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60results about How to "Reduce photocorrosion" patented technology
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Cu2OTiO2 nanotube array and preparation method thereof
InactiveCN101851772ALarge specific surface areaAperture adjustableAnodisationElectron holeTio2 nanotube
The invention discloses an environmental function nano-material-Cu2O / TiO2 nanotube array and a preparation method thereof. A TiO2 nanotube array is placed in 5mmol-20mmol of CuSO4 solution, and copper is electrodeposited on the TiO2 nanotube array in a standard three-electrode system by using pulse plating so as to obtain the Cu / TiO2 composite nanotube array; and after the deposition, the Cu / TiO2 composite nanotube array is electro-oxidized for certain time in an alkaline solution NaOH to obtain a TiO2 nanotube array modified by ultrafine Cu2O nanowires with the diameter of less than 5 nanometers. The nanaowires are intertwined and connected to from a network structure to be attached to the TiO2 nanotube array but do not fully block TiO2 nanotubes; the Cu2O / TiO2 nanotube array is very favorable for the transmission of photo-carriers, reduces the recombination probability of electron-hole pairs, effectively expands the absorption range of TiO2 in the visible region, reduces optical corrosion, improves photoelectric conversion efficiency, and shows good photocatalytic efficiency.
Owner:HUNAN UNIV
Preparation method of p-CuO/n-CdS/ZnS composite semiconductor photochemical catalyst
InactiveCN102125858AExtended service lifeImprove photocatalytic efficiencyPhysical/chemical process catalystsHydrogen productionDistillationUltrasonic dispersion
The invention discloses a preparation method of a p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst, which comprises the steps of: firstly, with an ammonium salt, a zinc salt, a cadmium salt, thiocarbamide and deionized water as raw materials, sequentially carrying out treatments such as microwave reaction, ultrasonic dispersion, heating reaction, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain CdS / ZnS solid powder; and secondly, with the CdS / ZnS solid powder, a copper salt, alkali and deionized water as raw materials, sequentially carrying out treatments such as reaction, ultrasonic dispersion, decompression distillation, thermal treatment, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain the p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst. Through compounding a p-type semiconductor CuO with n-type semiconductor CdS and ZnS, oxidization of holes to the CdS can be effectively reduced, the light corrosion rate of the CdS is decreased; and photoproduced electronics are effectively separated from the holes, thus the service life of the CdS is prolonged, and the photochemical catalysis efficiency of the p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst is increased. The method is simple, convenient and practical, and is beneficial to popularization.
Owner:NANJING FORESTRY UNIV
Preparation method for copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst
InactiveCN105126917ASmall particle sizeEvenly dispersedOrganic-compounds/hydrides/coordination-complexes catalystsDehydrogenationIon exchange
The invention discloses a preparation method for a copper / cuprous oxide / cyclized polyacrylonitrile visible-light-driven photocatalyst, and belongs to the technical field of environmental cleaning photocatalyst new materials. The preparation method includes the steps of firstly, preparing a nanometer copper hydroxide / photocatalyst compound by synchronously conducting solvent conversion and in-situ ion exchange reaction with photocatalyst, cupric nitrate and sodium hydroxide as raw materials; secondly, reducing copper hydroxide into cuprous oxide in situ through ascorbic acid; thirdly, conducting thermal treatment under the nitrogen atmosphere, reducing a small amount of cuprous oxide into elementary substance copper while cyclization and dehydrogenation are conducted on polyacrylonitrile to form a conjugated structure, and obtaining the copper / cuprous oxide / cyclized polyacrylonitrile visible-light-driven photocatalyst. The raw materials are wide in source, cost is low, the preparation method is simple and suitable for large-scale production, cyclized polyacrylonitrile can improve the separation efficiency of photoproduction electron holes and absorption of the visible light areas and can have a protection and optical corrosion reduction effect on copper / cuprous oxide, and the obtained catalyst is remarkable in adsorption and photocatalytic effect.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
TiO2/CdS/graphene composite photocatalytic material and preparation method therefor
InactiveCN105214689APrevent photocorrosionImprove photocatalytic performancePhysical/chemical process catalystsWater/sewage treatment by irradiationUltravioletPhoto catalysis
Owner:SHANGHAI INST OF TECH
Preparation method for porous nano p-CuS/n-CdS compound semiconductor photochemical catalyst
InactiveCN102489318AImprove photocatalytic efficiencyReduce photocorrosionCatalyst activation/preparationPhotocatalytic water splittingDistillation
The invention discloses a preparation method for a porous nano p-CuS / n-CdS compound semiconductor photochemical catalyst. According to mass percents of templates of copper salt, cadmium salt, a sulfocompound and a sublimable compound and deionized water (0.001%-75%): (0.00001%-90%): (0.001%-85%): (0.001%-75%): (0.001%-98%), and sequentially subject to processes of reaction, centrifugal separation, distilled water washing, ultrasonic dispersion, centrifugal separation, ultrasonic treatment, reduced pressure distillation, drying, roasting, natural cooling, grinding and the like, the p-CuS / n-CdScompound semiconductor photochemical catalyst is obtained. On the condition that visible light and sunlight serve as light sources, the p-CuS / n-CdS compound semiconductor photochemical catalyst can be applied to hydrogen production of photocatalytic water splitting and photocatalytic degradation of organic pollutants. The preparation method is simple and practicable in process, small in investment and beneficial for popularization and application.
Owner:NANJING FORESTRY UNIV
Preparation method of CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst
InactiveCN107362830AReduce photocorrosionImprove photocatalytic activityOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationIrradiationElectron
The invention relates to a preparation method of a CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst, and particularly to a hydrogen-production catalyst preparation method. In the prior art, the existing CdS semiconductor photocatalyst is easily subjected to light corrosion, such that the compounding probability of the photo-generated electrons and the holes is high, and the utilization rate of the sunlight is low so as to provide the low photocatalytic hydrogen production rate. A purpose of the present invention is to solve the problem in the prior art. The preparation method comprises: 1, preparing a CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst crude product; and 2, adding the CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst crude product to a reaction kettle, and carrying out a hydrothermal reaction to obtain the CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst. According to the present invention, the hydrogen peroxide decomposing hydrogen production rate of the CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst can achieve 510.5 [mu]mol.h<-1>.g<-1>-586.1 [mu]mol.h<-1>.g<-1> under the irradiation of a 300 W xenon lamp; and the preparation method of the CdS-loaded MIL-101(Cr) hydrogen-production photocatalyst can be obtained.
Owner:HARBIN UNIV OF SCI & TECH
Composite photocatalyst for promoting water photolysis for producing hydrogen
InactiveCN106076365AEasy transferInhibitory complexPhysical/chemical process catalystsEnergy inputHydrogenAquatic product
The invention discloses a composite photocatalyst for promoting water photolysis for producing hydrogen. The CdS / NiTiO3 composite photocatalyst is prepared through condensation-reflux introduction of a perovskite material NiTiO3 to CdS, wherein the NiTiO3 is synthesized through a sol-gel technology and is used as a cocatalyst. The composite catalyst promotes transfer of photon-generated carriers through a heterostructure formed by CdS and NiTiO3 and reduces the compounding probability of photon-generated electrons and holes, so the efficiency of water photolysis for producing hydrogen is substantially improved, and the disadvantage of photocorrosion of traditional photocatalysts is alleviated. The composite photocatalyst has the advantages of simple and easy preparation method, mild reaction conditions, and wide application prospect in the fields of development of energy alternatives of fossil fuels and high-efficiency utilization of the solar energy.
Owner:FUZHOU UNIV
Preparation method for two-dimensional ultrathin mesh-shaped ZnO nano photocatalyst
ActiveCN103349976AFacilitated DiffusionReduce compoundingMetal/metal-oxides/metal-hydroxide catalystsCentrifugationDistilled water
The invention relates to a preparation method for a two-dimensional ultrathin mesh-shaped ZnO nano photocatalyst, which comprises the following steps: 1, adding zinc acetate dehydrate, 2-2'dipyridyl and urea at the molar ratio of 1:1:5 into a mixed solution of ethanol and distilled water, performing magnetic stirring until sound dissolution, and continuously stirring for 1 hour to obtain a mixed solution with the zinc acetate concentration of 10<-3>-10<-2>M; 2, transferring the mixed solution into an inner lining of a high-pressure reaction kettle which is heated for 12 hours at the temperature of 120-180 DEG C, and obtaining white flocky precipitate; 3, allowing the white flocky precipitate to be subjected to centrifugation after being cleaned by ethanol and distilled water in sequence, and drying for 8 hours at the temperature of 60 DEG C to obtain an alkali type zinc carbonate ultrathin layer precursor; and 4, roasting the precursor obtained in the step 3 for 2 hours at the temperature of 300-500 DEG C, so as to obtain the two-dimensional ultrathin mesh-shaped ZnO nano photocatalyst. The two-dimensional ultrathin mesh-shaped ZnO nano photocatalyst prepared by the method is higher in activity.
Owner:HUZHOU TEACHERS COLLEGE
Cuprous oxide-based photocathode with enhanced nitrogen-doped back surface electric field
ActiveCN110983359AImprove performanceEasy to separateElectrolytic inorganic material coatingVacuum evaporation coatingChemical physicsPhotocathode
The invention discloses a cuprous oxide-based photocathode with an enhanced nitrogen-doped back surface electric field, wherein the structure of the photocathode comprises conductive glass, a nitrogen-doped cuprous oxide layer, a P-type cuprous oxide light absorption layer, an N-type layer, a titanium dioxide protection layer and a cocatalyst layer from bottom to top. According to the invention, the performance of the cuprous oxide-based photocathode is greatly enhanced, so that the photocurrent of the planar cuprous oxide-based photocathode under a bias voltage of 0 V vs.RHE reaches about 10mA cm<-2> and is close to a theoretical value of 14 mA cm<-2>; and the introduction of the nitrogen-doped cuprous oxide layer can replace a traditional precious metal back electrode (gold electrode) so as to substantially reduce the preparation cost of the device, so that the cuprous oxide-based photocathode has a good development prospect, and the commercial application of the cuprous oxide-basedphotocathode is expected to be promoted.
Owner:ZHEJIANG UNIV
Visible-light electrochemical analysis method by employing calixarene-modified electrode
InactiveCN102830073AEasy to detectHigh sensitivityColor/spectral properties measurementsPerturbateurs endocriniensOptoelectronics
The invention relates to a visible-light electrochemical analysis method by employing a calixarene-modified electrode. The method employs a p-tert-butylcalix[4]arene-modified TiO2 NTs electrode as a working electrode, and performs visible-light electrochemical detection on endocrine discrupting chemicals-profenofos of a real sample, with a detection sensitivity reaching 10<-9> mol.L<-1>. Compared with a conventional method, the visible-light electrochemical analysis method firstly uses p-tert-butylcalix[4]arene-functionalized TiO2 NTs in photoelectrochemical sensor electrode, particularly use in visible-light electrochemical analysis. At the same time, calixarene modification greatly improves selectivity and detection sensitivity of the electrode; interference of a plurality of co-existing small molecules can be eliminated; the detection limitation reaches to an order of magnitude of 10<-9>; the electrode is stable; and the detection method has good repeatability.
Owner:TONGJI UNIV
Stable compound semiconductor sunlight water decomposition hydrogen-production electronic device, an electrode system and a preparation method thereof
ActiveCN108922927AReduce photocorrosionStable outputFinal product manufacturePhotovoltaic energy generationWater bathsExternal bias
The invention relates to a stable compound semiconductor sunlight water decomposition hydrogen-production electronic device, an electrode system and a preparation method thereof. The sunlight water decomposition hydrogen-production electronic device sequentially comprises a substrate, a back electrode, a CZTS absorbing layer, a buffer layer, a wide-band gap semiconductor protection layer and a nanometer metal particle layer, wherein the CZTS absorbing layer is prepared by adopting a method of spraying pyrolysis and then vulcanizing and annealing; the buffer layer is prepared by adopting a chemical water bath deposition method; and the wide-band gap semiconductor protection layer is prepared by adopting the chemical water bath deposition method or an atomic layer deposition method. The preparation method is simple, and the prepared device structure can utilize solar energy, so that the high-efficiency and stable hydrogen production can be realized under the external bias voltage.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Method preparing self-supporting photo-anode based on ternary composite of cadmium sulfide/ nickel sulfide/ nickelic sulfide
ActiveCN106449149AReduce photocorrosionImprove stabilityHybrid capacitor electrodesHybrid/EDL manufactureDecompositionNickel sulfide
The invention discloses a method of preparing self-supporting photo-anode based on cadmium sulfide / nickel sulfide / nickelic sulfide ternary composites and is applied to photoelectrochemical decomposition of oxygen-making catalyst in water. The invention synthetizes the composite of cadmium sulfide / nickel sulfide / nickelic sulfide mainly by means of one-step hydrothermal method, can be used directly as a photo-anode after ethanol cleaning and nitrogen drying. The invention is mainly applied to photoelectrochemical water decomposition. A linear sweep voltammetry (polarization curve) is adopted to test the degree of catalytic activity of the composite of cadmium sulfide / nickel sulfide / nickelic sulfide. A current and voltage curve is used to test the stability of the composite of cadmium sulfide / nickel sulfide / nickelic sulfide in the light. According to the invention, the synergistic effect of a cadmium sulfide, two sulfides of nickel in cadmium sulfide / nickel sulfide / nickel trioxide is fully utilized and the stability of cadmium sulfide in photoelectrochemical decomposition water is improved, and the invention facilitates the continuous decomposition of water by the catalyst after a long period of time.
Owner:JILIN UNIV
Antiviral coating and preparation method thereof
ActiveCN113913096ARich pore structureImprove hydrophobicityAntifouling/underwater paintsPaints with biocidesPolymer sciencePhosphate
The invention relates to the field of interior wall coatings, and particularly discloses an antiviral coating and a preparation method thereof. The antiviral coating is prepared from the following components in parts by weight: 6 to 10 parts of polyurethane emulsion, 1 to 3 parts of water, 1.5 to 2.5 parts of pigment filler, 0.5 to 1 part of antibacterial agent, 1 to 3 parts of auxiliary agent, 1.2 to 2 parts of antiviral porous microspheres and 0.1 to 0.5 part of polyphosphate; the antiviral porous microspheres are prepared from the following components in parts by weight: 0.5 to 1 part of activated carbon, 0.8 to 1.2 parts of a traditional Chinese medicine extracting solution, 1 to 1.5 parts of polylactic acid, 0.5 to 0.8 part of silicon dioxide sol, 0.3 to 0.7 part of carbon nanotubes and 0.2 to 0.5 part of zinc pyrithione. The antiviral coating disclosed by the invention has the advantages of being capable of resisting viruses and degrading formaldehyde under a weak light or dark condition, strong in stain resistance and good in antibacterial property and light stability.
Owner:四川汇园宝新材料科技有限公司
Preparation method of catalyst for photocatalytic decomposition of pure water
ActiveCN114100643AReduce photocorrosionOptimizing Surface Reaction Kinetic ProgressionPhysical/chemical process catalystsHydrogen productionChemical synthesisHeterojunction
The preparation method comprises the following steps: firstly, preparing a Zn < 0.21 > Cd < 0.79 > S / D-ZnS (en) < 0.5 > heterojunction material by utilizing a solvothermal method; furthermore, two-step photochemical synthesis modification is performed on the material, and a phosphorus oxide (Pi) protective layer and different types of cocatalysts (MPi and MS) are synthesized and loaded on the surface of the material. Due to the capture effect of H2PO < 2-> on photogenerated holes, the Zn0. 21 Cd0. 79 S / D-ZnS (en) 0.5 heterojunction material is synchronously subjected to photocatalytic hydrogen production reaction in the two steps of photochemical synthesis modification. The photochemical synthesis and ion exchange co-modification method provided by the invention can be used for constructing more Zn1-xCdxS catalytic systems, and an efficient and stable process of producing hydrogen by photocatalytic decomposition of pure water is realized. The series of processes are combined, continuous application of the process of partially decomposing water through photocatalysis and the process of decomposing pure water into hydrogen through photocatalysis is achieved for the first time, and high innovativeness and practicability are achieved.
Owner:DONGGUAN UNIV OF TECH
Preparation and application of CdS/MoS2/C60C(COOH)2 ternary composite
InactiveCN108525706AEasy to prepareMild reaction conditionsWater/sewage treatment by irradiationWater treatment compoundsSemiconductor materialsBiocompatibility Testing
The invention discloses preparation and application of a CdS / MoS2 / C60C(COOH)2 ternary composite, and belongs to the technical field of inorganic material synthesis. The preparation comprises the stepsof preparing CdS and MoS2 nanomaterials separately by a simple solvothermal method, then combining the surfaces of the two nanomaterials to form a CdS / MoS2 binary composite, and finally, compoundingthe CdS / MoS2 binary composite with a C60 carboxylic acid derivative (C60C(COOH)2) through adsorption, so as to obtain the ternary composite containing different C60C(COOH)2 loadings. Fullerene is freeof toxicity and can achieve better biocompatibility and electrophilicity after being modified with carboxyl functional groups, and the surface of fullerene is loaded with CdS nanomaterials and a cocatalyst (MoS2) to promote the separation efficiency of electrons and holes in semiconductor materials, increase the degradation rate of rhodamine B of CdS / MoS2 under visible light effectively, and enhance the photocatalytic activity of semiconductor nanomaterials.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
Use of photocatalytically coated particles for decomposition of air pollutants
InactiveUS20110070138A1Reduce photocorrosionNitrogen compoundsDispersed particle separationVolatile organic compoundBrown iron oxide
The invention relates to the use of iron oxide particles coated with titanium dioxide, and in particular to their use for decomposing air pollutants photocatalytically. The invention is further directed to the use of iron oxide particles being at least partially coated with titanium dioxide, for photocatalytically decomposing air pollutants selected from nitrogen oxides (NOx) and volatile organic compounds (VOC), that come into contact with said particles.
Owner:ROCKWOOD ITALA
Preparation method for anchoring copper clusters on surface of cadmium sulfide and application thereof
ActiveCN113769761AImprove photoelectric stabilityEasy to separateHydrocarbon from carbon oxidesPhysical/chemical process catalystsCopper atomPtru catalyst
The invention discloses a preparation method for anchoring copper clusters on the surface of cadmium sulfide, and belongs to the technical field of semiconductor photocatalytic material preparation. The preparation method comprises the following steps: preparing a cadmium sulfide nanorod through a hydrothermal synthesis method, carrying out protonation treatment on the cadmium sulfide nanorod to reduce cadmium-sulfur bonding stability, forming defects on the surface of cadmium sulfide through a one-step calcination method, anchoring a solid precursor copper salt in the defects, and finally forming the cadmium sulfide-copper cluster catalyst without ligand wrapping. According to the method, the copper clusters are directly anchored on the surface of the carrier cadmium sulfide through a method for constructing cadmium defects on the surfaces of the cadmium sulfide nanorods to serve as capture sites, and the surfaces of the copper clusters anchored on the cadmium sulfide do not need to be wrapped by any ligand; through construction of direct contact between cadmium sulfide and atoms of a copper atom cluster interface, carrier transmission of a system is promoted, high surface free energy of the copper atom cluster is reduced, and high activity and high stability of the cadmium sulfide-copper atom cluster are realized.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Cadmium sulfide-sulfur indium zinc heterojunction nanorod array composite material and preparation method thereof
The invention discloses a cadmium sulfide-sulfur indium zinc heterojunction nanorod array composite material and a preparation method thereof, and belongs to the technical field of inorganic photoelectric materials. The method comprises the following steps: firstly, hydrothermally growing a cadmium sulfide nanorod array on pretreated FTO conductive glass, and then epitaxially growing a sulfur indium zinc nanosheet on the surface of cadmium sulfide by a solvothermal method to form the cadmium sulfide-sulfur indium zinc heterojunction nanorod array composite material. By controlling an indium source precursor and a zinc source precursor, sulfur indium zinc with different morphologies grows on the surface of the cadmium sulfide nanorod. The method disclosed by the invention is simple and easy to implement and good in repeatability, and the grown cadmium sulfide nanorod array is tidy and uniform in arrangement. Due to the formation of the cadmium sulfide-indium zinc sulfide heterojunction, active sites are increased, the separation of photon-generated carriers is accelerated, the photoelectric property and the stability of the cadmium sulfide nano array material are further improved, and the cadmium sulfide nano array material can be applied to the field of photoelectrocatalysis.
Owner:FUZHOU UNIV
Method for preparing ZnO/TiO2 heterojunction thin-film material through spin-coating
ActiveCN111097401ASolution areaSolve AbsorbencyCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsHeterojunctionThin membrane
The invention discloses a method for preparing a ZnO / TiO2 heterojunction thin-film material through spin-coating. The preparation method comprises the following steps: controlling the spin-coating rotation speed and the spin-coating frequency of a spin-coating zinc acetate-ethanol solution to control the uniform distribution degree and density of ZnO seed crystals, and growing ZnO nanowires on theZnO seed crystals under hydrothermal conditions to prepare the ZnO / TiO2 heterogeneous material with a nest-shaped structure. The ZnO / TiO2 film obtained in the invention has the advantages of large specific surface area, high optical absorption performance, high photoelectric efficiency and high charge transfer efficiency, and can be widely used in the fields of photoelectrocatalysis for hydrogenproduction, photoelectrocatalytic degradation of organic matters and the like.
Owner:SHANGHAI JIAO TONG UNIV
Preparation method for porous nano p-CuS/n-CdS compound semiconductor photochemical catalyst
InactiveCN102489318BImprove photocatalytic efficiencyReduce photocorrosionCatalyst activation/preparationPhotocatalytic water splittingDistillation
The invention discloses a preparation method for a porous nano p-CuS / n-CdS compound semiconductor photochemical catalyst. According to mass percents of templates of copper salt, cadmium salt, a sulfocompound and a sublimable compound and deionized water (0.001%-75%): (0.00001%-90%): (0.001%-85%): (0.001%-75%): (0.001%-98%), and sequentially subject to processes of reaction, centrifugal separation, distilled water washing, ultrasonic dispersion, centrifugal separation, ultrasonic treatment, reduced pressure distillation, drying, roasting, natural cooling, grinding and the like, the p-CuS / n-CdScompound semiconductor photochemical catalyst is obtained. On the condition that visible light and sunlight serve as light sources, the p-CuS / n-CdS compound semiconductor photochemical catalyst can be applied to hydrogen production of photocatalytic water splitting and photocatalytic degradation of organic pollutants. The preparation method is simple and practicable in process, small in investment and beneficial for popularization and application.
Owner:NANJING FORESTRY UNIV
0D/2D iron phosphide/cadmium sulfide composite photocatalyst, and preparation method and application thereof
InactiveCN110743583AReduce photocorrosionEvenly distributedPhysical/chemical process catalystsHydrogen productionPhotocatalytic water splittingVisible light photocatalytic
The invention belongs to the technical field of inorganic nanomaterial preparation, and discloses a zero-dimensional (0D) / two-dimensional (2D) iron phosphide nanoparticle / cadmium sulfide nanosheet composite visible light photocatalyst, and a preparation method and application thereof. 2D cadmium sulfide is mainly compounded, a situ one-step phosphating method is used for loading 0D iron phosphideparticles onto 2D cadmium sulfide nanosheets, the separation efficiency of photon-generated carriers of the 2D cadmium sulfide nanosheets is enhanced, and thus the catalytic activity is greatly improved. The prepared 0D / 2D iron phosphide / cadmium sulfide composite visible light photocatalyst is clear in structure and easy to product, good photocatalytic water splitting hydrogen production properties are achieved, and the hydrogen production efficiency is significantly improved; and the preparation method is simple, reliable and good in repeatability, and has good application prospects.
Owner:黄春燕
Bismuth vanadate@silver phosphate/graphene oxide composite photocatalyst as well as preparation method and application thereof
ActiveCN113070082ALarge specific surface areaTransport stablePhysical/chemical process catalystsWater/sewage treatment by irradiationHeterojunctionBismuth vanadate
The invention discloses a bismuth vanadate@silver phosphate / graphene oxide composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method comprises the following steps of: growing needle-like silver phosphate on the surface of bismuth vanadate by adopting an in-situ precipitation method to obtain bismuth vanadate@silver phosphate with a heterojunction structure; and coating the bismuth vanadate@silver phosphate with a heterojunction structure by using graphene oxide to obtain the bismuth vanadate@silver phosphate / graphene oxide composite photocatalyst. In the prepared bismuth vanadate@silver phosphate / graphene oxide composite photocatalyst, needle-like silver phosphate grows on the surface of bismuth vanadate in situ to form a heterojunction structure, and the surface of the bismuth vanadate is coated with graphene oxide nanosheets. The bismuth vanadate@silver phosphate / graphene oxide composite photocatalyst can be applied to treatment of water containing organic pollutants, the organic pollutants are subjected to photocatalytic degradation under visible light irradiation, and good stability and excellent photocatalytic activity are kept.
Owner:SHAANXI UNIV OF SCI & TECH
Preparation method of p-CuO/n-CdS/ZnS composite semiconductor photochemical catalyst
InactiveCN102125858BReduce oxidationReduce photocorrosionPhysical/chemical process catalystsHydrogen productionDistillationUltrasonic dispersion
The invention discloses a preparation method of a p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst, which comprises the steps of: firstly, with an ammonium salt, a zinc salt, a cadmium salt, thiocarbamide and deionized water as raw materials, sequentially carrying out treatments such as microwave reaction, ultrasonic dispersion, heating reaction, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain CdS / ZnS solid powder; and secondly, with the CdS / ZnS solid powder, a copper salt, alkali and deionized water as raw materials, sequentially carrying out treatments such as reaction, ultrasonic dispersion, decompression distillation, thermal treatment, washing, ultrasonic dispersion, filtering, drying, roasting, grinding and the like to obtain the p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst. Through compounding a p-type semiconductor CuO with n-type semiconductor CdS and ZnS, oxidization of holes to the CdS can be effectively reduced, the light corrosion rate of the CdS is decreased; and photoproduced electronics are effectively separated from the holes, thus the service life of the CdS is prolonged, and the photochemical catalysis efficiency of the p-CuO / n-CdS / ZnS composite semiconductor photochemical catalyst is increased. The method is simple, convenient and practical, and is beneficial to popularization.
Owner:NANJING FORESTRY UNIV
Method for preparing high stable, reproducible load type photocatalyst of Nano cadmium sulphide
InactiveCN100395025CImprove absorption and utilizationHigh reactivityPhysical/chemical process catalystsWater/sewage treatment by irradiationMaterials sciencePhotochemistry
Owner:FUDAN UNIV
Special fabric for pediatric patient clothes and preparation method of fabric
InactiveCN112458748AThe modification process is convenient and efficientGood water solubilityBiochemical fibre treatmentFilament/thread formingPolyesterYarn
The invention provides a fabric special for pediatric patient clothes and a preparation method of the fabric. The special fabric for the pediatric patient clothes is a single-layer fabric or a double-layer fabric obtained by blending and weaving antibacterial and antiviral cotton yarns and moisture-conducting and antibacterial polyester yarns. The antibacterial and antiviral cotton yarns are formed by compounding a silver-loaded fullerene derivative / titanium dioxide composite material with cotton yarns through dipping and padding processes. The moisture-conducting and antibacterial polyester yarns are prepared by carrying out low-temperature plasma pretreatment and fiber yarn forming treatment on polyester fibers with special-shaped cross sections, wherein the polyester fibers are formed by blending granulation and melt spinning of polyhexamethylene guanidine hydrochloride and polyester fiber master batches. The prepared special fabric for the pediatric patient clothes has excellent antibacterial and antiviral performance while having excellent hydrophilic performance and moisture conductivity.
Owner:郑程程
Preparation method of CuFeO2 semiconductor
InactiveCN110117796AUniform thicknessIncreasing the thicknessElectrolytic inorganic material coatingElectrodesFaraday efficiencySemiconductor
The invention provides a preparation method of a CuFeO2 semiconductor. According to the technical scheme, iron ions are doped in traditional Cu2O, the pH value of a CuFeO2 electrodeposition solution is adjusted, and CuFeO2 is deposited on ITO conductive glass to prepare the CuFeO2 semiconductor. The prepared CuFeO2 semiconductor is regular in shape, uniform in size and uniform and flat in thickness. Compared with a Cu2O semiconductor, the Faradaic efficiency of CuFeO2 semiconductor hydrogen evolution is greatly improved, the light corrosion of the semiconductor is greatly reduced, and the obtained CuFeO2 semiconductor has more excellent photostability compared with that of the Cu2O semiconductor.
Owner:FOSHAN UNIVERSITY
Polyaniline/copper sulphide composite photocatalyst with dye adsorption-catalytic degradation function as well as preparation method and application of polyaniline/copper sulphide composite photocatalyst
ActiveCN112916043AGood thermal stabilitySynthetic method is simpleWater/sewage treatment by irradiationWater treatment compoundsAmmonium sulfatePhoto catalysis
The invention discloses a polyaniline / copper sulfide composite photocatalyst with dye adsorption-catalytic degradation functions and a preparation method and application thereof, and belongs to the technical field of catalytic degradation. The preparation method of the composite photocatalyst comprises the following steps: uniformly mixing aniline and a hydrochloric acid solution through ultrasonic waves, dropwise adding an ammonium persulfate solution while stirring to generate polyaniline, and then loading a nano photocatalyst copper sulfide on the generated polyaniline by using an in-situ precipitation method. According to the polyaniline / copper sulfide composite photocatalyst obtained by the method, the molar ratio of aniline to copper sulfide is (0.5-2):1, the molar ratio of aniline to ammonium persulfate is 0.9:1, and the molar ratio of aniline to hydrochloric acid is 0.72:1. The nano photocatalyst copper sulfide is loaded on polyaniline in an in-situ precipitation manner, the method is simple and convenient to operate, and the prepared polyaniline / copper sulfide composite photocatalyst has a remarkable effect when being applied to adsorption of anionic dye wastewater and light degradation removal of cationic dye wastewater.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
ZnOxSy photocatalyst with high visible light hydrogen production activity and preparation method thereof
PendingCN114192166ASimple processing methodRaw materials are cheap and easy to getPhysical/chemical process catalystsHydrogen productionThioureaPhoto catalysis
The invention provides a ZnOxSy photocatalyst with high visible light hydrogen production activity and a preparation method of the ZnOxSy photocatalyst. The preparation method of the ZnOxSy photocatalyst comprises the following steps: carrying out high-temperature hydrothermal reaction on hydrozincite and thiourea in an aqueous solution to form a Zn-O-S compound; and further performing heat treatment to obtain the ZnOxSy photocatalyst with a stable structure. The composite photocatalyst prepared by the method is stable in structure, has good visible light absorption and fast photo-induced electron-hole transfer capability, has high activity of photocatalytic decomposition of water to prepare hydrogen, and has a wide application prospect. Equipment used in the method is simple, raw materials are cheap and easy to obtain, the technological process is simple and environment-friendly, and the method has industrial production value.
Owner:GUANGZHOU UNIVERSITY
A kind of preparation method of self-supporting photoanode
ActiveCN106449149BReduce photocorrosionImprove stabilityHybrid capacitor electrodesHybrid/EDL manufactureDecompositionElectrochemical decomposition
The invention discloses a method of preparing self-supporting photo-anode based on cadmium sulfide / nickel sulfide / nickelic sulfide ternary composites and is applied to photoelectrochemical decomposition of oxygen-making catalyst in water. The invention synthetizes the composite of cadmium sulfide / nickel sulfide / nickelic sulfide mainly by means of one-step hydrothermal method, can be used directly as a photo-anode after ethanol cleaning and nitrogen drying. The invention is mainly applied to photoelectrochemical water decomposition. A linear sweep voltammetry (polarization curve) is adopted to test the degree of catalytic activity of the composite of cadmium sulfide / nickel sulfide / nickelic sulfide. A current and voltage curve is used to test the stability of the composite of cadmium sulfide / nickel sulfide / nickelic sulfide in the light. According to the invention, the synergistic effect of a cadmium sulfide, two sulfides of nickel in cadmium sulfide / nickel sulfide / nickel trioxide is fully utilized and the stability of cadmium sulfide in photoelectrochemical decomposition water is improved, and the invention facilitates the continuous decomposition of water by the catalyst after a long period of time.
Owner:JILIN UNIV
Preparation method for organic-inorganic blend membrane
ActiveCN109174195AEvenly dispersedImprove catalytic performanceWater/sewage treatment by irradiationWater treatment compoundsReactive sitePolyethylene glycol
The invention provides a preparation method for an organic-inorganic blend membrane. The preparation method comprises the following steps: adding a polyethylene glycol solution with a solid content of0.5% to 1% into a polyurethane polymer solution with a mass fraction of 10% to 18% so as to obtain a uniformly-dispersed polyethylene glycol-polyurethane solution; adding negative oxygen ion powder with a solid content of 12% to 18%; coating release paper with an organic-inorganic mixed liquid obtained in the previous step, immersing the release paper in water, and after the organic-inorganic mixed liquid is cured to form a membrane, taking the membrane out for washing and drying; immersing the obtained polyurethane-based membrane in a silver nitrate solution and carrying out lucifugal adsorption; sequentially adding a disodium hydrogen phosphate solution and cetyltrimethylammonium bromide into the silver nitrate solution and carrying out a lucifugal reaction; and taking out the polyurethane-based membrane, and performing cleaning and drying, to obtain the organic-inorganic blend membrane. The preparation method of the invention has the following characteristics: 1, the catalytic performance of a catalyst is improved, the specific surface area of the reaction is increased, reactive sites are increased, photocorrosion is reduced, and the service life of the catalyst is prolonged;and a substrate material is safe, non-toxic and environment-friendly.
Owner:HUNAN UNIV OF SCI & TECH
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