67 results about "Ferriporphyrin" patented technology

The invention provides a ball-milling assisted method for preparing a carbon nitrogen based monatomic iron catalyst. The method comprises the following steps: adopting a one-pot process for wrapping ferriporphyrin in a metallic organic frame hole in a monomolecular form through mechanical ball milling, thereby forming a subject-object structure; forming a nitrogen-doped porous carbon carrier by ametallic organic frame object and keeping an original porous structure, through the high-temperature pyrolytic reaction under the inert gas atmosphere; and forming a monatomic Fe-Nx structure by the ferriporphyrin molecules and fixing in the hole structure. The invention adopts a mechanical ball-milling assisted method for compounding a nanometer compound precursor; only an infinitesimal organic solvent participates in the process; the method is simple and convenient, safe, green and environment-friendly, and suitable for large-scale production; the acquired carbon nitrogen based monatomic iron catalyst has ultrahigh electrocatalytic activity and stability for the oxygen reduction reaction under an alkaline condition, and has a bright market prospect.

A trivalent iron-porphyrin and its derivative-short peptide compound and its synthesizing process are disclosed. Said compound is composed of heme or subheme and short peptide, and is prepared from heme or subheme and amino acid derivative as raw materials and dimethyl formamide as solvent through swelling, removing protecting, coupling, cyclic removing protecting and coupling, coupling heme or subheme and severing. Its advantages are high antioxidizing activity and the activity of peroxidase, high purity and low toxin.

The invention relates to a fireproof material, in particular to fused high-iron ferriporphyrin mullite recombined high-compact brick and a manufacture method thereof. The high-compact brick is characterized by comprising the following materials based on oxides in percentage by weight: 15-30 SiO2, 65-85 Al2O3, 1-3 ZrO and 2-5 Fe2O3, and the phase composition comprises a main phase of ferriporphyrin mullite and a glass phase as a subsidiary crystal phase. Compared with the prior art, the product has higher mechanical strength, compacter structure and flawless internal structure of the product and is burnt by adopting accurate temperature control so that the product has no crack.

The invention relates to a preparation method of an iron molybdenum based catalyst for preparing formaldehyde by methanol oxidation and application. The method is characterized in that macromolecularheterocyclic compounds such as ferriporphyrin molybdenum porphyrin are treated as the raw materials and subjected to nano self-assembling to prepare nano structures with different appearance and sizeand regular and stable structures; the nano structures are thermally treated to obtain a series of iron molybdenum based catalysts for preparing formaldehyde by methanol oxidation; the size and appearance of the regular ferrum-molybdenum nano structures can be changed to realize the control of binary activity center spacing, ratio and distribution of ferrum and molybdenum, and thus the effective contact area of ferrum and molybdenum is increased. With the adoption of the catalyst, methyl alcohol can be efficiently converted under the condition that the pressure is normal pressure, the reactiontemperature is 230-420 DEG C, the volume content of input methyl alcohol is 1-15%, and the gas carrying airspeed is 3000-15000h<-1>. The preparation method is simple to operate, and easy to widely apply; the method is applicable to the fields such as methanol oxidation type formaldehyde preparation and has a good industrial application prospect.

The invention belongs to the technical field of photoelectrochemical sensors, and in particular relates to a high-sensitivity glutathione photoelectrochemical sensor made from iridium oxide-ferriporphyrin-titanium oxide and a preparation method for the sensor. The photoelectrochemical sensor takes an iridium oxide-ferriporphyrin-titanium oxide nano wire array as a working electrode, an Ag / AgCl electrode as a reference electrode and a platinum wire as a counter electrode; a PBS (phosphate buffer solution) with the pH of 7.4 is used as reaction electrolyte; the irradiation light intensity is equal to the sunshine, and the irradiation sectional area is 0.02-0.06cm<2>; the lowest sensitivity is 10nM. The preparation method comprises the steps of preparing a titanium oxide nano wire by adopting a hydrothermal method, bonding upper ferriporphyrin through chemical coupling, finally performing chemical immersion deposition on iridium oxide to prepare the iridium oxide-ferriporphyrin-titanium oxide nano wire array, and then preparing the photoelectrochemical sensor. The raw materials of the photoelectrochemical sensor are readily available; the preparation method is simple, environmentally-friendly, low in cost, high in response speed, large in linear range, high in selectivity and favorable for popularization and application.

The invention relates to a synthetic method for Mu-oxo dinuclear iron porphyrin, which comprises the steps that the porphyrin ligand and the soluble ferrous salt are adopted as the material; the mixed liquid of at least one of C2 to C8 straight chain fatty acids with the volume percentage of 1% to 80% and DMF is adopted as the solvent; the solution with the dissolved porphyrin ligand and soluble ferrous salt is heated and refluxed for 0.5 to 5 min, then is cooled to the ambient temperature; the water of 5 to 50 ml is added; finally the Mu-oxo dinuclear iron porphyrin is obtained after separation and purification. The synthetic method for Mu-oxo dinuclear iron porphyrin has the advantages of direct adoption of acid medium, simple operation, environmental friendliness, short reaction time and easy separation and purification of the product.

The invention provides application of a ferric iron ferriporphyrin compound in preparation of an anti-type-2 diabetes drug and belongs to the technical field of biological pharmacy. The ferric iron ferriporphyrin compound consists of heme and oligopeptide. A carboxyl of the heme is connected with an amino on a peptide chain through an amido bond to achieve connection of the heme and the oligopeptide. Other type-2 diabetes treating or preventing drugs can be applied to the drug preparation. The ferric iron ferriporphyrin compound serves as a peroxidase stimulant, has small molecular weight, can enter cells to effectively remove internal superoxide, super-oxygen ions and free radicals and has the effects of reducing blood sugar, cholesterol and triglycerides activity.

The invention relates to a method for comprehensively utilizing high-iron biological copper leaching liquid. The method comprises the following steps: adding hyposulphite, sulfide or hyposulphite and sulfide into ferriporphyrin biological copper leaching liquid; filtering to acquire copper sulfide sediment after full reaction and precipitation; returning filtrate for bioleaching, or adding alkali into the filtrate to regulate a pH value of between 2 and 10; introducing air or oxygen gas, stirring for reaction, and filtering to obtain iron-removed filtrate and scruff; and returning the filtrate for bioleaching. The copper sulfide sediment is used to reclaim Cu in the bioleaching liquid; Fe3+ is reduced or iron is removed in the leaching liquid and the iron is reclaimed; and water resource is saved, and acid in the leaching liquid is utilized so as to recycle the bioleaching liquid.

The invention relates to a preparation method of a fullerene / tetraphenyl ferriporphyrin self-assembled structure oxygen reduction electrocatalyst. The preparation method comprises the following steps: carrying out condensation reflux on tetraphenyl porphyrin, iron nitrate nonahydrate and a DMF solvent, and carrying out vacuum drying to obtain tetraphenyl ferriporphyrin; preparing a fullerene toluene solution, mixing the fullerene toluene solution with the isopropyl alcohol suspension of tetraphenyl ferriporphyrin, performing standing, carrying out suction filtration, washing, and carrying out vacuum drying to obtain a sample with a self-assembly structure; taking a self-assembled sample and flatly spreading in a magnetic boat, putting the magnetic boat into a quartz tube protected by hydrogen and argon mixed gas, performing a heat preservation reaction at the temperature of 600-800 DEG C, performing natural cooling to the room temperature, and obtaining the fullerene / tetraphenylferriporphyrin self-assembled structure oxygen reduction electrocatalyst. The process for preparing the C60 / FeTPP self-assembly structure through a liquid-liquid interface precipitation method is mature, simple to operate, low in production cost and easy for industrial production. A donor-acceptor system with charge transfer can be effectively constructed, and the half-wave potential of the donor-acceptor system can reach 0.86 V (vs.RHE).

The invention discloses a method for treating methyl orange by utilizing a ferriporphyrin / bismuth tungstate composite photocatalytic material. The methyl orange is treated by adopting the ferriporphyrin / bismuth tungstate composite photocatalytic material and hydrogen peroxide, wherein the ferriporphyrin / bismuth tungstate composite photocatalytic material is prepared from ferriporphyrin and bismuth tungstate; the ferriporphyrin is loaded on the bismuth tungstate. The method provided by the invention has advantages of being simple to operate, short in period, easy in recovery and reutilization, high in degradation efficiency, and the like, not only can be used for quickly and efficiently degrading the methyl orange in acidic and weakly acidic conditions, but also can be used for quickly degrading the methyl orange in a strongly basic condition, is used for effectively and quickly degrading the methyl orange, and has a quite good application prospect in the actual wastewater treatment of the methyl orange.

A preparation method of zinc oxide solid borne tetra (pentafiuorophenyl) ferriporphyrin. The method comprises steps of: carrying out mechanical stirring on newly prepared Zn(OH)2 to disperse in a certain amount of organic solvent; adding organic solvent dissolved tetra (pentafiuorophenyl) ferriporphyrin, maintaining at 65-75DEG C, and stirring for 5-7h; depriving the organic solvent by a reduced pressure distillation; carrying out a pumping filtration and washing; drying a filter cake in 120-170 DEG C vacuum for 5-8h to obtain the zinc oxide solid borne tetra (pentafiuorophenyl) ferriporphyrin. 1.0mg tetra (pentafiuorophenyl) ferriporphyrin equivalent weight of zinc oxide solid borne tetra (pentafiuorophenyl) ferriporphyrin catalyses oxygen to oxidize cyclohexane under a pressure of 0.7MPa, a reaction temperature of 150 DEG C for 4h; and an average cyclohexane conversion rate is 34.2%; an average selectivity is 57.5%; and an average yield of a main oxidized product is 19.7%. Besides, the catalyst can be repeatedly use for more than 10 times.

The invention discloses a composite preparation of extract of bamboo shoots which is used for improving anaemia and a preparation method thereof. The composite preparation is made from the extract of bamboo shoots, iron supplement and other accessory ingredients, wherein, the extract of bamboo shoots is solid, extract liquid or dry powder which is extracted from fresh or dried bamboo shoots by water extraction and alcohol extraction; the iron supplement is ferriporphyrin or heme iron. By adopting the design, the extract of bamboo shoots in the composite preparation of the invention comprising rich glucose, protein and multi elements can stimulate hematopoiesis and expand blood volume and the iron composite preparation thereof has better promotion effect on the recovery of blood loss anemia. By adopting the preparation method of the invention to prepare the extract of bamboo shoot, the process is simple and practical and the various beneficial components in bamboo shoots can be well kept, thus being applicable to commercial production.

The invention relates to a cycloalkane catalytic oxidation method promoted by iron porphyrin. O2 is taken as an oxidant, Co (II) porphyrin and Mn (II) porphyrin are taken as main catalysts, and Fe (II) porphyrin is taken as a cocatalyst to carry out reacting at a temperature of 100-160 DEG C and pressure of 0.8-2.0MPa under a solvent-free condition to realize catalytic oxidation of cycloalkanes. The cycloalkanes mainly comprise cyclopentane, cyclohexane, cycloheptane, cyclooctane and cyclononane, and the corresponding oxidation products mainly comprise cycloalkyl alcohols, cycloalkyl ketones and alkyl diacids. The cycloalkane catalytic oxidation method has the advantages of high selectivity of cyclopentanone, cyclohexanol, cycloheptanone and cyclooctanone, small catalyst consumption and simple operation, and environmental friendliness is achieved by taking clean O2 as the oxidant. The disclosesd cycloalkane catalytic oxidation method promoted by iron porphyrin is a cycloalkane catalytic oxidation method with high product selectivity, simple operation and environmental friendliness.

The invention discloses a preparation method and use of a cadmium sulfide-immobilized tetra(4-carboxyphenyl)ferriporphyrin catalysis material. The preparation method comprises preparing cadmium sulfide through a microwave method, stirring and dispersing the generated cadmium sulfide in waterless ethanol, adding a waterless ethanol solution of tetra(4-carboxyphenyl)ferriporphyrin into the waterless ethanol solution of cadmium sulfide, heating the mixed solution to a temperature of 60-70 DEG C, carrying out stirring for 5-6h, carrying out pressure reduction pumping filtration to obtain filter cake, carrying out Soxhlet extraction on the filter cake through cyclohexane until the filtrate is colorless, and drying the obtained solids at a temperature of 120-140 DEG C for 10-12h to obtain the catalysis material. The preparation method has simple processes, low energy consumption and a low cost, can be used for production of cyclohexanol and cyclohexanone through catalytic oxygen oxidation of cyclohexane and has a conversion rate of 27.3%. The catalysis material has good catalysis effects, basically keeps catalysis efficiency after cyclic catalysis eight times, has a practical application value and is an ideal biomimetic catalyst.

The invention discloses a ferric iron porphyrin and a derivative of the ferric iron porphyrin, an oligopeptide compound, and an application of the ferric iron porphyrin and the derivative of the ferric iron porphyrin, the oligopeptide compound. The ferric iron porphyrin and the derivative of the ferric iron porphyrin, the oligopeptide compound, comprise deuterohemin and oligopeptide, wherein a carboxyl on the deuterohemin and an amino on an oligopeptide peptide chain are connected, so that the oligopeptide is a tripeptide. The ferric iron porphyrin and the derivative of the ferric iron porphyrin, the oligopeptide compound, prolong the service life of a nematode CL4176 of an alzheimer's disease model and slow down the tendency of paralysis of the nematode, therefore, a new direction for the research and development of medicines is provided for treating the alzheimer's disease.

The invention discloses a preparation method of a graphene / ferriporphyrin / gold nanoparticle composite material. The preparation method includes the following steps that oxidized graphene is prepared; 5 mL of a 1.0 mg / mL oxidized graphene water solution and 5 mL of 1.5 mg / mL ferriporphyrin turbid liquid are ultrasonically treated for 20 min at normal temperature, and the oxidized graphene water solution and the ferriporphyrin turbid liquid are mixed and then ultrasonically treated for 10 min; 40 microliters of a 0.025 mol / L HAuCl4 solution is added, ultrasonic mixing is conducted for 10 min, a NaOH solution is added dropwise, the pH value is adjusted to be about 10, and mixed liquid is ultrasonically treated for 10 min; the mixed liquid is magnetically stirred in a 90 DEG C water bath, and a condensation backflow reaction is conducted for 3 h; sublayer sediment is acquired centrifugally at the 12,000 r / min rotating speed; residual ferriporphyrin is washed away through tetrahydrofuran, the sublayer sediment is washed away through deionized water, and centrifugal separation is conducted and repeated multiple times till the pH value of supernatant liquid is about 7; a sublayer product is transferred to a small glass bottle and set to certain constant volume through deionized water; whether the reaction is complete or not is confirmed through color distinguishment and instrument analysis, and the required material is prepared after the reaction is complete.

The invention relates to a preparation method of a composite structure oxygen reduction electrocatalyst for a fuel cell cathode. The preparation method comprises the following steps: condensing and refluxing tetrapyridyl porphyrin, ferric trichloride hexahydrate and a DMF (Dimethyl Formamide) solvent, removing a solution by using rotary evaporation, putting residues into a culture dish, freezing, transferring a solid into a freeze dryer, and drying to obtain tetrapyridyl ferriporphyrin; adding fullerene C70 and tetrapyridyl ferriporphyrin into a toluene solution, and carrying out ultrasonic dispersion to obtain a mixed solution; adding isopropanol into the mixed solution, standing for reaction, then carrying out suction filtration and washing, and carrying out vacuum drying to obtain a composite sample precursor; and uniformly spreading the composite sample precursor in a magnetic boat, putting the magnetic boat into a quartz tube taking hydrogen-argon mixed gas as a protective atmosphere, keeping the temperature at 700-900 DEG C for 2-4 hours, naturally cooling to room temperature, and grinding to obtain the composite structure oxygen reduction electrocatalyst. The process is simple to operate, the selected raw materials are low in production cost, and industrial production is easy. The obtained C70 / FeTPPy composite structure is expected to become a substitute of a noble metal catalyst. And the half-wave potential can reach 0.87 V (vs.RHE).

The invention discloses a method for preparing cyclic carbonate by transforming carbon dioxide with an iron-based catalyst. The carbon dioxide and epoxide are taken as raw materials, a conjugated ferriporphyrin microporous polymer material is taken as a multiphase catalyst, and tetra-n-butylammonium bromide is taken as a co-catalyst to realize high-efficiency green catalytic synthesis of the cyclic carbonate under a normal-temperature, normal-pressure and solvent-free condition. The method has the major advantages of simple preparation method, low cost, high catalytic activity, stable structural performance, easiness in recycling and reusability of the catalyst, mild reaction conditions, high rate and safety in operation, and is suitable for large-scale industrial production.

The invention discloses a polyacrylonitrile fiber-hemin biomimetic catalyst and a preparation method thereof. The biomimetic catalyst is in a shape of fibers and is prepared after 2-aminooimidazole modified polyacrylonitrile fibers and natural ferriporphyrin compound hemin react. The preparation method comprises steps as follows: firstly, polyacrylonitrile fibers are subjected to a modification reaction by the aid of 2-aminooimidazole under the conditions that the pH is 9.5 and the temperature is 95 DEG C, an active group containing an imidazole ring structure is obtained, the obtained modified acrylic fibers and a DMF solution of hemin are subjected to a coordination reaction, and the polyacrylonitrile fiber-hemin biomimetic catalyst simulating the structure of horseradish peroxidase is obtained. The biomimetic catalyst is applicable to an oxidation degradation reaction of dye and other organic pollutants in water; compared with treated hemin, the polyacrylonitrile fiber-hemin biomimetic catalyst has the advantages that the catalysis activity of the catalyst is remarkably enhanced due to introduction of a polyacrylonitrile fiber carrier, and the pH adaptability and the use stability of the catalyst are greatly improved.

The invention discloses nitric oxide reductase analogs and a preparation method thereof. Chemical names of the analogs comprise ferriporphyrin NO complexes and ferriporphyrin chlorides, bound ferriporphyrin NO complexes comprising C2-C5 alkyl are 1-FeNO to 4-FeNO, and corresponding precursor compounds, i.e., ferriporphyrin chlorides are 1-FeCl to 4-FeCl. The preparation method comprises the stepsof applying alkyl bridged bis(5-tert-butyl salicylaldehyde), synthesizing the ferriporphyrin chlorides by using a metal template method, carrying out decomposition by using nitrous acid to produce NO,and subjecting the NO to axial substitution, thereby obtaining the ferriporphyrin NO complexes. According to the method, by using the characteristic that a metal electron structure is regulated and controlled through porphyrin ring deformation, the interconversion of axial NO ligands to nucleophilic from electrophilic is achieved. The analogs are of nonplanar-structure continuous variation whichare similar to variation of structures and functions of nitric oxide reductase, the synthesis steps are few, the raw materials are economical and readily available, separation and purification costs are relatively low, and thus, the analogs are relatively ideal analogs of the nitric oxide reductase.

The invention discloses a long-time chemiluminescence system based on ferriporphyrin metal-organic framework material / glucose oxidase. The chemiluminiscence system takes a ferriporphyrin metal-organicframework material / glucose oxidase compound as a catalyst of chemiluminiscence reaction and luminol and glucose as chemiluminiscence substrates, and generates long-time chemiluminiscence by utilizinglocal cascade catalysis of the ferriporphyrin metal-organic framework material and the glucose oxidase. The ferriporphyrin metal-organic framework material is prepared by taking Zr < 4 + > as a metalcenter and ferriporphyrin as a ligand through a hydrothermal method, and has relatively high peroxidase activity and stability; the glucose oxidase is modified on the surface of the ferriporphyrin metal-organic framework material through electrostatic adsorption, and the ferriporphyrin metal-organic framework material / glucose oxidase compound is prepared. A mixed solution system containing the ferriporphyrin metal-organic framework material / glucose oxidase compound, the luminol and the glucose can generate 7.5-hour stable high-intensity chemiluminescence. The chemiluminiscence system can generate long-time stable high-intensity chemiluminiscence under physiological conditions, and has a good application prospect in the aspects of biological detection and imaging.

The invention relates to a bamboo shoot extract with a function of improving anemia, a compound preparation thereof and a preparation method thereof. The compound preparation is prepared from the bamboo shoot extract, a ferrous supplementary and other aids, wherein the bamboo shoot extract is a solid matter, extracting solution or dry powder, and is obtained by the water extraction and alcohol precipitation on fresh bamboo shoots or dried bamboo shoots; and the ferrous supplementary is ferriporphyrin or protoheme iron. Due to the adoption of the design, the bamboo shoot extract in the compound preparation has abundant glucose, protein and various elements, and can stimulate hematopoiesis and enlarge blood volume, and a compound iron preparation has the better promotion effect on the rehabilitation of blood loss anemia. The method for preparing the bamboo shoot extract has a simple and practical process and is suitable for industrial production, and various beneficial ingredients in bamboo shoot raw materials can be better reserved.

The invention provides a nano-enzyme compounded by copper nanoparticles and ferriporphyrin nanosheets and a preparation method thereof, and can solve the problem that in the prior art, preparation of a mimic enzyme composite nano-material is limited to precious metal. According to the technical scheme, the ferriporphyrin nano-enzyme comprises a composite nano-enzyme formed by in-situ growth of non-noble metal copper nano-particles on the surface of a ferriporphyrin nano-sheet, wherein the nano-enzyme has horseradish peroxidase-like activity. The prepared nano-enzyme is used for realizing degradation of Congo red dye and detection of glucose. The method can be applied to the aspects of mimic enzyme catalysis and quantitative analysis in the technical fields of chemical industry, environment and biology.

The invention provides a hydrogen peroxide detection method based on ferriporphyrin two-dimensional MOFs enzyme-like catalysis, and belongs to the field of chemical and environmental detection. According to the method, copper-tetracarboxyl phenyl ferriporphyrin two-dimensional MOFs (Cu-FeTCPP 2DMOFs) are used as a catalyst, and 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) is used as a color developing agent. The Cu-FeTCPP 2DMOFs contain a structure-FeTCPP similar to a prothetic group of peroxidase so that an ultrathin two-dimensional structure has a large specific surface area and good affinity with hydrogen peroxide and TMB, high horseradish peroxidase-like catalytic activity is possessed, and H2O2 is catalyzed to oxidize TMB into a blue color development product. According to a colorimetric detection method, a linear detection range of H2O2 is 3-1000 muM, a detection limit can reach 2.08 muM, and the method has a considerable application prospect in an aspect of H2O2 detection.

The invention discloses a method for preparing cyclic carbonate by an iron-based catalyst. Carbon dioxide and epoxide serve as raw materials, a conjugate ferriporphyrin dipyridyl / conjugate ferriporphyrin dipyrrole microporous polymer material serves as a heterogeneous catalyst, tetra-n-butylammonium bromide serves as a co-catalyst, and efficient green catalytic synthesis of cyclic carbonate is realized at normal temperature and pressure in a solvent-free manner. The method mainly has the advantages that the catalyst is simple in preparation method, low in cost, high in catalytic activity, stable in structural performance, easy to recycle, reusable, mild in reaction condition, high in speed, safe to operate and applicable to large-scale industrial production.

The invention relates to a glass refining agent and a preparation method thereof, and belongs to the field of the glass refining agents. Catalytic oxygen evolution is performed through catalyst additive release by gas; meanwhile, the assembly is formed with ferriporphyrin; the catalysis active center sites are increased; the catalysis process is promoted; water steam and glass melt take reaction at the molten high temperature; the viscosity and surface tension of the glass are reduced; the bubble discharge is promoted; a branched structure is formed through an extrusion foam discharge agent; the flowability of a refining agent is improved; substances with elastic structures and good mechanical performance form elastic deformation, so that the extrusion discharging of bubbles is further promoted; the glass crystallization is induced through light transmission nucleation additives; the light effect of the glass is improved, so that the transparency of the glass is improved; auxiliary additives are added in an auxiliary way to realize the coordination participation into a glass silica network structure; the softening point of the glass is improved; the better melting is realized. Theglass refining agent and the preparation method solve the problems that by using the existing glass refining agent, micro bubbles liable to occur on the glass plate surface, and flaws are caused.

The invention relates to the technical field of electromagnetic wave absorbing materials, in particular to a preparation method of an iron-based composite wave-absorbing material. The reparation method comprises the following steps: S101: preparing a porous matrix material doped with ferriporphyrin; s102, preparing a mixed solution containing zinc-doped carbon quantum dots and magnetized zero-valent iron; s103, enabling the mixed solution to be fully infiltrated into the porous matrix material; s104, enabling the mixed solution to be subjected to electrophoresis in the porous matrix material through an electrophoresis device; and S105, drying the porous matrix material to obtain the iron-based composite wave-absorbing material. The zinc-doped carbon quantum dots and the magnetized zero-valent iron are compounded into the porous matrix material doped with ferriporphyrin, concentration gradient distribution of synergistic components is achieved through electrophoresis, the iron-based composite wave-absorbing material is prepared, and the material has various complex interfaces and concentration gradients so that the material has excellent wave-absorbing performance.

The invention discloses an iron porphyrin / bismuth tungstate composite photocatalytic material and a preparation method thereof. The composite photocatalytic material includes iron porphyrin and bismuth tungstate, wherein the iron porphyrin is loaded on the bismuth tungstate. The preparation method includes dissolving iron porphyrin in a mixed solution of acetonitrile and dimethyl sulfoxide to obtain an iron porphyrin solution, and dissolving bismuth tungstate into the iron porphyrin solution to obtain a mixed solution of bismuth tungstate and iron porphyrin. , adjust the pH value of the mixed solution of bismuth tungstate and iron porphyrin, let it stand, and prepare an iron porphyrin / bismuth tungstate composite photocatalytic material. The composite photocatalytic material of the present invention has the advantages of good dispersion, strong stability, and easy recycling and reuse. It is an environmentally friendly composite photocatalytic material with excellent photocatalytic performance that can be widely used. Its preparation method has reaction conditions. It has the advantages of mildness, simple process, and environmental protection, and can be used for large-scale preparation.

The trivalent iron porphyrin and its derivative-short peptide compound and its synthesis method belong to the field of biological technology. The composition of the compound includes heme or sub-heme and short peptide; the carboxyl group on the heme or sub-heme is connected with the amino group on the peptide chain by an amide bond; the peptide chain contains histidine residues, and the length of the peptide chain is 1-15 amino acids. The preparation method is: use heme or sub-heme and amino acid derivatives as raw materials, and use dimethylformamide as a solvent. The process includes swelling-deprotection-coupling-deprotection-coupling cycle-heme or sub-heme Conjugation - cleavage. Ferric porphyrin and its derivatives-short peptide compounds have good antioxidant activity in the in vitro system, subcellular level, and tissue organ level, and are a new class of compounds with peroxidase activity. The product has high purity and low toxicity; it has good stability to hydrogen peroxide; it is easier to be absorbed by the body and has high bioavailability.

The invention discloses an iron porphyrin-flaky bismuth tungstate two-dimensional composite material and a preparation method thereof, wherein the iron porphyrin-flaky bismuth tungstate two-dimensional composite material comprises iron porphyrin and flaky bismuth tungstate, and the iron porphyrin is immobilized on the surface of the flaky bismuth tungstate. The preparation method comprises: preparing a mixed solution of bismuth nitrate and sodium tungstate; preparing a precursor mixed solution; and carrying out a hydrothermal reaction on the precursor mixed solution. According to the present invention, the iron porphyrin-flaky bismuth tungstate two-dimensional composite material has advantages of good dispersibility, strong stability, easy recovery and reuse, excellent photocatalytic performance, environmental friendliness and the like, can efficiently degrade pollutants (such as antibiotics) in environment without the adding of H2O2, has good photocatalytic degradation effect, can significantly reduce the treatment cost, and has good application prospects and application range in the field of photocatalysis; and the preparation method has advantages of mild reaction conditions, simple process flow and environmental protection.