73results about How to "The synthesis method is simple and fast" patented technology

The invention discloses a one-dimensional rod-shaped sulfur-copper compound as well as a preparation method and an application thereof and relates to a sulfur-copper compound. The one-dimensional rod-shaped sulfur-copper compound is one-dimensional rod-shaped CuxS, wherein x is greater than or equal to 0 and less than or equal to 2. The preparation method of the sulfur-copper compound comprises the following steps: dissolving inorganic salt of copper in a dimethyl sulfoxide solvent, magnetically stirring to prepare a light green solution, then adding the light green solution into a reaction kettle, subsequently putting the reaction kettle into an air-blowing drying oven for heating and reacting, then centrifugally washing and drying to obtain a black one-dimensional rod-shaped sulfur-copper compound. The one-dimensional rod-shaped sulfur-copper compound can be used for preparing a negative electrode of a lithium ion battery. The one-dimensional rod-shaped sulfur-copper compound is prepared by a solvent thermal synthesis method; the synthesis method is simple and quick; specific surfactants and relevant templates are not required to be added. The prepared material has specific one-dimensional structures; the one-dimensional linear structures can be used for forming a good three-dimensional network structure by cross linking and stacking; the transmission of lithium ion electrons and infiltration of electrolyte are facilitated, so that the one-dimensional rod-shaped sulfur-copper compound has good electro-chemical properties.

The invention belongs to the technical field of advanced nano-composite materials and particularly provides an inorganic magnetic three-dimensional ordered macro-porous (3DOM) material and a preparation method thereof. The preparation method comprises the following steps: firstly, dispersing magnetic nano-particles and polymer microspheres in a solution, so that the gaps formed by arranging the polymer microspheres in an ordered manner can be filled with the magnetic nano-particles by the evaporation self-assembly of the solution; then, filling the remaining gaps of the polymer microsphere/magnetic nano-particle composite material with inorganic oxide sol by the nano-casting method, so that the ordered composite structure can be fixed; and finally, calcining in the presence of nitrogen to remove the polymer microspheres, so as to obtain the 3DOM material. The magnetic 3DOM material has the advantages of higher magnetic response and higher stability, and the 3DOM material is provided with ordered macro-pores which are communicated on a three-dimensional basis. Therefore, the invention is widely applicable in the aspects of bio-separation, drug delivery, catalytic loading and the like. The preparation method is simple and the materials are easily available. Therefore, the invention is suitable for large-scale production.

The invention discloses synthesis and application of a nano carbon fiber electrocatalyst containing cobalt-molybdenum oxide. The synthesis is characterized in that a cobalt nitride-phosphomolybdenum polyacid ion crystal compound is firstly synthesized, is mixed with polymer polyacrylonitrile for electrostatic spinning, and is roasted to synthesize nano carbon fibers containing cobalt-molybdenum oxide. As an electrocatalyst, the nano carbon fiber electrocatalyst containing cobalt-molybdenum oxide has very catalytic activity, has catalytic activity under different acid and alkaline conditions, and can be used in hydrogen evolution and oxygen evolution fuel cells.

The invention discloses a preparation method of a low-temperature white-light rare earth-organic coordination polymer. The preparation method comprises the following steps: weighing a ligand P-terphenyl-2,2'',4,4''-tetracarboxylic acid (H4L), a rare earth salt Eu2(SO4)3.8H2O, a rare earth salt Tb2(SO4)3.8H2O and a rare earth salt Dy2(SO4)3.8H2O respectively and adding into a glass bottle, wherein the mass ratio of the four components is 8 to 1 to 1 to 7; adding N,N-diethylformamide and distilled water into a mixture; after uniformly mixing by ultrasounds, putting the glass bottle into a drying oven and reacting at 85 DEG C for 4 days; taking out the glass bottle and naturally cooling to room temperature to obtain a yellow rhombus-shaped transparent crystal; washing the crystal with the distilled water and collecting the crystal; airing at room temperature to obtain the low-temperature white-light rare earth-organic coordination polymer. Meanwhile, the invention further discloses fluorescence regulation and control of the low-temperature white-light rare earth-organic coordination polymer. A synthesis method of the compound, provided by the invention, is simple and the compound is simple in structure and can be stored and preserved in the air for a long period.

The invention discloses a plastic scintillator microsphere applicable to the field of nuclear detection, and a preparation method and application thereof. The scintillator resin components comprise a matrix material, a scintillating substance and a wave shifter, the particle size of the plastic scintillator microsphere is smaller than or equal to 1mm, and more specifically, the matrix material of the plastic scintillator microsphere is formed by polymerizing an unsaturated matrix monomer containing an active group, and the matrix monomer is styrene or vinyl toluene. The scintillating substance is 2, 5-diphenyl oxazole, and the wave shifter is 1, 4-bis (5-phenyl oxazole) benzene or-bis-(sigma-methyl styryl) benzene. The microspheres disclosed by the invention have very good physical and chemical stability, and have the advantages of low raw material price, wide raw material source, simple and convenient preparation method and the like. The plastic scintillator provided by the invention can be applied to continuous monitoring of radioactivity of a solution, or can be applied to preparation of a liquid scintillation spectrometer.

The invention belongs to the technical field of adsorption materials, and discloses a magnetic adsorption material containing humic acid as well as a preparation method and an application thereof. The method comprises the following steps: 1) taking iron-containing solid waste and organic solid waste as precursors of the humic acid-containing magnetic adsorption material; 2) roasting the humic acid-containing magnetic adsorption material precursor to obtain a magnetic adsorption material; or 3) carrying out secondary hydration oxidation on the magnetic adsorption material to obtain the humic acid-containing magnetic adsorption material. The method is simple and low in cost, the prepared adsorption material has good adsorption performance on heavy metal ions, dyes and antibiotics, and the purpose of treating waste with waste is achieved. The adsorption material is excellent in magnetic property, high in chemical stability and excellent in regeneration performance, and meets the requirements of large-scale industrial production and popularization and use. The adsorption material is used for removing heavy metal ions, dyes and/or antibiotics in a water body.

The invention provides fluorescent carbon quantum dots with scale inhibition performance as well as a preparation method and application of the fluorescent carbon quantum dots. The preparation methodof the carbon quantum dots comprises the following steps: dissolving polyacrylic acid (PAA) in deionized water, adding polyamine, and uniformly mixing; and then carrying out a closed hydrothermal reaction, cooling the reaction liquid to room temperature after the reaction is finished, and filtering to obtain filtrate that is a solution of the fluorescent carbon quantum dots with the scale inhibition performance. The obtained fluorescent carbon quantum dots have high scale inhibition performance, have good scale inhibition performance on calcium phosphate, calcium sulfate and calcium carbonate,and provide a brand-new idea for preparing the green and environment-friendly scale inhibition type fluorescent carbon quantum dots.

The invention relates to biological-based polyamide and apreparation method thereof. Biological bases 1,9-azelaic acid and 1,10-decamethylene diamine prepared by adopting renewable biological resources perform direct melting condensation reaction, the biological-based polyamide can be obtained and is specifically biological-based polyazylenediamine.Only water is used as a solvent in the whole synthetic process without any organic solvent or additive, so that the phenomenon that introduced organic solvents and additives change the physical and chemical parameters and properties of the monomersand amine salt in the polymerization process and accordingly the whole polymerizing technological process is influenced can be prevented. The water is used as the solvent, so that the biological-based polyamide is clean and environmentally friendly and conforms to the purpose that biological-based high-molecular materials are green, environmentally friendly and cyclically regeneratable. In addition, the water is used as the solvent, a reaction medium is provided in the polymerization process, and energy transfer, charging and follow-up reaction are promoted.

The invention provides a preparation method of a Ru nano-material with different morphologies and application of the preparation method. The preparation method of the Ru nano-material with the different morphologies comprises the steps that (1) a Ru source is added into ethylene glycol for sufficient and uniform stirring; (2) then different gas is introduced, and reaction, cooling, washing and drying are carried out under 120-200 DEG C; and (3) an obtained catalyst and carbon black are mixed uniformly, drying is carried out after uniform ultrasound, then thermal treatment is carried out to obtain Ru/C, and the Ru/C is used for an electrochemical performance test. Ru is uniformly distributed on the carbon black, and Ru presents a shape of a nanowire, a nano sheet clip and nano-particles; the OER performance of the Ru nanowire, the nano sheet clip and the nano-particles greatly exceeds industrial RuO2 and industrial IrO2 catalysts under the acidic condition, and voltages corresponding tothe electric current density of 10mA/cm<2> of the OER performance of the Ru nanowire, the nano sheet clip and the nano-particles separately reach 224mV, 286mV and 252mV (vs.RHE) under the acidic condition. The catalyst has good stability under the acidic condition. The preparation method of the Ru nano-material with the different morphologies is simple, the catalyst has higher activity and stability, and a better application prospect is achieved on the aspect of electrolysed water.

The invention provides a preparation method of multi-aperture manganese dioxide. The preparation method comprises the following steps: S1), preparing manganese acetate gel A; S2), preparing manganeseacetate gel B; S3), preparing manganese acetate gel C; S4), sequentially applying the manganese acetate gel A, the manganese acetate gel B and the manganese acetate gel C to flake graphite, and then drying; and S5), heating to obtain multi-aperture manganese dioxide. By directly synthesizing manganese dioxide on flake graphite, the synthesis method is simple and convenient. Starch molecules with different pore sizes are used for making pores of manganese dioxide to form multi-aperture manganese dioxide. Pores are movable when a three-level pore structure is heated, the large pores in the mostsuperficial surface move downwards while the small pores in the innermost surface move upwards, and the pores become more uniform by moving and merging, thereby further increasing the conductivity ofmanganese dioxide. The synthetic method is beneficial to environment protection, and manganese acetate and starch are both simple and easily available material that can be used in large-scale industrial production.

The invention discloses a synthetic method for basic ionic liquid. The basic ionic liquid disclosed by the invention is synthesized in a salt exchange manner by adopting the two-step synthetic method. The synthetic method has the advantages that the basic ionic liquid not only has the advantages of inorganic base and is simple to operate, but also has the new characteristics of stability in water and air, easiness for separation and high catalytic efficiency and reusability; in the base catalysis process, a novel environmental-friendly base catalyst possibility is provided. The basic ionic liquid is easy to regulate, has no volatility or corrosivity and can be miscible with various organic solvents, and thus, the basic ionic liquid shows huge potential of replacing a conventional base catalyst and has important industrial application prospect.

The invention provides a preparation method of rare earth element modified platinum ruthenium nanoparticles, which comprises the following steps: (1) preparing a mixed solution of a rare earth metal salt, a ruthenium salt and a platinum salt, adding the mixed solution into DMF (Dimethyl Formamide), and fully and uniformly stirring, (2) then introducing hydrogen, reacting at 120-160 DEG C, and then standing and cooling to room temperature to obtain the rare earth element modified platinum ruthenium nanoparticles. Centrifuging, washing and drying reactants to obtain rare earth oxide modified ruthenium platinum nanoparticles; and (3) uniformly mixing the obtained catalyst and carbon black, carrying out uniform ultrasonic treatment, drying, and carrying out heat treatment to obtain PtRu-REE/C which is used for electrochemical performance testing. Wherein the HOR performance of the Pt1Ru1-Er2O3/C and the Pt1Ru1-EuOx/C nanoparticles under the alkaline condition is superior to that of commercial Pt/C. The method is simple, short in experimental process and mild in condition; a trace amount of rare earth is introduced into a platinum-ruthenium system, fine combination of characteristic structures is generated in combination with a solvothermal synthesis technology, and the obtained rare earth oxide modified ruthenium-platinum nanoparticles show excellent and remarkable HOR performance and are very suitable for large-scale production.

The invention discloses a synthesis method for preparing a high-cost-performance lithium iron phosphate precursor by controlling crystallization, and relates to the technical field of battery materials, and the synthesis method comprises the following steps: S1) preparing a mixed solution of lithium salt, ferrous salt and phosphate, wherein the pH value of the mixed solution is less than 4; s2) stirring the mixed solution obtained in the step S1) at room temperature, slowly adding alkali to adjust the pH value to 6-7, heating and pressurizing the solution to a set temperature and a set pressure, and carrying out heat and pressure preservation reaction for 1-6 hours; s3) filtering the liquid to obtain a solid precipitate, and washing and drying the liquid to obtain a lithium iron phosphate precursor, wherein the set temperature ranges from 80 DEG C to 120 DEG C and the set pressure ranges from normal pressure to 0.3 MPa. The synthesis method of the lithium iron phosphate precursor disclosed by the invention is simple and rapid, the reaction conditions are easy to control, and the method is convenient to popularize and apply and beneficial to industrial implementation.