145 results about "Dye molecule" patented technology

The invention provides a fullerene pyrrolidine enantiomer mediated cholesteric liquid crystal with circular polarization luminescence property and nonlinear anti-saturated absorption property, and a preparation method and application thereof. The method comprises the following steps: dissolving C60, paraformaldehyde and (R / S)-(+ / -)-alpha-methylbenzylamine in an organic solvent, and carrying out heating reflux reaction to obtain fullerene pyrrolidine enantiomer molecules; dissolving in carbon disulfide to obtain an enantiomer solution; dissolving achiral dye molecules in a solvent to obtain a dye solution; and dropwise adding the enantiomer solution and the dye solution into thermotropic liquid crystal molecules, and drying to obtain the thermotropic liquid crystal. The method is simple, the obtained cholesteric liquid crystal system shows a characteristic fingerprint texture and has a periodic spiral structure, and the doping proportion of chiral molecules is easy to adjust; the composite system has good time stability and is not prone to phase separation; the liquid crystal platform shows good circular polarization luminescence performance and third-order nonlinear optical property, and is a cholesteric liquid crystal platform with an integrated function.

The invention discloses a preparation method of a chitosan modified polymeric dye and application of the chitosan modified polymeric dye in a temporary hair dye, and belongs to the technical field of polymeric dyes. The preparation method comprises the following steps: (a) dissolving dye containing monohydroxyl or monoamino in an organic solvent to obtain a solution A; (b) dissolving isocyanate in an organic solvent to obtain a solution B; dropwise adding the solution A into the solution B at the temperature of 20-80 DEG C, and reacting at the temperature of 20-80 DEG C to obtain a modified dye molecule solution C; (c) dissolving chitosan in a mixed solvent of water and ethanol to form a chitosan solution; and dropwise adding the modified dye molecular solution C into the chitosan solution, and reacting at 10-50 DEG C to obtain the chitosan modified macromolecular dye. The modified polymer dye has the characteristics of high safety, high stability, strong binding force with hair and the like, so that a temporary hair dye prepared from the modified polymer dye has a good dyeing effect.

The invention relates to the technical field of dye separation, and discloses a loose nanofiltration membrane and a preparation method and application thereof, the loose nanofiltration membrane comprises a porous support membrane, and a polyesteramide separation layer formed on the porous support membrane through one-step interfacial polymerization of nucleoside monomers and multi-acyl chloride monomers. The nucleoside monomer is one or more than two of adenosine, guanosine and cytidine nucleoside. The nucleoside monomer with a long-chain structure, a branched-chain structure, a rigid twisted structure and a plurality of hydrophilic reaction sites is selected as an interfacial polymerization water-phase monomer, so that the loose nanofiltration membrane is endowed with excellent permeation and separation performance. The membrane has a high rejection rate on dye molecules such as Congo red and methyl blue, also has high water permeability and extremely high dye / inorganic salt separation selectivity, and shows good application potential in the aspects of dye production and purification and dye wastewater recovery.

The application discloses a structural color pressure-sensitive film based on a hollow polymer colloidal photonic crystal and a preparation method and application thereof, and belongs to the technical field of force-induced color-changing materials. The preparation method of the structural color pressure-sensitive film comprises the following steps: (1) uniformly dispersing core-shell nano colloidal particles in an organic solvent to obtain a colloidal particle dispersion liquid; the shell layer of the core-shell nano colloidal particles is a polymer material, and the core layer is an inorganic oxide; (2) coating the colloidal particle dispersion liquid on the surface of a flexible substrate, and obtaining a precursor photonic crystal film after heating; and after removing the core layer of the core-shell nano colloidal particles in the precursor photonic crystal film by acid treatment etching, the structural color pressure-sensitive film is obtained. The preparation method of the structural color pressure-sensitive film is simple, the conditions are mild, and no pigment dye molecules are needed; by utilizing the pressure deformation and shape memory characteristics of a single hollow polymer colloidal particle itself and the inherent structural color characteristics of a photonic crystal, the structural color pressure-sensitive film can realize the regulation and memory of rich and high-saturation structural colors under the action of pressure.

The invention discloses a bisazo blue reactive dye for high-temperature dip dyeing as well as a preparation method and application of the bisazo blue reactive dye. The reactive dye is shown in a structural general formula (I). A color body of the reactive dye is of a bisazo structure, the color body contains two naphthalene ring structures and a benzene ring structure, and an active group in a dye molecular structure is quaternary ammonium salt containing a nicotinic acid structure. According to the present invention, the binding force between the dye and the fiber can be improved through the coplanarity of the chromophore molecules, the dissociation between the dye and the fiber at the high temperature can be reduced, and the dye uptake of the dye at the high temperature can be improved, such that the fixation rate between the dye and the fiber can be improved; meanwhile, quaternary ammonium salt containing a nicotinic acid structure can react with fibers under the high-temperature neutral condition, an alkaline agent does not need to be added in the whole dyeing process, the problem of environmental pollution caused by the alkaline agent in the printing and dyeing wastewater is solved, and wide application prospects are achieved.

The invention relates to the field of dye chemistry, and discloses an acid dye with high color fastness, a preparation method of the acid dye and application of the acid dye in textile dyeing. According to the dye molecule, a 4-sulfo benzene ring and a 2, 5-dichlorobenzene ring are connected through an azo bridge (-N = N-), and a polysulfonate substituent group (-SO3Na) is introduced to a molecular skeleton to form a symmetric azo conjugated structure. The preparation method comprises the steps of nitration, reduction, sulfonation, diazotization, coupling and the like, the process conditions are mild, and the yield is stable. The obtained dye has a strong absorption peak in the range of 540-560nm, and the molar absorption coefficient epsilon is greater than or equal to 1.0 * 10 < 5 > L.mol <-1 >. Cm <-1 >. Compared with the conventional acid red dye, the dye has the advantages that the light fastness can reach grade 8, the fastness to washing is grade 7 or above, the color is bright, the color layer is uniform, the high dye-uptake can be realized under the low-salt condition, the conductivity of waste liquid is remarkably reduced, and the dye is suitable for dyeing protein fibers such as wool, nylon and silk.

The application discloses a short-process printing process of polyester-cotton blended fabric, which comprises screen printing by using active disperse dyes containing double active groups and steaming by using alcohol vapor; the double active groups include hydroxyethyl sulfone sulfate group and CH2CH(OH)CH2X (X is Br or Cl); the CH2CH(OH)CH2X can be converted into an epoxy group under alkaline conditions and can react with the alcohol vapor during the steaming process to realize the cross-linking between dye molecules, so that the effects of improving the fixation efficiency and shortening the process flow are achieved, and then the printed fabric with high color depth and high color fastness is obtained.

The invention relates to an azo blue dichroic dye compound and application thereof, and belongs to the technical field of organic optical materials. In order to solve the problem of insufficient thermal stability of the existing azo blue dichroic dye compound, the invention provides an azo blue dichroic dye compound with a structure as shown in a formula I, r1 and R4 are respectively and independently selected from C1-C6 saturated alkyl substituent groups, R2 represents-H, CH3 or-F, R3 represents hydrogen atoms or C1-C6 saturated alkyl substituent groups, and R2 and R3 cannot be hydrogen atoms at the same time. The molecular structure can effectively inhibit the risk of thermal isomerization of azo bonds, improves the stability of dye molecules in a high-temperature environment, and can be used for high-temperature application scenes such as vehicle-mounted sunroofs and the like.

The present application relates to the technical field of molecular sieve, in particular to a kind of molecular sieve self-assembly light response membrane and its preparation method and application.Utilize the supramolecular assembly based on dithiophene ethylene derivative and calabash urea as basic functional unit, after being coated on substrate, it is introduced into oil phase solution, and composite polyamide membrane is formed on substrate surface using interfacial polymerization reaction.Based on the host-guest recognition ability of dithiophene ethylene derivative and calabash urea, a dynamic adjustable recognition system is formed.Under light condition, the recognition ability of the whole system to molecule is influenced by changing the configuration of molecule.The self-assembly light response membrane has good dye interception effect and small cut-off molecular weight, and can realize accurate screening of similar molecular weight dye molecules, and is expected to be widely applied in wastewater treatment field.

The invention discloses a covalent organic framework membrane with an asymmetric structure as well as a preparation method and application thereof, and the preparation method comprises the following steps: preparing a trialdehyde phloroglucinol solution as an aldehyde solution, preparing a 2, 5-diaminobenzene sulfonic acid solution as an amine solution, and dripping the aldehyde solution into the amine solution under stirring to obtain a COF nanosheet mixed solution; diluting with deionized water to obtain a diluent, and dialyzing to obtain a COF nanosheet dispersion liquid; adding the COF nanosheet dispersion liquid into ethanol to obtain a second dispersion liquid; carrying out vacuum filtration on the second dispersion liquid to deposit the COF nanosheets on the nylon base membrane, and drying to obtain a Primary COF membrane; carrying out vacuum filtration on a gamma-cyclodextrin aqueous solution, depositing gamma-cyclodextrin on a Primary COF membrane, and drying to obtain a covalent organic framework membrane with an asymmetric structure; through a mixed solution nanofiltration test experiment, the membrane disclosed by the invention has the capability of separating dye molecules and salt ions in salt-containing wastewater or dye-containing wastewater.

The invention belongs to the technical field of textile dyeing and finishing assistants, and discloses a high-efficiency level dyeing assistant for dyeing and finishing and a preparation method thereof, the assistant is formed by assembling an amphiphilic block copolymer and a dynamic reversible covalent bond polymer, the block copolymer has hydrophilic and oleophylic sections, nano-scale micelles are formed through self-assembly, and the nano-scale micelles are uniformly dispersed in the dynamic reversible covalent bond polymer. Dye molecules can be efficiently captured, slowly released and stably dispersed; a reversible ketoxime bond is introduced into a main chain of the dynamic polymer to form a cross-linked network with micelles, so that the assistant keeps a stable structure under a dyeing condition; after dyeing and finishing are finished, reversible bond breakage is triggered through acid-base adjustment or reducing agent treatment, micelles are rapidly depolymerized, and the auxiliaries are recycled and can be repeatedly used; the auxiliary agent can significantly improve the uniform dispersion of dye in dye liquor and the color consistency of fabric, enhance the color fastness, reduce the dosage of the auxiliary agent and reduce the wastewater treatment load, and has good environmental protection and cyclic utilization performance.

This invention relates to a lysosome-targeting fluorescent dye based on the BODIPY structure and its synthesis method, belonging to the field of organic fluorescent dyes. The invention designs and synthesizes the lysosome-targeting fluorescent dye BDP. The dye molecule uses BODIPY as the parent structure, and a novel lysosome-targeting fluorescent dye molecule is synthesized by introducing diphenylphosphine salt and tert-butyloxycarbonyl groups. The synthetic route of this dye is simple, it possesses excellent photostability, and exhibits good resistance to interference from ions, amino acids, and viscosity. Furthermore, this dye demonstrates superior fluorescence performance in a variety of common solvents, with fluorescence quantum yields exceeding 0.70. Experimental results show that this fluorescent dye can precisely target lysosomes in living cells, demonstrating promising applications in the field of bioimaging.

The invention discloses an ABS (Acrylonitrile Butadiene Styrene) composite material as well as a preparation method and application thereof. The ABS composite material is prepared from the following components in parts by weight: 87 to 99 parts of ABS resin, 0.5 to 5 parts of lanthanide oxide, 0.5 to 5 parts of liquid crystal polymer, 0.1 to 0.5 part of carbon nano tube, nano zinc oxide, organic dye molecules and a carbon-based nano material, the mass ratio of the nano zinc oxide to the organic dye molecules to the carbon-based nano material is (2-4): (3-5): (2-4); the total dosage of the nano zinc oxide, the organic dye molecules and the carbon-based nano material is 3-7 parts. According to the ABS composite material provided by the invention, the time required by laser marking is shortened, the definition of laser marking is improved, and the carbonization or yellowing phenomenon caused by local overheating of the surface of the material is avoided.

The invention belongs to the technical field of textile printing and dyeing, and discloses a color fixing agent for polyester and a preparation method thereof. Polyethyleneimine, glycidyl methacrylate, a cationic monomer and 1-allylimidazole are used as main raw materials, a novel cationic polymer is constructed through amido epoxy ring opening and free radical copolymerization, the cationic polymer has a medium molecular weight, and a molecular chain is rich in acting force anchor points, so that the cationic polymer can be used for preparing a polymer with high molecular weight. Strong electrostatic adsorption, hydrogen bonds, Van der Waals force and the like can be generated with polyester groups, carboxyl groups and dye molecules on the fibers at the same time, so that the affinity adsorption of the dye to the fibers is ensured. Moreover, the color fixing agent molecules with medium chain length can realize rapid permeation in the fiber, and can wrap the dye molecules sufficiently, so that the color fixing effect is improved.

The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater resourceful treatment method which comprises the following steps: S1, conveying to-be-treated printing and dyeing wastewater to a flocculating settling unit through a pipeline, adding a flocculating agent, stirring, mixing and reacting to aggregate suspended solids, colloids and part of dye molecules into flocs, and filtering to obtain a filtrate; after settling, collecting upper-layer clarified liquor to obtain pretreated wastewater; s2, feeding the pretreated wastewater into a carbon discharge unit, and removing inorganic carbon in the wastewater to obtain carbon-discharged wastewater; and S3, introducing the carbon-discharged wastewater into a micro-electrolysis unit, adding an oxidizing agent, and generating hydroxyl radicals under the action of a catalyst to obtain oxidative degradation wastewater. The flocculation-microelectrolysis-nanofiltration-electrodialysis coupling technology is adopted, efficient removal of organic matter, salt resource recycling and acid-alkali co-production are achieved, the added value of products is increased, obtained acid and alkali can be directly reused for cloth dyeing, and the service life of a membrane is prolonged.

The application discloses a kind of magnetic nanocomposite and its application in dye wastewater treatment, belong to water treatment functional material technical field.The magnetic nanocomposite with Fe3O4 Magnetic Nanoparticle as core, successively coats silica layer, graphene nanosheet layer and chitosan crosslinking layer, through the synergistic effect of chitosan liquid ultrasonic modification and graphene nanosheet surface modification, realize efficient adsorption and magnetic separation recovery to dye molecule.The preparation process of the application is mild controllable, environment-friendly, cost moderate, has wide application prospect in printing and dyeing wastewater advanced treatment, industrial dye pollution control field, graphene nanosheet greatly promotes specific surface area and adsorption site, chitosan provides a large number of amino / hydroxyl active groups, three synergies realize high adsorption capacity.Graphene nanosheet is reduced by liquid phase ultrasonic stripping, avoids stacking;Chitosan is modified by ultrasonic and TiO2 is scattered, combination is more firm, material structure is stable, not easy to lose, acid and alkali resistant.

This invention relates to a method for dyeing fabrics, yarns and fibers using microorganisms whereby the adsorption of dye-containing microorganisms onto textile fibers is improved using carbon sources above a threshold concentration. Dye molecules contained within the microorganism are released from the microorganism and fixed directly and locally to the textile fibers using a heat treatment step. Said heat treatment also deactivates the carrier microorganisms. Single or multiple microorganism species, and single or multiple dyes produced by said single or multiple microorganism species may create a variety of textile colors. Suitable synthetic dyes may also be added before, during or after microorganisms have produced dyes but before the dye-releasing heat treatment step.

A composition includes a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye functionalized with a functional group. The functional group includes an aromatic compound with a primary amine. The functionalized fluorescent dye can be mixed with a fluid to form a tracer fluid for tracing fluid flow in a subterranean formation.

The invention relates to the technical field of microfiber leather processing, in particular to a high-color-fastness polyester suede microfiber production process which comprises the following steps: leather splitting treatment: uniformly dividing base cloth into two layers of to-be-processed leather through a splitting machine; sanding for the first time; two-stage dyeing is conducted, dyeing is conducted at the normal temperature for the first time, then the temperature is increased to 98 DEG C to 135 DEG C in a gradient mode, and heat preservation is conducted for 55 min to 75 min; performing programmed cooling to 60 DEG C or below; dyeing for the second time at normal temperature, then heating to 90-110 DEG C in a gradient manner, and keeping the temperature for 35-45 minutes; then carrying out gradient cooling to 60 DEG C or below; after dyeing is completed, the dyed leather is washed with water to remove surface flooding; setting treatment, wherein the cleaned leather is subjected to high-temperature setting through a setting machine; secondary sanding is conducted, specifically, secondary sanding is conducted on the shaped leather so as to optimize the suede effect; and kneading and sucking treatment: kneading the skin by using a blast skin kneading machine. Double-dye staged dyeing is adopted, so that dye molecules fully permeate into the fibers, and the color fastness is high after surface dyeing and cleaning.

The invention discloses application of a lignin-based flocculating agent to treatment of wastewater containing anionic dye, and belongs to the technical field of wastewater treatment. According to the invention, an in-situ initiation graft copolymerization process is adopted, a three-dimensional network structure of lignin is taken as a skeleton, methacryloyloxyethyl trimethyl ammonium chloride and an acrylamide monomer are grafted, and the lignin-based flocculant with both a lignin skeleton and a cationic polymer branch chain is synthesized. According to the lignin-based flocculant, anionic dye molecules are unstable through charge neutralization to form tiny flocs, then the tiny flocs grow into large flocs through hydrogen bond combination, and then precipitation separation is conducted under the action of gravity. Compared with commercialized cationic polyacrylamide, the lignin-based flocculant prepared by the method has obviously higher removal rate on anionic dyes, and the removal rate can reach 98% or above.

The invention relates to the technical field of natural product processing and textile dyes, in particular to a method for improving light fastness of a pomegranate peel vegetable dye and the pomegranate peel vegetable dye. The method comprises the steps of raw material pretreatment, high-pressure extraction, solid-liquid separation, concentration, ultraviolet absorbent compounding and drying powder preparation. According to the invention, an ultraviolet absorbent, especially an innovative metal complex type ultraviolet absorbent, is uniformly mixed and reacted with a pomegranate peel extract in a dye concentrated solution, so that molecular-level compounding is realized; in the subsequent dyeing and product using process, the ultraviolet absorbent is chemically anchored on dye molecules, so that the ultraviolet absorbent is not easy to lose, and the ultraviolet light energy can be continuously and efficiently absorbed and dissipated; the metal complex type ultraviolet absorbent is used, the coordination reaction of metal ions and tannin can cause color change, high light fastness is achieved, meanwhile, the color gamut limitation of natural pomegranate peel dye is broken through, and the light fastness improving effect is extremely remarkable and lasting.

The invention discloses benzothiadiazole near-infrared two-region fluorescent dye molecules as well as a preparation method and application of the benzothiadiazole near-infrared two-region fluorescent dye molecules, and the benzothiadiazole near-infrared two-region fluorescent dye molecules are respectively marked as BTDN-CZ-TH, DBTDN-CZ-TH, BTDN-CZ-BTH, DBTDN-CZ-BTH, BTDN-CZ-TTH and DBTDN-CZ-TTH. The benzothiadiazole near-infrared two-region fluorescent dye molecule has a donor-acceptor-pi (D-A-pi) special electronic structure, has high fluorescence quantum yield, can effectively overcome the fluorescence quenching effect caused by pi conjugated system extension, and has enhanced fluorescence under high concentration.

The invention belongs to the field of detection application, and particularly relates to an Ag-coated SnS composite material, a preparation method of the Ag-coated SnS composite material and deep application of the Ag-coated SnS composite material in the field of dye molecule detection.The preparation method comprises the steps that firstly, tin trifluoromethanesulfonate and sodium thiosulfate serve as a tin source and a sulfur source respectively, and stannous sulfide is prepared through a hydrothermal method; then silver nitrate and sodium borohydride are utilized to attach silver to the surface of stannous sulfide through a chemical reduction method to obtain the Ag-coated SnS composite material, the obtained mixed material of the precious metal and the semiconductor utilizes the SERS technology to detect dye molecules in a trace mode, and the method has important significance in application to actual life.

This invention belongs to the field of aluminum powder preparation technology, and relates to a method for preparing aluminum powder from waste aluminum-plastic composites. The addition of fatty alcohol polyoxyethylene ether in this invention causes bubble collapse during the aluminum-plastic separation process. After distributing on the bubble surface, it attracts the hydrophobic end of a quaternary ammonium cationic surfactant, making it hydrophilic and allowing it to enter the aqueous phase, thus achieving a defoaming effect. This invention utilizes the quaternary ammonium cationic surfactant, through adsorption bridging and adsorption charge neutralization, to destabilize the dye molecules in the aluminum-plastic composite and separate them from water, thereby achieving a decolorization effect on the dye molecules on the plastic surface and significantly reducing the impurity content on the separated aluminum-plastic surface. This invention's recycling and preparation method is simple, with minimal aluminum powder loss, and is suitable for large-scale environmentally friendly industrial production.

Disclosed is a wavelength-adjustable stimulated-emission nanoprobe, comprising an Au nanorod, a dye molecule, a mesoporous silica shell layer, and a hyaluronic acid encapsulation layer. The Au nanorod is used as a plasmonic resonant cavity of the stimulated-emission nanoprobe, and the dye molecule is used as a gain medium. By regulating and controlling the energy transfer between the gain medium and the plasmonic resonant cavity, a stimulated-emission nanoprobe having a pump threshold of 0.5 mJ / cm2, a stimulated-emission spectrum linewidth of 3-10 nm, and a wavelength that can be flexibly adjusted is prepared. The probe has the advantages of overcoming the limitation of a relatively wide spectral linewidth of traditional fluorescent probes , and solving the problem that the wavelength of a stimulated-emission nanoprobe is difficult to adjust, thus opening up new avenues for realizing multi-channel imaging in a complex biological environment.

The application provides a preparation method of a nanofiltration membrane, and belongs to the technical field of membrane separation. The method comprises the following steps: immersing a polyimide membrane into a crosslinking solution to obtain a support layer; immersing the support layer into a mixed solution of 1,3,5-tris(tris(2-hydroxyethyl)ammonium methyl)benzene and an amino alcohol, and then air-drying to obtain an intermediate; pouring a polyacyl chloride solution onto the surface of the intermediate, and then drying to obtain the nanofiltration membrane. The 1,3,5-tris(tris(2-hydroxyethyl)ammonium methyl)benzene and the small-molecule amino alcohol with strong hydrophilicity are mixed, and then subjected to an interfacial reaction with the polyacyl chloride solution to construct a separation layer of the nanofiltration membrane. The nanofiltration membrane has a regular pore structure, can realize size screening on dye molecules, and the negative charge on the surface of the nanofiltration membrane can produce electrostatic repulsion on anionic dyes, so that the rejection performance of the nanofiltration membrane on the anionic dyes is improved and the flux is maintained.

The application relates to a kind of polyether ether ketone hollow fiber loose nanofiltration membrane and its preparation method and application, belong to nanofiltration membrane technical field.Solve the problem that the mechanical strength and flux of existing polyether ether ketone hollow fiber nanofiltration membrane cannot be considered.The method of the present application, first dry polyether ether ketone powder and polyetherimide powder are blended, then melt granulation, then the obtained blended resin particles are extruded, then the obtained blended precursor hollow fiber is heat treated, extracted into selective extractant to extract pore, finally the obtained nascent polyether ether ketone hollow fiber is first cold stretched, then heat stretched, to obtain nanofiltration membrane.The nanofiltration membrane has high strength, high flux and excellent acid, alkali and organic solvent corrosion resistance, the rejection rate of macromolecular weight (>=600Da) dye molecules is more than 95%, and the rejection rate of monovalent salt such as sodium chloride is less than 10%.It is suitable for dye desalination, printing and dyeing wastewater treatment and high value-added dye recovery and other separation processes in harsh environment.

The invention relates to a preparation method of a modified acid red 289 dye for photoresist, which is mainly used in the manufacture of an optical color filter of a color liquid crystal display, and comprises the following steps: (1) pigment synthesis: dissolving acid red 289 in methanol, adding concentrated hydrochloric acid for reaction, stirring, and filtering to obtain a pigment; converting a sulfonate group in a dye molecule into a sulfonic acid group, and after the reaction is finished, filtering and drying to obtain R289-H; (3) kneading treatment: adding the R289-H obtained in the step (1), an inorganic salt, a solvent, the resin obtained in the step (2) and an auxiliary agent into a kneading machine, carrying out a kneading reaction, and after the reaction is finished, washing and drying to obtain the modified acid red 289 dye for the photoresist. According to the invention, the problem that acid red 289 is difficult to dissolve in propylene glycol methyl ether acetate is solved, and the chromaticity and contrast of the modified dye are further improved.

The application discloses a method for dye degradation by using adsorption coupling advanced oxidation technology, wherein a metal-doped polyaniline adsorbent is used for enrichment and separation of dye molecules in dye wastewater, the adsorbent with the dye molecules is placed in a small volume of water to prepare a suspension solution, and then a certain amount of oxidant is added to carry out heterogeneous Fenton reaction, so that the dye molecules on the surface of the adsorbent are degraded and mineralized. The metal ions doped in the polyaniline are used as catalytic active sites, and can catalyze hydrogen peroxide, persulfate and other oxidants to produce strong oxidizing active radicals, such as hydroxyl radicals and sulfate radicals, so as to oxidize and degrade the dye molecules adsorbed by the polyaniline. The method can effectively avoid the treatment of desorption liquid after a traditional polyaniline adsorption process and the regeneration process of the adsorbent, and has great application prospect and value.