628 results about "Electron transfer" patented technology

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof, an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

NADP-dependent oxidoreductase compositions, and electrodes, sensors and systems that include the same. Analyte sensors include an electrode having a sensing layer disposed thereon, the sensing layer comprising a polymer and an enzyme composition distributed therein. The enzyme composition includes nicotinamide adenine dinucleotide phosphate (NAD(P)+) or derivative thereof; an NAD(P)+-dependent dehydrogenase; an NAD(P)H oxidoreductase; and an electron transfer agent comprising a transition metal complex.

The invention discloses a metal in-situ anchoring carbon nanocluster catalyst as well as a preparation method and application thereof, and belongs to the technical field of unconventional oil and gas resource development. The metal in-situ anchored carbon nano-cluster catalyst provided by the invention is amorphous nano-particles without pore channel confinement, all active sites are exposed on the surface, and macromolecular organic matters in an in-situ pyrolysis process can be directly adsorbed and activated; the metal center is anchored to a flexible carbon skeleton in an atomic scale through M-N-C and M-O-C coordination bonds, and high dispersity and structural stability are still kept at the formation temperature of 500 DEG C; meanwhile, the catalyst is easily and uniformly injected into an oil shale reservoir through fracturing fluid and is well dispersed in a complex pore network, and the solid-solid catalytic interface efficiency is remarkably improved; the catalyst does not have a strong acid center, promotes selective fracture of C-C / C-H bonds mainly through metal electron transfer, and reduces the risk of formation blockage; therefore, the method has a good application prospect in oil shale in-situ pyrolysis.

The invention belongs to the technical field of gene engineering, and particularly relates to fusion vitamin D hydroxylase and application thereof in preparation of 25-hydroxy vitamin D2 and 25-hydroxy vitamin D3. The fusion vitamin D hydroxylase comprises a Vdh-K1 heme structural domain of which the amino acid sequence is shown as SEQ ID NO.1, a CYP116B65 redox structural domain of which the amino acid sequence is shown as SEQ ID NO.3, and a linker for connecting the Vdh-K1 heme structural domain and the CYP116B65 redox structural domain. The fusion vitamin D hydroxylase is a self-sufficiency enzyme, and can realize stable catalytic conversion of vitamin D2 and vitamin D3 on the premise of not depending on an Fdx and Fdr assisted electron transfer system.

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention discloses a preparation method of a modified zinc-bromine flow battery carbon felt negative electrode and the carbon felt negative electrode prepared by the method, and belongs to the field of zinc-bromine flow batteries. A copper organic matter precursor is heated and gasified in a double-temperature-zone tubular furnace, molecules of the partially gasified copper organic matter precursor are loaded to the position where a carbon felt is located by hydrogen and adsorbed on the carbon felt, the copper organic matter precursor reacts with the hydrogen to form a copper elementary substance, and the copper elementary substance is attached to the surface of the carbon felt to form a load. Therefore, the purpose of modifying the carbon felt by loading the copper elementary substance is achieved. According to the method, the obstruction of low conductivity of the loaded oxide on electron transfer in the zinc deposition / stripping process is overcome; inactivation caused by reaction of loaded metal active sites and electrolyte acidic components is avoided; and the problem that the internal fibers of the carbon felt are difficult to uniformly load metal elementary substances or oxide particles due to high surface tension between the metal salt solution and the carbon felt is solved, efficient and uniform loading of the copper elementary substances on the carbon felt is realized, and the negative electrode performance of the zinc-bromine flow battery is remarkably improved.

The invention relates to a 1D / 2D dual-heterojunction catalyst, a preparation method thereof and application of the 1D / 2D dual-heterojunction catalyst in photo-assisted periodate activated degradation of bisphenol A. The preparation method comprises the following steps: mixing a concentrated hydrochloric acid solution with LiF, adding Ti3AlC2, carrying out a heating reaction, carrying out solid-liquid separation to obtain a solid phase, washing the solid phase to be neutral, and dispersing the solid phase in ethanol to obtain an MXene ethanol solution; adding a cerium source aqueous solution into an MXene ethanol solution, mixing, and placing in liquid nitrogen to obtain a mixed solution; mixing an organic ligand, ethanol and pure water to obtain a mixed solution, carrying out a mixed heating reaction on the mixed solution and the mixed solution, carrying out solid-liquid separation to obtain a precipitate, and freeze-drying to obtain powder; and heating and calcining the obtained powder in an inert atmosphere to obtain the 1D / 2D dual-heterojunction catalyst. According to the invention, photogenerated electron-hole recombination is effectively inhibited by constructing double heterojunctions, and ultrafast electron transfer is realized at the same time, so that the oxidation effect is enhanced, and the efficient photocatalytic activity of '1 + 1gt, 2' is realized.

The invention relates to the field of water environment pollution treatment, in particular to a bimetal MOF modified cellulose derived carbon aerogel catalyst as well as a preparation method and application thereof. The method comprises the following steps: 1) dissolving a transition metal salt and an organic ligand in an organic solvent to prepare a bimetallic MOF precursor solution; 2) dissolving a cellulose derivative in water, and treating to prepare cellulose aerogel; (3) immersing cellulose aerogel into the precursor solution, and carrying out in-situ growth to prepare MOF modified cellulose gel; and 4) carrying out carbonization treatment on the modified cellulose gel to prepare the bimetallic MOF modified cellulose-derived carbon aerogel catalyst. The catalyst has extremely high physical and chemical stability, meanwhile, the catalytic performance of the catalyst is effectively improved by means of mechanisms such as bi-metal synergism, graded electron transfer and high-dispersion active sites, and the catalyst can be effectively used for effective and efficient catalytic degradation of organic pollutants in a water body and is beneficial to separation and recovery.

The invention relates to the technical field of biological denitrification, in particular to a nitrogen-doped carbon dot-based microbial electronic control denitrification system and application thereof. The system comprises electron donor microorganisms, electron acceptor microorganisms and nitrogen-doped carbon dots, the nitrogen-doped carbon dots serve as electron mediators outside cells, an efficient extracellular electron transfer network is constructed, and interspecific electron transfer resistance is reduced; meanwhile, the nitrogen-doped carbon dots can regulate and control intracellular electron transport chains and the energy metabolism process, the improvement of the reducing power and the energy level is promoted, and the metabolism mode optimization is realized. By cooperatively regulating and controlling generation, transmission and utilization of electrons under an extreme electron donor limited oligotrophic condition, the system disclosed by the invention can realize efficient denitrification, avoid nitrite accumulation, remarkably inhibit generation of nitrous oxide (N2O), reduce dependence on an external organic carbon source and an electron source, and improve the denitrification efficiency. And a new technical approach is provided for improving the deep denitrification efficiency under the low-carbon condition.

The invention belongs to the field of new materials, and discloses an electrode-based liposome adriamycin entrapment rate electrochemical detection method. According to the detection method, after a bipolar vertical ordered mesoporous silica film (bp-VMSF) is modified on an electrically activated glassy carbon electrode (p-GCE), separation, enrichment and electrochemical detection are integrated, and rapid and sensitive detection of adriamycin can be realized. The glassy carbon electrode is subjected to electrochemical activation pretreatment under the alkaline condition, bp-VMSF stably grows, the surface of the inner layer close to the p-GCE electrode is negatively charged, and the surface of the outer layer away from the electrode is positively charged. The asymmetric charge configuration enhances the adsorption capacity of positively charged adriamycin molecules on an electrode interface through electrostatic enrichment. The p-GCE adsorbs adriamycin and promotes electron transfer, and is combined with the synergistic enrichment effect of the bp-VMSF double-static nano-channel, so that the electrochemical response performance to adriamycin is jointly improved, a method is provided for rapid detection of the liposome adriamycin encapsulation efficiency, and the p-GCE has a good prospect in evaluation of liposome adriamycin preparations.

The invention discloses an aggregation-induced emission photosensitizer as well as a preparation method and application thereof. A D-A-pi-A-D symmetrical structure is adopted, the spatial effect and the conjugation degree are adjusted through a pi bridge, the molar absorption coefficient is increased, and singlet excitons are increased; and furthermore, a pyridine ring with positive charges is used for accelerating electron transfer, the yield of triplet excitons and ROS is improved, compared with a traditional photosensitizer, the ROS efficiency is improved by 2-3 times, the efficient killing capability of the photosensitizer on pathogens can be ensured, and a guarantee is provided for rapid healing of infectious wounds. A pyridine ring with positive charges is introduced into an MTCNPy molecule, and the targeting property of the photosensitizer to pathogens is enhanced by utilizing the electrostatic interaction between the pyridine ring and a bacterial negative charge cell membrane, so that the damage to surrounding healthy tissues is reduced. The preparation process is simple, the cost is low, and the hydrogel has excellent hydrophilicity and biocompatibility so as to be more suitable for the biological environment.

The application discloses a functional carrier filler, a preparation method and application thereof. The functional carrier filler comprises a polyethylene carrier and a functional layer loaded on the surface of the polyethylene carrier; and the functional layer comprises amino graphene. The application fixes the amino graphene on the surface of the polyethylene carrier, so that the surface of the filler is rich in nitrogen functional groups capable of mediating electron transfer, the electron transfer of microorganisms is promoted, the biodegradation of antibiotics is strengthened, the specific surface area of the carrier is improved, and the biofilm is hung, the functional carrier filler is used as a suspended filler of a moving bed biofilm reactor, and is used in a post-denitrification MBBR process after sewage treatment, so that the denitrification rate is improved, the degradation of antibiotics is promoted, the use of carbon sources is reduced, and energy saving and emission reduction are facilitated.

The application discloses a kind of detection pesticide water amitraz integrated organic photoelectrochemical transistor sensor construction method.The application is integrated on the same fluorine-doped tin oxide conductive glass chip by laser etching technology to have the gate, source, drain three electrodes of organic photoelectrochemical transistor.In order to improve the activity and stability of grating material, the method of encapsulating Pd NPs in Cu-MOF and pyrolyzing is adopted, and Pd NPs / p-Cu-MOF is formed.Pyrolysis Cu-MOF with three-dimensional MOF structure as active carrier can load more Pd NPs, and the redox active copper metal elements contained therein will cause electron transfer between carrier and Pd NPs, so as to adjust the electronic state of metal active site and improve its catalytic performance.Schottky junction is formed between Pd NPs and p-Cu-MOF, which promotes the separation of electrons and holes.Pd NPs / p-Cu-MOF is used as photoactive gate material, and amino amitraz aptamer with carboxyl on the material is used as recognition element, so as to realize the OPECT sensing detection of ICP.

The invention relates to the technical field of antibacterial materials, and provides a light-enzyme-heat synergistic antibacterial nano composite material and a preparation method thereof.The preparation method comprises the steps that 1, a copper-based chalcogenide with a plasma resonance effect serves as a structural template, a transition metal oxide intermediate layer and a bismuth oxyhalide epitaxial layer are sequentially constructed on the surface of the copper-based chalcogenide with the plasma resonance effect through a step-by-step continuous solvothermal method, and the copper-based chalcogenide with the plasma resonance effect serves as the structural template; forming a core-shell heterojunction with Z-type energy band matching; (2) pre-assembling a natural enzyme and a monatomic nano-enzyme in a buffer system to form a composite catalytic unit with an electron transfer channel; and (3) by taking the core-shell heterojunction as a polymerization core, under the precise temperature control condition of 0-10 DEG C, initiating active free radical polymerization through an interface, constructing a thermal response polymer shell layer on the surface of the heterojunction, and encapsulating the composite catalytic unit in a functional microdomain of a polymer network in situ. The anti-bacterial fabric can achieve a better synergistic anti-bacterial effect.

The invention belongs to the field of environmental biotechnology and nano material application, and relates to a method for accelerating microorganisms to reduce selenite based on immobilized riboflavin. Aiming at the problems of poor stability, difficulty in recovery, non-repeated use and the like of dissolved riboflavin serving as an electron shuttle, riboflavin is grafted on the surface of a multi-walled carbon nanotube through a covalent binding method, and immobilized riboflavin capable of being recycled is constructed. The material can accelerate extracellular electron transfer of shewanella MR-1, and toxic sodium selenite is efficiently reduced into low-toxicity or non-toxic elemental selenium. Results show that the immobilized riboflavin not only maintains high reduction activity of riboflavin, but also has excellent cyclic utilization performance, still maintains high reduction rate after being repeated for multiple times, and effectively reduces operation cost and resource loss. According to the invention, an efficient, economical and sustainable application scene is provided for a microorganism-electron shuttle combined remediation technology, and a new thought is also provided for application of a functional nano material in an environmental biotechnology.

This application relates to electrolytes and electrochemical devices. The electrolyte comprises an active material and a solvent; the active material comprises a polytert-amine-substituted biphenylquinone compound with an oxidation state as shown in Formula I; in Formula I, each R1 is independently a C2-C10 branched or straight-chain alkyl group, and each R2 is independently a C1-C5 straight-chain alkylene group. The active material in the above electrolyte, including a polytert-amine-substituted biphenylquinone compound with a specific structure, possesses high potential, structural stability, and two-electron transfer characteristics, making it less prone to cross-membrane crosstalk leading to battery capacity decay. When the electrolyte containing this active material is used in electrochemical devices such as flow batteries, long-term stable operation can be achieved. Furthermore, the preparation process of this type of biphenylquinone compound is green, simple, low-cost, and easily industrialized, facilitating widespread use. Formula I

The invention discloses a method for catalytically degrading dye wastewater based on tetrahedrite. The method comprises the steps that tetrahedrite is subjected to mechanical activation and then mixed with peroxymonosulfate, the mixture is added into dye wastewater, the initial pH of a system is adjusted, a catalytic degradation reaction is carried out, tetrahedrite is recovered after the reaction is finished, and tetrahedrite is obtained. The mass molar ratio of tetrahedrite to peroxymonosulfate is (0.33-6): 1g / mmol; the mass ratio of tetrahedrite to organic residues in the dye wastewater is (10-80): 1. According to the method, active sites on the surface of tetrahedrite are used for adsorbing PMS molecules, PMS is activated through electron transfer to generate active free radicals, singlet oxygen in the active free radicals plays a main role, superoxide free radicals and sulfate free radicals play auxiliary roles, and therefore the catalytic activity and the degradation rate of organic matter in dye wastewater are greatly improved.

The invention discloses cysteine mediated Hf / Cu bimetal synergistic self-assembled nano-particles as well as a preparation method and application of the cysteine mediated Hf / Cu bimetal synergistic self-assembled nano-particles. According to the method, cysteine is used as a multifunctional ligand, carboxyl and sulfydryl of cysteine are in bridge connection with metal through coordination, ligand chelation and assembly guiding effects are synchronously exerted, bimetallic ions are induced to be cooperatively self-assembled in an alkaline system (pH is 9-10), and metal cysteine self-assembled nanoparticles with uniform structures are formed through in-situ nucleation and multistage aggregation. According to the method, the ligand function and the bimetallic synergistic effect are accurately matched, the synthesis process is mild (room temperature), the operation is simple and convenient, and the product is excellent in dispersity and stability. Meanwhile, a close coordination structure constructed by cysteine provides a key channel for energy / electron transfer from sensitizing metal to Cu under X-ray irradiation, and lays a structural foundation for subsequent catalytic effect enhancement.

The application discloses a method for treating organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material to activate persulfate, the method is to degrade and treat organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material as a catalyst for activating persulfate, and the nano-confined catalytic material comprises graphite diacetylene nanosheets, and manganese monoxide nanoparticles are confined between the layered structures of the graphite diacetylene nanosheets.The method has the advantages of rich active sites, fast electron transfer and stable structure, so that the catalytic degradation system is not only high in efficiency, but also strong in adaptability, and shows good degradation effect on various organic pollutants, and has the advantages of simple process, convenient operation, high treatment efficiency, good removal effect, strong adaptability, green environmental protection and the like, and has important promoting significance for deep purification of organic pollutant wastewater.

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.

The invention relates to a bioelectrochemical method for efficiently removing fluorine and degrading perfluorinated compounds and application of the bioelectrochemical method, and belongs to the technical field of pollutant treatment. According to the method disclosed by the invention, the sulfate reducing flora (SRB) which takes Clostridiumsensuricto as a main dominant bacterium (the relative abundance is 46.06%) is enriched. The SRB rapidly grows on the surface of the cathode by using electrons provided by the cathode, and ferrous sulfide with conductivity is synthesized on the surface of the cathode, so that the resistance is further reduced, and electron transfer between the SRB and the cathode is promoted. The reacted cathode forms a biological membrane with Tissierella (the relative abundance is 41.32%) as a main dominant bacterium, and compared with an electrochemical method without a biological membrane, the bioelectrochemical method has the advantage that the degradation rate and the defluorination rate of perfluorinated compounds are remarkably improved. In addition, by optimizing the composition of the electrolyte, the degradation rate and the defluorination rate can be further improved, and the defluorination rate can reach 90% or above.

The invention discloses a CSTR-based three-dimensional electrode MEC-fluidized bed reactor for anaerobic fermentation of cow dung and application, and belongs to the technical field of microbial electrochemistry. The reactor comprises a reactor main body, a feed port, a discharge port, a gas outlet and a stirring device, an anode and a cathode are arranged in the reactor main body, a conductive three-dimensional particle electrode filler is filled between the anode and the cathode to form a three-dimensional electrode system, and the anode and the cathode are connected with an external power supply. The three-dimensional electrode system is constructed, so that the reaction specific surface area and the electron transfer efficiency are greatly increased, the stimulation effect of a low-voltage electric field is amplified to the whole reaction space, and the technical bottlenecks of low mass transfer efficiency, low methane yield, easiness in system instability and the like in the traditional cow dung anaerobic digestion are solved. Compared with the traditional anaerobic digestion and two-dimensional microbial electrolysis cell, the two-dimensional microbial electrolysis cell disclosed by the invention can obviously improve the methane yield and the system operation stability, and has an excellent engineering application prospect.

The application belongs to the field of heavy metal water pollution treatment, and relates to a method for rapidly and efficiently oxidizing trivalent arsenic through enhanced electron transfer, which comprises multifunctional biochar preparation and efficient oxidation process design. The method uses sludge as a biochar precursor, obtains multifunctional biochar with strong alkalinity, high specific surface area and super electron conduction through high-temperature pyrolysis, directly introduces oxygen into an As(III) solution, adds the biochar into the system after the aeration is completed, and fully stirs. The method is simple, economically feasible, has extremely high oxidation efficiency, does not require additional chemical reagents, has no reagent residues, and does not require external light or electricity. The non-free radical oxidation path dominated by electron transfer and singlet oxygen is not easily affected by inorganic ions and humic acid in actual water bodies, has strong anti-interference ability, and has a wide application range. The application not only helps to enrich the catalytic oxidation theoretical system, but also greatly improves the practical feasibility of biochar application, and has good environmental and economic benefits.

The invention discloses a method for treating antibiotic wastewater by using a nano confinement iron cluster catalyst. The method comprises the following steps: mixing and pyrolyzing an iron-containing compound and a carbon and nitrogen-containing precursor to prepare the nano confinement iron cluster catalyst, and then, adding the catalyst and an oxidizing agent into antibiotic-containing wastewater to carry out catalytic oxidation reaction. According to the catalyst, a high-activity iron cluster is stabilized by utilizing a nano confinement effect, an oxidizing agent can be efficiently activated, antibiotics are rapidly degraded through a non-free radical path with synergistic singlet oxygen and electron transfer, and the catalyst shows excellent catalytic activity, cycling stability and adaptability to different water qualities. The method is simple in process, mild in condition and environment-friendly, and a new strategy is provided for efficient deep treatment of the antibiotic wastewater.

The application discloses a kind of photocatalytic performance composite materials, the composite material is schulte mineral-titanium dioxide supported biochar, the surface of the biochar is loaded with schulte mineral and titanium dioxide, and the schulte mineral is also connected titanium dioxide.The composite material obtained by the application has excellent structural effect, the surface of the biochar with wrinkle structure is uniformly covered with schulte mineral and TiO2, wherein the schulte mineral is also combined with TiO2 closely.The composite material of the application can effectively enhance the electron transfer efficiency of photoelectronic and hole, increase the catalytic efficiency of catalyst.The composite material of the application has the advantages of short processing time and large capacity of processing.The precursor material for material synthesis is derived from waste biomass resources, FeSO4·7H2O is widely available and low in price, and TiO2 nanoparticles is low in price, so the catalyst in the application has the advantages of low cost, easy popularization and easy operation.

This invention discloses a direct regeneration method for waste lithium iron phosphate cathode materials based on lignin photo-assisted regeneration, as well as the regenerated lithium iron phosphate cathode materials and their applications, belonging to the field of lithium-ion battery technology. The method includes: mixing waste lithium iron phosphate powder, lignin, and a lithium source; adding a solvent and dispersing the mixture to obtain a homogeneous solution; subjecting the homogeneous solution to photothermal synergistic assisted regeneration to obtain a regenerated lithium iron phosphate cathode material slurry; and separating and drying the regenerated lithium iron phosphate cathode material slurry to obtain the regenerated lithium iron phosphate cathode material. This invention innovatively uses lignin derived from biomass waste as a photoresponse and electron transfer participant, achieving simultaneous lithium replenishment and Fe2+ replenishment through a gentle method while ensuring the integrity of the waste lithium iron phosphate cathode material framework. 3+ Price regulation, Fe Li The invention discloses the suppression of antisite defects, removal of impurity phases, and restoration of electrochemical performance. It also discloses the regenerated lithium iron phosphate cathode material prepared by the above method and its applications.