268 results about "Nitrophenol" patented technology

The invention discloses a preparation method of antistatic modified chinlon filaments, and relates to the field of chinlon filaments. When the antistatic modified chinlon filament is prepared, (formylmethyl) diethyl phosphate and 1-aminopyrrole react to prepare pyrrole diethyl phosphate; reacting the hydroxylated multi-walled carbon nanotube with pyrrole diethyl phosphate to obtain a modified multi-walled carbon nanotube; the preparation method comprises the following steps: reacting 2, 2 '-bipyridine-5, 5'-dicarboxylic acid with 2-amino-5-nitrophenol, and then reducing to obtain a benzoxazole diamine monomer; then, adipic acid, 1, 5-diaminopentane and a benzoxazole diamine monomer are subjected to a reaction, and modified polyamide is prepared; uniformly mixing the modified polyamide, the modified multi-walled carbon nanotubes, pyrrole, ferric trichloride and copper chloride, and performing melt spinning to obtain the antistatic modified polyamide filament. The antistatic modified chinlon filament prepared by the invention has excellent antistatic, flame-retardant, anti-aging and mechanical properties.

The invention belongs to the technical field of analytical chemistry and pesticide residue detection, and relates to a phosphate hydrolysis nano-enzyme sensing array-based p-nitrophenol pesticide identification and detection method, which comprises the following steps of: performing five groups of parallel data matrixes on each type of p-nitrophenol pesticide to distinguish single / five types of p-nitrophenol pesticides with different concentrations; establishing a discrimination model of different concentrations / types of pesticides by using the data matrix, and obtaining an HCA map and an LDA score map of the p-nitrophenol pesticides through hierarchical clustering analysis and linear discriminant analysis; after the absorbance value of the sample to be detected is measured, the sample to be detected can be identified and detected through comparison. According to the present invention, by using the inherent dynamic difference existing during the catalytic hydrolysis of different p-nitrophenol pesticides by CeO2, a plurality of reaction time points are selected to measure the absorbance change, the time-resolved sensing array fingerprint is constructed, and the type identification and the concentration quantification of a variety of p-nitrophenol pesticides and the mixture thereof are achieved by combining the pattern identification algorithm, such that the sensitivity is high, and the detection result is accurate. The measurable concentration range is 1-50 mu g / mL.

The invention discloses a method for preparing nano-copper particles from eucommia ulmoides extract and application of the nano-copper particles in a catalytic reduction reaction in the technical field of metal nano-materials, the eucommia ulmoides extract is adopted as a reducing agent, a bivalent copper salt solution is added, a reaction can be carried out in a water phase, and the nano-copper particles are generated. The raw materials are cheap and easy to obtain, the reaction conditions are easy to control, the process is simple, and the prepared nano-copper particles have good dispersity and show a good catalytic effect in the aspect of catalytic reduction of organic dye and nitrophenol.

The invention discloses nearly-spherical silver powder formed by self-assembly of silver nanosheets and a preparation method and application of the nearly-spherical silver powder, and belongs to the technical field of micro-nano material preparation. The preparation method comprises the following steps: firstly, adding a dispersing agent solution into a silver precursor compound solution, stirring, then adding a morphology control agent solution, stirring, and finally adding a reducing agent solution for reaction; and after the reaction is completed, the prepared silver powder is washed and dried, and the nearly-spherical silver powder formed by self-assembly of the silver nanosheets is obtained. The nearly-spherical silver powder is formed through self-assembly of the silver nanosheets, the particle size range of the nearly-spherical silver powder is 0.5-2.0 m, the thickness range of the self-assembled silver nanosheets is 10-50 nm, the overall size is uniform, a large number of stacking faults exist on the surfaces of the silver nanosheets, and the silver nanosheets show an excellent catalytic effect in conversion of p-nitrophenol into p-aminophenol.

The invention belongs to the field of soil environment pollution simulation and prediction, and provides a prediction method based on a two-point chemical unbalanced model, which is used for quantitatively evaluating the effect of regulating and controlling the migration behavior of p-nitrophenol in acid red soil by straw stalk biochar. According to the method, a biochar-red soil composite medium system is constructed, a soil column leaching experiment is carried out to obtain penetration curve data, a two-point chemical unbalance model in CXTFIT software is utilized to carry out parameter inversion, and key parameters such as a retardation factor, a two-region distribution coefficient, a mass transfer coefficient and a liquid phase degradation coefficient are accurately identified. Model verification shows that the goodness of fit is high, and a parameter change rule reveals the inherent mechanism of enhancing the pollutant retention capacity, changing the proportion of fast and slow adsorption sites and influencing mass transfer kinetics by the biochar. Based on the verified model, the long-term migration behavior and pollution risk of p-nitrophenol under different environmental conditions can be simulated, and a scientific basis is provided for groundwater pollution control and remediation strategy optimization.

The invention belongs to a fluorescence analysis and detection method of p-nitrophenol, and particularly relates to a fluorescent carbon quantum dot probe for detecting p-nitrophenol as well as a preparation method and application of the fluorescent carbon quantum dot probe. The specific preparation method of the fluorescent carbon quantum dot probe comprises the following steps: taking aminopyrimidine as a precursor, mixing aminopyrimidine with water, and reacting at 160-200 DEG C to obtain the fluorescent carbon quantum dot probe with the surface rich in hydroxyl, amino and carboxyl groups. The fluorescent carbon quantum dot probe prepared by the invention has a strong fluorescent signal, selectively responds to p-nitrophenol, shows a wider linear detection range and high anti-interference capability, and is suitable for complex environmental pollutant detection.

The invention belongs to the field of biological medicine, and relates to a human serum albumin covalent binding type targeted folate receptor micromolecule drug conjugate prodrug and application thereof. The prodrug disclosed by the invention has a structure as shown in a formula I, six-carbon maleimide is used as a site combined with endogenous albumin, and albumin is used as a carrier to deliver the drug. The prodrug can increase accumulation of the drug in tumors under the EPR effect. A dipeptide chain composed of valine and alanine is used as a cleavage site of cathepsin B, an adapter composed of p-aminobenzyl ether and N-methylamino-4-nitrophenol releases drugs in an acidic environment, an azidohexanoic acid structure is added to a side chain of p-aminobenzyl ether, so that the site of a targeting ligand can be increased, and SN38 is used as a small molecule cytotoxic load. The micromolecular prodrug has dual functions of active targeting and passive targeting, and can effectively improve the concentration in solid tumors, reduce toxic and side effects and improve the anti-tumor effect under the mediation of related receptors.

The invention relates to a ternary carbon aerogel for efficiently removing 4-nitrophenol and a preparation method thereof, the method comprises the following steps: dispersing FFPBA nanoparticles into deionized water, adding agarose, and stirring in a water bath until the FFPBA nanoparticles and the agarose are uniformly mixed; freezing the obtained mixed solution, and treating the mixed solution by using a freeze dryer under a vacuum condition to obtain FFPBA / AG aerogel; then carrying out pyrolysis in a nitrogen atmosphere, so as to obtain FFPBA / AG-CA carbon aerogel; and finally, soaking the FFPBA / AG-CA carbon aerogel into a cerous nitrate solution, and performing pyrolysis under the condition of 60 DEG C until the liquid is completely volatilized in a nitrogen atmosphere to obtain the FFPBA-C / AG-CA-Ce carbon aerogel material. The carbon aerogel has good mechanical strength, has excellent catalytic activity on degradation of 4-nitrophenol by potassium hydrogen persulfate, is easy to recover, and does not cause secondary pollution to the environment.

The invention relates to a diyne functionalized covalent organic framework material as well as a preparation method and application thereof, and the diyne functionalized covalent organic framework material is synthesized by taking 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetraphenylamine and 5, 5 '-(butyl-1, 3-diyne-1, 4-diyl) diisophthalaldehyde as construction units and adopting a Schiff base reaction. The dialkynyl functionalized covalent organic framework material disclosed by the invention has good chemical stability and can be used as a carrier to controllably grow silver nanoparticles through metal coordination to obtain a composite material, and the composite material shows excellent catalytic activity and cycling stability in a 4-nitrophenol reduction reaction catalyzed by sodium borohydride; therefore, the method has important application potential in the fields of environmental restoration, green chemistry and the like.

The application discloses a misaligned ten-membered cucurbituril-based assembly and application thereof in detecting and removing trinitrophenol. The assembly is assembled by using misaligned ten-membered cucurbituril and 8-hydroxyquinoline as raw materials. The misaligned ten-membered cucurbituril-based assembly is a novel supramolecular assembly, can be used for fluorescent identification of trinitrophenol in an aqueous solution, and has the characteristics of simple detection instrument, high selectivity, good sensitivity, wide detection range, fast response time, and the like. In addition, the misaligned ten-membered cucurbituril-based assembly has the characteristic of being capable of removing trinitrophenol in the aqueous solution.

The invention discloses a process for continuously separating tar from p-nitrophenol, and relates to the technical field of p-nitrophenol, which comprises the following steps: adding nitrobenzene and a sodium hydroxide solution into a microwave reactor in proportion, hydrolyzing at a certain temperature and pressure under the assistance of ultrasonic waves, and filtering to obtain a filtrate; performing counter-current extraction on the obtained hydrolysate through an alkaline water phase, a polar organic solvent phase and an ionic liquid phase in sequence, then performing rotary evaporation under the conditions that the vacuum degree is (-0.08)-(-0.095) MPa and the temperature is 50-70 DEG C, and collecting fractions; the temperature of the upper section of the spiral packing layer is 40-50 DEG C, the temperature of the middle section of the spiral packing layer is 60-70 DEG C, the temperature of the lower section of the spiral packing layer is 80-90 DEG C, and finally high-purity p-nitrophenol is obtained. In the process, the conversion rate of nitrobenzene is higher, and the prepared p-nitrophenol has higher purity.

This invention relates to a method for preparing and applying polyamides from a monomer containing 7-methyldibenzo[c,g]carbazole and triphenylamine: 4-({9-[(4-aminophenyl)(4-methoxyphenyl)amino]-7-methyldibenzo[c,g]carbazole-5-yl}(4-methoxyphenyl)amino)aniline. To address the problems of low solubility, difficulty in film formation, poor cycling stability, narrow color change range, and limited functionality in polyamide materials, this invention constructs two triphenylamine groups on 7-methyldibenzo[c,g]carbazole and introduces a methoxy group onto the triphenylamine to increase the polymer's solubility and stability. The polymer of this invention exhibits excellent electrochromic properties, including excellent cycling stability, fast switching time, and high optical contrast. Furthermore, to address the material's multifunctionality, a naphthalene unit is added to the molecular structure, resulting in a polymer with fluorescent emission. This invention can be applied to displays, rearview mirrors, camouflage applications, and the fluorescence detection of p-trinitrophenol.

The invention discloses a synthesis method of 5-nitro-2-aminophenol, which comprises the following steps: by using 2-chloro-4-nitroaniline as a raw material, providing an amino protecting group by using di-tert-butyl dicarbonate ester to obtain a compound 3; carrying out hydrolysis reaction in an alkaline environment to hydrolyze chlorine groups on benzene rings into hydroxyl groups to obtain a compound 4; and removing an amino protecting group under an acidic condition to obtain the 5-nitro-2-aminophenol. According to the method, 2-chloro-4-nitroaniline is used as a starting raw material, compared with expensive ortho-aminophenol, the cost of the raw material can be remarkably reduced, use of expensive catalysts in the hydrolysis process is avoided through amino protection, generation of the byproduct 2-amino-4-nitrophenol is effectively reduced, and the yield of the 2-chloro-4-nitrophenol is increased. And the synthesized 5-nitro-2-aminophenol has relatively high purity (99.5%) and relatively high yield (-86%). The method has the advantages of conventional production steps and conventional process equipment, and has a good application prospect.

The invention discloses an application of a copper nano-cluster with stable ascorbic acid in detection of p-nitrophenol, the copper nano-cluster with stable ascorbic acid is used as a fluorescent probe, and the detection of p-nitrophenol is realized through a fluorescent sensing method. Due to the quenching effect of p-NP, the fluorescence intensity of the system is obviously reduced in the presence of p-NP. The p-NP concentration can be quantitatively detected by comparing the fluorescence intensity of the copper nano-cluster and the fluorescence intensity of a quenching system. The method is simple, sensitive and high in selectivity, does not need complex fluorescent dye labeling, shows remarkable potential for p-NP detection, and has a good application prospect in the aspects of food, medicine and the like.

This invention provides compounds and methods of application that possess both broad-spectrum antifungal activity and plant-induced resistance, belonging to the field of agricultural technology. It addresses the problem that "traditional pure immune inducers must be applied before disease onset, making it difficult to meet the full-cycle control needs of disease prevention and treatment in the field." Compared to the previously developed PC1 and PC20, the two compounds of this invention, 2,4-dibromo-6-nitrophenol and 7-deazon-2'-deoxy-7-iodoadenosine, can both inhibit the growth of rice blast fungus and significantly improve rice resistance to rice blast through foliar spraying, meeting the full-cycle control needs of disease prevention and treatment in the field. Furthermore, these two compounds can directly inhibit the growth of various fungal pathogens such as peanut white mold, tomato gray mold, wheat scab, rice bakanae disease, rice false smut, mango malformation, and banana wilt.

The application discloses a kind of cultivation methods of konjak, belong to konjak planting technical field, the present application is to the pretreatment konjak seed potato of sterilization in nitrogen and ozone mixed atmosphere steam treatment, not only strengthen the growth potential of konjak seed potato, and fully activated the catalase in seed potato, create excellent intracellular environment for promoting subsequent seed potato germination, heat shock seed potato is soaked in activation liquid and activated, brassinolide, calcium sulfate, ethiofencarb and sodium complex nitrophenol in activation liquid activate the cytokinin oxidase in cell, and then regulate seed potato germination speed and germination quality, effectively solve the problem of low seedling rate of offspring konjak and yield decline.The activation seed potato is sowed in nutrient soil, effectively improves the content of nutrient substance in harvested konjak.

A dyeing composition for keratin fibers, including one or more first direct dyes selected from HC Blue 18, HC Red 18, HC Yellow 16, and salts thereof, one or more second direct dyes selected from Disperse Black 9, Acid Yellow 1, 2-amino-6-chloro-4-nitrophenol and salts thereof, and one or more alkalizing agents.

This invention provides a method for screening β-galactosidase inhibitors, belonging to the field of pharmaceutical technology. The first step of this method uses fluorescence sensing technology to rapidly identify natural products with β-Gal inhibitory activity. The principle is based on the fluorescence quenching property of p-nitrophenol (PNP) on sulfur quantum dots (SQDs); β-Gal catalyzes the hydrolysis of p-nitrophenyl-β-D-galactopyranoside (PNPG) to generate the specific product PNP; in the presence of β-Gal, PNPG can be enzymatically catalyzed to generate PNP, quenching the fluorescence of SQDs; when screened for β-Gal inhibitory activity, the fluorescence of SQDs can be restored. The second step uses affinity chromatography to capture components in samples with β-Gal inhibitory activity. This method involves immobilizing β-Gal on a support material, eluting with a solvent to obtain components that can bind to β-Gal, and then using liquid chromatography-mass spectrometry (LC-MS) to identify the components. This method can rapidly and accurately screen β-Gal inhibitors from natural products.

The invention discloses an aluminum alloy material easy to oxidize and color and a preparation method thereof.The aluminum alloy material is prepared from, by weight, 20-25 parts of aluminum alloy powder, 5-10 parts of graphene, 4-6 parts of p-nitrophenol, 0.5-1 part of concentrated bromine water and 4-7 parts of magnesium powder. And graphene treatment, aluminum alloy and graphene dispersion treatment, drying, water washing and vacuum hot pressing are carried out. Graphene is doped with the aluminum alloy, the comprehensive performance of the aluminum alloy can be remarkably improved, the hardness can be improved, the electrical conductivity and the thermal conductivity can be remarkably improved, halogen elements are introduced, the activity of the aluminum alloy is improved, the oxidized capacity is improved, the coloring efficiency is improved, and the flame retardant property is improved; and the magnesium powder is added, so that the stability of the system is protected, and the hardness of the system is improved.

The invention belongs to the technical field of membrane catalysis, and relates to a method for reducing the Co particle size of a multi-channel Co / CM catalytic membrane. And coating the surface of the Co / CM catalytic membrane with a polydopamine coating, and then drying and calcining the Co / CM catalytic membrane. According to the method for reducing the particle size of Co in the Co / CM catalytic membrane, the particle size of Co can be effectively reduced, so that the active component Co in the catalytic membrane is re-dispersed, and the activity of the catalytic membrane in a p-nitrophenol catalytic hydrogenation reaction is obviously improved.

The invention discloses a water-based photoresponse type rosin-based aggregation-induced emission amphiphilic molecule as well as a preparation method and application thereof. The molecular structural formula of the water-based light response type rosin-based AIE amphiphilic molecule is shown in the specification, or n ranges from 15 to 30. According to the water-based light-responsive rosin-based AIE amphiphilic molecule, a tetraphenyl ethylene or cyanostilbene fluorophore is introduced into the anhydride part of maleopimaric acid through an imidization reaction, and groups such as sodium carboxylate, amino acid sodium or polyethylene glycol are introduced into the carboxylic acid position to prepare the water-based light-responsive rosin-based AIE amphiphilic molecule. The solid of the molecule has blue fluorescence emission, and can be used for dyes or solid anti-counterfeiting materials. A photoresponsive AIE aqueous solution is prepared by using the amphiphilic molecule alone or compounding the amphiphilic molecule with dodecyl polyoxyethylene ether, and the photoresponsive AIE aqueous solution can be used for water-based anti-counterfeiting ink, cell imaging or 4-nitrophenol detection and the like.

The application discloses a copper oxide nanowire loaded silver monatomic catalyst, a preparation method and application thereof, and comprises a substrate, CuO nanowires and metal Ag monatomic atoms loaded on a CuO nanowire electrode layer; the substrate is a commercial copper foam, and the substrate is used for providing a copper source and preparing an array material of the metal Ag monatomic atoms on the CuO nanowires. The application adopts the above-mentioned copper oxide nanowire loaded silver monatomic catalyst, the preparation method and the application thereof, through silver monatomic atom modification, copper-silver metal interaction jointly regulates an intermediate product in an adsorption electrocatalytic reduction process, excellent electrocatalytic nitrophenol reduction performance is obtained, and the application is suitable for environmental pollution treatment and pharmaceutical synthesis development fields.

The invention discloses a colorimetric detection method for cMyBP-C protein based on nano-enzyme activity, preparation of a bismuth selenide / nano-gold composite material and application of the bismuth selenide / nano-gold composite material in protein detection. The method comprises the following steps: performing ultrasonic stripping on a bismuth selenide block to obtain a few-layer bismuth selenide dispersion liquid; and then sequentially adding a sodium borohydride aqueous solution and a chloroauric acid aqueous solution under a stirring condition, and carrying out in-situ reduction to form gold nanoparticles loaded on the surface of bismuth selenide. The composite material has the capability of catalyzing reduction of p-nitrophenol into p-aminophenol, and the color of the solution is changed from yellow to colorless. After the cMyBP-C antibody is modified on the surface of the composite material, the catalytic activity is inhibited; after a to-be-detected sample is added, the antibody and the protein are specifically combined to cause dissociation, and the catalytic activity is recovered. The cMyBP-C protein is quantitatively detected by observing the color change of the solution or monitoring the reduction of the ultraviolet absorbance at 400 nm.

The invention discloses a carboxyl-terminated hyperbranched magnetic silver-based catalyst as well as a preparation method and application thereof, and relates to the technical field of wastewater treatment. Comprising the following steps: preparing magnetic Fe3O4 nanoparticles MNP by adopting a coprecipitation method; the preparation method comprises the following steps: sequentially coating the surface of MNP with SiO2 and gamma-aminopropyltrimethoxysilane, and synthesizing an aminated magnetic nanoparticle FSN; the preparation method comprises the following steps: carrying out blending reaction on FSN and a carboxyl-terminated hyperbranched polymer solution, washing, separating a product by a magnet, and drying to obtain carboxyl-terminated hyperbranched magnetic silicon shell particles FSNC; fSNC is dissolved in a silver nitrate solution for reaction, then sodium borohydride is added for continuous reaction, washing, product separation by a magnet and drying are performed, and the carboxyl-terminated hyperbranched magnetic silver-based catalyst Ag / FSNC is obtained. The carboxyl-terminated hyperbranched magnetic silver-based catalyst provided by the invention can effectively catalyze reduction of p-nitrophenol into p-aminophenol, has good magnetic responsiveness, is convenient for recovery and reuse of the catalyst, can continue a catalytic experiment without treatment, and realizes stable recycling of the catalyst.

The invention relates to the technical field of gas impurity removal, and discloses a metal modified molecular sieve as well as a preparation method and application thereof. The method comprises the following steps: (1) mixing a metal salt, a nitrogen-containing micromolecule complexing agent, a nitrogen-containing micromolecule dispersing aid and ethanol to obtain a mixed solution, and then adding a molecular sieve for mixing to obtain a mixture; (2) drying the mixture obtained in the step (1), and then roasting; wherein the metal in the metal salt is selected from at least one of Mg, Ca, Sr and Ba; the nitrogen-containing micromolecule complexing agent is selected from at least one of 2-nitrophenol, 3-nitrophenol and 4-nitrophenol. The metal modified molecular sieve prepared by the method has very high adsorption activity on nitrous oxide, oxygen-enriched liquid air containing nitrous oxide is treated, the content of nitrous oxide can be reduced to 5 ppm or below, and the whole process is low in energy consumption, does not generate new impurities, and is green and environment-friendly.

The present invention provides a bimetallic ZIFs-supported nanocatalyst, a preparation method, and an application thereof. The bimetallic ZIFs-supported nanocatalyst of the present invention comprises a Zn-Cu bimetallic ZIFs material and metal Cu(0) supported on the Zn-Cu bimetallic ZIFs material. The preparation method of the catalyst of the present invention comprises: contacting a dispersion of the Zn-Cu bimetallic ZIFs material with a reducing agent to obtain the bimetallic ZIFs-supported nanocatalyst. The catalyst of the present invention exhibits high catalytic activity and stability in the catalytic degradation of p-nitrophenol.

The invention relates to application of fluorescent ionic liquid in detection of nitrophenol isomers and a method, the fluorescent ionic liquid is (poly) 1, 3-bis (N-methylimidazolyl) propane 1, 4-naphthalic acid salt, and the structure of the compound is as shown in the following formula: # imgabs0 #. The preparation method comprises the following steps: firstly, sequentially adding 30mL of NaOH solution (3mol / L) and 9.47 g of 1, 4-naphthalic acid into a single-mouth bottle, carrying out reflux reaction at 30 DEG C for 24 hours, filtering, washing, and drying to obtain the fluorescent ionic liquid. The brown clear solution is the 1, 4-sodium naphthalate solution. Secondly, 1, 3-dibromopropane (8mL), N-methylimidazole (12mL) and acetone (50mL) are sequentially added into the three-neck flask; stirring and refluxing at 45 DEG C for 20 hours, washing with acetone for three times, 50mL each time, and carrying out suction filtration to obtain white solid powder; and finally, sequentially adding the prepared sodium 1, 4-naphthalate solution and 8.3 g of the white solid product obtained in the step 2 into a single-mouth flask, and stirring and reacting at 50 DEG C for 24 hours. And carrying out rotary evaporation, drying, absolute ethyl alcohol dilution, suction filtration and drying on the prepared solution to obtain the target product (poly) 1, 3-bis (N-methylimidazolyl) propane 1, 4-naphthalic acid salt. The method is simple and convenient to operate, has relatively high fluorescence intensity and sensitivity, and can be used for fluorescence analysis and analysis and identification of nitrophenol isomers.

The invention discloses a polyelectrolyte multilayer film loaded gold-palladium bimetallic nanoparticle catalyst, which is characterized in that cationic polyelectrolyte poly (diallyldimethylammonium chloride) PDDA and anionic polyelectrolyte sodium polystyrenesulfonate (PSS) are used as construction materials, a layer-by-layer self-assembly technology is adopted to prepare a polyelectrolyte multilayer film, and the polyelectrolyte multilayer film is marked as (PDDA / PSS) n + 0.5, and firstly loading gold nanoparticles on the multilayer film through an ion exchange-in-situ reduction method, and then loading palladium nanoparticles on the multilayer film to obtain the catalyst (PDDA / PSS) (n + 0.5 / a) AubPd for catalyzing the degradation of p-nitrophenol. According to the polyelectrolyte multilayer film loaded gold-palladium bimetallic nanoparticle catalyst disclosed by the invention, by selecting and designing the material and the layer number of the multilayer film carrier and the proportion of gold and palladium bimetallic, the synergistic catalysis of the polyelectrolyte film and the gold-palladium bimetallic nanoparticles is exerted; the catalytic efficiency and the degradation effect of the catalyst in the p-nitrophenol degradation process are obviously improved.

The preparation method comprises the following steps: dissolving sodium alginate and carbon black in water, adding polyacrylic acid, and carrying out a stirring reaction so as to obtain a mixture; then adding a CN precursor while heating and stirring, heating to a gel state, and roasting at high temperature to obtain a carbon nitride composite material; dispersing the composite material into water, adding a cobalt chloride solution, carrying out ultrasonic treatment, and adjusting the pH value to 10-11 to obtain a mixture; and adding a NaBH4 solution, reducing to obtain nano particles, filtering, washing and drying to obtain the catalyst. According to the preparation method, the carbon nitride composite carrier with high specific surface area is prepared firstly, then the active component is loaded, and the photocatalytic degradation effect of p-nitrophenol is improved through the synergistic effect of the composite carrier and the active component.

The application provides a polypeptide vaccine delivery carrier, which is a phenylalanine-based polyester amide polymer prepared from triethylamine, p-nitrophenol, L-phenylalanine and butanediol. + The polypeptide vaccine has good stability, high antigen presentation effect, and can induce the body to produce effective antitumor CD8 T cell immune response, inhibit tumor growth and metastasis, and improve the effect of immunotherapy.