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33 results about "Copper alginate" patented technology
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Antibacterial gauze or bandage and preparation method thereof
InactiveCN105012999AImprove antibacterial propertiesAdhesive dressingsAlginate artificial filamentsFiberCopper alginate
The invention discloses antibacterial gauze or bandage and its preparation method. The antibacterial gauze or bandage is prepared by blending of 80-99 wt% of medical absorbent cotton and 1-20 wt% of copper alginate fiber. The prepared gauze or bandage has good biosecurity and high antibacterial rate, is broad-spectrum antibacterial and environmentally friendly, has good compliance and is low-cost. In addition, antibacterial rate of the gauze or bandage is greater than 99%.
Owner:厦门百美特生物材料科技有限公司
Preparation method of high-catalytic efficiency and recyclable photocatalyst
InactiveCN102728409AEasy to useEasy accessOrganic-compounds/hydrides/coordination-complexes catalystsHazardous substancePotassium hydroxide
The invention relates to a preparation method of a photocatalyst, in particular to a preparation method of a high-catalytic efficiency and recyclable photocatalyst, aiming at solving the problem that the existing catalyst is difficult to recycle. The preparation method of the high-catalytic efficiency and recyclable photocatalyst comprises the following steps of: adding sodium alginate into carbon nano-particle suspending liquid, and drastically stirring to obtain mixed liquid; evenly spraying copper chloride or acid copper solution on the surface of the mixed liquid and reacting to form copper alginate gel with a through hole structure; soaking the copper alginate gel in sodium hydroxide or potassium hydroxide solution and re-spraying hydroxylamine hydrochloride solution or sodium borohydride solution to obtain a composite structure that the surfaces of the carbon nano-particles are modified by cuprous oxide nanocrystalline grafted onto the inner wall of the through hole structure, namely the photocatalyst. The photocatalyst prepared by the method is recyclable, is convenient to recover, and can be widely used for converting the solar energy into the chemical energy, degrading orconverting the harmful substances in the environment, preparing the hydrogen energy, etc.
Owner:ZHONGBEI UNIV
High-proportion copper alginate fiber blended yarn and preparation method
InactiveCN106868668AHigh spinnable countLow production costTextile treatment by spraying/projectingYarnYarnCopper alginate
The invention relates to a high-proportion copper alginate fiber blended yarn and a preparation method, and belongs to the technical field of the yarn manufacturing process. The blended yarn is formed by blending, by mass, 30-60% of copper alginate fibers, 20-49% of wool, 1-8 parts of conductive fibers and 0-40% of acrylic fibers. The method is used for preparing the copper alginate fiber blended yarn, and the blended yarn has the advantages of being short in technical process, low in processing cost, excellent in anti-static property and antibacterial property and the like.
Owner:SHAOXING UNIVERSITY
Laccase-nanoflower-gamma-Fe2O3 copper alginate gel beads and preparation method and application thereof
ActiveCN111676213APromote degradationPromote conversionWater contaminantsOxidoreductasesPolycyclic aromatic hydrocarbonPhosphate
The invention discloses laccase-nanoflower-gamma-Fe2O3 copper alginate gel beads and a preparation method and application thereof. The gel beads are obtained through the steps of stirring sodium alginate, gamma-Fe2O3 ferrofluid colloid solution and laccase-cupric phosphate hybridization nanoflowers in water, and dropwise adding a copper chloride solution at constant speed. The mass ratio of the sodium alginate to the gamma-Fe2O3 ferrofluid colloid solution to the laccase-cupric phosphate hybridization nanoflowers is 3000: (30000-70000):(5-50); in the gamma-Fe2O3 ferrofluid colloid solution, the particle diameter of gamma-Fe2O3 particles is 10nm, and the diameters of the laccase-cupric phosphate hybridization nanoflowers are 15-20[mu]m. The laccase-nanoflower-gamma-Fe2O3 copper alginate gelbeads show higher catalyzing efficiency than free enzymes in reaction of catalyzing degradation of chlorophenol, and oxidizing polycyclic aromatic hydrocarbon and phenolic compounds, and show favorable reusability and storage stability.
Owner:JILIN AGRICULTURAL UNIV
Anti-microbial fiber cloth
InactiveCN106192156AStable structureImprove breathabilityConjugated cellulose/protein artificial filamentsWoven fabricsPolyamideEngineering
The invention discloses anti-microbial fiber cloth woven by warp filaments and weft filaments. The warp filaments are in the statures of signal filaments and the weft filaments are in the statures of composite filaments. The weft filaments are formed by staggering and intertwining of bamboo fiber filaments and anti-microbial fiber filaments in the radius ratio of 1 to 2. The anti-microbial fiber filaments are formed by following raw material including 23-42 parts by weight of apocynum fibres, 20-27 parts by weight of kawo kawo fibers, 10-26 parts by weight of lignin, 16-31 parts by weight of copper alginate fibers, 10-15 parts by weight of ramie fibers, 18-35 parts by weight of polyamide, 3-9 parts by weight of modified melamine formaldehyde resin, 10-16 parts by weight of anti-mildew cellulosic fibers, 3-9 parts by weight of polyurethane, 2-6 parts by weight of dispersing agents and 1.2-1.6 parts by weight of stabilizers. The anti-microbial fiber cloth has following beneficial effects: the anti-microbial fiber cloth has a stable structure and has great breathable performance, and anti-bacteria performance and is great in strength, feels soft; raw material is safe and eco-friendly without side effects to human bodies; and the cloth is long in service lifetime and added with polyamide such that anti-bacteria performance of the anti-microbial fiber cloth is lasting.
Owner:明光市瑞洁日用品有限公司
Preparation method for high-strength copper alginate aerosol catalyst
InactiveCN106955741AHigh reactivityImprove conversion rateOrganic chemistryOrganic compound preparationFreeze-dryingMechanical property
The invention discloses a preparation method for a high-strength copper alginate aerosol catalyst. An organic polymer is introduced for forming a double-network structure, so that the mechanical property of the metallic alginate aerosol is enhanced. Reinforcement, namely, graphene, is adopted for further enhancing the mechanical strength of the double-network structure aerosol. The preparation method comprises the following steps: adding graphene into distilled water; ultrasonically treating till uniformly dispersing; adding organic reinforcements, namely, polyacrylamide and sodium alginate; adding water and mechanically stirring till being uniform and sticky; dripping the acquired sticky solution into a mold; immersing into a metal cooper solution and thermostatically reacting; and performing freeze drying, thereby acquiring the end product. The mechanical property of the copper alginate aerosol catalyst prepared according to the invention is greatly promoted.
Owner:CHANGCHUN UNIV OF TECH
Application of copper alginate
InactiveCN106336952AWide variety of sourcesLow priceFatty acid esterificationOrganic-compounds/hydrides/coordination-complexes catalystsBiopolymerCopper alginate
The invention belongs to the technical field of copper alginate application and particularly relates to application of copper alginate in various fatty acid esterification reactions. The copper alginate serves as a catalyst to be applied to various fatty acid esterification reactions. The catalyst copper alginate uses biopolymer sodium alginate as a raw material, the sodium alginate is wide in source, low in price, non-toxic and environmentally friendly a preparation process is simple, the synthesis cost is lower, the reaction activity is higher, no corrosion is produced on a production device in the using process, and no adverse effect is produced on the environment. The catalyst copper alginate can also show better esterification catalyzing activity under the conditions of mild catalytic conditions and shorter reaction time. The catalyst copper alginate is used for esterification reaction, the demanded quantity is small, the operation of separating products and copper alginate is simple and convenient, and the copper alginate can be recycled and is suitable for industrial popularization and usage, and the costs are reduced.
Owner:ANSHUN UNIV
Antibacterial yarn
The invention discloses an antibacterial yarn, which is characterized by being prepared from 1 to 10 weight percent of metal copper fiber, 1 to 10 weight percent of copper alginate fiber and 80 to 98weight percent of ordinary fiber. The fiber is prepared by a blending process. The obtained antibacterial yarn has the efficient and durable antibacterial effects; the bacteriostasis rates on escherichia coli, staphylococcus aureus and candida albicans after the water washing by many times is all higher than 99.9 percent. In addition, good anti-static performance is realized.
Owner:江苏银兆新材料科技有限公司
Processing method of cotton and copper alginate blended yarn
The invention relates to a processing method of cotton and copper alginate blended yarn and belongs to the technical field of yarn manufacturing processes. Copper alginate fiber and cotton are pretreated respectively, and after the copper alginate fiber and the cotton are mixed evenly, mixed fiber is sequentially subjected to opening picking, carding, combing, drawing, roving and spinning, wherein the opening picking process comprises the steps that the mixed fiber sequentially passes through a bale plucker, a mixing opener, a roller card wire opener, a vibration cotton feeding box and a single beater scutcher to be treated, the roller card wire opener and all beater screens of the single beater scutcher are sealed; a half holding and beating gauge is adopted, and in the carding process, controllable half-hold licker-in opening is adopted; needle teeth small in working angle and low in density are adopted in carding machine card clothing. When applied to processing of the copper alginate fiber and cotton mixed yarn, the method has the advantages that the mixed yarn is less in hairiness, high in strength, less in nep, good in yarn levelness and the like.
Owner:浙江吉麻良丝新材料股份有限公司 +2
Method for treatment of water pollutants by protein mediator based immobilized laccase
ActiveCN105836896AHigh catalytic activityShort reaction timeWater contaminantsBiological water/sewage treatmentPollutantCopper alginate
The invention relates to a preparation method of immobilized laccase for treatment of organic pollutants in water in the field of biological environment governance. Laccase and hemoglobin serving as a mediator are added into a sodium alginate solution, the substances are mixed, then the mixed solution is dripped into a CuSO4 solution to carry out reaction so as to obtain precipitate, i.e. immobilized laccase. According to the invention, hemoglobin is used as a protein mediator and is immobilized on a copper alginate carrier together with laccase to improve the activity of laccase, at the same time the level for treatment of organic pollutants in water is also enhanced. With a treatment concentration of 0.1mM for pollutants in a water sample, the method can be applied to treatment of water samples in polluted areas.
Owner:SHANGHAI JIAO TONG UNIV
Nanoparticles of cadmium alginate, lead alginate and copper alginate, and preparation method thereof, and applications of nanoparticles of cadmium alginate, lead alginate and copper alginate in preparation of electrochemical immunoassay probes
InactiveCN105504314AAchieving Simultaneous DetectionLow detection limitMaterial analysisCross-linkNanoparticle
The present invention discloses nanoparticles of cadmium alginate, lead alginate and copper alginate, and a preparation method thereof, and applications of the nanoparticles of the cadmium alginate, the lead alginate and the copper alginate in preparation of electrochemical immunoassay probes. According to the present invention, cadmium ions, lead ions or copper ions are respectively subjected to cross-linking with sodium alginate to prepare the nano-scale nanoparticles of the cadmium alginate, the lead alginate and the copper alginate and generate distinguished electrochemical signals; the preparation method is characterized in that the preparation conditions are mild, and the product can be directly used for labeling without additional signal substances; with the electrochemical immunosensor prepared by using the nanoparticles of the cadmium alginate, the lead alginate and the copper alginate to label different antibodies, the simultaneous detection on three targets without partition can be achieved; and the nanoparticle immunoassay probes of the cadmium alginate, the lead alginate and the copper alginate, and the electrochemical immunosensor prepared from the nanoparticles of the cadmium alginate, the lead alginate and the copper alginate have wide application prospects in the immune sensing field.
Owner:CAPITAL NORMAL UNIVERSITY
Filtering material for mask filtering layer and mask
ActiveCN105056625AImprove filtering effectEasy to adsorb and filterBiocideOther chemical processesActivated carbonFiber
The invention discloses a filtering material for a mask filtering layer and a mask. The filtering material is prepared through solidification of copper alginate fiber added with negative ion powder or copper alginate fiber added with negative ion powder and activated carbon with a wet spinning technology and a two-step method, wherein a first-step solidification liquid is a CaCl2 solution with the concentration of 3.2%-4.5% by mass at the temperature of 55 DEG C; a second-step solidification liquid is a CuCl2 solution with the concentration of 3%-5% by mass. According to the mask prepared from the filtering material for the mask filtering layer, high through-flow is realized, so that expiration and inspiration resistance is low, and the mask has better filtering effect on particles smaller than 0.5 mu m and a good antibacterial effect, is lower in cost and is particularly applicable to the haze weather condition.
Owner:厦门百美特生物材料科技有限公司
Preparation method of alginate hydrogel antibacterial filter membrane containing copper phosphate
ActiveCN110773008AStrong anti-pollutionEasy to prepareSemi-permeable membranesMembranesPhosphateAntibacterial property
The invention discloses a preparation method of an alginate hydrogel antibacterial filter membrane containing copper phosphate. The method comprises the following steps: fully mixing and dissolving soluble phosphate and sodium alginate to obtain a membrane casting solution; scraping the membrane casting solution to form a membrane, soaking the membrane in an aqueous soluble calcium salt solution for sufficient crosslinking, and generating calcium phosphate in situ in the hydrogel while generating a calcium alginate hydrogel; and soaking the obtained calcium alginate hydrogel membrane containing calcium phosphate in an aqueous solution of a mixture of diluted hydrochloric acid and a soluble copper salt, reacting the diluted hydrochloric acid with calcium phosphate to release phosphate radicals, reacting the phosphate radicals with copper ions to generate copper phosphate, and capturing parts of calcium ions in calcium alginate by the copper ions to generate copper alginate in order to obtain the alginate hydrogel antibacterial filter membrane containing copper phosphate. Phosphate generated in situ in the hydrogel improves the mechanical properties of the alginate hydrogel, and thecopper phosphate makes the alginate hydrogel have good antibacterial properties.
Owner:中科瑞阳膜技术(北京)有限公司
Preparation method of copper alginate loaded laccase and mediator ABTS composite biocatalyst
PendingCN112877320AHigh catalytic activityExtended service lifeWater contaminantsOxidoreductasesPtru catalystCongo red
The invention discloses a preparation method of a composite biocatalyst system composed of copper alginate loaded laccase and a mediator ABTS. A natural biomass material sodium alginate is adopted as a carrier, and free laccase protein molecules and mediator ABTS molecules are respectively immobilized by utilizing the coordination complexing action of a metal copper element, so that the composite biological enzyme catalyst is formed. After being immobilized, the macromolecular bio-enzyme and the mediator ABTS can be recycled, the service life is long, more than 80% of reactive brilliant blue KN-R degradation rate and more than 75% of Congo red degradation rate can still be maintained after 5 times of repetition, the production cost is reduced, and the method has a good industrial application prospect. The preparation method has the advantages of simple preparation process, mild reaction, easily available raw materials, low price and no pollution to the environment.
Owner:WUHAN TEXTILE UNIV
Preparation method of copper alginate for low molecular weight feed
InactiveCN108669311ASolve complexitySolve the product with large molecular weightAccessory food factorsPeristaltic pumpEnvironmental resistance
The invention discloses a preparation method of copper alginate for a low molecular weight feed, and belongs to the technical field of preparation of feed additives. The preparation method comprises the following steps: preparing a sodium alginate solution and a copper sulfate solution, slowly dropwise adding the sodium alginate solution into the ultrasonically dispersed copper sulfate solution byusing a peristaltic pump, carrying out a gelation reaction, carrying out spray drying to obtain copper alginate particles, and carrying out gamma-ray irradiation to degrade and modify parts of largemolecular weight copper alginate in order to reduce the molecular weight and finally obtain the copper alginate for the low molecular weight feed. The preparation method has the advantages of simple preparation process, simplicity in operation, no pollution in the irradiation process, pure reaction system, avoiding of the introduction of excessive reactants, no initiator, greenness, environmentalprotection, uniform reaction conditions, solving of the problems of complexity, high molecular weight of the product and difficult absorption by bodies of the product in existing production technologies of copper alginate, and easiness in realization of large-scale promotion and application.
Owner:扬州中微生物技术有限公司
Use of copper alginate
InactiveCN102627532BSimple preparation processLower synthesis costOrganic chemistryOrganic compound preparationBiopolymerPhenol
The invention discloses a use of copper alginate. In the invention, copper alginate is used as a catalyst for preparation of hydroquinone and catechol by phenol hydroxylation. The copper alginate as a catalyst is prepared from a raw material of a biopolymer sodium alginate which has wide sources and a low price and is nontoxic and environmentally friendly. The copper alginate as a catalyst has simple preparation processes, a low synthesis cost, high reaction activity, good selectivity, no pollution in use of production equipment and no harmful effect on the environment, and is an environmentally-friendly catalyst. The copper alginate as a catalyst has a high phenol conversion rate of 62.4% and high benzenediol selectivity of 99.6%, is suitable for industrialized popularization and can be recycled.
Owner:CHANGCHUN UNIV OF TECH
Preparation method of silicon dioxide and graphene oxide reinforced copper alginate aerosol catalyst
InactiveCN109433264ASimple preparation processHigh reactivityOrganic chemistryOrganic compound preparationGraphite oxideCopper alginate
The invention discloses a preparation method of a silicon dioxide and graphene oxide reinforced copper alginate aerosol catalyst. By introducing inorganic reinforcement silicon dioxide and graphene oxide, the mechanical performance of metal copper alginate aerosol is improved. The preparation method of the silicon dioxide and graphene oxide reinforced copper alginate aerosol catalyst comprises thesteps of adding the graphene oxide to distilled water; performing ultrasonic treatment on an obtained mixture till the mixture is uniformly dispersed; adding sodium alginate to the dispersed mixtureand introducing silicon dioxide into the mixture; adding water to the mixture to mechanically stir the mixture to a uniform viscous stage; dripping the obtained viscous liquid into a mold; immerging the mold into a metal copper solution to perform constant temperature reaction; freezing and drying a reaction product to obtain a finished product. The preparation method of the silicon dioxide and graphene oxide reinforced copper alginate aerosol catalyst, disclosed by the invention, has the advantage that the mechanical performance of the copper alginate aerosol catalyst is greatly improved.
Owner:CHANGCHUN UNIV OF TECH
A kind of non-woven fabric for mask base material and preparation method thereof
InactiveCN103637926BKeep the white lookRetain antimicrobial propertiesCosmetic preparationsToilet preparationsAntibiotic resistanceBiocompatibility Testing
The invention discloses a nonwoven fabric for a mask base material and a preparation method thereof. The nonwoven fabric for a mask base material is composed of 60-90wt% nano-silver-containing alginate fibers and 10-40wt% copper alginate fibers. The nano-silver-containing alginic acid fiber is produced by blending and spinning sodium alginate and nano-silver-containing zirconium phosphate nano-compounds, and the nano-silver ions are contained in the zirconium phosphate nano-particles. The invention has the characteristics of white appearance, good antibacterial property, high hygroscopicity, high moisture retention, high air permeability, good biocompatibility, simple production process and low cost.
Owner:福建鑫华股份有限公司
A kind of processing method of cotton and copper alginate blended yarn
The invention relates to a processing method of cotton and copper alginate blended yarn and belongs to the technical field of yarn manufacturing processes. Copper alginate fiber and cotton are pretreated respectively, and after the copper alginate fiber and the cotton are mixed evenly, mixed fiber is sequentially subjected to opening picking, carding, combing, drawing, roving and spinning, wherein the opening picking process comprises the steps that the mixed fiber sequentially passes through a bale plucker, a mixing opener, a roller card wire opener, a vibration cotton feeding box and a single beater scutcher to be treated, the roller card wire opener and all beater screens of the single beater scutcher are sealed; a half holding and beating gauge is adopted, and in the carding process, controllable half-hold licker-in opening is adopted; needle teeth small in working angle and low in density are adopted in carding machine card clothing. When applied to processing of the copper alginate fiber and cotton mixed yarn, the method has the advantages that the mixed yarn is less in hairiness, high in strength, less in nep, good in yarn levelness and the like.
Owner:浙江吉麻良丝新材料股份有限公司 +2
Cadmium alginate, lead alginate and copper alginate nanoparticles and their preparation method and application in the preparation of electrochemical immunoprobes
InactiveCN105504314BAchieving Simultaneous DetectionLow detection limitMaterial analysisNanoparticlePhysical chemistry
The invention discloses cadmium alginate, lead alginate and copper alginate nanoparticles, a preparation method thereof and an application in preparation of electrochemical immune probes. The invention prepares nanoscale cadmium alginate, lead alginate and copper alginate spherical particles by respectively cross-linking sodium alginate with cadmium ions, lead ions or copper ions in microemulsion, and can generate distinguishable electrochemical signals. The preparation method of the invention is characterized by mild preparation conditions and can be directly used for labeling without adding signal substances. The electrochemical immunosensor prepared by using the cadmium alginate, lead alginate and copper alginate nanoparticles to label different antibodies can realize the simultaneous detection of three targets without partitioning. The cadmium alginate, lead alginate and copper alginate nano particle immunoprobe and the electrochemical immunosensor prepared therefrom will have broad application prospects in the field of immunosensing.
Owner:CAPITAL NORMAL UNIVERSITY
A copper algae boiled algae mud mask and preparation method thereof
ActiveCN103720619BGood moisturizing effectPrevent agingCosmetic preparationsAntipyreticFreeze-dryingAntioxidant
The invention belonging to the field of cosmetics, and particularly relates to a Sargassum horneri boiled alga clay mask and a preparation method thereof. The preparation method comprises the following steps: removing impurities from Sargassum horneri, washing, drying until the algae become embrittled, stamping the dried Sargassum horneri to granules, immersing in alcohol for 8-20 hours, filtering, boiling for 15-120 minutes, filtering to obtain alga clay, carrying out centrifugal dehydration and freeze-drying, and grinding into powder; weighing raw materials according to the formula; adding deionized water into the weighed Sargassum horneri powder, and stirring to swell; and dissolving a moisturizer, an antioxidant, a metallic ion chelator, a preservative, a whitener, a deodorizer, a sebum inhibitor, a cutin dissolving agent, a bacteriostatic agent, an antiallergic agent and a nutrient additive in deionized water, adding the Sargassum horneri clay, continuing stirring while adding a tackifying agent and deionized water, and stirring uniformly. The mask has the advantages of favorable moisturizing property, low cost and low price, obviously improves the skin color, moisturizes the skin, and prevents the skin from aging.
Owner:SHANGHAI OCEAN UNIV
A laccase-nanoflower-γ-fe 2 o 3 Copper alginate gel beads and preparation method and use thereof
ActiveCN111676213BPromote degradationPromote conversionWater contaminantsOxidoreductasesPhosphatePhosphoric acid
The invention discloses a laccase-nanoflower-γ-Fe 2 o 3 Copper alginate gel beads and its preparation method and application, the gel beads are passed through sodium alginate, γ-Fe 2 o 3 Ferrofluid colloidal solution and laccase-copper phosphate hybrid nanoflowers were stirred in water and added dropwise to copper chloride solution at a constant speed; sodium alginate, γ-Fe 2 o 3 The mass ratio of ferrofluid colloid solution to laccase-copper phosphate hybrid nanoflowers is 3000:30000-70000:5-50; γ-Fe 2 o 3 In ferrofluid colloidal solution, γ‑Fe 2 o 3 The particle diameter of the particle is 10nm; the diameter of the laccase-copper phosphate hybrid nanoflower is 15-20 μm. Laccase-nanoflower-γ-Fe of the present invention 2 o 3 Copper alginate gel beads showed higher catalytic efficiency than free enzymes in catalyzing the degradation of chlorophenols and the oxidation of polycyclic aromatic hydrocarbons and phenolic compounds, and showed good reusability and storage stability.
Owner:JILIN AGRICULTURAL UNIV
A kind of method that sodium alginate/chitosan composite prepares copper ion selective adsorbent
ActiveCN108212113BBreak the fixed thinkingGuarantee normal constructionOther chemical processesWater contaminantsEpoxyCu2 ions
The invention discloses a method for preparing a copper ion selective adsorbent by sodium alginate / chitosan compounding. The method comprises the following steps of firstly preparing a copper alginatepellet, afterwards, compounding the copper alginate pellet with chitosan, next, carrying out aldehyde pre-cross-linking and epoxy chloropropane cross-linking on a copper alginate / chitosan composite pellet, and finally eluting a copper ion by using hydrochloric acid to obtain the copper ion selective adsorbent. According to the method, the copper ion is used as a curing agent of sodium alginate and a template of ionic imprinting; a calcium ion is not added in a whole course; the construction of an imprinting site of the copper ion is ensured; the stepwise cross-linking is carried out on the composite pellet by adopting different cross-linking agents; the cross-linked structure is optimized; the recognizability of the imprinting site to the copper ion is enhanced; the selectivity of the adsorbent to the copper ion is improved. The method is wide in raw-material source, simple in preparation process and lower in production cost, and the adsorbent prepared by the method provided by the invention is high in adsorption quantity to the copper ion and good in selectivity, can be repeatedly recycled, moreover, is environmentally friendly, and has wide development and application prospects.
Owner:FUZHOU UNIV
Alkaline phosphatase or alpha fetoprotein detection method based on copper ion response pyrophosphate radical
ActiveCN114441758AReduce consumptionEasy to operateMicrobiological testing/measurementBiological material analysisCu2 ionsCopper alginate
The invention relates to an alkaline phosphatase or alpha fetoprotein detection method based on copper ion response pyrophosphate. Comprising the following steps: (1) preparing a copper alginate hydrogel and a sodium pyrophosphate solution; (2) preparing an alkaline phosphatase standard solution and an alpha fetoprotein standard solution with gradient concentrations; (3) drawing an alkaline phosphatase standard curve; (4) drawing an alpha fetoprotein standard curve; and (5) detecting the contents of alkaline phosphatase and alpha fetoprotein in the sample to be detected. The alkaline phosphatase or alpha fetoprotein detection method based on copper ion response pyrophosphate radical provided by the invention has the advantages of simple operation process, low cost, low reagent consumption and the like, the detection limit of alkaline phosphatase is 1.7 mU / mL, the quantitative detection limit of alpha fetoprotein is 0.8 ng / mL, the problems of complexity and high cost of the existing detection method are effectively solved, and the method is suitable for industrial production. And a development prospect is provided for clinical diagnosis and application.
Owner:SHANDONG UNIV
Copper alginate/copper ferrocyanide blend fiber and preparation method thereof
ActiveCN113106571ASolve the technical problem of poor adsorption capacityImprove adsorption capacityAlginate artificial filamentsWet spinning methodsFiberSpinning
The invention discloses a copper alginate / copper ferrocyanide blend fiber and a preparation method thereof, and relates to the technical field of radionuclide purification materials. According to the copper alginate / copper ferrocyanide blend fiber and the preparation method thereof provided by the invention, sodium ferrocyanide is added into a sodium alginate solution to prepare a sodium alginate / sodium ferrocyanide spinning solution; a copper sulfate solution is adopted as a coagulating bath, the sodium alginate / sodium ferrocyanide spinning solution is subjected to wet spinning forming to form the copper alginate fiber, and meanwhile copper ferrocyanide particles are separated out in situ in the copper alginate fiber to obtain the copper alginate / copper ferrocyanide blend fiber. According to the copper alginate / copper ferrocyanide blend fiber, copper alginate serves as a dispersion medium of copper ferrocyanide, the technical problem that powdered copper ferrocyanide has relatively poor adsorption capacity on radionuclide cesium can be solved, and the technical effect of improving the adsorption capacity of copper ferrocyanide on radionuclide cesium is achieved.
Owner:JIAXING UNIV
Preparation method of high-solid-content and high-strength copper alginate antibacterial filtering membrane
Aiming at the problems that alginate hydrogel is poor in strength, low in solid content and not resistant to bacteria, the invention reports a preparation method of a high-solid-content and high-strength copper alginate antibacterial filtering membrane. Firstly, a mixture aqueous solution of a reinforcing agent and sodium alginate is prepared as a membrane casting solution; meanwhile, dissolving cupric acetate into ethanol to serve as a coagulating bath; scraping the membrane casting solution into a membrane, soaking the membrane casting solution into a coagulating bath, and dispersing copper ions into a sodium alginate solution for crosslinking because copper acetate dissolved in ethanol is also dissolved in an aqueous solution, so as to obtain the copper alginate hydrogel. Meanwhile, water in the hydrogel diffuses into ethanol, and sodium alginate is not dissolved into ethanol, so that the copper alginate hydrogel film with high solid content is obtained. Due to high solid content, the strength of the membrane is greatly improved. The preparation method is simple, and the obtained high-solid-content and high-strength copper alginate antibacterial filtering membrane has wide application prospects in the fields of sewage treatment, dye desalination, antibiotic removal and the like.
Owner:TIANJIN POLYTECHNIC UNIV
Method for treating water pollutants with immobilized laccase based on protein mediator
ActiveCN105836896BHigh catalytic activityShort reaction timeWater contaminantsBiological water/sewage treatmentCopper alginateWater pollutants
The invention relates to a preparation method of immobilized laccase for treatment of organic pollutants in water in the field of biological environment governance. Laccase and hemoglobin serving as a mediator are added into a sodium alginate solution, the substances are mixed, then the mixed solution is dripped into a CuSO4 solution to carry out reaction so as to obtain precipitate, i.e. immobilized laccase. According to the invention, hemoglobin is used as a protein mediator and is immobilized on a copper alginate carrier together with laccase to improve the activity of laccase, at the same time the level for treatment of organic pollutants in water is also enhanced. With a treatment concentration of 0.1mM for pollutants in a water sample, the method can be applied to treatment of water samples in polluted areas.
Owner:SHANGHAI JIAOTONG UNIV
A kind of preparation method of highly active copper alginate catalyst
InactiveCN106975518BWide variety of sourcesSimple preparation protocolOrganic chemistryOrganic compound preparationPtru catalystBiopolymer
The invention discloses a preparation method of a high-activity copper alginate catalyst. The high-activity copper alginate catalyst is prepared from biopolymer, namely copper alginate, which is wide in resource, low in price, free of toxicity and environmentally friendly. Transitional metal copper ion (Cu2+) serves as the active center of the high-activity copper alginate catalyst; the high-activity copper alginate catalyst is characterized in that adjacent hydroxy of sodium alginate is oxidized into aldehyde group to obtain an intermediate product, namely dialdehyde alginate, and dialdehyde alginate is subjected to further imidization and then is in cross-linking with metal ion so as to obtain the high-activity copper alginate catalyst. The preparation method has the advantage of increasing metal loading quantity (namely quality of active sites ) to improve catalytic activity of the catalyst.
Owner:CHANGCHUN UNIV OF TECH
A kind of preparation method of copper phosphate-containing alginate hydrogel antibacterial filter membrane
ActiveCN110773008BStrong anti-pollutionEasy to prepareMembranesSemi-permeable membranesPhosphatePhosphoric acid
The invention discloses a preparation method of an alginate hydrogel antibacterial filter membrane containing copper phosphate. First, the soluble phosphate and sodium alginate are fully mixed and dissolved to obtain a casting solution. The casting solution is scraped into a film and immersed in a soluble calcium salt solution to fully cross-link, and at the same time as the calcium alginate hydrogel is formed, calcium phosphate is generated in situ in the hydrogel. Then the obtained calcium alginate hydrogel film containing calcium phosphate is soaked in the aqueous solution of the mixture of dilute hydrochloric acid and soluble copper salt, the dilute hydrochloric acid reacts with calcium phosphate to release phosphate, and the phosphate reacts with copper ions to form copper phosphate. Copper ions can capture part of the calcium ions in calcium alginate to generate copper alginate, thereby obtaining an antibacterial filter membrane of alginate hydrogel containing copper phosphate. The in situ generated phosphate in the hydrogel improved the mechanical properties of the alginate hydrogel, and the copper phosphate endowed the alginate hydrogel with good antibacterial properties.
Owner:中科瑞阳膜技术(北京)有限公司
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