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Novel C3N4/ZnO/Fe2O3 composite photocatalyst and preparation method as well as application thereof
ActiveCN103736514AWide absorption wavelength rangeIncrease profitPhysical/chemical process catalystsWater/sewage treatment by irradiationHazardous substanceCarbon nitride
The invention discloses a novel C3N4 / ZnO / Fe2O3 composite photocatalyst and a preparation method thereof. The method comprises the following steps: preparing a carbon nitride (C3N4) catalyst and a ZnO / Fe2O3 catalyst, then mixing according to the proportion, grinding and preparing the C3N4 / ZnO / Fe2O3 composite photocatalyst. The novel C3N4 / ZnO / Fe2O3 composite photocatalyst has the advantages that the photocatalytic efficiency is high, photocatalysis can be carried out in the range of ultraviolet band and visible light wavelength, the application range is wider, high-efficiency degradation can be carried out on wastewater, especially pollutants in the dye wastewater, the degradation is thorough and the used time is short; the method is simple in operation, mild in reaction condition, does not use toxic and harmful substances as materials, and is green and environment-friendly, thus avoiding secondary pollution.
Owner:安徽丰华医药包装有限公司
Composite photocatalyst Bi2O3/g-C3N4 as well as preparation method and application of composite photocatalyst
InactiveCN104607230AEasy to operateSimple and fast operationPhysical/chemical process catalystsWater/sewage treatment by irradiationSewageNitrogen source
The invention discloses a preparation method for a composite photocatalyst Bi2O3 / g-C3N4. The preparation method comprises the following steps: preparing g-C3N4, namely calcining a carbon and nitrogen source at the temperature of 400-1000 DEG C to prepare g-C3N4; mixing Bi2O3 solid with the g-C3N4 prepared in step 1, and grinding; calcining the grinded mixture at the temperature of 400-1000 DEG C to prepare the composite photocatalyst Bi2O3 / g-C3N4. The invention further discloses application of the composite photocatalyst Bi2O3 / g-C3N4 prepared by the method in sewage treatment, in particular, in the aspect of dye sewage.
Owner:FUYANG NORMAL UNIVERSITY
Method for photocatalytic degradation of organic pollutants by using defective metal organic framework photocatalyst
ActiveCN109647525APromote degradationEfficient removalWater/sewage treatment by irradiationWater treatment compoundsMetal-organic frameworkWastewater
The invention discloses a method for photocatalytic degradation of organic pollutants by using a defective metal organic framework photocatalyst, which adopts the defective metal organic framework photocatalyst to perform photocatalytic degradation on organic pollutants, wherein the defective metal organic framework photocatalyst is prepared by solvent thermal reaction under the action of an acidregulator and taking ferric trichloride hexahydrate and terephthalic acid as raw materials, and N, N-dimethyl formamide as a solvent; the defective metal organic framework photocatalyst is a defect type MIL-53 metal organic framework photocatalyst. The method for photocatalytic degradation of organic pollutants by using the defective metal organic framework photocatalyst has the advantages of simple process, convenient operation, low cost, easy recycling, high treatment efficiency, high degradation rate and the like, can achieve effective and rapid degradation of organic pollutants, and has good application prospect in the actual treatment of the organic pollutant wastewater.
Owner:HUNAN UNIV
Preparation method of activated carbon loaded and Zn2+/TiO2-doped photocatalyst
ActiveCN101773844AEasy to operateSimple equipmentPhysical/chemical process catalystsDispersed particle separationPhotocatalytic degradationIon
The invention discloses a preparation method of an activated carbon loaded and Zn2+ / TiO2-doped photocatalyst, which comprises the following steps that: step 1: a certain amount (1 to 2.98g) of zinc nitrate is weighed, the zinc nitrate, 1.5ml distilled water and 2ml glacial acetic acid are added into 15ml absolute ethyl alcohol while being stirred, to form solution A; and step 2: 10ml tetrabutyl titanate is added into 30ml absolute ethyl alcohol while being intensively stirred, and stirred for a certain period of time (1 to 2h). After being stirred for a period of time, the solution A is slowly dripped into B, and continuously stirred for 30min. And then a certain amount of pre-treated activated carbon is intensively stirred for 1h, dipped for 12 to 72h, filtered, and washed by the absolute ethyl alcohol and deionized water for a plurality of times. The loaded activated carbon is dried for 2h at 120 DEG C, and calcined for 2h at 300 to 550 DEG C to prepare the activated carbon loaded and Zn2+ / TiO2-doped photocatalyst. The photocatalytic degradation rate of the photocatalyst to gas-phase toluene can reach 92 percent, which is 1.3 times of that of a single TiO2 / AC photocatalyst.
Owner:INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof
InactiveCN103373750AHigh photocatalytic degradation rateNo pollution in the processWater/sewage treatment by irradiationWater contaminantsOrganic matterPhotocatalytic degradation
The invention provides a light source device for removing organic matters and heavy metal ions by visible light. The light source device adopts a visible light LED (Light Emitting Diode) as a light source. The invention further provides a preparation method of the light source device for removing the organic matters and the heavy metal ions by the visible light. The light source device disclosed by the invention has high removing rate of the organic matters and the heavy metal ions, can be used for treating pollutants in water and can also be used for degrading the pollutants in the air; meanwhile, the light source device can also be used for common illumination. Compared with the prior art, the light source device has the advantages of high photocatalytic degradation rate, no pollution, long service life, low cost and the like, and is good for large-scale application and universalness of photocatalysis, and the preparation method is simple.
Owner:SUZHOU SUNLIGHTS TECH
Method for preparing highly active Fe/Sn ion co-doped nano phtocatalyst of titanium dioxide
InactiveCN1799693AImprove photocatalytic activityHigh photocatalytic degradation rateCatalyst activation/preparationIonPhotocatalytic degradation
The invention provides a method for preparing visible light-induced high catalysis activity tin-doping nanometer titanium oxide photo-catalyst, belonging to the photo-catalyst material technique. It comprises following steps: first preparing tin-doping TiO2 sol; then, preparing tin-doping TiO2 film. The invention comprises the advantages that the prepared nanometer TiO2 film doping with Sn4+ has the duplex grain structure between anatase and red schorl; the average size of crystal grain ranges between 25-30nm, while the red schorl is formed by solid solving the Sn4+ into TiO2 crystal lattice; the surface of transparent film is smooth with a certain coarseness; the absorption band to incident light of TiO2 photo-catalyst film is removed to visible light band by doping Sn4+ to improve the visible light-induced photo-catalyst. The photo-catalyst activity is presented as the photo-catalyst degradation rate of helianthin and doping Sn4+ in right amount can effectively improve the photo-catalyst activity of TiO2 film, while compared with absolute nanometer TiO2 film, its photo-catalyst degradation rate of helianthin is improved more than 34%.
Owner:UNIV OF SCI & TECH BEIJING
Preparation method of modified bentonite sewage treatment material
InactiveCN105983399AImprove adsorption capacityIncrease utilization uptakeWater/sewage treatment by irradiationOther chemical processesHeat treatedIon
The invention provides a preparation method of a modified bentonite sewage treatment material. The method includes the steps of: 1) adding tetrabutyl titanate to anhydrous ethanol, and adding glacial acetic acid to prepare a solution A; 2) adding a metal nitrate to deionized water and adding anhydrous ethanol and nitric acid to prepare a solution B; 3) adding bentonite to deionized water, and adding glacial acetic acid to prepare a suspension C; 4) slowly adding the solution B to the solution A to form a solution D, and slowly adding the solution D to the suspension C to form gel; 5) drying, grinding, washing, drying and thermal-treating the gel to obtain bentonite modified by TiO2; and 6) adding the bentonite modified by TiO2 to an organic cationic surfactant solution, filtering the mixture, and washing and drying the product to prepare the modified bentonite sewage treatment material. The modified bentonite sewage treatment material has strong adsorption and degradation capability on organic substances, heavy metal ions, nitrogen, phosphorus and the like.
Owner:青岛润国生态科技研究院 +2
Vanadium pentoxide/titanium dioxide composite photocatalyst for degrading formaldehyde
ActiveCN103586041AHigh photocatalytic degradation rateIncrease distanceDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsPtru catalystPhysical chemistry
The invention relates to preparation of a composite photocatalyst, and particularly relates to a photocatalytic material which is formed by loading a P25 type nano TiO2 / V2O5 composite on foamed nickel having large specific surface area and has high catalytic degradation performance. The preparation method comprises the following steps: dissolving ammonium metavanadate in water, performing wet milling together with P25, impregnating, loading onto the foamed nickel, drying, and calcining at 500 DEG C for 1 hour, thus obtaining the foamed nickel loaded V2O5 / P25 photocatalytic material. According to the invention, the preparation method is simple; no expensive equipment is required; the raw materials are low in price; the mechanical performance is favorable; and the photocatalytic degradation rate and visible light response range of the prepared catalyst are greatly improved in comparison with P25. When the composite photocatalyst is used for degrading harmful gas such as formaldehyde and the like in rooms and automobiles, the problems that the powdery photocatalyst is difficult to recover and regenerate after use and the like can be avoided.
Owner:童海霞
Photocatalyst CN-ZnO and preparation method and application thereof
InactiveCN105195195AHigh photocatalytic degradation rateImprove degradation efficiencyPhysical/chemical process catalystsWater/sewage treatment by irradiationMethyl orangeZinc
The invention provides a photocatalyst CN-ZnO and a preparation method and application thereof. According to the photocatalyst CN-ZnO, nitrogen-containing organic matter and a zinc-containing compound serve as raw materials, and the photocatalyst containing graphite-phase carbon nitride (abbreviated as CN) and zinc oxide can be prepared through a hydrothermal method, is a composition and has a good catalytic degradation effect on organic dye and particularly azo type organic dye such as methyl orange under visible light.
Owner:FUYANG NORMAL UNIVERSITY
Photocatalyst for degrading dye in wastewater and preparing method thereof
ActiveCN105148983ALarge apertureLarger than surfaceWater/sewage treatment by irradiationMolecular sieve catalystsWastewaterMesoporous silica
The invention discloses a photocatalyst for degrading dye in wastewater and a preparing method thereof, and belongs to the field of photocatalysis. The photocatalyst for degrading the dye in the wastewater is characterized in that mesoporous silica serves as carriers, copper-element-doping nano-zinc oxide is loaded on the mesoporous silica carriers, the mass percent of zinc elements ranges from 5% to 40%, and the mass percent of the copper elements ranges from 0.1% to 5%. The photocatalyst for degrading the dye in the wastewater is used for catalytic degradation of methylene blue or rhodamine b, and is capable of achieving visible-light responses, low in cost, high in degradation efficiency and good in stability.
Owner:BINZHOU UNIV
Preparation method for functional foam carbon for photocatalytically degrading formaldehyde
The invention relates to a preparation method for a functional foam carbon for photocatalytically degrading formaldehyde. The preparation method for the functional foam carbon for photocatalytically degrading formaldehyde includes the following steps: (1) preparation of polyurethane foam carbon; (2) preparation of the functional foam carbon for photocatalytically degrading formaldehyde. The prepared polyurethane foam carbon shows a developed reticular structure, and polyurethane and active carbon are tightly combined. Supported TiO2 is mainly distributed on the pore surface of the foam carbon. The removal of formaldehyde by the TiO2-supported functional foam carbon is shown as the synergism between adsorption and photocatalytic degradation, the rich foam-like pore structure provides a large number of attachment points for formaldehyde gas, TiO2 photocatalytically degrades the formaldehyde gas into small molecules under radiation by ultraviolet light, and a high added active carbon amount and a doped TiO2 amount are both favorable for the removal of the formaldehyde gas. When the added active carbon amount is 35 percent and the doped TiO2 amount is 2 percent, the photocatalytic degradation rate is highest, reaching 85.3 percent.
Owner:SHAANXI SHENGMAI PETROLEUM
Attapulgite-graphite-like carbonitride composite hollow fiber microfiltration membrane with photocatalytic performance and preparation method and application thereof
ActiveCN106943890ARealize self-cleaningImprove throughputWater/sewage treatment by irradiationWater contaminantsCarbon compositesFiber
The invention relates to an attapulgite-graphite-like carbonitride composite hollow fiber microfiltration membrane with photocatalytic performance and a preparation method and application thereof. The preparation method comprises the following steps: adding attapulgite-graphite-like carbonitride composite particles into a solvent to prepare a polyethersulfone casting solution, extruding the casting solution through a spinning nozzle, passing through a section of air gap and entering coagulation bath for curing molding, and sintering to obtain the attapulgite-graphite-like carbonitride composite hollow fiber microfiltration membrane with photocatalytic performance. The hollow fiber microfiltration membrane is composed of fibrous attapulgite and a graphite-like carbonitride polymer with photocatalytic performance. By the photocatalytic performance of the graphite-like carbonitride, coupling of photocatalysis and membrane separation process can be realized. As the graphite-like carbonitride polymer is uniformly dispersed and immobilized on the attapulgite surface of the membrane through the chemical binding effect, the deficiency that granular graphite-like carbonitride is easy to agglomerate, hard to separate and difficult to reuse during the separate using process is effectively avoided.
Owner:HUAIYIN TEACHERS COLLEGE
Preparation method of composite visible light photo-catalyst
ActiveCN106914264ASimple processEasy to realize industrial productionPhysical/chemical process catalystsWater/sewage treatment by irradiationNitrogen sourceOrganic matter
The invention discloses a preparation method of a composite visible light photo-catalyst. The preparation method includes the steps of: 1) uniformly dispersing a titanium source and a nitrogen source in ethanol, dropwise adding water to the ethanol to prepare a mixed material; 2) under stirring, evaporative-drying the mixed material to obtain a precursor; 3) moving the precursor to a muffle furnace and calcining the precursor at 300-800 DEG C for 0.5-12 h in the muffle furnace to prepare the TiO2 / g-C3N4 composite visible light photo-catalyst. In the method, the TiO2 and g-C3N4 and the composite TiO2 / g-C3N4 visible light photo-catalyst are prepared at the same time, so that synthesis of the two compounds, TiO2 and g-C3N4, and preparation of the composite catalyst are completed in one step. The method is simple in processes and is easy to achieve industrially. The visible light photo-catalyst has a large quantity of photo-catalytic active centers, and is high in light absorption rate and photo-catalysis activity, and is high in photo-catalytic degradation rate on organic matters.
Owner:JIANGSU UNIV OF TECH
Bismuth molybdate graphene aerogel compound and preparation method thereof
InactiveCN108620060ASimple methodImprove adsorption capacityWater/sewage treatment by irradiationWater contaminantsSolventBismuth
The invention discloses bismuth molybdate graphene aerogel compound and a preparation method thereof and belongs to the technical field of photocatalyst preparation. According to the bismuth molybdategraphene aerogel compound disclosed by the invention, graphene oxide is utilized as a raw material, hexaammonium molybdate tetrahydrate and anhydrous bismuth nitrate are utilized as raw materials forpreparing Bi2MoO6, and 3D Bi2MoO6 / reduced graphene oxide aerogel compound can be finally obtained through solvent heat and freeze drying treatment. The life of an electron-hole pair of the synthesized 3D Bi2MoO6 / reduced graphene oxide aerogel compound is longer, adsorption capacity of the synthesized 3D Bi2MoO6 / reduced graphene oxide aerogel compound to organic pollutants and absorption capacityof the synthesized 3D Bi2MoO6 / reduced graphene oxide aerogel compound to visible light are also enhanced, and catalytic degradation activity to the organic pollutants under the visible light is higher. A photodegradation rate of the 3D Bi2MoO6 / reduced graphene oxide aerogel compound is 2.1 times of that of Bi2MoO6 and is 2.46 times of that of reduced graphene oxide aerogel, and the 3D Bi2MoO6 / reduced graphene oxide aerogel compound has higher actual application value.
Owner:JIANGNAN UNIV
Preparation method of nano TiO2 thin-film material
InactiveCN103041828AHigh photocatalytic degradation rateShape is easy to controlCatalyst activation/preparationPlasma electrolytic oxidationMicro arc oxidation
The invention discloses a preparation method of nano TiO2 thin-film material. The method comprises the following steps: firstly, preparing a pure titanium sheet into rectangular sheets of 25*15*2mm, secondly, pretreatment of the titanium sheet: sanding, degreasing, hydrochloric acidizing fluid rinsing, ultrasonic deionized water washing and vacuum drying, thirdly, laying the pretreated titanium sheet on micro-arc oxidation equipment, so as to be conducted to micro-arc oxidation, taking the titanium sheet as anode to be dipped into treating fluid and a stainless steel container with a cooling system as cathode, and fourthly, performing deionized water washing and drying to an obtained nano TiO2 thin-film, and then performing ion dipping to the thin-film, wherein experiment parameters are as follows: voltage is 420V, the preparation time is 30min, the content of Na3PO4 in a phosphate electrolyte system is 10g / L, the content of NaF is 1g / L, and the electrolyzing temperature is controlled to be below 35 DEG C. The method has the advantages that the photocatalytic degradation rate of the nano TiO2 thin-film exceeds 50 percent, the raw material is chip and common, the technology is simple, the cost is low, and the method is beneficial to industrial production.
Owner:CHANGZHOU UNIV
Carbon quantum dot/mesoporous layered titanium dioxide as well as preparation method and application thereof
ActiveCN112588283AImprove photocatalytic performanceInhibition of activationPhysical/chemical process catalystsWater/sewage treatment by irradiationAmmonium bromidePeptization
The invention discloses carbon quantum dot / mesoporous layered titanium dioxide as well as a preparation method and application thereof, and belongs to the technical field of titanium dioxide preparation. Carbon quantum dots are prepared by a hydrothermal method, cetyltrimethylammonium bromide (CTAB) is used as a morphology control agent, mesoporous layered titanium dioxide powder (CTAB-TiO2) is prepared by a precipitation peptization method, and the carbon quantum dots and the CTAB-TiO2 are compounded to obtain the carbon quantum dot / mesoporous layered titanium dioxide (CQDs / CTAB-TiO2). The CQDs / CTAB-TiO2 can react with conjugated pi bonds formed by organic pollutants, the adsorption effect and photocatalytic performance on the organic pollutants are improved, the problems of complex preparation process and high energy consumption in traditional methods can be effectively solved, and the actual application range of titanium dioxide is further expanded.
Owner:NEIJIANG NORMAL UNIV
Preparation method of CaTi2O5tremella-like micro-nano structure photocatalyst and product prepared by method
ActiveCN104857944AReduce compound lossImprove photocatalytic performanceWater/sewage treatment by irradiationTitanium compoundsMicro nanoControllability
The invention discloses a preparation method of a CaTi2O5tremella-like micro-nano structure photocatalyst, which comprises the steps of dissolving a titanium compound in an organic solvent, adding distilled water to form powder A, dissolving calcium chloride dihydrate in the distilled water, adding an organic solvent, stirring uniformly to form liquid B, adding the liquid B into the powder A, regulating a pH (potential of hydrogen) value of a system to 2-4, stirring and mixing, putting in a hydrothermal kettle for hydrothermal reaction, and washing a reaction product with the distilled water to form the CaTi2O5tremella-like micro-nano structure photocatalyst. In addition, the invention further discloses a product prepared by the preparation method. The method has a simple process route and low production cost, does not require a special device; the pure CaTi2O5tremella-like micro-nano structure photocatalyst with outstanding photocatalysis performance is obtained without a surfactant or a template; the yield and controllability are high; the product still keeps a higher photocatalytic degradation rate after multiple reuse and is easy to recover; and the use value and economic benefits of the product in the industrial circle are effectively improved.
Owner:JINGDEZHEN CERAMIC INSTITUTE
CaTi2O5/CaTi2O4(OH)2 composite micro-nano structure material and preparation method thereof
ActiveCN104941623AImprove photocatalytic performanceEasy to recycleMetal/metal-oxides/metal-hydroxide catalystsMicro nanoHigh probability
The invention discloses a CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material. The CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material is formed by bearing CaTi2O5 nano particles by a CaTi2O4(OH)2 sheet-shaped structure; the thickness of the CaTi2O4(OH)2 sheet-shaped structure is 85nm-100nm and the length and width average size is 1-2.5 microns; and the grain diameter of the CaTi2O5 nano particles is 0.5nm-1.5nm. Furthermore, the invention discloses a preparation method of the CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material. The CaTi2O5 nano particles are borne by the CaTi2O4(OH)2 sheet-shaped structure so that the efficient photocatalytic activity is kept and the problems of high probability of clustering and difficulty for recycling are solved; and the use value and the economic benefits of the material in the industrial field are effectively improved. The preparation method has a simple process route, does not need a special device, does not need a surfactant or a template and is low in production cost, so that the preparation method is suitable for large-scale industrial production and the application and development of a photocatalytic technology can be promoted.
Owner:JINGDEZHEN CERAMIC INSTITUTE
Preparation method of composite visible light photo-catalyst
ActiveCN106914263ASimple processEasy to realize industrial productionPhysical/chemical process catalystsWater/sewage treatment by irradiationPhoto catalyticNitrogen source
The invention discloses a preparation method of a composite visible light photo-catalyst. The preparation method includes the steps of: 1) uniformly dispersing a titanium source and a nitrogen source in ethanol, and dropwise adding water to the ethanol to obtain a mixed material; 2) under stirring, evaporative-drying the mixed material to prepare a precursor; 3) moving the precursor into a muffle furnace and calcining the precursor at 300-800 DEG C for 0.5-12 h in the muffle furnace to obtain the TiO2 / g-C3N4 composite visible light photo-catalyst. In the invention, the TiO2 / g-C3N4 composite visible light photo-catalyst is prepared at the same time of preparing the TiO2 and the g-C3N4, so that synthesis of the two compounds, TiO2 and g-C3N4, and preparation of the composite catalyst are completed in one step. The preparation method is simple and is easy to achieve in industrial production. The composite visible light photo-catalyst has a large number of photo-catalytic activity centers, is high in light absorption rate and photo-catalytic activity, and is high in photo-catalytic degradation rate of organic matters.
Owner:JIANGSU UNIV OF TECH
Preparation method of TiO2/g-C3N4 composite visible-light photocatalyst
ActiveCN106824246ASimple processEasy to realize industrial productionPhysical/chemical process catalystsWater/sewage treatment by irradiationAlcoholOrganic matter
The invention discloses a preparation method of a TiO2 / g-C3N4 composite visible-light photocatalyst. The preparation method comprises the following steps: a Ti source and an N source are uniformly dispersed in ethyl alcohol, then water is added dropwise to the ethyl alcohol, and a mixed material is obtained; a precursor is obtained by evaporating the mixed material in a stirring state to dryness; the prepared precursor is transferred into a muffle furnace and calcined in the muffle furnace at 300-800 DEG C for 0.5-12 h, and the TiO2 / g-C3N4 composite visible-light photocatalyst is obtained. The TiO2 / g-C3N4 composite visible-light photocatalyst is prepared during preparation of TiO2 and g-C3N4, and synthesis of TiO2 and g-C3N4 and preparation of the composite catalyst are realized in one step; the process is simple, and industrial production is easy to realize. The composite visible-light photocatalyst has many photocatalytic activity centers and is higher in light absorptivity, photocatalytic activity and rate of photocatalytic degradation of organic matter.
Owner:JIANGSU UNIV OF TECH
Preparation method of dye-sensitized metal sulfide semiconductor nanomaterial
InactiveCN103240125AEvenly dispersedGrain size adjustableWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsSemiconductor materialsIon exchange
Owner:BEIJING UNIV OF CHEM TECH
Nickel pyridine methylene phosphonate coordination polymer as well as preparation method and application thereof
ActiveCN110218333AEasy to adjustHigh photocatalytic degradation rateOrganic-compounds/hydrides/coordination-complexes catalystsGreen materialsPyridine
The invention relates to a nickel pyridine methylene phosphonate coordination polymer as well as a preparation method and application thereof. The nickel pyridine methylene phosphonate coordination polymer has a molecular formula of [Ni(4-pmp)(H2O)3]n, belongs to a monoclinic system and has P21 / c space groups, and a space accumulation structure is of a two-dimensional layered structure. The coordination polymer prepared by the method disclosed by the invention has a high photocatalytic degradation rate on methylene blue under visible light conditions, and the degradation rate is up to 71.7%; and after the methylene blue is subjected to photocatalytic degradation of 3 cycles, the structure of the coordination polymer disclosed by the invention is not changed, the coordination polymer has high stability and high photochemical activity, is basically invariable in photocatalytic effect of the methylene blue, can be recycled, meets requirements of green materials, and provides a new selection for degradation of azo dyes.
Owner:JIANGSU UNIV OF TECH
Photocatalyst for degrading dye in wastewater and preparation method thereof
ActiveCN105148983BLarge apertureLarger than surfaceWater/sewage treatment by irradiationMolecular sieve catalystsMethyl blueEngineering
The invention discloses a photocatalyst for degrading dyes in waste water and a preparation method thereof, belonging to the field of photocatalysis. The photocatalyst for degrading dyes in waste water of the present invention uses mesoporous silica as a carrier, and the nano-zinc oxide doped with copper is loaded on the mesoporous silica carrier; the mass fraction of zinc is 5-40%, copper The mass fraction of elements is 0.1‑5%. The photocatalyst of the invention for degrading dyes in waste water catalyzes and degrades methylene blue or rhodamine B in response to visible light, has low cost, high degradation efficiency and good stability.
Owner:BINZHOU UNIV
Tungsten trioxide-titanium dioxide composite photocatalyst for degrading formaldehyde
ActiveCN103537294AHigh photocatalytic degradation rateInhibitory complexMetal/metal-oxides/metal-hydroxide catalystsTungstatePhotocatalytic degradation
The invention relates to preparation of a composite photocatalyst and particularly relates to a composite photocatalyst loading P25 type nanometer TiO2-WO3 composite on nickel foam with a large specific surface area and having a good catalytic degradation effect. The preparation method comprises: dissolving ammonium tungstate in hot ammonia water, wet grinding the solution with P25, soaking and loading the product on nickel foam, drying the product at 100 DEG C, and calcining the product at 500 DEG C for 1 h to obtain a nickel foam loaded WO3 / P25 photocatalytic material. The preparation method provided by the invention is simple, no expensive equipment is needed, the cost of the raw materials is low, the mechanical property is good; the photocatalytic degradation speed of the prepared catalyst is greatly improved compared with that of P25, and the prepared catalyst is used for degrading such harmful gases indoors or in automobiles as formaldehyde, and the like, and effectively solving the problems that a powdery photocatalyst is difficult to recycle and regenerate after being used.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Environment-friendly biological hydroxymethyl cellulose photocatalytic composite membrane as well as preparation method and application thereof
ActiveCN108855211ALow costEasy to realize industrializationWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsUltrasonic assistedHydroxymethyl cellulose
The invention discloses an environment-friendly biological hydroxymethyl cellulose photocatalytic composite membrane as well as a preparation method and application thereof, and belongs to the field of photocatalyst preparation and photocatalytic environmental management. The preparation method of the environment-friendly biological hydroxymethyl cellulose photocatalytic composite membrane mainlycomprises the following steps: firstly, ultrasonic assisted bionic extraction of barley straws; secondly, extraction of hydroxymethyl cellulose; thirdly, preparation of a barley straw hydroxymethyl cellulose membrane; fourthly, preparation of the hydroxymethyl cellulose photocatalytic composite membrane. The composite membrane prepared by the preparation method disclosed by the invention, has theadvantages of safety and no toxicity, biodegradability, economy and environment friendliness and low cost; barley straws as agricultural wastes are recycled, so that recyclable development of economyis realized.
Owner:军安绿色新材料科技(广州)有限公司
Preparation and applications of photocatalyst CNU-BA
InactiveCN107715905AHigh photocatalytic degradation rateImprove degradation efficiencyPhysical/chemical process catalystsWater/sewage treatment by irradiationOrganic dyeNitrogen
The invention provides preparation and applications of a photocatalyst CNU-BA. According to the photocatalyst CNU-BA, a nitrogenous organic compound and barbituric acid are used as raw materials, andby means of impregnation and roasting, the photocatalyst CNU-BA is obtained. The photocatalyst CNU-BA has a good catalytic degradation effect on organic dyes, especially azo-organic dyes, such as methyl orange in visible light.
Owner:FUYANG NORMAL UNIVERSITY
Preparation method of titanium dioxide biomorphic material with high catalytic activity
PendingCN112263998ASimple methodLow costWater/sewage treatment by irradiationWater treatment compoundsMuffle furnaceMaterials science
The invention relates to a preparation method of a titanium dioxide biomorphic material with high catalytic activity. The method comprises the following steps: preparing a diluted hydrochloric acid solution, adding a biomass raw material, carrying out suction filtration, repeatedly conducting cleaning with deionized water until a pH value is 7, and carrying out drying at 50-60 DEG C; dissolving tetrabutyl titanate into absolute ethyl alcohol, and adding acetylacetone; conducting stirring in a magnetic stirrer to obtain a mixed solution which is marked as a solution A; dissolving triethylamineinto absolute ethyl alcohol and marking the formed solution as a solution B; pouring the solution B into the solution A until the pH value of the mixed solution is adjusted to 7.5+ / -0.5, and soaking abiomass raw material into a prepared alcoholic solution of TiO2; and carrying out drying and sintering, putting the biomass raw material impregnated with the TiO2 alcoholic solution into a muffle furnace, and carrying out sintering in the air to obtain the TiO2 biomorphic material. The method has the advantages of rich template materials, economy, environmental protection, simple process, diversetemplate compositions and structures and the like, and has important research significance.
Owner:HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Preparation method and application of CuO/graphene composite material
PendingCN113809318ASimple processComplete crystal formHybrid capacitor electrodesCell electrodesPtru catalystSolar battery
The invention discloses a preparation method and application of a CuO / graphene composite material. The CuO / graphene composite material is successfully prepared from a copper salt and an environment-friendly reducing agent through one-step hydrothermal reduction, the specific surface area of the composite material is 150.1 m<2> / g, and the composite material shows excellent degradation performance on organic wastewater as a catalyst; and as a lithium ion negative electrode material, the composite material has relatively large reversible capacity and cycling stability, the first reversible capacity reaches 784.7 mAhg<-1>, and the retention rate after 50 cycles is 87.4%. The preparation method is simple, convenient to operate, low in cost and short in preparation period. The material can be used in the fields of supercapacitor electrode materials, lithium ion battery electrode materials, photosensitive materials, heterogeneous catalysis, photoelectrocatalysis, solar cells and the like.
Owner:CHANGCHUN UNIV OF TECH
A photocatalyst of vanadium pentoxide composite titanium dioxide for the degradation of formaldehyde
ActiveCN103586041BHigh photocatalytic degradation rateIncrease distanceDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsAmmonium metavanadatePhotocatalytic degradation
The invention relates to preparation of a composite photocatalyst, and particularly relates to a photocatalytic material which is formed by loading a P25 type nano TiO2 / V2O5 composite on foamed nickel having large specific surface area and has high catalytic degradation performance. The preparation method comprises the following steps: dissolving ammonium metavanadate in water, performing wet milling together with P25, impregnating, loading onto the foamed nickel, drying, and calcining at 500 DEG C for 1 hour, thus obtaining the foamed nickel loaded V2O5 / P25 photocatalytic material. According to the invention, the preparation method is simple; no expensive equipment is required; the raw materials are low in price; the mechanical performance is favorable; and the photocatalytic degradation rate and visible light response range of the prepared catalyst are greatly improved in comparison with P25. When the composite photocatalyst is used for degrading harmful gas such as formaldehyde and the like in rooms and automobiles, the problems that the powdery photocatalyst is difficult to recover and regenerate after use and the like can be avoided.
Owner:童海霞
A Tungsten Trioxide Composite Titanium Dioxide Photocatalyst for Degrading Formaldehyde
ActiveCN103537294BReduce energy consumptionLow costMetal/metal-oxides/metal-hydroxide catalystsTungstatePhotocatalytic degradation
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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