269 results about "Isocyanuric acid" patented technology

The invention relates to a composite nanodot loaded porous carbon nitride photocatalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: calcining a precursor formed by mixing melamine, cyanuric acid and trithiocyanuric acid to obtain porous carbon nitride, and loading cobalt oxide nanodots and nickel nanodots on the porous carbon nitride in two steps, the composite nanodot loaded porous carbon nitride photocatalyst with excellent visible light catalytic hydrogen production performance is obtained; when the composite nanodot loaded porous carbon nitride photocatalyst obtained by the method is used for photocatalytic hydrogen production, an activity test result shows that the activity of the photocatalyst prepared by the method is improved by 222.5 times compared with that before modification; the preparation method disclosed by the invention has the advantages of high reaction efficiency and good performance of the obtained photocatalyst, and has a wide application prospect.

The invention discloses a preparation method and application of an iron carbide nanoparticle modified carbon-based Fe monatomic catalyst, in the preparation process, Fe < 3 + > is complexed with oxalic acid in advance to realize coordination self-assembly and effectively inhibit hydrolysis of Fe < 3 + >, and glucose is used as a carbon-based carrier precursor and a reducing agent to prepare a carbon-based Fe monatomic catalyst. According to the preparation method, the self-assembled iron species are converted into Fe3C nanoparticles at a high temperature, melamine and cyanuric acid are used as N sources to realize N-doped carbon and anchor part of the iron species to form Fe monatomic atoms, and in addition, oxalic acid, melamine and cyanuric acid are easy to decompose at the high temperature to generate small-molecule gas, so that glucose forms a porous carbon structure during high-temperature carbonization, and the porous carbon structure is formed. Finally, Fe3C and Fe monatomic synergistic coexistence hierarchical porous N-doped composite carbon-based catalyst is achieved, the obtained catalyst can efficiently activate peracetic acid and degrade phenol organic pollutants, and the catalyst is simple in preparation process, good in catalytic effect and high in stability and has wide application potential.

The invention belongs to the technical field of flame-retardant master batches, and particularly relates to a flame-retardant master batch for polypropylene and a preparation method thereof.The preparation method comprises the steps that tris (2-hydroxyethyl) isocyanurate is heated and molten, tetrabutyl titanate and DOPO-DPP are added into the molten tris (2-hydroxyethyl) isocyanurate, the mixture reacts for 3-4 h, melamine and cyanuric acid are added into the molten tris (2-hydroxyethyl) isocyanurate, the mixture reacts for 30 min, cooling and smashing are conducted, and a macromolecular flame retardant TDMC is obtained; the preparation method comprises the following steps: carrying out ester exchange reaction on 2, 4-diphenyl-6-[2-hydroxy-4-(ethoxycarbonyl methoxy) phenyl]-1, 3, 5-triazine and 2, 2, 6, 6-tetramethyl piperidinol to prepare a free radical capturing agent; the polypropylene, the TDMC, the free radical scavenger and the zeolite are put into a high-speed mixer to be stirred and mixed, and then extrusion granulation is performed. The macromolecular flame retardant TDMC is adopted, the molecular weight of the macromolecular flame retardant TDMC is large, the water resistance is good, and the compatibility and damp-heat stability of the flame-retardant master batch in polypropylene are improved.

The invention belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on a methyl red azo dye adsorbent, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a first precursor solution and a second precursor solution; the first precursor solution contains melamine, and the second precursor solution contains cyanuric acid and / or barbituric acid; (2) sequentially adding the first precursor solution and the second precursor solution into biomass carbon powder to form a reaction solution; enabling the supermolecule aggregate to grow in situ and coat the surface of the biomass carbon powder under a stirring condition to form a solid-liquid mixture; removing the solvent in the solid-liquid mixture, and drying to obtain a supramolecular composite precursor; (3) carrying out pressure molding on a mixture of the supramolecular composite precursor, silicate clay mineral and nickel salt to obtain a green body; and (4) carrying out heat treatment on the green body to obtain the methyl red azo dye adsorbent.

The application discloses oligomerization degree carbon nitride nanosheet containing partial supramolecular chains and a preparation method and application of photocatalytic decomposition of water to simultaneously produce hydrogen and oxygen, and the preparation method comprises the following steps: adding melamine and cyanuric acid into a solvent, stirring after ultrasonic treatment, and drying to obtain supramolecular precursor powder; and calcining the supramolecular precursor powder to obtain oligomerization degree carbon nitride containing partial supramolecular chains. The application retains partial supramolecular oxygen-containing structures to optimize adsorption and dissociation of oligomerization degree carbon nitride nanosheet and water molecules at a reaction liquid interface, realizes high H and OH enrichment of a local environment, and promotes performance improvement of photocatalytic complete decomposition of water.

The application relates to a preparation method and application of a hard carbon negative electrode material, and comprises the following steps: 1) dissolving an epoxy resin derivative and an amine catalyst in an organic solvent to obtain a mixture, ultrasonically dispersing alkali-activated biomass powder in the mixture, and performing reaction by increasing temperature to obtain modified biomass powder; the epoxy resin derivative comprises phenolic epoxy resin and isocyanuric acid triglycidyl ester; 2) carbonizing the modified biomass powder. The reaction in step 1) is used for reinforcing the easily-oxidized and weakly-connected structure on the alkali-activated biomass powder, so that the modified biomass powder with enhanced crosslinking degree and a complex three-dimensional crosslinking structure is obtained; and the modified biomass powder is carbonized in step 2). The hard carbon negative electrode material obtained by the method makes the battery have excellent cycle stability.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The invention discloses a phosphorus-nitrogen-containing polymer coated high-nickel ternary positive electrode material and a preparation method thereof, and the method comprises the following steps: mixing a high-nickel ternary positive electrode material, dimethoxyphosphoryl methacrylate, isocyanuric acid tris (2-acryloyloxyethyl) ester, a free radical initiator and an organic solvent, and reacting while stirring under certain reaction conditions; after the reaction is completed, filtering to obtain a filter cake, washing twice with an organic solvent, and collecting a product; and drying the product in a vacuum drying oven until the quality is unchanged to obtain a final product. The coating amount of the phosphorus-nitrogen-containing polymer is less than or equal to 1.05%. Flame-retardant phosphorus and nitrogen elements are introduced into a coating layer of the prepared positive electrode material, so that the positive electrode material can be protected to slow down thermal decomposition, the positive electrode material and an electrolyte are isolated, and oxygen released by decomposition of the positive electrode material is inhibited from reacting with the electrolyte to release heat.

The application discloses a kind of low-noise water disaster resistant asphalt mixture and preparation method thereof, it is related to bitumen technical field.The mixture is composed of modified basalt porous ceramic hybrid aggregate and self-repairing gel modified asphalt material composite;Among them, modified basalt porous ceramic hybrid aggregate is crushed after basalt ore, by the synergistic effect of foaming agent, cosolvent, in the vacuum gradient sintering, carbon dioxide is inhaled to optimize pore structure, then by pickling, plasma activation and polyurethane impregnation strengthen mixed aggregate and filler are prepared;Self-repairing gel modified asphalt is three (2-mercaptoethyl) cyanuric acid ester as precursor, by thiol-epoxy click chemistry reaction to form crosslinked gel network, then with matrix asphalt composite;The scheme is through the acoustic wave dissipation of porous ceramic, hydrophobic interface and the dynamic self-repairing synergistic effect of gel network, significantly improve the water disaster resistance and noise reduction performance of mixture.

The utility model relates to tail gas purification technical field especially is a cyanuric acid synthetic reaction tail gas purification device, including the box, be provided with filter equipment on the box and be used for tail gas filtration, filter equipment includes: installation component, including the frame fixed in the inside of box, the front of upper and lower both ends of frame all is seted up and is inserted to install the composite catalytic filter core in the inside of frame, fixed component, including the fixed frame of installation in the inside front of frame, the inside intermediate rotation of fixed frame is installed with gear, the both ends of fixed frame inside left and right are all fixed with guide rod, the sliding installation of sleeve of guide rod is equipped with rack, the fixed plug rod is equipped with on the rack, the other end of plug rod is fixed with the bolt and is matched with the jack, the spring of sleeve installation is equipped with on guide rod, the front end fixed of gear has the knob, through fixed component and fix the composite catalytic filter core in installation component, significantly shorten the composite catalytic filter core replacement time, improve equipment operation efficiency.

The application discloses a kind of iron monatomic catalysts with controllable sulfur content and coordination mode and its preparation method and application, nitrogen-allyl thiourea and thiocyanic acid are respectively used as sulfur-containing organic ligand and sulfur-containing supramolecular precursor, chelate with iron ion, and use the hydrogen bond interaction between melamine and cyanuric acid, complete supramolecular self-assembly process;And high-temperature pyrolysis is carried out under argon atmosphere, and iron monatomic catalysts with controllable sulfur content and coordination mode can be prepared.The application also includes the application of iron monatomic catalysts with controllable sulfur content and coordination mode in removing organic pollutants such as p-chlorophenol and antibiotics in water.Iron monatomic catalysts with controllable sulfur content and coordination mode can improve the activation efficiency of persulfate, the content and selectivity of active oxygen species generated, and achieve efficient degradation of p-chlorophenol under different anion-cation, humic acid and pH conditions, while having good recycling performance.

The invention provides a preparation method of a melamine cyanuric acid coated phosphorus flame retardant and application of the flame retardant in flame-retardant waterborne polyurethane artificial leather. According to the preparation method, melamine cyanuric acid is coated on the surface of phosphorus flame retardant powder in an in-situ polymerization manner, and an ethanol-free solvent is used as a reaction medium in the reaction process, so that the preparation method has the advantages of environment friendliness, safety and high yield and conversion rate; and the phosphorus-based flame retardant coated with the melamine cyanuric acid has a synergistic effect on the flame retardant property.

The invention provides a low-platinum catalyst, a preparation method and application of the low-platinum catalyst in water electrolysis hydrogen production. Dispersing melamine and cyanuric acid in a certain proportion in absolute ethyl alcohol, adding the transition metal precursor solution, continuously stirring, heating, continuously reacting, cleaning, filtering, drying and grinding to obtain first solid powder; the first solid powder is placed in inert gas for carbonization treatment, and second solid powder is obtained; and dispersing the second solid powder in deionized water dissolved with a noble metal precursor, stirring for reaction, cleaning, filtering and drying to obtain the low-platinum catalyst. And the content of Pt in the catalyst is 0.1-10 wt%. The prepared low-platinum catalyst has excellent hydrogen evolution performance, the usage amount of precious metal can be effectively reduced, and the utilization efficiency of the precious metal is improved; the preparation method is simple in preparation procedure and relatively low in cost, can realize batch preparation, and has excellent market value and economic value.

The invention discloses an electronic-grade cyanate ester prepolymer as well as a preparation method and application thereof. The preparation method comprises the following steps: in a protective atmosphere, melting a cyanate ester monomer at 140-160 DEG C, adding a catalyst, continuously stirring and reacting for 6-10 hours, cooling to 110-120 DEG C, or cooling to 60-75 DEG C, and adding a low-boiling-point solvent to prepare an electronic-grade cyanate ester prepolymer; wherein the catalyst comprises polyhydroxy alkyl melamine and / or polyhydroxy alkyl cyanuric acid. The cyanate ester prepolymer with excellent performance can be prepared under mild conditions, and the cyanate ester prepolymer has wide application prospects in the fields of electronic packaging substrates, copper-clad plates and aerospace.

The application relates to the field of resin coatings, and particularly discloses a coating containing a resin composition and a preparation method and application thereof. The coating containing the resin composition is prepared from raw materials including a resin composition, a curing agent and an auxiliary material mixture, and the resin composition, the curing agent and the auxiliary material mixture are used in a weight ratio of 100:30-50:50-150 of the resin composition, the curing agent and the auxiliary material mixture; wherein the resin composition is composed of isocyanuric acid triglycidyl ester, bisphenol F type ring sulfur resin and tetraglycidyl amine type epoxy resin. The preparation method is that the auxiliary material mixture is added into the resin composition and the curing agent in a certain proportion respectively, mixed uniformly and then mixed, and finally the coating containing the resin composition is obtained. The coating has good bonding strength, good high-temperature resistance, acid corrosion resistance, rapid cooling resistance and rapid heating resistance, and the surface drying time meets the construction requirement, and the coating can be applied in a wet desulfurization chimney inner wall coating.

The application discloses a kind of SBS modified asphalt based on TAIC-MMA copolymer regeneration and preparation method thereof, belong to road engineering material field, include: S1: after aging asphalt is preheated at 135 ℃, under the first shear condition, incorporate ESO, continue 10-15min to induce nucleophilic ring-opening reaction of epoxy group in ESO and carbonyl in aging asphalt;S2: continue to incorporate TAIC / MMA mixture under the second shear condition, after stirring at 135 ℃ for 20 minutes, initiator BPO is added, continue to stir to make the free radical produced by decomposition of BPO initiate in-situ copolymerization and dynamic crosslinking reaction of TAIC and MMA;S3: the mixture obtained in S2 is carried out heat swelling at 70 ℃, namely obtained.The application uses ESO as colloidal stabilizer, uses triallyl isocyanurate as the crosslinking agent of SBS network structure reconstruction, uses the ester group side chain in MMA to enhance the interfacial compatibility with asphalt matrix by steric hindrance effect, by molecular level synergistic effect, finally realize the comprehensive promotion of aging asphalt cement rheological property, durability and mechanical property.

The invention relates to the field of coatings, and discloses a high-temperature-resistant protective coating for an alloy surface and a preparation method of the high-temperature-resistant protective coating. The protective coating is prepared from waterborne epoxy resin, high-temperature-resistant filler, cardanol-based modified benzoxazine resin, a hyperbranched modifier, a curing agent and auxiliaries; according to the cardanol-based modified benzoxazine resin, paraformaldehyde is utilized to introduce an aldehyde group into a hydrogenated cardanol matrix to prepare a cardanol-based aldehyde-containing intermediate, then the cardanol-based aldehyde-containing intermediate reacts with 1, 5-naphthalene diamine, and then the cardanol-based aldehyde-containing intermediate reacts with gamma-aminopropyltriethoxysilane and paraformaldehyde through Mannich reaction to prepare the cardanol-based modified benzoxazine resin. The hyperbranched modifier is prepared by carrying out addition on 2, 4-dihydroxybenzophenone and isocyanatopropyltriethoxysilane, initiating hydrolytic condensation by utilizing a sol-gel method and then introducing triglycidyl isocyanurate to carry out a ring-opening reaction, and the protective coating prepared by the preparation method is strong in adhesive force, high in mechanical strength, good in wear resistance, good in wear resistance, good in wear resistance and good in wear resistance. Meanwhile, good corrosion resistance, high temperature resistance, ultraviolet aging resistance and flame retardance are achieved.

The invention relates to a flame retardant for polyester fibers and a preparation method thereof, and relates to the technical field of flame retardant synthesizing.The preparation method comprises the following steps that pre-dispersion and activation are conducted, specifically, water and melamine are added into a reaction kettle, stirring is conducted to obtain a uniform suspension, and then a water-soluble polymer is added into the suspension; complex reaction: slowly heating and stirring; regulating and controlling coprecipitation and crystallization: slowly adding cyanuric acid into the reaction kettle, and then heating and stirring for reaction to obtain slurry; after the reaction is finished, cooling the slurry, adding a wetting dispersant, stirring, conveying to a centrifugal spray dryer for drying, and collecting to obtain the flame retardant. The flame retardant for the polyester fiber, prepared by the preparation method disclosed by the invention, has the advantages of relatively small particle size, excellent dispersity, efficient flame retardance, high thermal stability and excellent processability.

The invention discloses a glass fiber reinforced polypropylene material as well as a preparation method and application thereof. The glass fiber reinforced polypropylene material comprises the following components: 58-92 parts of polypropylene, 8-42 parts of modified glass fiber, 1-5 parts of a compatilizer, 0.1-2 parts of an antioxidant and 0.04-0.12 part of a small molecular weak acid compound, the antioxidant is a hindered phenol compound with an isocyanuric acid ring skeleton; the pH value of the modified glass fiber is less than or equal to 8.5; the acidity coefficient PKa value of the small molecule weak acid compound is greater than or equal to 3. The low-pH-value modified glass fiber and the specific main antioxidant are adopted, meanwhile, the weak acid of the small-molecule weak acid compound is adopted for adjusting the pH value of the system, and the anti-yellowing performance and the welding strength of the material after high-temperature processing and long-term thermo-oxidative aging are obviously improved.

The invention discloses a preparation method of a biomimetic dental component of biocompatible multi-scale filler resin, and belongs to the technical field of dental biomaterials.The preparation method comprises the steps that S1, silver-loaded mesoporous SiO2 with the surface coated with a polydopamine layer is prepared; s2, preparing a phosphorylated polyether-ether-ketone whisker; s3, performing ultrasonic treatment on the silver-loaded mesoporous SiO2 and the phosphorylated polyether-ether-ketone whisker in a buffer solution to form a bonding filler; s4, the bonding filler, isocyanuric acid tris (2-acryloyloxyethyl) ester, glycidyl methacrylate, a photoinitiator and a polymerization inhibitor are mixed, a low-viscosity resin mixture is obtained, and the addition amount of the bonding filler is 10-20 parts by mass per 100 parts by mass of the resin matrix; and S5, performing 3D printing and post-curing on the low-viscosity resin mixture. According to the method, through the synergistic effect of the two-stage filler and the adaptability of a low-viscosity resin formula, the 3D printing adaptability is achieved under the low filling amount, and the technical problem that high-filling-amount resin cannot be subjected to digital forming is solved.

The application discloses a polarizer protective film and a preparation method thereof, and the polarizer protective film is prepared from polymethyl methacrylate (PMMA), cellulose ester, maleic anhydride grafted ethylene-methyl acrylate copolymer (MAH-g-EMA) and isocyanuric acid triglycidyl ester (TGIC) composite additives, wherein the PMMA is 55-70 parts, the cellulose ester is 25-40 parts, the MAH-g-EMA in the composite additives is 2-5 parts, and the TGIC is 0.4-1.2 parts; the number average molecular weight Mn of the MAH-g-EMA is 28000-35000, and the molecular weight distribution index PDI is less than or equal to 1.3. Through the synergistic enhancement design of the PMMA, the cellulose ester and the MAH-g-EMA / TGIC composite additives with specific Mn and PDI, the polarizer protective film can keep high transparency and low haze, and the water absorption can be significantly reduced, and the moisture heat aging stability can be improved.

The invention belongs to the field of functional polymers, and particularly relates to a high-toughness, repairable and recoverable epoxy vitrimer and a preparation method thereof.The epoxy vitrimer is obtained through a ring-opening polymerization reaction of dithiodiphenyl diglycidyl ether, bisphenol A diglycidyl ether and isocyanuric acid tris [2-(3-mercaptopropionyloxy) ethyl ester] at the temperature ranging from the room temperature to 100 DEG C. The epoxy vitrimer has the advantages that the epoxy vitrimer is high in toughness, can be repaired and recoverable, and can be recycled; after being completely cured, the high-toughness characteristic is shown, the tensile strength is not lower than 40 MPa, and the elongation at break is not lower than 140%. Meanwhile, the epoxy vitrimer can realize the characteristics of being repairable and recoverable at a high temperature.

The application relates to the technical field of solid electrolytes, in particular to a gel polymer electrolyte and a preparation method and application thereof, the preparation method of the gel polymer electrolyte comprises the following steps: S1, mixing polyethylene glycol diacrylate, N,N'-bis(acryloyl)cystamine and tris(2-hydroxyethyl)isocyanuric acid triacrylate in a protective atmosphere to obtain a polymer monomer mixture, then placing the polymer monomer mixture and an initiator in a lithium-based electrolyte, stirring, and obtaining a precursor solution; S2, solidifying the precursor solution to obtain the gel polymer electrolyte. The preparation method provided by the application is simple in process, raw materials are easy to obtain, and the method is easy to put into large-scale production. Meanwhile, the gel polymer electrolyte prepared has good mechanical properties and high room-temperature ionic conductivity.

Provided is a white adhesive with excellent oxygen barrier properties.　This two-part curable adhesive includes a polyol composition (X) and a polyisocyanate composition (Y). The polyol composition (X) includes a polyol compound (A) and a white pigment (B). The polyisocyanate composition (Y) includes an isocyanate compound (C). The polyol compound (A) is at least one selected from: polyester polyols (A1-1) obtained by polycondensation of a polycarboxylic acid including an ortho-orientated polycarboxylic acid with a polyhydric alcohol; polyester polyols (A1-2) having an isocyanuric ring; and polyester polyols (A1-3) having a polymerizable carbon-carbon double bond. The polyol compound (A) includes polyester polyols (A1) having a molecular weight of 200-2,000 g / mol.

The application discloses a preparation method of a sheet structure cyanuric acid / melamine composite. The method comprises the following steps: adding an inhibitor, cyanuric acid and melamine in water, reacting at a temperature of 90-98 DEG C for 2-4 hours, and then filtering, washing and drying to obtain the sheet structure cyanuric acid / melamine composite, wherein the molar ratio of the cyanuric acid and the melamine is (0.95-1.05):1, and the mass ratio of the total amount of the cyanuric acid and the melamine, the inhibitor and water is 1:(0.005-0.007):(2-5), and the inhibitor is a sodium naphthalene sulfonate formaldehyde polycondensate, a polydiallyldimethylammonium chloride and a melamine polyphosphate with a mass ratio of 3:(1-2):(1-2). The method can prepare the sheet structure cyanuric acid / melamine composite, the particle size of which reaches the nanometer level, the dispersibility is good, and the flame retardancy is good.

This invention discloses a low-allergenic, high-activity powder coating curing agent and its preparation method, relating to the field of powder coating technology. The preparation method includes: mixing isocyanuric acid, epichlorohydrin, and an addition reaction catalyst including a phase transfer catalyst to perform an addition reaction; subsequently adding a base to perform a ring-closure reaction; allowing the mixture to stand and separate into layers to obtain a lower crude product; subjecting the lower crude product to vacuum distillation to obtain a distilled product; adding a solvent to the distilled product, stirring to dissolve, and then adding hydrogenated vegetable oil to form a coated crystallization system; followed by cooling crystallization, separation, and drying to obtain the final product. This invention, through the combination of addition ring closure, vacuum distillation, and in-situ oil phase crystallization coating, not only suppresses side reactions at the source and deeply removes harmful residues, significantly reducing the free epichlorohydrin residue in the finished product and almost completely eliminating skin and respiratory sensitization toxicity; but also effectively stabilizes the single-crystal regular crystal form, significantly narrows the melting range, and greatly enhances the activity of the curing agent.

A multifunctional detection test kit includes a water test paper including a base and a plurality of test modules provided on different test zones of the base. Each of the test modules is configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine water hardness, lead, iron, copper, nitrite, nitrate, MPS, nickel, and phosphate.

The invention discloses a multifunctional ultra-small nano-silver material and a preparation method and application thereof. The preparation method comprises the following steps: self-assembling melamine and cyanuric acid through hydrogen bonds to form a three-dimensional network template; adsorbing and confining silver ions in the template; glucose is used as a green reducing agent, limited-range silver ions are subjected to in-situ reduction under the heating condition, and finally the nano-silver material is obtained through aftertreatment. Through a unique self-assembly template method, controllable preparation of superfine and high-dispersion nano-silver with the average particle size of about 2 nanometers is successfully achieved. The material has excellent antibacterial performance and excellent mimetic peroxidase activity, the performance of the material is far superior to that of nano-silver prepared through a conventional method, and the material has wide application prospects in the fields of biomedicine, catalytic sensing, environmental governance and the like. The method is simple in process, environmentally friendly and low in cost, and has remarkable industrialization potential.

The invention relates to an oxygen-doped carbon nitride photo-anode and a preparation method and application thereof, and belongs to the technical field of photoelectrochemical cathode protection. The preparation method of the oxygen-doped carbon nitride photo-anode comprises the following steps: dissolving melamine and cyanuric acid in a solvent I to obtain a precursor solution, centrifuging the precursor solution, collecting precipitate, washing the precipitate, and drying to obtain a precursor; mixing the precursor with a solvent II to obtain slurry, coating a substrate with the slurry, and drying to obtain a precursor film; and calcining the precursor film and melamine in inert gas to obtain the composite material. According to the oxygen-doped carbon nitride photoanode and the preparation method thereof, the carbon nitride photoanode with different oxygen doping amounts is obtained by regulating and controlling the proportion of cyanuric acid to melamine, and the oxygen-doped carbon nitride photoanode is prepared by introducing part of an oxygen-containing structure into a carbon nitride skeleton through condensation and rearrangement of cyanuric acid and amino while the completeness of the carbon nitride triazine skeleton is kept.

The utility model discloses a cyanuric acid production crude product crushing device which comprises a processing box, one side of the top end of the processing box is fixedly communicated with a feeding hopper, first hinge seats are fixedly arranged in the middles of the two sides of the inner wall of the feeding hopper, sealing plates are hinged to the middles of the two first hinge seats, and third hinge seats are fixedly arranged at the bottom ends of the two sealing plates. According to the crude product smashing device for cyanuric acid production, the two third hinge seats are pushed to move through the two electric telescopic rods respectively, so that the two sealing plates rotate through the two first hinge seats respectively till one ends of the two sealing plates make contact with each other, and the two ends of the two sealing plates make contact with each other; and air in the dust collecting box is pumped out through the air pump, so that negative pressure is generated in the dust collecting box and the guide pipe, dust generated by smashing is collected through the dust collecting cover, and the situation that the dust flies and pollutes the environment is avoided.