2668 results about "Thio-" patented technology

The invention provides a salt-responsive temperature-resistant salt-resistant water-based drilling fluid tackifying filtrate reducer as well as a preparation method and application thereof, and belongs to the technical field of drilling. The tackifying filtrate reducer is prepared from the following raw materials in parts by mass: 30 to 50 parts of 1-(2-carboxyethyl)-2-vinylpyridine, 20 to 40 parts of (3-(methacrylamido) propyl) dimethyl (3-thiopropyl) ammonium hydroxide inner salt, 35 to 55 parts of N, N-dimethylacrylamide, 10 to 25 parts of 4-vinylpyridine, 300 to 500 parts of water and 1 to 5 parts of an initiator. According to the filtrate reducer, cations and anions are concentrated on one monomer molecule, so that the synthesized product contains the cations and the anions with the same charge number, has good adsorption capacity and salt response characteristics, is compatible with salt essentially, can effectively resist high temperature and high salt, and can be recycled. And the viscosity-increasing and filtrate-reducing agent has good viscosity-increasing and filtrate-reducing effects on the drilling fluid.

The invention discloses a corrosion-resistant and anti-aging plastic packaging film and a preparation method thereof, and is used for solving the technical problem that the corrosion resistance and ultraviolet aging resistance of a packaging film in the prior art need to be further improved. The polypropylene composite material comprises the following raw materials in parts by weight: 60-80 parts of modified polypropylene resin, 1-2 parts of a compound nucleating agent, 10-15 parts of a modified filler, 1-2 parts of an antioxidant, 1-2 parts of an ultraviolet light absorber, 1-2 parts of a light stabilizer and 3-5 parts of a plasticizer, the tensile property of the material is improved through crystal form remolding, and the flame retardant property of the material is improved through synergistic cooperation of an internal phosphate structure, an aluminum element and thiocyanuric acid and siloxane chain segments in the material; and the ultraviolet light absorber cross-linked by the compound nucleating agent, the modified filler and the siloxane chain segment are synergistically matched, so that the ultraviolet aging resistance of the material is remarkably improved.

The invention discloses a hydrophobic and oleophobic modified epoxy resin, which is prepared from the following components in parts by mass: 2 to 5 parts of thiolactone terminated fluorinated prepolymer, 15 to 16 parts of 4, 4 '-diaminodiphenylmethane, 0.13 to 0.14 part of base catalyst, 25 to 26.5 parts of epoxy resin and the balance of tetrahydrofuran solvent, wherein the thiolactone-terminated fluorinated prepolymer is prepared from thiolactone acrylamide, fluorinated acrylate and a photoinitiator in a mass ratio of (2-3): 1: (0.07-0.09) through a free radical polymerization copolymerization chemical reaction under the induction of ultraviolet light, and the thiolactone-terminated fluorinated prepolymer is obtained; wherein thiolactone acrylamide is prepared from DL-homocysteine thiolactone hydrochloride, a NaHCO3 solution and acryloyl chloride according to the mass ratio of 1: (1.3-1.5): (1.1-1.3), the oleophobic and hydrophobic modified epoxy resin provided by the invention effectively solves the problem that an epoxy resin coating in the prior art is poor in oleophobic performance and hydrophobic performance, and the oleophobic and hydrophobic modified epoxy resin has the advantages that the oleophobic and hydrophobic properties of the epoxy resin coating are improved; therefore, the oleophobic and hydrophobic properties of the epoxy resin coating are improved.

The invention belongs to the field of photocatalytic materials, and particularly relates to a high-entropy sulfide and a preparation method and application thereof. The high-entropy sulfide is granular, the molecular general formula is (MnaFebCocCudZe) xS, x is equal to 1, and the atomic ratio of Mn to Fe to Co to Cu to Zn is a: b: c: d: e of (1-2): (1-2): (1-2): (1-2): (1-2): (1-2): (1-2). The preparation method comprises the following steps: S1, dissolving metal salt in a mixed solvent of isopropanol and glycerol according to the atomic ratio of metal elements, and carrying out solvothermal reaction to obtain a precursor; and S2, dispersing the precursor in ethanol, adding thioacetamide as a sulfur source, and carrying out solvothermal reaction to obtain the high-entropy sulfide. The high-entropy sulfide disclosed by the invention is used as a photocatalytic material and shows excellent photocatalytic performance.

The invention relates to the technical field of copper metallurgy processes, and discloses a method and device for strengthening copper smelting through thiocarbon self-heating and chaotic stirring, and the method comprises the following steps: monitoring the temperature of a furnace kiln in real time by adopting a non-contact measurement technology; adding of mineral aggregates is adjusted according to the furnace temperature monitored in real time, the proportion of the added mineral aggregates is input into a sulfur-oxygen matching program, and the minimum threshold value of the oxygen inlet amount is calculated; inputting the furnace temperature, the slag thickness, the copper matte thickness and the minimum oxygen inlet amount threshold value which are monitored in real time into a nonlinear chaotic flow calculation program, and calculating the injection speed, the oxygen supply concentration and the injection angle; and after the smelting process is carried out, the temperature of the furnace kiln is fed back in real time according to the adjustment of the injection speed, the oxygen concentration and the injection angle. The device comprises a furnace top area, a furnace body area, a hearth area, a furnace wall, a feed opening, an uptake flue, a secondary air blowing gun, a copper matte discharge opening, a side blowing spray gun, a slagging chamber flue and a slagging opening. According to the invention, the energy utilization rate, the production efficiency and the product quality in the smelting process can be improved.

The present invention relates to a polyisocyanate composition comprising at least one bridging cistetrahydrofuran-2,5-diyl-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and / or biuret structure and / or comprising at least one bridging trans-tetrahydrofuran-2,5-diyl)-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and / or biuret structure.

One aspect of the invention relates to a method for producing a glass body or semi-finished product from a polymerisable mixture of isocyanates and isocyanate-reactive components, wherein the mixture has at least two of the following components: - a poly(thio)urethane prepolymer prepared from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate-reactive groups compared to isocyanate groups; - a poly(thio)urethane prepolymer prepared from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate groups compared to isocyanate-reactive groups; and / or - a thiol component; and / or - an isocyanate component, wherein the mixture has at least one photobase generator. Further aspects of the invention relate to a glass body or a glass body provided with an additional layer, each produced with a method according to another aspect of the invention, as well as a polymerisable mixture.

The invention relates to an impact-resistant chlorinated polyvinyl chloride composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite material comprises the following components: 100 parts of CPVC resin, 6.5 to 9.5 parts of a modified impact modifier, 2.6 to 3.2 parts of a heat stabilizer, 1.5 to 2 parts of a lubricant, 1.2 to 1.6 parts of a processing aid, 0.2 to 0.25 part of a light stabilizer and 8 to 11 parts of a filler, the modified impact modifier takes a POSS cage structure as a core, a branch chain sequentially contains thioamide-secondary amine-tertiary amine structures, a polarity gradient is formed and fully extends into a macromolecular chain of CPVC to transmit and dissipate impact energy, meanwhile, the amine structure interacts with chlorine groups in a molecular chain of CPVC to form molecular anchoring, expansion of crazes is inhibited, and the impact strength of the CPVC is improved. The continuity and the stability of a bonding interface are maintained, so that the composite material keeps relatively high mechanical strength and thermal stability.

The invention discloses a flame-retardant insulating powder coating for a new energy automobile and a preparation method of the flame-retardant insulating powder coating, and belongs to the technical field of coatings. The flame-retardant insulating powder coating for the new energy automobile is prepared from the following raw material components in parts by mass: 380 to 384 parts of epoxy resin, 56 to 58 parts of a toughening agent, 5 to 10 parts of modified flame-retardant filler, 100 to 101 parts of a composite curing agent, 5 parts of a flatting agent, 1 part of benzoin and 0.7 part of an accelerant, the toughening agent is obtained by carrying out a reaction on an isophorone diisocyanate tripolymer, 4-bromophenol and N-p-coumaroyl tyramine; the modified flame-retardant filler is obtained by firstly wrapping hexagonal boron nitride with polydopamine and then modifying with a silane coupling agent; the silane coupling agent is obtained by combining 4-benzonitrile oxygen butyl trimethoxy silane and a sulfydryl silane coupling agent; and the composite curing agent is obtained by combining 4, 4-diaminodiphenylmethane and amino-sulfydryl functional organic polysiloxane.

The invention belongs to the field of photocatalysts, and discloses a MoS2 / CdS composite photocatalyst, which is a composite material prepared by taking cadmium acetate as a cadmium source, thioacetamide as a sulfur source and ethylenediamine as a reaction solvent, synthesizing a CdS nanorod through a one-step hydrothermal method, and growing a MoS2 promoter at one end of the CdS nanorod. The invention also discloses an application of the MoS2 / CdS composite photocatalyst in hydrogen production by decomposing water molecules under an illumination condition. The MoS2 cocatalyst with an electron harvesting agent function is grown at one end of the CdS nanorod, so that the performance is improved, and the use of noble metals is avoided. The MoS2 / CdS composite photocatalyst disclosed by the invention has excellent catalytic activity and stable hydrogen evolution activity under a simulated sunlight condition.

The invention relates to a low-temperature graphite negative electrode material and a preparation method thereof, and belongs to the technical field of high polymer materials. According to the prepared low-temperature graphite negative electrode material, firstly, the surface of graphite is pre-oxidized through potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, and then under the action of sodium nitrate, potassium permanganate and hydrogen peroxide, graphite oxide is prepared; then, ammonium molybdate hydrate and thioacetamide are used as a molybdenum source and a sulfur source, graphite oxide is used as a supporting material, a molybdenum disulfide-graphite compound is synthesized, and the conductivity and the cycling stability are improved; secondly, the surface of the negative electrode is coated with amorphous resin carbon / nickel oxide, so that the ion diffusion efficiency of the low-temperature graphite negative electrode material is enhanced, and the electrochemical lithium storage performance is improved in a low-temperature environment; and finally, the surface of the amorphous resin carbon / nickel oxide is coated with a layer of polythiophene film, so that the rate capability of the negative electrode material is improved due to large surface area and high pores.

The invention discloses a ternary chalcogenide heterojunction catalytic material as well as a synthesis method and application thereof, and belongs to the field of photocatalysts. The synthesis method comprises the following steps: dissolving ZnCl2 and InCl3. 4H2O in an ethanol water solution, stirring, adding thioacetamide into the mixed solution, continuously stirring, carrying out hydrothermal reaction, cooling, centrifuging and washing on the solution, and drying to constant weight to obtain a material Zn2In2S5; the preparation method comprises the following steps: dispersing Zn2In2S5, thiourea, 1-hexadecyl-3-methylimidazole bromide and Bi (NO3) 3.5 H2O in absolute ethyl alcohol, carrying out ultrasonic dispersion, carrying out a hydrothermal reaction on the mixture, cooling, centrifuging, washing, and drying to constant weight to obtain the powder material Zn2In2S5 / Bi19S27Br3. The photocatalytic activity is greatly improved by constructing the heterojunction, pollutant degradation is achieved, and the photocatalyst has the advantages of being good in stability and capable of being repeatedly used.

A method of formulating novel humic material is disclosed comprising mixing one or more portions of Dimethylphenylpiperazinium (DMPP) with one or more portions of N-(N-butyl) thiophosphoric triamide (NBPT) with one or more portions of Isobutylidene-diurea (IBDU) with one or more portions of Polyaspartic Acid with one or more portions of Chitosan and a portion of Mycorrhizae and Rhizobia to form a portion of biostimulant material; obtaining a portion of seaweed harvest and crushing and drying said portion of seaweed to form a portion of seaweed powder; Obtaining a portion of leonardite and crushing said portion of leonardite to form a portion of humic raw material; mixing one or more portion of animal manure with one or more portion of stover with one or more portion of organic waste to form a portion of compositing mix and composting said compositing mix to form a portion of composted material; obtaining a portion of plant waste and subjecting said portion of plant waste through an anaerobic combustion to form a portion of bio char; mixing said portion of bio char with said portion of composted material with said portion of humic material to form a portion of humic processed material; adding a portion of artificial taggant to said humic processed material to form tagged humic material; mixing said tagged humic material with said portion of biostimulant material to form a portion of biostimulant humic material; adding a taggant to said portion of biostimulant humic material to form a portion of tagged biostimulant humic material; mixing one or more portion of phosphorus with a portion of potassium and a portion of nitrogen and a portion of trace minerals to form portion of raw fertilizer; mixing said portion of raw fertilizer with said portion of tagged biostimulant humic material to form a portion of tagged fertilized biostimulant humic material.

The invention provides a flame-retardant polyolefin composition as well as a preparation method and application thereof, and the flame-retardant polyolefin composition comprises the following components in parts by weight: 13-22 parts of an ethylene-vinyl acetate copolymer, 1.5-8.5 parts of linear low density polyethylene, 8-17 parts of a polyolefin elastomer, 35-55 parts of a flame retardant and 0.5-2.5 parts of an antioxidant. The antioxidant comprises a main antioxidant and an auxiliary antioxidant; the main antioxidant comprises a hindered phenol antioxidant and an amine antioxidant; and the auxiliary antioxidant comprises a thioester antioxidant and / or a phosphite ester antioxidant. According to the flame-retardant polyolefin composition disclosed by the invention, the ethylene-vinyl acetate copolymer, the linear low-density polyethylene and the polyolefin elastomer are compounded according to a specific content, and meanwhile, the antioxidant with specific composition is matched, so that the flame-retardant polyolefin composition is good in heat resistance, aging resistance and precipitation resistance; meanwhile, the mechanical property is good.

The invention relates to an organic molecule, in particular for the application in optoelectronic devices. According to the invention, the organic molecule includes or consists of a structure represented by Formula IwhereinR1 is selected from the group consisting of hydrogen and C6-C12-aryl, which is optionally substituted with one or more C1-C6-alkyl substituents, andRa is at each occurrence independently selected from the group consisting of: hydrogen, deuterium, N(R5)2, OR5, Si(R5)3, B(OR5)2, B(R5)2, OSO2R5, CF3, CN, F, Br, I, C1-C40-alkyl, C1-C40-alkoxy, C1-C40-thioalkoxy, C2-C40-alkenyl, C2-C40-alkynyl, C6-C60-aryl, and C2-C57-heteroaryl.

The invention relates to a formamidine thiosulfate second-order nonlinear optical crystal and preparation and application thereof, the chemical formula of the crystal material is [CH (NH2) 2] 2SO3S, the molecular weight is 203.27, the crystal material belongs to an orthorhombic crystal system, the space group is P212121, the unit cell parameter is # imgabs 0 # alpha = beta = gamma = 90 degrees, Z = 4, and the unit cell volume is # imgabs 1 #. Under 1064nm laser irradiation, the frequency doubling intensity of the powder is about two times that of monopotassium phosphate crystals, and phase matching can be realized. In addition, the crystal material has a wide light transmission wave band, the ultraviolet absorption cut-off edge is 253 nm, the optical band gap is 4.90 eV, and the crystal material is easy to grow. The wavelength range of the coherent light source can be expanded by using optical frequency conversion technologies such as second harmonic generation and optical parametric amplification. Therefore, the crystal material has important application value in the fields of laser frequency conversion, photoelectric information storage and the like.

The invention discloses a low-temperature zinc ion battery high-entropy eutectic electrolyte and a preparation method and application thereof, and relates to the field of batteries, the electrolyte comprises a hydrogen bond donor, a hydrogen bond acceptor and a solvent; the hydrogen bond donor is at least one of methyl sulfonamide, thioformamide, butyramide, asparagine, tert-butylamine, dimethyl propane diamine, oxalyl diamine, benzamide, sulfamide and ethyl sulfonamide; the hydrogen bond receptor is at least one of aspartic acid, glutamic acid, methionine, zinc chloride, zinc perchlorate, zinc fluoborate and zinc acetate; the preparation method comprises the following steps: mixing a hydrogen bond donor and a hydrogen bond acceptor, and heating to convert a solid into a liquid phase; and adding a solvent, and uniformly mixing to obtain the product. The invention also provides a zinc ion battery containing the electrolyte. The high-entropy eutectic electrolyte has the beneficial effects that-NH2 and halogen or carboxyl form hydrogen bonds to perform eutectic reaction, the freezing point of the eutectic solution is lower than that of a reactant, and the solvent is added to improve the confusion degree of the electrolyte, so that the high-entropy eutectic electrolyte is prepared.

The invention relates to the field of photoelectrocatalysis, and provides a preparation method and application of a cerium-based double-layer composite material coated with indium zinc sulfide, and the preparation method comprises the following steps: dispersing Ce (IV)-MOF in DMF and methanol, adding a hydroxyl-containing organic ligand, carrying out room temperature ultrasonic treatment to obtain modified MOF, dispersing the modified MOF in water and glycerin, adding a zinc salt and an indium salt, stirring, adding thioacetamide, stirring, filtering, washing, and drying to obtain the cerium-based double-layer composite material coated with indium zinc sulfide. And heating to obtain the product indium zinc sulfide coated cerium-based double-layer composite material. According to the invention, an ultrasonic-assisted MOF ligand exchange technology is utilized, so that an MOF regular octahedral framework structure is well maintained; the ZnIn2S4 material is compounded through in-situ growth of ZnIn2S4, the compounding synthesis temperature and a solution system are optimized, a ZnIn2S4 double-layer coating structure is obtained, and the yield and dispersity of ZnIn2S4 are improved. And the prepared ZnIn2S4 / MOF composite material has excellent reaction efficiency and stability of photoelectrocatalytic hydrogen production.

Provided are: a crystalline sulfide solid electrolyte, which has an improved ionic conductivity while adopting a liquid phase method, contains predetermined atoms, has a diffraction peak in X-ray diffractometry using a predetermined CuKα ray, and has a thio-LISICON Region II-type crystal structure as a basic structure; and a method for producing a crystalline sulfide solid electrolyte, the method including mixing using predetermined complexing agents and an instant drying step.

The invention relates to a hyaluronic acid-polyurethane composite material based on a double dynamic network and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out hydrophobic modification reaction on hyaluronic acid and aminophenylboronic acid to obtain aminophenylboronic acid modified hyaluronic acid; the preparation method comprises the following steps: mixing polytetrahydrofuran ether glycol, polyethylene glycol and isophorone diisocyanate, carrying out a primary reaction, adding trimethylolpropane tri (3-mercaptopropionic acid) ester, carrying out a secondary reaction, adding tannic acid, and carrying out a third reaction to obtain tannic acid-terminated dynamic thionocarbamate polyurethane; and mixing the amino phenylboronic acid modified hyaluronic acid with the tannic acid terminated dynamic thionocarbamate polyurethane for reaction to obtain the hyaluronic acid-polyurethane composite material with the double dynamic networks. Compared with the prior art, by introducing a'thionocarbamate-borate 'double-dynamic network, high toughness, high strength, good self-repairability and repeatable processability in an extreme environment are realized, and the material is particularly suitable for manufacturing and repairing of key components in an LNG ship body and a heat insulation system thereof.

The invention discloses a method for leaching precious metal through catalytic oxidation of thiosulfate, which comprises the following steps: mixing a copper-containing catalytic system-thiosulfate solution with a precious metal-containing material, and carrying out leaching reaction to obtain a precious metal leachate; wherein a copper-containing catalytic system in the copper-containing catalytic system-thiosulfate solution is a copper-iminodiacetic acid complex. The precious metal is extracted by adopting a copper-iminodiacetic acid catalytic system, the leaching rate of the precious metal and the consumption of thiosulfate can be considered, the leaching effect is remarkably superior to that of an existing copper ammonia system, and industrial application is easy to achieve.

The invention relates to the technical field of polymer photoelectric materials, in particular to a preparation method of a supramolecular gel electrolyte. The method comprises the following steps: esterifying tetraphenylethylene alcohol and methacryloyl chloride to form tetraphenylethylene methacrylate, and performing staged linear heating polymerization on the tetraphenylethylene methacrylate, 3-(methacrylamido) propyl dimethyl 3-thiopropyl ammonium oxide inner salt, acrylic acid, tetraphenylethylene methacrylate and 4-vinylpyridine under the action of ammonium persulfate to obtain a tetraphenylethylene copolymer. And finally, soaking in a lithium chloride aqueous solution to obtain the supramolecular hydrogel electrolyte. The hydrogel obtained by the invention has high mechanical strength and high ionic conductivity, and is suitable for energy storage devices such as flexible supercapacitors and the like.

The invention provides a beta '-sulfo-alpha, beta-unsaturated gamma-lactam derivative as well as a preparation method and application thereof, and belongs to the technical field of organic chemical synthesis. The beta '-thio-alpha, beta-unsaturated gamma-lactam derivative has a structure as shown in a formula I. According to the method disclosed by the invention, cesium carbonate is taken as alkali, and a molecular skeleton of the beta'-thio-alpha, beta-unsaturated gamma-lactam derivative is constructed through free radical coupling and olefin isomerization processes under the condition of blue light irradiation. Bioactivity evaluation shows that the beta '-sulfo-alpha, beta-unsaturated gamma-lactam derivative prepared by the method disclosed by the invention has an inhibition effect on MDA-MB-231 human breast cancer cells.

Methods to generate novel acyl-tRNA species deploy an orthogonal synthetase that accepts α-hydroxy acids, α-thio acids, N-formyl-L-α-amino acids, and / or α-carboxyl acid monomers (malonic acids) that are formally precursors to polyketide natural products.

The invention provides a method for promoting acquisition of clean fuel by light / sound concerted catalytic degradation of waste plastics and upgrading and conversion thereof, which comprises the following steps: uniformly mixing g-C3N4, cadmium acetate and thioacetamide according to a predetermined proportion, pouring into a reaction kettle, placing in a high-temperature oven for a predetermined time, centrifuging, cleaning and drying to obtain a catalyst, the method comprises the following steps: loading a catalyst on the surface of aerogel, hydrogel or non-woven fabric to obtain an MTSJA-loaded catalyst, treating waste plastic with NaOH, adding the MTSJA-loaded catalyst, stirring under irradiation of a xenon lamp, starting ultrasound for reaction, and carrying out light / sound synergistic catalytic degradation on the waste plastic. According to the method, energy consumption is not needed, toxic and harmful gas is not generated, the purposes of energy conservation and environmental protection can be achieved, meanwhile, carbon dioxide in water can be catalytically reduced to generate clean energy such as methane in the process of degrading the waste plastic, and further obtaining of the energy is promoted.

The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a high-temperature-resistant hydrophobic anticorrosive coating as well as a preparation method and application thereof. The invention provides a high-temperature-resistant hydrophobic anticorrosive coating, which is prepared from the following raw material components in parts by weight: 100 to 140 parts of epoxy resin; 3 to 7 parts of 2-benzothiazole thiosuccinic acid; 2 to 6 parts of hydrophobically modified ZIF-67 (at) MgAlCeFe-LDH (layered double hydroxide); 4-8 parts of a filler; 2-6 parts of a dispersant; 1-3 parts of a defoaming agent; 2-4 parts of a coalescing agent; 15-35 parts of a curing agent; 20 to 30 parts of water; and 10 to 20 parts of ethanol. The hydrophobic property of the coating can be improved by adding hydrophobic modified ZIF-67 (at) MgAlCeFe-LDH, and the corrosion resistance of the anticorrosive coating is remarkably improved by matching with 2-benzothiazole thiosuccinic acid and utilizing the interaction between the ZIF-67 (at) MgAlCeFe-LDH and the 2-benzothiazole thiosuccinic acid. The anti-corrosion coating prepared by the method has excellent corrosion resistance, hydrophobic performance and high temperature resistance.

The invention discloses a catalytic material for self-circulation photocatalytic Fenton and a preparation method thereof, and relates to the technical field of catalytic materials, the method comprises the following steps: adding thioacetamide into a manganese chloride solution, mixing, stirring, adding ammonia water, and reacting at 180-200 DEG C for 18-24 hours to obtain alpha-MnS; the preparation method comprises the following steps: dispersing alpha-MnS in an ethanol solution, then adding thiourea, stirring and mixing, then soaking the foam iron-nickel in the mixed solution, carrying out ultrasonic treatment, and finally reacting for 6-14 hours at 120-140 DEG C to obtain the catalytic material for self-circulation photocatalytic Fenton. The invention also discloses the catalytic material for the self-circulation photocatalytic Fenton, which is prepared by the method. The catalytic material has efficient self-circulation photo-Fenton performance, and has great application value in pollutant degradation and wastewater treatment.

The embodiment of the invention provides a method for detecting the content of acrylamide in polyacrylamide and application of the method. The detection method comprises the following steps: respectively reacting acrylamide standard solutions with different concentrations with an inorganic acid solution and thiosalicylic acid in a water bath to obtain standard samples with different concentrations; performing high performance liquid chromatography ultraviolet detection on the standard samples with different concentrations to obtain peak areas of acrylamide in the standard samples with different concentrations, and obtaining a linear equation of a corresponding relationship between the concentration x and the peak area y; performing high performance liquid chromatography ultraviolet detection on the to-be-detected sample to obtain the peak area of acrylamide in the to-be-detected sample; and substituting the peak area of acrylamide in the to-be-detected sample into the linear equation, and calculating to obtain the concentration of acrylamide in the to-be-detected sample, the detection method provided by the embodiment of the invention is convenient to operate, and the separation effect, the detection accuracy and the precision can be effectively improved.

The invention belongs to the field of food processing, and particularly relates to an ostrich meat preservative and a preservation method. The ostrich meat preservative provided by the invention is prepared by matching and mixing the chitosan, the nisin and the tea polyphenol according to a specific proportion, so that the refrigeration refreshing time of the ostrich meat treated by the preservative can be effectively prolonged, the ostrich meat can maintain a relatively high L * value and a * value within 16 days of storage, the deterioration of meat color is delayed, the water-retaining property is remarkably improved, and the quality of the ostrich meat is improved. The content of thiobarbituric acid reactants and volatile basic nitrogen is obviously reduced, and fat oxidation and protein degradation are inhibited; the total number of bacterial colonies and the number of microorganisms such as coliform bacteria, pseudomonas, mould and saccharomycetes are obviously reduced. The growth and reproduction of putrefying bacteria can be effectively inhibited, and the cold fresh shelf life is prolonged.