49 results about "Soft chemistry" patented technology

The invention discloses a hollow glass microsphere. The hollow glass microsphere is prepared by a soft-chemistry method; a thin wall of the hollow glass microsphere contains the ingredients in content (by weight): 55-88% of silicon dioxide, 3-30% of boron oxide, 2-32% of sodium oxide, 0-15% of calcium oxide, 0-5% of aluminum oxide, 0-5% of magnesium oxide, 0-5% of potassium oxide and 0-2% of lithium oxide, and has the density of 0.1-0.7g / cm<3>. The hollow glass microsphere is high in compressive strength, good in fluidity and dispersity and thin and uniform in wall and is lightweight, low in alkali content and waterproof.

A preparation method of lithium iron phosphate with high tap density relates to the technical field of positive electrode active substance preparation of Li-ion battery. The method comprises the following two steps: firstly, synthesizing submicron-scale lithium iron phosphate powder by soft chemical method; and secondly, spraying a polymer solution into the lithium iron phosphate powder while stirring at high speed to granulate, and sintering. The positive electrode active substance lithium iron phosphate of the Li-ion battery prepared by the two-step method has high tap density of 1.5 g / cm, low specific surface area smaller than 10 m / g, and average particle size of 5 to 15 mum. The method has the advantages of simple implementation, low cost and excellent material processability, and suits industrial production.

The invention discloses a method for synthesizing a novel visible light active Ca-Bi-O light catalyst by adopting the soft chemistry-hydrothermal technology, which has the characteristics that the preparation temperature is low, the application process is simple, and the obtained light catalyst has big specific surface area and high visible light activity and contains Ca-Bi-O compound taking the monoclinic CaBi2O4 as the main body. Transparent solution with a certain concentration is prepared respectively by Ca(NO3)2 and Bi(NO3)3, the Ca(NO3)2 solution and the Bi(NO3)3 solution are mixed uniformly, and dilute ammonia water and the mixed solution are simultaneously dipped into de-ionized water for mixing and keeping a certain pH value, so as to obtain white suspension. The generated suspension is centrifugally separated and diluted into while precipitate suspension, and the while precipitate suspension is placed into a closed kettle made of stainless steel material and lined with white polytetrafluoroethylene for heat treatment, wherein the temperature is 160-240 DEG C, the processing time is 2-10h, and then, after the processing, the Ca-Bi-O light catalyst can be obtained by cooling and drying.

The invention relates to a method for producing Pt / ZnO composite hollow microsphere by a low temperature soft chemistry method. According to the invention, glycol and polyethylene glycol are taken as reaction solvents, zinc acetate(Zn(CH3COO)2.2H2O) and chloroplatinic acid(H2PtCl6.6H2O) are taken as raw materials, platinum is reduced under alcohol heating condition, ZnO nanoparticles are made to the ZnO hollow microsphere, and Pt / ZnO composite hollow microsphere with particle size of 10-40 mum is synthesized by one step. According to the invention, the shape of the ZnO can be conveniently controlled, the method has the advantages of simple preparation technology, mild condition, easy industrialization realization and no pollution on environment. The specific effect of Pt and ZnO can effectively reduce the recombination probability of photoinduced electrons and a cavity pair, and photo-corrosion resistant capability of ZnO can be enhanced simultaneously. The catalysis material can perform photocatalysis and degradation on an organic dye with high efficiency under ultraviolet irradiation, and has good industrial utilization prospect.

The invention discloses a preparation method of a three-dimensional porous zinc oxide microstructure, solving the technical problem of high reaction temperature in the process of preparing the three-dimensional porous zinc oxide microstructure by using the existing preparation method. The technical scheme is as follows: respectively preparing zinc acetate solution and urea solution by using high-pure water as a solvent; slowly stirring the zinc acetate solution and dropping in the urea solution, stirring and refluxing the mixture to obtain white precipitate; filtering and washing the white precipitate with deionized water and absolute ethyl alcohol, putting the white precipitate in a vacuum oven for drying; and annealing the dried white precipitate at the air atmosphere to obtain the three-dimensional porous zinc oxide microstructure. Because the three-dimensional porous zinc oxide microstructure is prepared by using a method of combing low temperature soft chemistry and subsequent thermal treatment, the preparation temperature of a precursor is reduced. Compared with the prior art, the preparation temperature is reduced from more than 120 DEG C to 70-90 DEG C.

The invention discloses a manganese dioxide-silver oxide composite oxide nanowire and a preparation method thereof adopting single-walled carbon nanotubes as templates. The preparation method of the manganese dioxide-silver oxide composite oxide nanowire comprises the following steps of: dispersing the single-walled carbon nanotubes into N-methylpyrrolidone; then carrying out ultrasonic processing; centrifugalizing an obtained mixture, discarding bottom residual solids, and extracting supernatant mixed liquor; dissolving AgNO3 into water to form an aqueous AgNO3 solution; adding the AgNO3 solution to the mixed liquor obtained from the step two, and stirring for reaction; dissolving KMnO4 into the water to form an aqueous KMnO4 solution; adding the aqueous KMnO4 solution to the mixed liquor obtained from the step four, and stirring for reaction; and centrifugalizing, washing, drying and grinding so as to obtain a manganese dioxide-silver oxide composite oxide nanowire material. The soft chemistry method is easy to operate and can be used for preparing the manganese dioxide-silver oxide composite oxide nanowire material which has excellent electrochemical property under a moderate condition.

A soft chemical method for in-situ preparing powder with ferroelectric and ferromagnetic composite materials is carried out by adding ferrite metal nitrate and ferroelectric metal nitrate into citric acid solution, heating, stirring, adding into ferroelectric metal alkoxide, adjusting pH value, obtaining homogeneous and stable sol, preparing powder, drying the obtained precursor, baking, burning and heat treating the burnt powder to obtain the final powder. It is cheap and simple, and has better chemical evenness, high purity and fine particles.

The invention relates to a preparation method of MnO2 nanoclusters by using graphene as a template. The method comprises the following steps: 1) dispersing natural graphite in N-methylpyrrolidone, and performing ultrasonic treatment; 2) centrifuging the mixture obtained in the step 1), discarding solid residues at the bottom, and taking the upper mixed liquor; 3) dissolving KMnO4 in water to forma KMnO4 solution; 4) adding the KMnO4 solution obtained in the step 3) in the mixed liquor obtained in the step 2), and stirring to react for a certain time and obtain new mixed liquor; and 5) centrifuging the new mixed liquor obtained in the step 4), washing, drying, and grinding to obtain the desired MnO2 nanoclusters. The preparation method is a soft chemical method which is simple in operation; and the MnO2 nanometer material with excellent electrochemical properties can be prepared under mild conditions.

The invention discloses a method for synthesizing a rutile TiO2 nanowire array by soft chemistry and hydrothermal technology. The method has the characteristics of low preparation temperature, simple application technology, large specific surface area and high photo catalytic activity of the obtained photocatalyst, and the rutile serving as a main body. Hydrochloric acid, toluene, titanium tetrachloride, and tetrabutyl titanate are weighed according to a certain ratio, the toluene is used as a solvent, and solution of titanium tetrachloride and solution of tetrabutyl titanate are prepared respectively. The method for preparing the TiO2 nanowire array comprises the following steps of: (1) cleaning a glass slide which is cleaned by solution of ethanol into an ultrasonic cleaner for several minutes, and cleaning the glass slide by using deionized water; (2) weighing a certain amount of tetrabutyl titanate and titanium tetrachloride according to the stoichiometric ratio respectively, and dissolving the tetrabutyl titanate and titanium tetrachloride in a certain amount of solution of toluene respectively; (3) putting the cleaned glass slide into a sealed reaction kettle which is made of stainless steel and has a white polytetrafluoroethylene lining, and adding a certain amount of hydrochloric acid; (4) guiding the flow by using a glass rod, slowly adding a certain amount of solution of toluene, tetrabutyl titanate, and titanium tetrachloride; (5) putting the reaction kettle into a drying oven for heat treatment, wherein the reaction temperature is between 130 and 180 DEG C, and the reaction time is 6 to 22 hours; and (6) naturally cooling the reaction kettle at room temperature, and taking the glass slide out, and drying so as to obtain the TiO2 nanowire array.

The invention discloses a preparation method of a modified zirconia toughened alumina (ZTA) complex-phase ceramic having good wettability with steel melts, and belongs to the technical fields of ceramic-based composite materials and metal-based composite materials. The preparation method comprises the following steps: firstly, preparing yttria-stabilized zirconia (YSZ) powder by using a soft chemistry method, adding an rare-earth oxide in the process of preparing the YSZ powder, carrying out drying and calcinating, then uniformly carrying out mixing with Al2O3 and TiO2 powder, carrying out pre-pressing and pressing on the mixed powder, and carrying out high-temperature sintering to obtain a modified ZTA complex-phase ceramic block having good wettability with steel melts. The modified ZTAcomplex-phase ceramic prepared by the invention is low in cost, simple in process and high in production efficiency, has good wettability with steel melts under the condition of not changing the original toughness of ZTA particles, and can be directly used to prepare ceramic particle reinforced steel-based composite materials.

The invention discloses a soft chemical method for making an ultrathin HfO2 or ZrO2 gate dielectric membrane. The method successfully prepares HfCl4 or ZrCl4 precursor sol with better stability and evenness through a simple and feasible technological line; moreover, the sol has longer storage life; an ultrathin HfO2 or ZrO2 membrane with a leveling-off surface is made on a Si substrate through adopting the precursor sol and the soft chemical method under room temperature; and a gate dielectric membrane with excellent electrical properties is obtained through post annealing. The method has simple making process and low cost and has superiority in the micro-electronic field, thereby having important application prospects.

The invention adopts a soft chemical method, takes citric acid as a carrier, adjusts the components used for preparing the soft magnetic ferrite and controls sintering program and sintering temperature so as to prepare a high-end ferrite product that meets the requirement of the market. The method solves the defect that in the prior art, the ferrite is not easy to be sintered under a relatively low temperature, and realizes the sintering of the ferrite magnetic medium under the low temperature, thus facilitating the cofiring with an electrode. The preparation method for synthesizing the soft magnetic ferrite by the soft chemical method comprises the following steps of: (1) dispersing; (2) mixing; (3) evaporating and solidifying; and (4) sintering. The soft chemical method takes the citricacid as the carrier to synthesize the soft magnetic ferrite and has the advantages of low sintering temperature, easy regulation of components, controllable performance of product, and capability of realizing the cofiring with the electrode at the relatively low temperature.

The invention discloses a novel method for preparing micro-nano multivalent silver oxides by soft chemistry synthesis. The micro-nano multivalent silver oxides are chemical substances which have excellent killing effect on microorganisms and tumor cells. The method for preparing micro-nano disinfectants comprises the following steps of: uniformly mixing an oxidant potassium persulfate or sodium persulfate, sodium hydroxide and silver nitrate according to a ratio of 2.4-9:4.8-6:5-20, putting into a reactor, adding a proper amount of distilled water, adjusting into a rheologic state, reacting at the temperature of between 80 and 100 DEG C for 10 to 30 minutes, filtering, and washing with purified water for four times to obtain micro-nano multivalent silver particles. The product synthesized by the method has the advantages of uniform size, simple production process, high efficiency, remarkable killing effect on various microorganisms, and safety to the environment and human.

The invention relates to a method for preparing lithium iron phosphate in ion liquid. The method is implemented by taking the ion liquid as a reaction medium with a soft-chemistry synthesis method. In the method, the ion liquid is taken as the reaction medium at lower temperature, so that the method has the advantages of the conventional soft-chemistry synthesis method, and an obtained product has the characteristics of high crystallization degree, uniform particle size, large specific surface area and the like. Moreover, the vapor pressure of the ion liquid is very low, so that the requirement on a reaction for equipment is greatly lowered. Meanwhile, the consumption of additional LiOH in a reaction process is not needed, so that the production cost is lowered.

The invention relates to a method for preparing NbVO5 powder with the coprecipitation method, belonging to the preparation field of phosphoric acid tungsten bronze (ABO5) ceramic material. The synthesis of the pure NbVO5 is very difficult, and a sol-gel method is only available internationally in the present, by which the pure NbVO5 is synthesized by using metal alkoxide and chloride as raw materials. By adopting the coprecipitation method, the high-purity phosphoric acid tungsten bronze (ABO5) material NbVO5 powder is synthesized through experimental process of raw material dissolution, coprecipitation and calcinations under the mild synthesis conditions by using analytically pure Nb2O5, NH3VO4, H2SO4, C2H2O4.2H2O and NH3.H2O as the raw materials. The method adopts the easily-obtained and cheap raw materials, does not need vacuum or protective atmosphere, utilizes the soft chemistry method, the synthesis condition is mild, the process is simple, the cost is low, the experimental period is short, and the operation and industrialization are easy.

The invention relates to a design method of a three-wave band photosensitive inorganic / quantum dot / organic composite material solar cell, which belongs to the technical field of semiconductor materials. At present, the maximum obstacle of solar energy utilization to humans is the problems of high cost and low conversion efficiency of the solar cell. The invention provides a silicon quantum dot sensitization organic / inorganic compound material and a device of the solar cell. The design method mainly comprises the following steps of: preparing a branchy zinc oxide nanometer array by a soft chemistry method, and performing self assembly on functionalized silicon quantum dots of a functional group in the zinc oxide nanometer array; and filling an organic conductive polymer (P3HT) in a nanometer structure modified by the quantum dots to form an organic / inorganic composite nanometer network structure. In the design of the composite material, the exertion of a selectron effect of the quantum dots is fully considered, silicon is used as a cross-linking agent between an organic material and an inorganic material to make the zinc oxide more firmly contacted with an organic layer, and the accelerated transfer of electric charges is facilitated. In addition, three materials serving as light absorption media in the composite structure can absorb sunshine in a layered way, and the photoelectric conversion efficiency of the composite material-based solar cell is improved. The ultraviolet / near-infrared / visible three-wave band photosensitive inorganic / quantum dot / organic composite material solar cell is realized finally.

The invention discloses a three-dimensional structure attapulgite / graphene / polyaniline composite anti-corrosion filler, which comprises a one-dimensional structure attapulgite / polyaniline composite material and a two-dimensional structure attapulgite / polyaniline composite material. Polybasic acid is added into a system, so that the effect of a doping agent is achieved, and the effect of a cross-linking agent is also achieved. Aniline monomers adsorbed at the attapulgite surface and the graphite oxide layer take an in-situ oxidation polymerization reaction, and meanwhile, a graphite oxide sheet layer is supported open through a soft chemistry effect; then, polyaniline gel is generated through the effect of the cross-linking agent; meanwhile, one-dimensional attapulgite and two-dimensional graphene are connected, so that three-dimensional cross-linking structure attapulgite / graphene / polyaniline composite gel is formed; after freezing and drying, the three-dimensional cross-linking structure of the composite material can be still maintained; after the composite gel is added into paint, the anti-corrosion performance of a coating can be greatly improved.

The invention discloses a preparation method and application of a ZIF8 graphene-based rhodium-loaded aerogel catalyst. The method comprises the following steps: diluting a graphene oxide solution in methanol to prepare a graphene oxide dispersion liquid, doping a ZIF8 source solution into a bottom template to grow ZIF8 in situ, and preparing a ZIF8 / GO solution through a normal temperature synthesis method. The ZIF8 / graphene rhodium-loaded aerogel is obtained by a soft chemical method. According to the preparation method, the ZIF8 is doped to introduce holes, so that the inherent micropore property of graphene is well improved, and a composite material has more active sites by taking a composite product of the graphene and the ZIF8 as a bottom template. The prepared ZIF8 / graphene-based rhodium-loaded aerogel has good electrocatalytic performance and stability, effectively utilizes the porous characteristic of the ZIF8 material, has the advantages of environmental friendliness, high resource utilization rate, good feasibility and the like, and is expected to be applied to the field of methanol fuel cells.

The invention discloses a soft chemical synthesis method for preparing a sodium ion solid electrolyte, which comprises the following steps of: 1, uniformly mixing a lithium ion solid electrolyte and asolid-phase sodium ion exchanger to obtain mixed powder; 2, carrying out heat treatment on the mixed powder to synthesize a sodium ion solid electrolyte; wherein the lithium ion solid electrolyte andthe sodium ion exchanger are kept in a solid-phase state in the heat treatment process; 3, dissolving the redundant sodium ion exchanger and the synthesized by-product by adopting a solvent, and centrifuging to obtain a solid product containing the sodium ion solid electrolyte; and 4, drying the obtained solid product, uniformly mixing the dried solid product with a sodium ion exchanger, and repeating the step 2-3 several times to improve the content of the sodium ion solid electrolyte in the solid product. The sodium ion solid electrolyte is synthesized through solid-phase exchange between the lithium ion solid electrolyte and the sodium ion exchanger under the low-temperature heat treatment condition, the method is simple and convenient, the cost is low, and industrial application is easy.

The invention discloses a cathode catalyst of proton film fuel battery in the electrochemical technique domain, which is characterized by the following: each composition and weight percentage is 1-50 percent Pt, 20-80 percent Zr1-xMxO2 and 10-50 C, wherein the x is mole rate between 0.1 and 0.5; the catalyst making method comprises the following steps: adapts soft chemical method to synthesize nanometer-level Zr1-xMxO2; mixing the nanometer-level Zr1-xMxO2 with nanometer-level Pt / C at mole rate of Pt:M=1:1-5. The invention reduces the electrochemical polarization, Ohm polarization and mass tr ansfer polarization effectively, which increases the catalytic efficiency to improve the battery property.

The invention relates to a preparation method of a graphene-supported nano MnOOH composite material, which comprises the following steps: I, mixing and preparing MnCl2.4H2O, graphite oxide and isopropanol into a solution which is uniformly diffused under ultrasound; II, adding KMnO4 and water into the solution prepared in the step I, and stirring uniformly; III, performing a constant-temperature reaction on the mixed solution in the step II in a sealed condition for a certain period of time to obtain black precipitates; IV, centrifuging and washing the black precipitates obtained by the reaction, adding the product into glycol and stirring uniformly; V, performing a constant-temperature reaction on the mixed solution in the step IV in a sealed condition; and VI, centrifuging, washing, drying and grinding the product obtained by the reaction in the step V to obtain the graphene-supported nano MnOOH composite material. The preparation method provided by the invention is a soft chemical method easy to operate, and can prepare the graphene-supported nano MnOOH composite material with excellent catalytic performance under mild conditions.

The invention relates to the technical field of a printed circuit board manufacturing method, and specifically relates to a method for manufacturing different directions of surface metal circuits on asmall insulator. The method comprises the steps of manufacturing a bracket, wherein the bracket is provided with at least one insulator; plating metal on the bracket to serve as a seed layer; ablating the seed layer along the outer contour of a circuit by laser, and dividing the seed layer into a circuit area and a non-circuit area which are electrically insulated from each other; thickening thecircuit area and the non-circuit area; removing the metal in the non-circuit area and processing the surface of the circuit area so as to obtain an insulator with different directions of surface metalcircuits. According to the invention, the circuit area and the non-circuit area are thickened, and then the metal and the residual metal in the non-circuit area are removed by adopting a combinationof electrolytic deplating and soft-chemistry deplating, so that more precise metal circuits can be formed on the insulator, the bracket of the insulator is connected by using the frame, and productionoperation, follow-up plating and metal deplating are facilitated.

This invention utilizes a high temperature solid-phase method and a soft chemosynthetic method to prepare a series of good-health mine structure materials: [Bax(Ti8-2xM2x)O16(0.5<x<1.6, M=Al, Cr, Co)], in which, the high temperature solid-phase method includes: preparing the materials according to the mol ratio: BaCO3 : TiO2 : M2O3, ball-milling and mixing them uniformly and then calcining them under 1300-1400deg.C to get the necessary material, the soft chemosynthetic method includes: preparing them to a transparent solution according to the mol ration of Ba(NO3)2 : TiCl4 : M(NO3)2-3.yH2O :H2O and adding citric acid and polyglycol in the volume of the mass of the raw material of 3-5wt% and 2-4wt% to be dried under 150-250deg.C then to be calcined to get the material needed, which can be used in solidifying Cs and Sr nucleus scraps.

The invention relates to Dy<3+> doped Na5Y(MoO4)4 warm white fluorescent powder and a preparation method thereof, and belongs to the technical field of luminescent materials. The chemical formula of the fluorescent powder is Na5Y1-x(MoO4)4-y(WO4)y:xDy<3+>, wherein x is greater than or equal to 0.01 and less than or equal to 0.07, and y is greater than or equal to 0.04 and less than or equal to 0.20. Na5Y(MoO4)4 is used as a matrix, Dy<3+> is used as a light-emitting center, yellow light and blue light emitted by Dy<3+> ions are combined into white light, and the light-emitting performance of the fluorescent powder is obviously enhanced after anion structure replacement; a sample is synthesized by adopting a citric acid sol combustion method and a soft chemical method, so that the influence of multiple high-temperature calcinations of a high-temperature solid-phase method on the luminescent property of the fluorescent powder is avoided, and the defects that particles obtained by a coprecipitation method are easy to agglomerate, irregular in morphology and the like are also avoided; and the method has the advantages of simple process, low synthesis temperature, smaller generated particles, high luminescent intensity, and being environment-friendly, economical and efficient.

The invention discloses a three-dimensional structure attapulgite / graphene / polyaniline composite anti-corrosion filler, which comprises a one-dimensional structure attapulgite / polyaniline composite material and a two-dimensional structure attapulgite / polyaniline composite material. Polybasic acid is added into a system, so that the effect of a doping agent is achieved, and the effect of a cross-linking agent is also achieved. Aniline monomers adsorbed at the attapulgite surface and the graphite oxide layer take an in-situ oxidation polymerization reaction, and meanwhile, a graphite oxide sheet layer is supported open through a soft chemistry effect; then, polyaniline gel is generated through the effect of the cross-linking agent; meanwhile, one-dimensional attapulgite and two-dimensional graphene are connected, so that three-dimensional cross-linking structure attapulgite / graphene / polyaniline composite gel is formed; after freezing and drying, the three-dimensional cross-linking structure of the composite material can be still maintained; after the composite gel is added into paint, the anti-corrosion performance of a coating can be greatly improved.