80 results about "SODIUM SULFIDE NONAHYDRATE" patented technology

The invention relates to a preparation method of a lithium ion battery cathode GO-PANI-Ni3S2 composite material. The preparation method comprises the following steps of: carrying out uniform ultrasonic dispersion on graphene oxide; respectively adding lauryl sodium sulfate water solution and aniline to carry out mixing; carrying out ultrasonic treatment to form stable and uniform mixed liquid; carrying out ice-water bath stirring and adding, drop by drop, ammonium persulfate which is acidized by hydrochloric acid; and carrying out ice-water bath stirring for 12 hours to obtain deep green solution; centrifuging and washing the deep green solution to obtain a gelatinous substance; ultrasonically dispersing the gelatinous substance in hydrochloric acid solution; dropwise adding nickel acetate tetrahydrate water solution into the hydrochloric acid solution and carrying out uniform ultrasonic processing; stirring the mixture at room temperature for 1 hour; carrying out hydrothermal treatment at 180 DEG C for 12 hours; adding sodium sulfide nonahydrate water solution; and carrying out centrifugation, washing and freeze-drying to obtain the lithium ion battery cathode material. Compared with the prior art, the composite cathode material has good cycle performance and high-magnification charging-discharging capacity, so that the performance of lithium ion batteries which take the material as a cathode material is improved.

The invention relates to a preparation method and application of a Mn-doped ZnS quantum dot imprinted sensor and belongs to the technical field of environmental functional material preparation. The method comprises the steps of firstly stirring an aqueous solution of zinc sulfate heptahydrate and an aqueous solution of manganese chloride tetrahydrate at room temperature under the condition that nitrogen gas is introduced, and adding an aqueous solution of sodium sulfide nonahydrate, so as to obtain Mn-ZnS quantum dots; carrying out vinyl modification on the obtained Mn-ZnS quantum dots by using 3-(methacryloyloxy) propyl trimethoxysilane, then, synthesizing a Mn-doped ZnS quantum dot imprinted sensor, which takes 2,6-dichlorophenol as template molecules, methacrylic acid as functional monomers, Mn-ZnS-KH570 as auxiliary monomers, ethylene glycol di(methacrylate) as a cross-linking agent, 2,2-azodiisobutyronitrile as an initiator and acetonitrile as a solvent, by using a precipitation polymerization method through two-stage polymerization, and applying the Mn-doped ZnS quantum dot imprinted sensor to the optical detection on 2,6-dichlorophenol. The prepared phosphorescent molecular-imprinted polymer has very good optical and pH stability and has the capability of selectively identifying 2,6-dichlorophenol.

The invention discloses a corncob-based biochar preparation method and system as well as a mercury absorbent. The preparation method comprises the steps as follows: corncobs are washed with water, sheared and crushed, and corncob particles are obtained; the corncob particles are added to an aqueous solution containing stannous chloride and ferric trichloride to be impregnated for 3-4 h and then dried at 80-90 DEG C for 4-5 h, a mixture is obtained and heated to 350-450 DEG C in the presence of nitrogen in a muffle furnace at the speed of 8-10 DEG C/min for 5-6 h, and corncob biochar particlesare obtained; the corncob biochar particles are stirred in an ethylene glycol solution containing ferrous chloride, zinc chloride and selenium powder at 150-160 DEG C for 2-3 h in the presence of chlorine, an alkaline solution is added to adjust the pH value, then vacuum drying is performed at 40-50 DEG C for 6-7 h, corncob biochar is obtained, the corncob biochar, dimethyl formamide, mercaptoacetic acid and anhydrous sodium hydrogen sulfate are placed in a container to be stirred uniformly and then sealed, the mixture reacts at 120 DEG C for 3 h, the product is added to a 95% ethanol solutioncontaining sodium sulfide nonahydrate, and thiolated corncob biochar is obtained.

The invention discloses a preparation method of a three-dimensional hollow selenium nickel sulfide nano-frame catalyst. The nickel-cobalt Prussian blue nano-cube and the sodium sulfide nonahydrate aredispersed in the solvent, and the nickel sulfide nano-frame is obtained through solvothermal reaction; and then the obtained nickel sulfide nano-frame and the selenium powder are dispersed in the solvent, and a certain amount of hydrazine hydrate is added so that the three-dimensional hollow selenium nickel sulfide nano-frame catalyst is prepared through secondary solvothermal reaction. The method is easy to operate and low in cost, and the prepared selenium nickel sulfide nano-frame catalyst has excellent electrochemical performance and the advantages of small nanoparticle size, high specific surface area and stable structure. The selenium nickel sulfide nano-frame catalyst is used as the counter electrode of the dye-sensitized solar cell and the photoelectric conversion efficiency can be 9.66%.

The invention discloses a method for preparing a nickel-cobalt sulfide/graphene composite zinc-air battery bifunctional catalyst, and belongs to the field of preparation and application of new energybatteries. The preparation method comprises the following steps of firstly, the preparation of a precursor NiCo2O4: weighing cobalt nitrate hexahydrate, nickel nitrate hexahydrate and urea in a certain mass ratio, dissolving the same in a mixed solution of distilled water and isopropanol, uniformly stirring the mixture ultrasonically dispersing the mixture, sealing the product in a high-pressure vessel for a reaction, naturally cooling the product and collecting the precipitate, washing, drying and calcining the product at a high temperature, naturally cooling the product to the room temperature and grinding the product into a powder; secondly, the preparation of the catalyst: weighing the precursor NiCo2O4, sodium sulfide nonahydrate and graphene in a certain mass ratio, dissolving the same in distilled water, uniformly stirring the mixture at room temperature, ultrasonically dispersing the mixture, sealing the product in the high-pressure vessel for a reaction, collecting the black precipitate, washing, drying and calcining the product, naturally cooling the product to the room temperature and grinding the product into a powder. The catalyst has high oxygen reduction performanceand high oxygen evolution performance in the air electrode.

The invention relates to a preparing method of nanometer nickel-cobalt-sulphur particles serving as a positive electrode of a lithium sulphur battery. The preparing method comprises the steps of dissolving cobalt nitrate hexahydrate, nickel nitrate hexahydrate and sodium acetate into a solvent, adding potassium peroxodisulfate or ammonium persulfate, stirring, pouring the mixture into a reaction kettle to be reacted, cooling, washing, centrifuging, drying, dissolving the mixture into a solvent, conducting ultrasonic treatment, adding sodium sulfide nonahydrate, putting the mixture into the reaction kettle to be reacted, cooling, washing, centrifuging and drying to obtain the nanometer nickel-cobalt-sulphur particles. The preparing method is simple, feasible, safe, and environmentally friendly, raw materials are easy to obtain, the cost is low, and the preparing method is suitable for large-scale production; the prepared nanometer nickel-cobalt-sulphur particles have small size, the specific area is increased, the nickel-cobalt-sulphur particles have a good effect of fixing polysulfide, and the shuttling effect of the battery is obviously weakened. Besides, compared with oxides andbinary sulfides which are used for sulfur fixation generally, nickel-cobalt-sulphur has good electrical conductivity. On the condition that a certain specific capacity is guaranteed, the circulating stability of the battery is improved, and the preparing method has a huge potential in solving the current problem existing in lithium sulphur batteries.

The invention provides a preparation method of nanometer copper sulfide, which is characterized in that the preparation method comprises the following steps: 1, adding sodium tripolyphosphate, folic acid and sulfur ion compound into deionized water to obtain solution A; 2, dissolving that copper ion compound in deionize water to obtain solution B; step 3: adding solution B to solution A dropwise under stirring conditions, and when the solution becomes a black-brown copper sulfide suspension, and continuously stirring for 20-40 minutes, obtaining nanometer copper sulfide suspension. The invention takes copper chloride dihydrate and sodium sulfide nonahydrate as raw materials to be synthesized in aqueous solution, has high efficiency and convenience, low equipment requirements, and no toxicdrugs and toxic solvents in the reaction process.

The invention discloses a method for green synthesis of oil-soluble zinc sulfide quantum dots based on a liquid paraffin solvent system. According to the method, liquid paraffin replacing an organic solvent and a supergravity reaction strengthening technology, namely a rotating packed bed reactor, are utilized to prepare the zinc sulfide quantum dots. Specifically, a zinc-containing metal salt andsodium sulfide nonahydrate are used as a zinc source and a sulfur source, long-chain carboxylic acid is used as a stabilizer, a precursor solution is introduced into a supergravity reactor for nucleation and growth, and finally, absolute ethyl alcohol is used for centrifugal separation to obtain the oil-soluble zinc sulfide quantum dots with the size of 2-3 nm. The method is simple in synthesis process, low in cost and more environment-friendly. The uniformity of the product is ensured on the basis of greatly shortening the reaction time by utilizing the strengthening process of a supergravity rotating packed bed. Besides, as a continuous reactor, the supergravity rotating packed bed can realize continuous production of products, can ensure good repeatability among different batches of products, and has unique advantages for large-scale synthesis of high-quality nano materials.

The fragrant liquid for quitting smoking is prepared with 42 kinds of Chinese medicinal materials, including white atractylodes rhizome, borneol, menthol, bupleurum root, Chuanxiong rhizome, etc and 8 kinds of chemical matter, including 95 % concentration ethanol solution, sodium sulfide nonahydrate, settled sulfur, distilled water, perfume, etc. It has the features of high effect of quitting smoking, no recurrence and no side effect.

The invention relates to the technical field of water treatment, in particular to a phenol wastewater treatment method, which comprises the following steps: carrying out a stirring reaction on phenol wastewater, sulfurized zero-valent iron and hydrogen peroxide to obtain treated phenol wastewater, wherein the sulfurized zero-valent iron is prepared according to the following steps: A) preparing a buffer solution containing CH3COOH and CH3COONa, and removing oxygen in the buffer solution to obtain a deoxygenized solution; B) under the condition of protection gas, carrying out a stirring reaction on the deoxygenated solution, iron powder and sodium sulfide nonahydrate to obtain a solid-liquid mixture; and C) carrying out solid-liquid separation on the solid-liquid mixture, and drying the obtained solid substance to obtain the sulfurized zero-valent iron. According to the invention, the surface of the sulfurized zero-valent iron is partially sulfurized, released Fe<2+> and zero-valent iron (ZVI) form a homogeneous cocatalyst system, the high electronic state density of FeS forms a heterogeneous system for efficiently enriching and activating H2O2, and the two systems are coupled to realize rapid degradation of COD in the phenol wastewater.

The invention discloses a synthesis method and application of a UV-cured bactericidal anti-static resin material, and belongs to the technical field of photodynamic antibacterial agents, and the synthesis method comprises the following four steps: preparation of tetraamino zinc phthalocyanine, preparation of a photocuring adhesive, coating and photocuring. The tetranitrophthalocyanine zinc is synthesized by adopting an inert solvent method, the sodium sulfide nonahydrate is used for reducing zinc tetranitrophthalocyanine into zinc tetraaminophthalocyanine, unsaturated double bonds are graftedon zinc tetraaminophthalocyanine for UV photocuring, the prepared light-curing film has efficient sterilization performance, can reach the escherichia coli resistance rate of 95% or above after beingformed, and is permanent.

The invention discloses a preparation method of a Cu2S-CoOx/CF efficient oxygen evolution catalyst with a Cu2S-CoOx interface. According to the invention, foamy copper, sodium hydroxide and ammonium persulfate are used as raw materials, Cu(OH)2/CF with nanowire array characteristics is prepared firstly, then Cu(OH)2/CF is converted into a Cu2S/CF precursor through ion exchange by using sodium sulfide nonahydrate as a sulfur source and absolute ethyl alcohol as a solvent, then cobalt nitrate hexahydrate and absolute ethyl alcohol are used for preparing a metal precursor solution, the Cu2S/CF precursor is uniformly coated with a certain amount of metal precursor, finally, annealing is conducted in the argon atmosphere, the Cu2S-CoOx/CF nanowire array oxygen evolution catalyst with the Cu2S-CoOx interface is obtained, the Cu2S-CoOx interface optimizes the electrochemical property of a catalytic material, and the catalyst shows good oxygen evolution activity (eta 25 mA cm<-2> = 255 mV) inan alkaline solution and is far superior to a Cu2S/CF oxygen evolution catalyst without the Cu2S-CoOx interface.

The invention discloses a nickel-cobalt-sulfur hollow sphere used as a lithium-sulfur battery positive electrode, and a preparation method thereof and an application thereof in the preparation of a lithium-sulfur battery. The preparation method comprises the following steps: dissolving cobalt nitrate hexahydrate, nickel nitrate hexahydrate, potassium peroxydisulfate or ammonium peroxodisulfate, ammonium fluoride and sodium acetate in deionized water, performing stirring, adding a nano-silica sphere, and performing ultrasonic dispersion; heating and reacting the obtained suspension, washing theobtained reaction product, and drying the washed reaction product; and adding obtained precursor powder to deionized water, performing ultrasonic dispersion, adding sodium sulfide nonahydrate to theobtained dispersion, heating and reacting the obtained mixed solution, washing the obtained reaction product, and drying the washed reaction product to obtain black nickel-cobalt-sulfur nano-hollow sphere powder. A nickel-cobalt-sulfur nano-particle prepared by using the nickel-cobalt-sulfur hollow nano-sphere prepared through a simple hydrothermal technology in a one-step manner as a sulfur fixing material has a good prospect as a lithium-sulfur battery positive electrode supporting material, and improves the cycle performances of the lithium-sulfur battery. The preparation method has the advantages of simplicity, easiness in operation, safety, environmental protection, low cost, and suitableness for large-scale production.

The invention provides a hydrangea-like zinc oxide@copper sulfide and a preparation method thereof. The preparation method comprises the following steps that step 1, a zinc source and sodium citrate are dissolved in water at room temperature, the mixture is stirred to form a colorless transparent solution; and then a sodium hydroxide aqueous solution is added to adjust to a pH value to be 11-13, auniform milky white solution is formed, and the mixture is stirred for reaction at room temperature, and the product is centrifuged and dried to obtain the hydrangea-like zinc oxide; and step 2, thehydrangea-like zinc oxide prepared in the step 1 is dispersed in isopropyl alcohol, a stable suspension is formed, then, an aqueous solution of sodium sulfide nonahydrate is added to the suspension, the mixture is stirred for reaction at room temperature to obtain a system A, finally an isopropanol solution of copper chloride dihydrate is added to the system A, the mixture is stirred for reactionat room temperature, and the mixture is centrifuged and dried to obtain the hydrangea-like zinc oxide@copper sulfide. The operation is simple and the reaction conditions are mild. The prepared zinc oxide@copper sulfide is a hydrangea-like morphology, and is expected to be applied to visible light catalysis, photothermal diagnosis and superhydrophobic coating.

The invention discloses a hollow spherical bimetallic chalcogenide (Ni0.33Co0.67SSe), a preparation method and a sodium battery negative electrode, and belongs to the technical field of preparation of secondary battery electrode materials. The preparation method comprises the following steps: firstly preparing a nickel cobalt glycerate precursor, then mixing the nickel cobalt glycerate precursor with sodium sulfide nonahydrate, carrying out hydrothermal reaction to synthesize a hollow spherical NiCo2S4 nano material, finally mixing the vulcanized NiCo2S4 nano material with a selenium powder, and carrying out high-temperature calcination to obtain the Ni0.33Co0.67SSe material which is a hollow spherical structure assembled by first-grade nano particles. The structure can well relieve the phenomenon that the active substance structure collapses due to volume expansion in s circulation process, double anions and cations can improve the conductivity of the transition metal chalcogenide, the sodium ion battery negative electrode prepared from the transition metal chalcogenide as the active substance has good circulation stability, and when the current density is 5A g<-1>, the capacity of the battery still reaches 534.7 mA h g<-1> after 2000 cycles; and even under the current density of 20A g<-1>, the excellent rate capacity of 608.1 mA h g<-1> is shown.

The invention provides a synthesis method of a meropenem side chain intermediate mercaptan lactone with the high yield. The synthesis method comprises the steps that (2S,4R)-2-carboxyl-1-(4-nitrobenzyloxycarbonyl)pyrrolidine) is added into dichloromethane, the liquid temperature is kept at minus 26 DEG C to minus 17 DEG C, isopropyl chlorocarbonate is dropwise added, and then triethylamine is dropwise added to activate carboxyl; MsCl is dropwise added under the same temperature condition, and then triethylamine is dropwise added to activate hydroxyl; a sodium sulfide nonahydrate, a phase transfer catalyst and water are dissolved into a solution, and the solution is added into a reaction solution under the same temperature condition; deionized water is added at 0 DEG C for liquid separation, and an organic phase is separated; the organic phase is subjected to a reflux reaction in a water bath kettle; and alkali is used for adjusting till pH is 8 to 9, an oil phase 1 is separated, the oil phase 1 continues to be adjusted through acid till pH is 1 to 2, an oil phase 2 is separated, after the oil phase 2 is subjected to decompression distillation, oily liquid is obtained, a crystallization solvent is added into the oily liquid, then a low-temperature reaction for bath cooling is conducted, and filtering is conducted to obtain the meropenem side chain intermediate mercaptan lactone.

The invention relates to a bifunctional water electrolysis electrode with super wettability as well as a preparation method and application thereof. The bifunctional water electrolysis electrode withsuper wettability is realized by generating a compact nanosheet array structure through reaction of cobalt acetate tetrahydrate and sodium sulfide nonahydrate on the surface of foamed nickel. The electrode prepared by the method disclosed by the invention has super hydrophilicity and super-hydrophobic property; the water electrolysis reaction on the surface of the electrode continuously occurs; therefore, mass transfer of reactants and rapid diffusion of gas in the catalytic hydrogen evolution process are facilitated, finally, the electrode shows excellent bifunctional water electrolysis performance, the catalytic hydrogen evolution efficiency is remarkably improved, the catalytic cost is reduced, and the electrode has great significance in promoting development of the hydrogen evolution technology and further using clean energy.

The invention discloses a method for preparing near-infrared silver sulfide quantum dots by a high-gravity reactor, belonging to the cross technical fields of chemical engineering, materials and photonics. Microscopic mixing and mass transfer process strengthening are achieved by using the high-gravity technology. In the method, silver acetate and sodium sulfide nonahydrate are adopted as reactionprecursors; oleic acid and oleylamine are used as stabilizers; a precursor solution is fed into the high-gravity reactor for nucleation and growth, and finally, centrifugal separation is performed with absolute alcohol to obtain oil-soluble silver sulfide quantum dots the fluorescence-emission peak of which is in the near-infrared range and the dimension of which is 2-10 nm. The method does not need high-temperature high-pressure reaction conditions or protective gas and can be performed at room temperature, and discharging can be achieved in seconds by utilizing a high-gravity rotating packed bed, thus greatly shortening the reaction time, ensuring product uniformity and good repeatability among products of different batches. The production process is simple and the method has unique advantages for large-scale industrial production.

The invention relates to the technical field of chemical synthesis of organic selenium, in particular to a method for synthesizing diselenides. The method comprises the steps that selenium powder and sodium sulfide nonahydrate are utilized for reacting to generate selenium disodium tetrasulphide, and then selenium disodium tetrasulphide and halohydrocarbon react to prepare the diselenides. According to the provided by the invention, raw materials are simple and easy to obtain, cost is low, the path is short, reaction conditions are mild, and the reaction is easy to operate.

The invention relates to a water-soluble silver-indium-sulfur quantum dot photocatalyst and a preparation method thereof, and belongs to the technical field of water-soluble quantum dot photocatalysts. The water-soluble silver-indium-sulfur quantum dot photocatalyst is prepared from cation precursors and an anion precursor in water, wherein the cation precursors are a silver cation precursor and an indium cation precursor, and the anion precursor is sodium sulfide nonahydrate. The water-soluble silver-indium-sulfur quantum dot photocatalyst is powdery microparticles with a size of 2-5 nanometers, has the characteristics of semiconductor quantum dots and emits visible light under ultraviolet irradiation. The photocatalyst can realize photocatalytic degradation of methyl orange under an illumination condition. The preparation method comprises the following operation steps of: mixing a silver cation precursor, an indium cation precursor, a sulfhydryl compound and water, adding sodium hydroxide or potassium hydroxide, then adding sodium sulfide nonahydrate, adjusting the pH value with a weak acid solution, stirring and drying. When 0.85 mg of the photocatalyst is used for photocatalytic degradation of an aqueous solution containing 0.8 mg of methyl orange, the highest degradation efficiency within 1 minute can reach 98.2%.

The invention discloses a nano zero-valent iron modified composite mesoporous material and a preparation method and application thereof. The material is prepared by the following steps: (1) combininga ZSM-5 molecular sieve treated by diluted hydrochloric acid with a graphene oxide solution by a solution blending method, evaporating to dryness, carrying out centrifugal washing for multiple times,and grinding the dried product into powder for later use; and (2) dispersing ferrite and the powdery product obtained in the step (1) in a solvent, adding a mixed solution of a reducing agent and sodium sulfide nonahydrate, and reacting to obtain the nano zero-valent iron modified composite mesoporous material. The preparation process is simple, the preparation cost is low, and the preparation rawmaterials are environment-friendly; the prepared nano zero-valent iron modified composite mesoporous material has good dispersity in an aqueous solution, a large number of oxygen-containing functional groups are reserved in the material, the limitation that nano zero-valent iron is prone to agglomeration and passivation is overcome, and the composite mesoporous material can effectively remove organic pollutants and has wide application prospects in the aspect of water resource treatment.