39 results about "Crotonic acid" patented technology

The invention relates to the technical field of pharmacy, and discloses a carbidopa-levodopa sustained release tablet and a preparation method thereof.The carbidopa-levodopa sustained release tablet is prepared from, by mass, 65.4%-68.0% of levodopa, 17.0%-18.5% of carbidopa, 0.1%-0.5% of an adhesive, 0.1%-0.5% of a lubricant and 0.1%-0.5% of a coloring agent. And the mass percentage of the sustained-release material is 8.0%-9.0%. According to the carbidopa-levodopa sustained-release tablet and the preparation method thereof, polyvinyl acetate-crotonic acid copolymer is selected as a sustained-release material, hydroxypropyl cellulose is selected as an adhesive, the defects existing in the prior art are overcome, the carbidopa-levodopa sustained-release tablet can well control slow release of carbidopa and levodopa, and the sustained-release effect is good. According to the present invention, the release curve is highly consistent with the release curve of the original development agent, such that the safety and the effectiveness of the medication can be significantly improved, the wet granulation process is adopted, the addition mode of the adhesive is adjusted, the granulation process problem that the granulation is not easily performed when the active component content is large is solved, the preparation process is simple, and the industrial production is easy.

The present invention relates to a recombinant organism or microorganism having a decreased pool of crotonic acid compared to the organism or microorganism from which it is derived due to at least one of: (i) an increased conversion of crotonyl-CoA into butyryl-CoA; and / or an increased conversion of butyryl-CoA into butyric acid; (ii) an increased conversion of crotonyl-CoA into 3-hydroxybutyryl-CoA; and / or an increased conversion of 3-hydroxybutyryl-CoA into 3-hydroxybutyric acid; (iii) an increased conversion of crotonic acid into crotonyl-CoA; (iv) an increased conversion of crotonyl-[acyl-carrier protein] into butyryl [acyl-carrier-protein]; (v) a decreased conversion of crotonyl-CoA into crotonic acid; and / or (vi) a decreased conversion of crotonyl-[acyl-carrier protein] into crotonic acid. Moreover, the present invention relates to the use of such a recombinant organism or microorganism for the production of alkenes with the enzyme ferulic acid decarboxylase. Further, the present invention relates to a method for the production of isobutene or butadiene by culturing such a recombinant organism or microorganism in a suitable culture medium under suitable conditions.

The present invention discloses an ion regulator, a preparation method and an application thereof. The ion regulator is formed by hydrogen bonding carboxylic acid and protein; the carboxylic acid is one or more of acrylic acid, crotonic acid and cinnamic acid; the protein is one or more of whey protein, soy protein and collagen. The ion regulator of the present invention can bind to cations in water to prevent scaling and avoid oil pipe corrosion; the ion regulator of the present invention belongs to the carboxylic acid compound and can effectively regulate the formation of agglomerated particles, while the low-charge organic matter in the hydrogen-bonded protein macromolecules can chelate with divalent cations, thereby stabilizing the ions in the fluid, controlling its agglomeration process, and thus preventing scaling. At the same time, the ions are combined to form nanoparticles, so that the size of the agglomerated particles can be controlled, and the agglomerated particles can be used for plugging, turning high-valent ions into "waste".

The invention discloses a production method and equipment for preparing ethyl trifluorocrotonate, and belongs to the technical field of reaction kettles.The production method and equipment for preparing ethyl trifluorocrotonate comprise a kettle body and a kettle cover which are matched with each other, and a plurality of feeding pipes are distributed on the kettle cover in the circumferential direction; a plurality of feeding pipes are arranged in the kettle body and are respectively connected with corresponding flow control valves, liquid adding pipes and exhaust ports, a discharging assembly for stably discharging is arranged at the bottom of the kettle body, a stirring assembly in movable contact with the inner wall of the kettle body is movably arranged in the kettle body, a rotating assembly connected with the stirring assembly is movably arranged on the kettle cover, and the rotating assembly is connected with the stirring assembly. An adjusting assembly matched with the rotating assembly is arranged on the kettle cover, a heat transfer module is arranged on the outer wall of the kettle body, and a control and display module electrically connected with electric equipment on the equipment is arranged on the outer wall of the kettle body. The device has the advantages of comprehensive and efficient stirring, uniform heating, inner wall cleaning, efficient impurity collection, reliable structure, intelligent control, simplicity, convenience and practicability.

A composite current collector, a preparation method therefor, an electrode, and a secondary battery. The composite current collector comprises: a polymer base film and composite layers provided on two sides of the polymer base film. Each composite layer comprises: a modified layer arranged on the polymer base film, and a metal layer arranged on the surface of the modified layer, wherein the material of the modified layer is a polymer formed by in-situ graft polymerization of a polymerized monomer and / or oligomer on the surface of the polymer base film; and the polymerized monomer comprises an acrylamide monomer, a crotonic acid monomer, or a combination thereof.

The application belongs to the technical field of biochemical synthesis, and particularly relates to a high stereoselectivity amino-cleaving enzyme and a synthesis method of (S)-3-aminobutyronitrile and a salt thereof. The high stereoselectivity amino-cleaving enzyme is selected from the amino acid sequences shown in SEQ ID NO. 6-8. The synthesis method comprises: performing an enzyme catalytic reaction on crotonic acid in the presence of the high stereoselectivity amino-cleaving enzyme to obtain (S)-3-aminobutyric acid with a chiral purity e.e. of 99.5% or more; reacting (S)-3-aminobutyric acid with di-tert-butyl dicarbonate, and then reacting with ammonium bicarbonate, and further performing dehydration and deprotection to obtain (S)-3-aminobutyronitrile hydrochloride. The application combines chemical method and enzyme method, avoids the use of highly toxic substances, is safe and efficient, improves the economic benefits in the industrialization process, and the overall route reflects the value of green chemical synthesis.

The invention discloses a method and system for simultaneously producing ε-caprolactone and crotonic acid. The system sequentially includes an oxidation tower, a first rectifying tower, a crystallization tower, and a second rectifying tower; an injection port and an exhaust port are provided on the outside of the oxidation tower, and a bubbler is provided inside. A mixed solution of cyclohexanone, crotonaldehyde, and a solvent is input into the oxidation tower by the injection port, and oxygen is bubbled into the reaction solution by the bubbler in the oxidation tower; the bottom of the oxidation tower is connected to the first rectifying tower, the bottom of the first rectifying tower is connected to the crystallization tower, and the bottom of the crystallization tower is connected to the bottom extraction of the second rectifying tower. The present invention achieves the purpose of simultaneously producing ε-caprolactone and crotonic acid in a low-temperature reaction, while obtaining a product through simple two rectifications and a cooling crystallization, with low reaction and separation energy consumption and low cost.

The application discloses a preparation method of butyl acrylate. The butyl acrylate is prepared through esterification reaction of raw materials of acrylic acid and n-butanol. The acrylic acid includes acryloyloxypropionic acid, maleic acid and crotonic acid. The mass ratio of the acryloyloxypropionic acid to the maleic acid is 1:0.01-1, and the mass ratio of the crotonic acid to the acryloyloxypropionic acid is 1:5-500. The content of key impurities in the acrylic acid is ensured to be in a specific ratio, and the crude acrylic acid is directly used as a raw material for butyl acrylate production after removal of light components, so that the production cost of the butyl acrylate is greatly reduced, and raw material consumption and energy consumption are reduced. The application is a green and efficient production process.

This application provides a perovskite solar cell, a method for manufacturing the same, and a solar module, wherein the perovskite solar cell includes a perovskite light-absorbing layer comprising a perovskite material and a complexing agent, the complexing agent comprising one or more of hydroxycarboxylic acid-based complexing agents, organic phosphonic acid-based complexing agents, polyacrylic acid-based complexing agents, and polycrotonic acid-based complexing agents. The perovskite solar cell, a method for manufacturing the same, and a solar module of this application passivate defects, reduce ion movement of the perovskite, decrease the decomposition of the perovskite light-absorbing layer and the deactivation of each functional layer, and improve the efficiency and stability of the device.

The utility model discloses an anti-residual rectifying still for producing ethyl 3-amino-4, 4, 4-trifluorocrotonate, and relates to the technical field of rectifying still. The device comprises a rectification box, a motor is fixedly connected to the top of the rectification box, an electric push rod is arranged on the back face of the motor, the bottom of the electric push rod is fixedly connected with the top of the rectification box, a discharging pipe is fixedly connected to the bottom of the rectification box, an electric valve is arranged on the outer side of the discharging pipe, and a cleaning assembly is arranged in the rectification box. According to the utility model, the cleaning component is arranged, specifically, during discharging, the electric push rod is started to drive the connecting block to move downwards through the push-pull rod, the connecting block can drive the scraping ring to move downwards, the scraping ring scrapes off residual materials on the inner wall of the rectification box, so that the materials are discharged more thoroughly, and meanwhile, the conical ring can play a role in guiding flow, so that the residues are reduced again; and meanwhile, when the rotating rod rotates, the scraping rod is driven to rotate through the connecting rod, the scraping rod scrapes away residual materials on the surface of the conical ring, and the emptying rate is increased.

This invention provides an enzymatic method for the preparation of R-3-aminobutyric acid (GABA), belonging to the field of biochemistry. Using crotonic acid as a substrate and a recombinant aspartate enzyme mutant as a biocatalyst, an enzymatic reaction is carried out under suitable temperature and pH control to efficiently and stereoselectively prepare the product R-3-aminobutyric acid. This method utilizes *E. coli* as a host for heterologous expression of recombinant aspartate enzyme. The whole cells of the expression host are used as crude enzyme for the enzymatic reaction. After extraction and purification, high-purity R-3-aminobutyric acid is obtained, with a conversion rate exceeding 99% and a product purity >99% and >99.9% ee. This method features high conversion and high yield, and is easily industrialized.

Provided is a degradable crosslinking agent having high solubility in a solvent. The present invention relates to a decomposable cross-linking agent comprising a compound represented by formula (1). In formula (1), n > = 0, k > = 0, m > = 0, p1 > = 1, p2 > = 1, and p3 > = 1. R1, R2, and R3 independently represent a single bond, or a C1-500 hydrocarbon having or not having a substituent or a heteroatom. Q1, Q2, and Q3 are each independently selected from the group consisting of a hydroxyl group, an amino group, a thiol group, a hydrazide group, a carboxylic acid group, an anhydride group, a vinyl group, an allyl group, an acrylate group, a methacrylate group, a crotonate group, an isoprene group, an acrylamide group, a methacrylamide group, a crotonamido group, an epoxy group, an oxetanyl group, an oxazoline group, an isocyanate group, a carbodiimide group, and a hydroxymethyl group; and one or more reactive functional groups selected from the group consisting of a silanol group, a hydroxysilyl group, and an alkoxysilyl group. X1a, X1b, X2a, X2b, X3a, X3b, X4a, and X4b are each independently an oxygen atom, a sulfur atom, a single bond, a hydrocarbon group having 1-20 carbon atoms and having or not having a substituent, or-Nb-(B is a hydrogen atom or a hydrocarbon group), and one or more of X1a, X1b, X2a, X2b, X3a, X3b, X4a, and X4b are an oxygen atom, a sulfur atom, or-Nb-(B is a hydrogen atom or a hydrocarbon group). A1-A8 are carbonyl groups or single bonds, at least one of A1 and A2 is a carbonyl group, at least one of A3 and A4 is a carbonyl group, at least one of A5 and A6 is a carbonyl group, and at least one of A7 and A8 is a carbonyl group. Z independently represent a divalent or higher group including a siloxane structure, or a C1-500 hydrocarbon group having or not having a heteroatom. [Chemical Formula 1]

The invention discloses a synthesis method of an enamine compound and a recycling method of raw materials, and belongs to the technical field of pesticide chemical industry. According to the method, ethyl trifluoroacetoacetate is used as a raw material, substituted phenylacetic acid ammonium is used as an amination reagent, 3-amino-4, 4, 4-ethyl trifluorocrotonate is prepared through a reflux water diversion reaction in a specific organic solvent, and efficient recovery of the amination reagent is achieved through ammonia water mediation. Water generated by reaction is removed in time through reflux water diversion, raw material ester hydrolysis is effectively inhibited, and the yield of enamine is larger than or equal to 98%; and in the recovery process, sublimation is avoided by utilizing the high-boiling-point characteristic of substituted phenylammonium acetate, the problem of condenser blockage is solved, the recovery yield is greater than or equal to 99%, direct application can be realized, the cost is remarkably reduced, and green chemical requirements are met.

The invention discloses a microbacterium strain (Microbacterium sp.) TF-9 and application of the microbacterium strain (Microbacterium sp.) TF-9 in biological defluorination. The microbacterium strain (Microbacterium sp.) TF-9 is preserved in the General Microbiological Center of China Committee for Culture Collection of Microorganisms on April 3, 2025, and the preservation number is CGMCC NO.1. 64745. The microbacterium strain (Microbacterium sp.) TF-9 is applied to biological defluorination. According to the present invention, the bacterial strain is obtained through screening by using the trifluorosubstituted 4, 5, 5-trifluoro-4-pentenoic acid as the substrate, the defluorination effect of a variety of organic fluorides such as 1-fluorodecane, 4, 5, 5-trifluoro-4-pentenoic acid, 4, 4, 4-trifluoro-3-(trifluoromethyl) crotonic acid and the like can be achieved, and the substitution of fluorine atoms significantly inhibits the utilization of TF-9 on the trifluorosubstrate.

Described are acyl-CoA hydrolase (ACH) variants variants showing an improved activity in converting 3-methylcrotonyl-CoA into 3-methylcrotonic acid or an increased activity in converting crotonyl-CoA into crotonic acid as well as methods for the production of 3-methylcrotonic acid or isobutene or crotonic acid using such enzyme variants.

The purpose of the present invention is to provide a decomposable cross-linking agent which has high solubility in a solvent and is not susceptible to poor curing. The present invention relates to a degradable cross-linking agent which is represented by formula (1) (in formula (1), n > = 0, k > = 0, and m > = 0. R1, R2 and R3 independently comprise a hydroxyl group, an amino group, a hydrazide group, a thiol group, an isopentenyl group, a crotonamide group, a crotonate group, a carboxylic acid, an anhydride group, a vinyl group, an allyl group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a hydroxysilyl group, an epoxy group, an oxetanyl group, an oxazolinyl group and an isocyanate group at a terminal; and one or more reactive functional groups selected from the group consisting of a carbodiimide group, a hydroxymethyl group, a silanol group, and an alkoxysilyl group, and contains a single bond, a group containing a siloxane structure, or a hydrocarbon group optionally having a substituent or a heteroatom. (In the formula, A1 to A8 are each independently a carbonyl group or a single bond, at least one of A1 and A2 is a carbonyl group, at least one of A3 and A4 is a carbonyl group, at least one of A5 and A6 is a carbonyl group, and at least one of A7 and A8 is a carbonyl group. Each Z independently represents a group containing a siloxane structure, or a hydrocarbon group optionally having a heteroatom. ) (In the formula, (a) when n = 0, R1 and R2 are different from each other; (b) when n > = 1 and k = 0, (b-1) R1 is different from R2, and / or (b-2) Z comprising at least one asymmetric structure; (c) when n > = 1 and k > = 1, (c-1) at least one of R1, R2, and R3 is different, and / or (c-2) comprises at least one Z having an asymmetric structure.

The invention relates to the technical field of veterinary microbiology, in particular to a culture medium suitable for mycoplasma bovis culture and a preparation method of the culture medium. The culture medium is composed of a basic part and an auxiliary part, the basic part is prepared from 15-16 g / L of PPLO powder, 2-3 g / L of yeast extract, 2-3 g / L of sodium pyruvate, 1-1.5 g / L of glucose and 20-60 ml / L of phosphate buffer solution and ultrapure water (0.06-0.12 g / L of agar is added to a solid culture medium), and the auxiliary part is prepared from a proper amount of sodium chloride and a proper amount of sodium chloride. The auxiliary part comprises 1 to 1.5 ml / L of 10 * MEM, 8 to 12 ml / L of cholesterol with a mass concentration of 0.5%, 8 to 12 ml / L of glutamine with a mass concentration of 1%, 8 to 12 ml / L of crotonic acid with a mass concentration of 4%, 8 to 12 ml / L of malic acid with a mass concentration of 0.5%, 2 to 6 ml / L of a deoxynucleotide sodium salt solution with a molar concentration of 5 mmol / L, 40 to 60 ml / L of bovine serum and ultrapure water; the invention also provides a preparation method and application of the culture medium, which are simple and convenient, small in batch difference, simplified in production process and improved in product stability. According to the culture medium, stable mycoplasma bovis with high viable count can be obtained in a short time, and meanwhile, the problems of long detection period and the like of an existing quantitative bacterium concentration method can be effectively solved.

The application discloses an aldehyde oxidase mutant and application thereof in tiglic acid synthesis, and belongs to the technical field of biosynthesis. The mutant is obtained by double-mutation of alanine at the 80th position and lysine at the 143th position of the amino acid sequence shown in SEQ ID NO. 2. The aldehyde oxidase mutant has significantly improved enzyme activity (80.5 U / L) compared with wild-type aldehyde oxidase (20 U / L). The aldehyde oxidase mutant catalyzes tiglic aldehyde hydrolysis to produce tiglic acid, and the conversion rate of raw materials can reach 96%, so the aldehyde oxidase mutant has a good industrial application prospect.

The invention discloses a method for determining organic acids in main stream smoke of cigarettes, which is used for determining 16 organic acids in the main stream smoke of the cigarettes. The 16 organic acids are respectively crotonic acid, tiglic acid, trans-2-methyl-crotonic acid, levulinic acid, benzoic acid, furoic acid, lauric acid, tetradecanoic acid, cinnamic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, nonadecanoic acid, linolenic acid and arachidic acid; the method comprises the following steps: capturing flue gas, oscillating and extracting, preparing a standard solution, preparing a solution to be detected, qualitatively analyzing and quantitatively analyzing. By adopting the method, the 16 organic acids in the mainstream smoke of the cigarette can be accurately determined.

The invention belongs to the technical field of medicine synthesis, and relates to a preparation method of crotamiton, which comprises the following steps: adding N-ethyl o-toluidine, crotonic acid and an acylating chlorination reagent into a reaction container, reacting at room temperature, distilling after the reaction is finished, and collecting crotamiton fractions to obtain crotamiton, and no solvent is used in the reaction. According to the present invention, the one-pot crotamiton preparation process has advantages of simple operation, low cost, environmental protection, no pollution, and suitableness for industrial production, and the obtained crotamiton has characteristics of high yield and high purity.

The present invention relates to a preparation method of montelukast sodium intermediate, belonging to the field of pharmaceutical chemistry. In the present invention, crotonic acid is used as the starting material, and ethyl 3-butenoate is generated through esterification rearrangement reaction. The double bond of ethyl 3-butenoate undergoes epoxidation reaction with m-chloroperoxybenzoic acid to obtain an epoxy compound. The epoxy compound reacts with thiourea to obtain a cyclic sulfur compound. The cyclic sulfur compound undergoes ring opening with a cuprous salt reagent and cyclopropylmagnesium bromide, and finally, it is further hydrolyzed under alkaline conditions to obtain 1-mercaptomethylcyclopropylacetic acid. This method has cheap and easily available starting materials, reducing the material cost; in the reaction process, the use of highly toxic cyanide reagents or extremely explosive diazomethane is avoided, improving the production safety, and the technological process is simple and easy to implement; the number of reaction steps is reduced, the production cost can be greatly reduced, which is beneficial to industrial production.

The application provides a synthesis method and application of L-2-aminobutyric acid and L-2-aminobutyric acid amide hydrochloride, and belongs to the technical field of synthesis of chiral drug intermediates. The method for synthesizing L-2-aminobutyric acid by an enzyme method comprises the following steps: mixing raw materials, reacting, and separating to obtain L-2-aminobutyric acid, wherein the raw materials comprise crotonic acid, L-phenylalanine, a solvent and L-phenylalanine deaminase, and can further comprise an ammonium salt. The method has the advantages of cheap and easily available materials, high reaction selectivity, high atom utilization rate, high yield, good product quality and the like, and successfully solves the production problems of low material reaction selectivity, waste of isomer separation materials and high material cost in the traditional process.

The invention relates to a method for fixing a care and / or cosmetic product for a keratin material, such as the skin, comprising at least the following steps: 1) applying a first layer of a care and / or cosmetic composition (B) to the surface of the keratin material; 2) applying a second immobilizing layer to the thus-formed first layer by spraying with an aerosol device containing a composition (A) comprising, in particular in a physiologically acceptable medium: (a) at least one anionic immobilizing polymer of crotonic acid copolymer type; (b) at least one amphoteric fixed polymer selected from polymers comprising units derived from i) at least one monomer selected from acrylamide or methacrylamide substituted with an alkyl group on the nitrogen atom, ii) at least one acidic comonomer containing one or more reactive carboxyl groups, and iii) at least one basic comonomer; (c) at least one C2-C4 monohydric alcohol; (d) at least one plasticizer; and (e) at least one propellant.

The utility model provides a water diversion device for ethyl trifluorocrotonate production, and relates to the technical field of ethyl trifluorocrotonate production, the water diversion device comprises a water segregator main pipe, the outer side of the water segregator main pipe is provided with a supporting assembly, the supporting assembly comprises a limiting ring, a rotating cylinder, a mounting groove piece, a threaded cylinder, a threaded butt joint and a threaded rod, the limiting rings are symmetrically installed on the outer side of the water segregator main pipe, the rotating cylinder is movably installed on the outer side of the water segregator main pipe and located between the limiting rings, the installation groove piece is installed on one side of the rotating cylinder, and the threaded butt joint is installed at one end of the threaded cylinder. The threaded cylinder is connected with the mounting groove piece through a threaded butt joint and is mounted on one side of the rotating cylinder, and a threaded rod is mounted in the threaded cylinder in a threaded mode. According to the utility model, the threaded cylinder is connected with the rotating cylinder, so that the supporting component can support the water segregator, and the situation that the water segregator is unstable in connection with a reaction kettle and a condenser, so that the water segregator falls off during use and the use is influenced is prevented.

The present invention belongs to the field of polymer additives, and specifically relates to a bio-based lactic acid crotonate flame retardant plasticizer and its preparation method and application. The method of the present invention uses L-lactic acid, crotonic acid, diethylene glycol monobutyl ether, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide as raw materials, and through two-step esterification reaction and ring-opening reaction, a bio-based lactic acid crotonate flame retardant plasticizer is obtained. The bio-based lactic acid crotonate flame retardant plasticizer prepared by the present invention is characterized by being light yellow transparent in color, having moderate viscosity, good compatibility with polylactic acid, and compared with commercial plasticizers and tributyl acetylcitrate (ATBC), it has more excellent migration resistance, volatility resistance, transparency, plasticization performance, and at the same time can endow the polylactic acid material with excellent flame retardant performance. In addition, it is suitable for industrial production and is expected to replace traditional phthalate plasticizers.

The application belongs to the technical field of organic synthesis and particularly relates to a synthesis method of tert-butyl 4-triethoxysilyl butyrate. The synthesis method is that tiglic acid is reacted with sulfoxide chloride, then reacted with tert-butyl alcohol to obtain tert-butyl but-3-enoate, and finally, tert-butyl but-3-enoate is reacted with triethoxysilane with platinum dioxide as a catalyst to obtain tert-butyl 4-triethoxysilyl butyrate. The synthesis method is simple in operation, low in raw material price, low in catalyst consumption, high in yield and high in purity, and is suitable for industrial production.

The invention relates to the technical field of injection molding demolding master batches, in particular to a polyester transparent injection molding demolding master batch as well as a preparation method and application thereof. The catalyst comprises the following components in percentage by mass: 85-97% of a carrier and 3-15% of a lubricant, the lubricant is prepared from zinc crotonate, zinc cinnamate and octadecanol stearate according to the mass ratio of (2 to 6): (2 to 6): (1 to 4). And through the lubricant with a specific component ratio, the fluidity and demolding property of the polyester product are improved, and the haze is reduced.

This invention relates to a selenium-iron-copper composite catalyst material, its preparation method, and its applications in the field of materials chemistry. The catalyst uses ferric oxide as a matrix, with selenium powder, iron powder, and copper powder added as active components, and polyol and carboxylic acid as auxiliary agents. The process involves premixing, calcination, and pulverization. The selenium powder content is 1-7 wt% of ferric oxide, the iron powder content is 2-10 wt%, and the copper powder content is 0.5-1.5 wt%. The preferred polyol is glycerol, and the preferred carboxylic acid is crotonic acid. The calcination temperature is 400-800℃. In catalytic testing, under room temperature and air bubbling conditions, this catalyst can achieve a degradation rate of over 90% for tetracycline hydrochloride within one hour. This invention features a simple preparation method, low cost, high catalytic activity, mild operating conditions, and efficient degradation of tetracycline in water, making it suitable for antibiotic wastewater treatment.