF-8 layer and the PPSU substrate is significantly enhanced, and the generation of interface defects is effectively inhibited. The double-layer membrane has high permeation flux and high separation selectivity for a H2 / CO2 system, and is particularly suitable for hydrogen separation and purification processes.

This invention belongs to the field of functional polymer composite materials technology, and more specifically relates to a titanium oxide cluster composite fiber membrane with broad-spectrum photoresponse, its preparation method, and its applications. The preparation method includes: using 3-fluorocatechol and titanate as reactants, a solvothermal reaction is carried out under an inert atmosphere to obtain trifluorocatechol-modified titanium oxide cluster crystals; then, these crystals are dissolved with thermoplastic polyurethane particles in an organic solvent to prepare a composite spinning solution, which is then electrospun and dried to obtain the composite fiber membrane. In this fiber membrane, the titanium oxide clusters are uniformly dispersed at the nanoscale, forming a three-dimensional porous network structure with a diameter of 100-1000 nm, exhibiting broad-spectrum strong absorption (300-1000 nm), superhydrophobicity, and excellent photothermal properties. This invention effectively solves the problem of inorganic nanoclusters agglomeration in organic matrices through surface modification, achieving synergistic antibacterial effects through photothermal and photocatalytic processes, and has broad application prospects in medical protection, intelligent thermal management textiles, and environmental purification.

This invention discloses a carbon-coated Fe-Co-Ni-B magnetic micron alloy particle, its preparation method, and its application. The method includes the following steps: dissolving iron acetylacetonate, cobalt acetylacetonate, and nickel acetylacetonate in anhydrous ethanol, then adding cyclopentylboric acid and dissolving it to obtain a mixed solution; subjecting the mixed solution to a solvothermal reaction; and after post-treatment to obtain boron-doped pre-decomposition precursor powder. A glucose aqueous solution is then added dropwise to the pre-decomposition precursor powder under stirring and mixed uniformly to ensure uniform adsorption and coating of the glucose solution on the powder surface. The powder is then dried to obtain a glucose-coated composite precursor. The composite precursor is subjected to programmed temperature heat treatment under an inert or weakly reducing atmosphere to obtain carbon-coated Fe-Co-Ni-B magnetic micron alloy particles with a core-shell structure. This invention successfully prepares a magnetic composite material possessing high saturation magnetic properties, good chemical stability, and controllable magnetic properties.

This invention belongs to the field of analytical detection technology and relates to a method for detecting estradiol using a combination of organometallic framework enrichment and enzyme-linked immunosorbent assay (ELISA). A magnetic organometallic framework solid-phase extractant is used to enrich estradiol in the sample, followed by detection of the enriched estradiol using ELISA. The magnetic organometallic framework solid-phase extractant is prepared by subjecting mercaptoacetic acid-modified Fe3O4 particles, zirconium salt, and 2-amino-terephthalic acid to a solvothermal reaction at 110–130°C for 22–26 hours. The detection method provided by this invention has advantages such as short detection time, high sensitivity, good specificity, and high accuracy, thereby enabling the detection of trace amounts of estradiol in environmental water samples.

This invention discloses an in-situ iodine-generating water purification material, a water purification method, and a method for regenerating the water purification material, solving the technical problems of poor storage stability of elemental iodine, uncontrollable addition, and potential secondary pollution in existing technologies. The in-situ iodine-generating water purification material includes a catalyst and an oxidant, which undergo a catalytic oxidation reaction in organic wastewater to generate elemental iodine; wherein the catalyst includes a metal oxyiodide generated by a solvothermal reaction of a soluble bismuth salt and a soluble alkali metal iodide. The water purification method includes the steps of adding the catalyst and oxidant from the aforementioned in-situ iodine-generating water purification material to the organic wastewater. The method for regenerating the aforementioned in-situ iodine-generating water purification material includes the steps of adding the deactivated water purification material to an iodide solution, reacting for a period of time, and then collecting the solid to obtain the regenerated catalyst.

This invention discloses a SnS / WS2@C composite electrode material, its preparation method, and its application, belonging to the field of tungsten disulfide nanomaterials technology. A precursor solution A is obtained by uniformly dispersing SnCl2·2H2O and CH3CSNH2 in anhydrous ethanol. After a solvothermal reaction, precursor solution A is cooled, centrifuged, washed, and freeze-dried to obtain powder B. Powder B, WCl6, and CH3CSNH2 are uniformly dispersed in anhydrous ethanol to obtain solution C. After a solvothermal reaction, solution C is cooled, centrifuged, washed, and freeze-dried to obtain powder D. Powder D is uniformly dispersed with glucose in deionized water to obtain precursor solution E. After a solvothermal reaction, precursor solution E is cooled, centrifuged, washed, and freeze-dried to obtain powder F. Powder F is calcined at high temperature to obtain the SnS / WS2@C composite electrode material. Performance testing of the prepared SnS / WS2@C composite electrode material revealed that it exhibits good electrochemical performance when used as a negative electrode in potassium-ion batteries.

This invention belongs to the field of hollow multi-component nanomaterial preparation technology, specifically disclosing a hollow Cu3NbSe4 nanomaterial, its preparation method, and its application. The microstructure of the nanomaterial is a nanoscale hollow cubic structure. The preparation method includes: (1) dissolving niobium source and selenium source separately in oleylamine solvent by heating for later use; (2) treating the soluble copper source and the niobium source dissolved in (1) in a high-boiling-point organic solvent for deoxygenation and dehydration, and then carrying out a solvothermal reaction; (3) when (2) is heated to a certain temperature, injecting the selenium source dissolved in (1) to carry out a solvothermal reaction, and separating the obtained solid product after the reaction is completed. The synthesis process of this invention is simple, the reaction conditions are mild, and the energy consumption and cost are low; more importantly, it realizes the preparation of hollow Cu3NbSe4 nanomaterial with uniform morphology and size, high crystallinity, and stronger light absorption capacity, and the prepared hollow Cu3NbSe4 shows excellent performance in photocatalytic hydrogen production.

The application discloses a preparation method and application of a rare earth cluster scintillator, and the scintillator material is prepared from 4,7-diphenyl-1,10-phenanthroline, 4-tert-butyl benzoic acid, titanium tetraisopropoxide and europium(III) acetate by a solvothermal reaction. The rare earth cluster scintillator material Eu2Ti4 prepared in the application has excellent flexibility and can be used for flexible imaging of non-planar materials. The minimum detection limit of the obtained scintillator is 32.89 nGy s ‑1 , which is 167 times lower than a standard medical diagnostic dose. The rare earth cluster scintillator process is simple, has high yield and fast crystal growth. The limit resolution of the Eu2Ti4-PDMS scintillation screen in the application exceeds 31 LP mm ‑1 at different temperatures, and the scintillation screen has excellent high-resolution X-ray radiation imaging capability and can be used as an ideal visualization tool for high-performance radiation imaging in extreme environments.

The application discloses a kind of recycling methods of waste ternary positive electrode material, belong to lithium battery recycling technical field.The recycling method of waste ternary positive electrode material of the application, comprising the following steps: raw material pretreatment, solvothermal reaction, extraction separation, purification nickel-cobalt alloy, lithium recovery.The recycling method of the application, by the pretreatment under specific pH system, solvothermal reaction and purification process, can the nickel-cobalt element in ternary material be directly converted into nickel-cobalt alloy single element, greatly reduce process flow, reduce material input and energy consumption, realize the efficient recovery of nickel-cobalt alloy and lithium carbonate.In addition, the mild alkaline medium can also avoid the serious corrosion problem caused by strong acid system to equipment, effectively reduce the initial investment and subsequent maintenance cost of equipment, so that the method becomes green recycling method with environmental friendliness and economic competitiveness.

The application discloses a kind of synergistic antitumor porphyrin-based covalent organic framework heterojunction materials and preparation method thereof, belong to biological medicine technical field. 5,10,15,20-tetra (4-aminobenzene) -21H,23H-porphyrin and 2,5-divinyl benzene formaldehyde are added to organic solvent to carry out solvothermal reaction, and porphyrin-based covalent organic framework (pCOF) is obtained;pCOF is mixed with 1,2-ethanedithiol and heated to obtain thiolated modified pCOF;Thiolated modified pCOF is stirred with glutathione aqueous solution ultrasonically, then tetra-chloroauric acid is added to carry out reaction, and synergistic antitumor porphyrin-based covalent organic framework confined gold nanocluster heterojunction material, recorded as Au@pCOF, is obtained.The Au@pCOF prepared in the application can be used as a kind of biocompatible antitumor therapeutic agent, under the irradiation of 808 nm near-infrared light, active oxygen is efficiently generated and heat is released, photothermal and photodynamic synergistic enhancement is realized, tumor cells are significantly killed, and is used for space-time integration synergistic antitumor therapy.

The application discloses a preparation method of hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material and application of the material in selective detection of triethylamine, and belongs to the technical field of gas sensors. The preparation method of the hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material comprises the following steps: ZnSn(OH)6 / SnO2.nH2O microsphere precursors are prepared by using a coprecipitation method; the ZnSn(OH)6 / SnO2.nH2O microsphere precursors are added into an organic solvent to perform a solvothermal reaction, and then are calcined to obtain the hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material. The hollow double-shell ZnSnO3 / SnO2 heterojunction sensor material can be used for high-response detection of triethylamine at a low working temperature, has excellent selectivity and stability, and can be used for actual monitoring application of food freshness.

The application discloses a kind of composite flame retardant, epoxy resin composite material and preparation method thereof, the amino functionalized MOF nanoparticles of the present application is synthesized by DMF aqueous solution system one-step solvothermal reaction, then it is prepared MOF@APP flame retardant by the way of in-situ composite mediated by silane coupling agent, ultrasonic auxiliary, overall process is simple, condition is mild, controllability is strong, can stably synthesize the MOF nanoparticles of amino functional group abundance, particle size is uniform, and realize the stable composite of MOF and ammonium polyphosphate, avoid the phase separation, uneven dispersion problem brought by simple physical mixing, finally the flame retardant obtained has the carbon catalysis of MOF, smoke adsorption function and APP's intumescent flame retardant function, and the two form significant flame-retardant synergistic effect, fundamentally solve the problem that traditional APP flame retardant adds large amount, and the compatibility of epoxy resin is poor, easily leading to the serious loss of matrix mechanical property.

The application provides a metal-carbon skeleton nano-microparticle and a preparation method thereof, and belongs to the field of nanometer material preparation, wherein the metal-carbon skeleton nano-microparticle is prepared from raw materials through a solvothermal reaction; the raw materials comprise, in percentage by mass, 3-15% of polymerizable monomers, 0.05-1.5% of initiators, 0.01-1.5% of metal salts and the balance of solvents; the active functional groups of the polymerizable monomers comprise nitrogen and / or oxygen; and the metal salts comprise at least one of aluminum salts, zirconium salts, chromium salts and zinc salts. The application uses metal ions and organic precursors containing active groups as raw materials, realizes controllable adjustment of the particle size of the nano-microparticles in the range of 1-5000 nanometers through metal crosslinking, induced nucleation and in-situ carbonization processes. The preparation process of the application is simple and controllable, the obtained nano-microparticles are uniform in size, stable in structure, high in temperature resistance and salt resistance, and can be widely applied in the fields of catalysis, sensing or oil displacement.

This invention relates to the field of biomedical technology, and in particular to a method for preparing and applying a nanomedicine for treating deep endometriosis. The method involves mixing ferrous ammonium sulfate, trisodium citrate, and polyethyleneimine, then adding thioacetamide and triethanolamine via a solvothermal reaction to obtain two-dimensional iron sulfide nanosheets. Dopamine hydrochloride is then added and stirred at room temperature in anhydrous ethanol to obtain polydopamine-coated iron sulfide (FP). FP is then mixed with larotrectinib and anhydrous ethanol to obtain the nanomedicine FPL for treating deep endometriosis. The synthesis method of this invention is simple and highly operable; the product is stable and reproducible; FPL exhibits good biocompatibility and biodegradability. After entering the microenvironment of deep endometriosis lesions, it can responsively release larotrectinib, effectively inhibiting the Trk signaling pathway and significantly reducing the degree of nerve infiltration; simultaneously, the anti-inflammatory effect of the FP carrier alleviates the local inflammatory response, jointly inhibiting lesion progression.

This invention discloses a colorimetric fluorescence dual-modal sensor array for detecting meat freshness, its preparation method, and its application, belonging to the field of non-destructive testing technology for food. The preparation of the colorimetric fluorescence dual-modal sensor array for detecting meat freshness includes: adding zirconium chloride to an organic solvent and an acid, and then adding 2-hydroxyterephthalic acid, Tb(NO3)3·6H2O or Eu(NO3)3·6H2O and the organic solvent to carry out a solvothermal reaction. After the reaction, the product is collected by centrifugation to obtain two lanthanide-doped materials; two lanthanide MOF suspensions are prepared separately, and anthocyanins are added; the substrate is cut and immersed in the two mixed sensing liquids, and then subjected to ultrasonic treatment and drying to obtain the colorimetric-fluorescence dual-modal sensor array. This sensor array achieves high sensitivity, dual-modal cross-validation, real-time monitoring, and possesses excellent stability and environmental adaptability, covering the entire process from freshness to spoilage.

This invention relates to an in-situ formation of a π-π interacting D-A structure binuclear cerium metal-organic framework (MOF) material, its preparation method, and its applications. In this MOF, the binuclear cerium center is simultaneously coordinated with both electron-donating and electron-withdrawing ligands, forming a π-π interacting D-A structure. This significantly improves the separation efficiency of photogenerated charges and suppresses electron-hole recombination, thereby enhancing the photocatalytic efficiency of the MOF material. During the hydrothermal preparation of the MOF, some of the electron-donating organic ligands are oxidized to form electron-withdrawing organic ligands, resulting in the in-situ formation of the π-π interacting D-A structure. This eliminates the need for additional preparation of different ligands. Furthermore, the MOF is prepared via a solvothermal reaction, a mature reaction process, and a simple preparation method, facilitating large-scale production. The π-π interacting D-A structure binuclear cerium MOF material achieves a photocatalytic hydrogen peroxide production rate more than twice that of the standard MOF.

The application belongs to the technical field of photocatalysts, and particularly relates to a Z-type heterojunction photocatalyst and a preparation method and application thereof. The preparation method provided by the application comprises the following steps: mixing Na2MoO4.2H2O, Bi(NO3)3.5H2O, Bi(NO3)3.5H2O, BSB-Vs and water to perform a second hydrothermal reaction to obtain BSB-Vs@BMO. 19 S 27 Br3 and water to perform a first hydrothermal reaction to obtain the BSB@BMO, or mixing thiourea, 1-hexadecyl-3-methyl imidazole bromide, Bi(NO3)3.5H2O, polyvinylpyrrolidone and ethylene glycol to perform a solvothermal reaction to obtain BSB-Vs; mixing Na2MoO4.2H2O, Bi(NO3)3.5H2O, BSB-Vs and water to perform a second hydrothermal reaction to obtain BSB-Vs@BMO. The Z-type heterojunction semiconductor material provided by the application has a low photogenerated carrier recombination rate and excellent photocatalytic performance.

The application discloses an Ag / Cu2O / g-C3N4 heterojunction photocatalyst and a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The Ag / Cu2O / g-C3N4 heterojunction photocatalyst is prepared according to the mass percentage, and the Cu2O accounts for 10%-30%. The g-C3N4 precursor prepared through a solvothermal reaction is sintered into nanotubes in a tube furnace, then Ag is generated in situ through heating and stirring, and finally the Ag / Cu2O / g-C3N4 heterojunction photocatalyst is synthesized through heating and stirring, and can be applied to the field of photocatalytic reduction of CO2. Compared with existing photocatalysts, the Ag / Cu2O / g-C3N4 heterojunction has good yield and stability, wherein the strong built-in electric field at the heterojunction interface can not only accelerate the separation and transfer of carriers, but also enhance the adsorption and activation of CO2, so that the activity of photocatalytic reduction of CO2 is enhanced.

The application discloses a homogeneous phase synthesis method of copper-based micro-nano materials with controllable phase and morphology, which comprises the following steps: (1) dissolving soluble copper salt in a mixed solvent of ethylene glycol and ethylenediamine, and stirring to obtain a clear homogeneous phase solution; (2) adjusting the adding amount of deionized water in the reaction system to determine the phase of the product as copper or cuprous oxide or a composite material of both; (3) under the determined phase system, adjusting the adding amount of ethylene glycol in the reaction system to control the micro-morphology and exposed crystal face of the product; and (4) performing low-temperature solvothermal reaction under sealed conditions, and obtaining the target product through centrifugation, washing and drying after the reaction is completed. The method has the advantages of simple process, no need of solid precursors and high-temperature calcination in the whole process, mild reaction condition, high product purity, good repeatability and the like, and effectively solves the problem that the prior art is difficult to simultaneously and accurately control the crystal structure and micro-morphology of copper-based materials in the same system.

The application relates to the field of secondary batteries, in particular to a kind of antimony negative material and its preparation method, lithium ion battery and terminal, organic ligand containing carboxyl and mercapto, antimony source and polyethylene glycol are mixed to obtain solution A; Sodium borohydride and selenium source are added into ethanol, and then polyethyleneimine is added to obtain solution B; Solution A and solution B are mixed to carry out solvothermal reaction; The solvothermal reaction product is collected, washed and dried, and the lithium ion battery assembled by the antimony-based negative material of the application shows excellent electrochemical performance and can be used in various terminals.

The present application relates to a kind of chiral imide group covalent organic framework material and its preparation method, belong to covalent organic framework material technical field.The chiral imide group covalent organic framework material of the present application is with imide bond as connecting unit, with higher thermal stability and chemical stability, and the precise construction of framework chirality is realized by chiral induction strategy, to give material clear chiral characteristics, with important application potential in chiral recognition, chiral separation and asymmetric catalysis etc.;Its preparation is with R / S-tetrahydrofuran-2-methyl acid as chiral inducer, isoquinoline as catalyst, imidazole as reaction medium, and imide bond connecting type covalent organic framework material with crystallinity and significant chiral signal can be prepared by solvothermal reaction.

The application provides a preparation method of one-dimensional Nb2O5 nanorod material and belongs to the technical field of nanometer materials. The method comprises the following steps: uniformly dispersing a niobium source in anhydrous ethanol to obtain a turbid solution; uniformly dispersing oleic acid in the turbid solution to obtain reaction liquid 1; performing a solvothermal reaction on the reaction liquid 1, collecting a solid product; and calcining the solid product to obtain the one-dimensional Nb2O5 nanorod material. The one-dimensional Nb2O5 nanorod material is precisely synthesized for the first time under the synergistic regulation of an anhydrous ethanol and an oleic acid double-solvent system, and the one-dimensional Nb2O5 nanorod material has excellent cycle stability as a lithium ion battery negative electrode material.

This invention relates to the field of electrocatalyst technology, and in particular to a chiral CoFe-based oxygen evolution electrocatalyst, its preparation method, and its application. Iron salts, cobalt salts, and chiral tartaric acid are dissolved together in N,N-dimethylformamide solvent to form a homogeneous mixed solution. Hydrazine hydrate is added to the mixed solution and thoroughly mixed. The solution is then transferred to a high-pressure reactor and subjected to a solvothermal reaction at a set temperature to obtain a nanocatalyst precursor. The nanocatalyst precursor is then subjected to centrifugation, washing, drying, and vacuum calcination to obtain the product. This method successfully prepares a chiral CoFe-based nanocatalyst through the inductive effect of chiral tartaric acid, combined with a specific solvothermal reaction and subsequent heat treatment process. This chiral CoFe-based electrocatalyst exhibits significantly enhanced catalytic activity and stability in the oxygen evolution electrocatalytic reaction, demonstrating superior electrochemical performance compared to achiral catalysts.

The application belongs to the technical field of electrocatalytic materials, and particularly relates to a hollow carbon sphere loaded with metal phosphide, a preparation method and application in the field of electrocatalytic hydrogen production. The preparation method of the hollow carbon sphere loaded with metal phosphide is as follows: (1) metal salt, trimesic acid and a surfactant are added into an organic solvent for dissolution, and a solvothermal reaction is performed to obtain a precursor; (2) the precursor and a phosphorus source are simultaneously placed in a protective atmosphere for heating and phosphorization treatment, and a hollow carbon sphere loaded with metal phosphide is obtained. The preparation method has the advantages of simple preparation process, strong repeatability and low cost. The obtained hollow carbon sphere loaded with metal phosphide has high application value in the field of electrocatalytic hydrogen production.