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128results about How to "The synthesis steps are simple" patented technology

Preparation method of graphene/molybdenum disulfide composite material

The invention relates to a preparation method of a graphene/molybdenum disulfide composite material. The preparation method comprises the following process steps: (1) mixing glucose with ammonium tetrathiomolybdate, and performing grinding in an agate mortar; (2) mixing sodium chloride with potassium chloride, and performing ball milling in a ball milling machine; (3) uniformly mixing the material obtained in the step (1) with the material obtained in the step (2), and performing preheating treatment; (4) placing the mixed material after preheating treatment in a square porcelain boat, placing the porcelain boat in the middle position of a tubular furnace, leading inert gas for protection, and performing calcination under a certain heating rate; (5) performing heat preservation treatment after calcination; (6) under inert-gas protection, cooling naturally to room temperature, and taking out samples; (7) cleaning the obtained mixture with deionized water, and performing vacuum filtration so as to obtain products. According to the preparation method disclosed by the invention, cheap glucose is used as a carbon source, so that a new method for synthetizing graphene/ molybdenum disulfide nanocomposite materials is obtained, the synthesis steps are simple, the cost is low, and the preparation method has an industrial application value.
Owner:SHAOXING UNIVERSITY

Preparation method of graphite carbon coated iron-nitrogen-carbon solid-phase Fenton catalyst and its application

The invention relates to the technical field of preparing solid-phase Fenton catalyst, in particular to a preparation method of graphite carbon coated iron-nitrogen-carbon solid fenton catalyst and its application in organic wastewater treatment. The preparation method of the catalyst comprises the following steps: after mixing and melting the carbon source and the nitrogen source in a certain proportion, adding a certain proportion of iron source, fully stirring and dissolving the mixture, transferring the mixture to an oven at 150-180 DEG C for drying for 12-24 hours, and calcining under theprotection of nitrogen atmosphere to obtain the catalyst. The catalyst prepared by the invention is a graphite carbon coated FeN and Fe3C coexisting iron-nitrogen-carbon catalyst, the size of the nanoparticles is 5-30nm, the specific surface area of the catalyst is 80-300m2/g, and the FeN is the main active site for decomposing hydrogen peroxide. The catalyst of the present invention can be applied to electric-Fenton and Fenton systems and an organic wastewater with pH range of 3-9 is treated. The preparation method of the invention has the advantages of simple steps, easy availability of rawmaterials, excellent performance, high stability and recyclability.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Novel process for synthesizing cyclopropylboronic acid

ActiveCN101440100AThe synthesis steps are simpleThe process conditions are mild and easy to operateGroup 3/13 element organic compoundsBrominePulp treatment
The invention relates to a method for synthesizing an organic compound, in particular to a novel process for synthesizing cyclopropyl-boronic acid. The method comprises the following steps: a) synthesis of cyclopropyl-lithium, in which, cyclopropyl-bromine as a raw material reacts with metal lithium in an absolute ether solvent at a temperature of between 0 and 40 DEG C to obtain the cyclopropyl-lithium; and b) synthesis of the cyclopropyl-boronic acid, in which, the cyclopropyl-lithium of the step a) is transferred to an XB(NR)2 solution at a temperature of between minus 10 and 40 DEG C to be thermally preserved and stirred for 2 to 10 hours, wherein in the formula, X is halogen, R is alkyl; then, water is added into the solution to quench excess XB(NR2)2; acid is added into the solution to adjust the pH value to be between 2 and 3; a cyclopropyl-boronic acid crude product is obtained after liquid separation and drying treatment; and the cyclopropyl-boronic acid is obtained through pulping treatment by an alkane solvent. The method can be operated simply and conveniently, does not require ultralow temperature in the whole technological process, has good technological stability, and is easy for realizing industrialized production, thereby effectively improving the market competitiveness of the cyclopropyl-boronic acid.
Owner:大连双硼医药化工有限公司

Preparation method of hydrogel having G-quadruplex structure, and applications of hydrogel in killing of Staphylococcus aureus and Escherichia coli

The invention relates to a preparation method of a hydrogel having a G-quadruplex structure, and applications of the hydrogel in killing of Staphylococcus aureus and Escherichia coli, wherein a G-quadruplex structure is formed by using guanosine as a main body, and polyethylene glycol-b-polylysine having antibacterial performance is introduced to form the G-quadruplex hydrogel. According to the preparation method, guanosine forms a G-quartet under the stabilization of potassium ions, the vicinal diol of the guanosine and 2-formylbenzeneboronic acid form a dynamic boron ester bond, the primary amine in the polyethylene glycol-b-polylysine having a broad-spectrum antibacterial performance and the aldehyde group of the 2-formylbenzeneboronic acid form a dynamic imine bond, and the G-quartets are connected to form the G-quadruplex through the formations of the boron ester bond and the imine bond so as to form the antibacterial hydrogel. According to the present invention, the preparation method has advantages of simple and easily available raw materials, simple synthesis step, high yield and batch production; and the obtained hydrogel has advantages of stability, low biological toxicity, broad-spectrum antibacterial effect, efficient Gram positive bacterial /Gram negative bacterial killing, and easy promotion and application.
Owner:NANKAI UNIV

CuBTC type mesopore and micropore metal organic framework material and method for preparing same

InactiveCN105153204ALarge specific surface areaThe synthesis steps are simpleCopper organic compoundsHydrothermal synthesisMetal-organic framework
The invention belongs to the technical field of metal organic framework materials, and discloses a CuBTC type mesopore and micropore metal organic framework material and a method for preparing the same. The method includes dissolving Cu(NO<3>)<2><3>H<2>O in water and ethyl alcohol mixed solution and stirring the Cu(NO<3>)<2><3>H<2>O and the water and ethyl alcohol mixed solution to obtain first clear solution; dissolving H<3>BTC in ethyl alcohol and stirring the H<3>BTC and the ethyl alcohol to obtain second clear solution; uniformly stirring and mixing the first clear solution and the second clear solution with each other to obtain mixed solution, then adding dimethyl octadecyl [3-(trimethoxy silicon substrate) propyl] ammonium chloride into the mixed solution, and carrying out hydrothermal synthesis reaction under certain conditions to obtain reaction products; sequentially carrying out pumping filtration, forced-air drying, washing, pumping filtration and vacuum drying on the reaction products to obtain the CuBTC type mesopore and micropore metal organic framework material. The CuBTC type mesopore and micropore metal organic framework material and the method have the advantages that mesopore is successfully formed in the traditional micropore metal organic framework material CuBTC, products have large specific surface areas and pore volumes, and accordingly the CuBTC type mesopore and micropore metal organic framework material and the method have excellent application prospects in the aspects of macromolecular catalysis, adsorption, separation and the like.
Owner:SOUTH CHINA UNIV OF TECH

Synthesis and application of fluorescent reagent for selectively detecting cysteine based on aggregation-induced emission principle

ActiveCN106905199AThe synthesis steps are simpleEasier to mass produce and applyOrganic compound preparationSulfonic acid amide preparationFluorescent imagingLarge applications
The invention discloses a fluorescent reagent for selectively detecting cysteine based on an aggregation-induced emission principle, a synthesis method and application thereof. Benzophenone is used as an initial raw material for synthesizing a target compound TPENNO2. The detection research of the target compound TPENNO2 to sulfydryl-contained amino acids (such as the cysteine, homocysteine and glutathione) is developed, and the target compound TPENNO2 is discovered to have the good sensitivity and the high selectivity to the cysteine, and the interference to the homocysteine and the glutathione is small. Compared with the prior art, the fluorescent reagent has the advantages of simple synthesis, easily obtained raw materials, high target compound fluorescence quantum yield, and strong photobleaching resistant capacity. The defect of traditional fluorochrome that cannot be detected in the high concentration is avoided, and the target compound TPENNO2 is successfully used for the fluorescence imaging of a sulfhydryl compound in cells. The target compound TPENNO2 has the large application prospect in the aspects of selectively detecting the cysteine and detecting the content of the sulfhydryl compound in the cells.
Owner:GANNAN NORMAL UNIV
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