30results about How to "Hydroxyl-rich surface" patented technology

The invention discloses a composite nanometer titanium dioxide photocatalysis material and a preparation method thereof. The method includes the steps: titanium dioxide collosol, silicon dioxide collosol and propylene glycol monomethyl ether, of which the mass ratio is 1 to 4 to 10, are uniformly mixed to form composite collosol; porous ceramics are soaked in the composite collosol for 30 minutes; and the porous ceramics are taken out to be heated for 30 minutes at the temperature of 300 DEG C so as to obtain photocatalysis ceramics loaded titanium dioxide materials. Compared with the prior art, the invention has the technical scheme that modified silicon dioxide collosol is mixed in the titanium dioxide collosol, and the existing Ti-O-Ti bond is replaced by a Ti-O-Si bond, thereby reducing the titanium oxidation-reduction potential, enabling titanium dioxide light absorption wavelength to generate redshift, and improving the visible light utility ratio of titanium as well as the adhesive power and the hardness of a coating.

The invention discloses a multifunctional catalyst, and a preparation method and application thereof. A mixture of zirconium hydrogen phosphate and titanium trioxide is taken as a carrier, a cerium-manganese-iron composite oxide is taken as a catalytic active component, and strontium oxide is taken as a cocatalyst. Based on the mass of the carrier, the mass percentage of the active component is 2-4%, and the mass percentage of the cocatalyst is 0.5-1%. The preparation method comprises the following steps: uniformly stirring the active component, a cocatalyst precursor solution and the catalystcarrier, performing aging, and then carrying out extrusion molding, drying, and roasting. The catalyst is environmentally friendly, can remove NOx in diesel engine tail gas and synergistically catalyze and remove CO and HC at a low temperature, and has a wide active temperature interval and low SO2 oxidation efficiency. The denitration efficiency of the catalyst is higher than 95% and reaches upto 100% in a temperature range of 150-350 DEG C, and the oxidation efficiency of CO and HC is higher than 90% and reaches up to 98.7% and 97.6%, respectively. The catalyst is high in cost performanceand particularly applicable to the field of low-speed diesel engine tail gas purification.

The invention discloses a ceramic membrane denitration and dioxin removal catalyst taking sludge and steel slag as raw materials and a preparation method thereof, and belongs to the field of waste product resource utilization and environment-friendly catalysis. According to the catalyst, a ceramic membrane prepared from polluting steel slag discharged from the steelmaking industry, domestic sludgeof urban sewage treatment plants, titanium source powder and a forming agent solution is used as a carrier, a tungsten-zirconium composite oxide is used as a catalytic active component, and a nickel-cobalt composite oxide is used as a cocatalyst. The ceramic membrane catalyst not only can realize resource utilization of industrial waste slag steel slag and domestic sludge of residents, but also is environment-friendly, and can realize denitration and dioxin removal at the same time.

The invention discloses a cellulose nanofibril-PBAT composite film as well as a preparation method and application thereof. The cellulose nanofibril-PBAT composite film disclosed by the invention is prepared from cellulose nanofibril, PBAT and nano soil. The preparation method of the cellulose nanofibril-PBAT composite film comprises the following steps: 1) preparing a cellulose nanofibril dispersion liquid; (2) preparing a cellulose nanofibril-nano soil mixed solution; 3) preparing a cellulose nanofibril film; and 4) dipping the cellulose nanofibril film in PBAT dispersion liquid. According to the invention, the nanocellulose fibrils are taken as a matrix and compounded with PBAT through intermolecular force, hydrogen-bond interaction and interface fusion, no chemical modification treatment is needed, and the obtained composite film has the advantages of good waterproof performance, high elongation at break, safety and environmental protection, and can be widely applied to the fields of agricultural plastic mulching films, product packaging, insulating materials, packaging materials and the like.

The invention relates to a method for catalyzing and dehydrating ethanol, which mainly solves the problem of low catalyst activity in prior art. According to the invention, an ethanol aqueous solution with 5-100% of weight percentage concentration is taken as a raw material, under the condition that the reaction temperature is 250 DEG C-500 DEG C and the volume space velocity relative to ethanol is 0.1-25 hours<-1>, the reaction raw material is contacted with a catalyst to generate ethylene, wherein the employed catalyst is mesopore Al2O3 with 1-20 nanometers of pore diameter. The technical scheme better solves the problem and can be used in industrial production of ethylene through ethanol dehydration.

The invention discloses a preparation method of a cation-modified molybdenum oxide or tungsten oxide nanowire with a large specific surface area. The preparation method comprises the following steps of: dissolving inorganic cations and a molybdenum source or tungsten source in deionized water, stirring solution, simultaneously regulating the pH value of the solution to be above an isoelectric point of molybdenum oxide or tungsten oxide by using protonic acid, then transferring into a self-pressure reaction kettle, reacting for 1-30 hours at a constant temperature of 100-240 DEG C after sealing, separating out solid products after the reaction is ended, washing, and drying to obtain the cation-modified molybdenum oxide or tungsten oxide nanowire with the large specific surface area. The cation-modified molybdenum oxide or tungsten oxide nanowire has the characteristics that the diameter is small, the distribution is narrow (3-10nm), the length-diameter ratio is more than 250, the porouseffect is achieved, the specific surface area is not smaller than 200m<2> / g, the degree of crystallinity is lower and the surface hydroxyl groups are rich and the like.

The invention discloses a micro / nano cellulose fibril / polyglycolic acid film as well as a preparation method and application thereof. The method comprises the following steps: soaking a cellulose rawmaterial in water to prepare a suspension, and carrying out ultrafine particle crushing on the suspension to obtain micro / nano cellulose fibrils to prepare a dispersion liquid; and uniformly mixing the dispersion liquid with a polyglycolic acid solution, and drying to obtain the micro / nano cellulose fibril / polyglycolic acid film. The micro / nano cellulose fibril / polyglycolic acid composite film isprepared by mixing the micro / nano cellulose fibril with the polyglycolic acid solution without using chemicals such as acid or alkali through a simple mechanical method, the preparation method is simple, the process operability is simple and convenient, and the method is suitable for industrial production. The prepared micro / nano cellulose fibril / polyglycolic acid composite film has good biodegradability and mechanical properties. The film is applied to the fields of packaging substrate reinforcement and agriculture, can reduce and eliminate white pollution, and has wide social benefits and economic values.

The invention provides a flexible anti-scaling composite filter membrane and a preparation method thereof, wherein a graphene oxide modified basalt fiber, plant nanocellulose, a lignin adhesive and a polyaspartic acid composite mother solution are subjected to vacuum filtration and the like to form a film sheet, and the film sheet is attached to the surface of a large-aperture filter membrane frame to prepare the filter membrane with strong pollution resistance. The filtering effect can reach the ultrafiltration level, and the flexibility, scale prevention, electrochemistry, high flux and film regeneration performance are also achieved, and meanwhile mother liquor can be recycled. According to the preparation method, the graphene oxide modified basalt fibers can be uniformly dispersed in water, so that respective excellent characteristics of the inorganic fibers and the organic fibers are fully exerted.

The invention provides a preparation method of a lithium-sulfur battery diaphragm. The method comprises: firstly, blending and weaving glass fibers, polyamide fibers and water-soluble vinylon fibers into a base film; securing basic strength, then preparing gel slurry from polyurethane fibers, nano microcrystalline cellulose, carboxyl polystyrene microspheres, sodium lignin sulfonate, tetraethyl orthosilicate and the like as raw materials, and extruding the gel slurry to two surfaces of the base membrane; finally, obtaining the diaphragm suitable for the lithium-sulfur battery through a seriesof post-treatment. The thickness, the strength, the porosity and the like are considered, the shuttle effect is inhibited, and the electrical property of the lithium-sulfur battery is greatly improved.

The invention relates to a method for preparing titanium dioxide / cellulose nano composite microspheres in situ, which comprises the following steps: adding a pre-hydrolyzed tetrabutyl titanate solution into a cellulose solution to obtain a pre-prepared solution, and preparing nano composite cellulose microspheres of in-situ mineralized amorphous titanium dioxide by an inverse emulsion method. The amorphous titanium dioxide prepared by the method can expose more active sites, and the adsorption performance of the amorphous titanium dioxide is far higher than that of microspheres prepared by a traditional blending method. The composite microsphere shows the characteristic of accelerated degradation efficiency in the degradation process of rhodamine B. The matrix is wide in source, green and environment-friendly, the solvent system is non-toxic and cheap, the material preparation process is simple, the process is easy to master, the production cost is low, and the huge potential of large-scale production is achieved.

The invention discloses a three-dimensional layered chromium hydroxide monohydrate nanosphere and a preparation method thereof. The preparation method comprises the following steps: preparing a neutral or alkaline aqueous solution containing a hexavalent chromium compound and a reducing agent as a reaction solution, carrying out a hydrothermal reaction on the reaction solution at 200-280 DEG C, and carrying out post-treatment to obtain the three-dimensional layered chromium hydroxide monohydrate nanospheres. The three-dimensional layered chromium hydroxide monohydrate nanosphere has a unique microstructure, controllable size and strong acid and alkali resistance, has a large specific surface area and abundant surface hydroxyl groups, has the advantages of good dispersibility, high stability, good filtration performance and the like, has a wide application prospect, is simple in preparation process and easy to implement, and is suitable for industrial production. The cost is low, the controllability is good, and the requirements of industrial production can be well met.

The invention discloses ultrathin facial-mask paper with high water retention and high softness, a preparation method and application thereof. The method comprises the following steps of: (1) placingplant-fiber paper pulp into buffering solution to soak for 1-48 hours, then washing to be neutral, then adding water to dilute, and obtaining plant-fiber paper pulp I, wherein the buffering solution is aqueous mixed solution of citric acid and sodium hydroxide, and the mass concentration of the plant-fiber paper pulp I is 0.1%-5%; (2) adopting an ultrafine-particle crusher to crush the plant-fiberpaper pulp I obtained in the step (I), and obtaining cellulose nanofibril; (3) adding a softening agent into the cellulose nanofibril obtained in the step (2), carrying out paper making and drying after uniformly stirring and mixing, and obtaining the ultrathin facial-mask paper with high water retention and high softness. The ultrathin facial-mask paper disclosed by the invention has the beneficial effects that base materials with biodegradability are adopted, so that no influence is caused on the environment, and the prepared facial-mask paper not only has good air permeability and softness, but also has excellent water retention and adsorbability.

The invention relates to a pulse electrolysis reactor. The pulse electrolysis reactor includes an electrolysis cell body, a plurality of electrode plates and a pulse power supply, an electrolysis space is formed in the electrolysis cell body, and the plurality of electrode plates are arranged in the electrolysis space at intervals along the flow direction of sewage so that sewage overflows from the bottom of each electrode plate to the top of the electrode plate to one of the electrode plates downstream, and the pulse power supply is electrically connected to at least two of the electrode plates, so that The opposite sides of each of the electrode plates have different polarities respectively. The pulse electrolysis reactor consumes less energy and has higher efficiency. The invention also provides an industrial sewage treatment system.

The invention discloses a micro / nano cellulose fibril / polyglycolic acid film, a preparation method and application thereof. The method comprises the following steps: soaking the cellulose raw material in water, preparing a suspension, pulverizing the superfine particles of the suspension to obtain micro / nano cellulose fibrils, and preparing a dispersion; mixing the dispersion with polyglycolic acid solution Mix evenly and dry to obtain micro / nano cellulose fibrils / polyglycolic acid film. The present invention prepares micro / nano cellulose fibrils by a simple mechanical method without using chemicals such as acids or alkalis, and mixes them with polyglycolic acid solutions to prepare micro / nano cellulose fibrils / polyglycolic acid composite films. The method is simple and the process is easy to operate, and the prepared micro / nano cellulose fibril / polyglycolic acid composite film has good biodegradable characteristics and mechanical properties. The film can reduce and eliminate white pollution when applied to packaging substrate enhancement and agricultural fields, and has broad social benefits and economic values.

The invention relates to a method for synthesizing orange peel cellulose-based transition metal cation surface imprinted polymer. Firstly, orange peel pretreatment is carried out, the orange peel is dried, crushed, and sieved to obtain 100-mesh orange peel powder, which is extracted with ethanol for flavonoids, alkalized and alcoholized to obtain hydroxylated orange peel cellulose with a larger specific surface area . Aldol condensation reaction is used to graft alkyl groups on the surface of orange peel cellulose, and the electrophilic substitution reaction between alkyl groups and amino groups is used to obtain adsorption sites with complexing effects on transition metal cations. Afterwards, the target ions are added to complex with the adsorption sites on the surface of orange peel cellulose. After the adsorption is balanced, a cross-linking agent is added to cross-link, and the adsorption sites and target ions are surrounded to form a semi-closed space. Finally, a certain proportion of mixed HCl and thiourea solution was added as a regeneration agent to remove the target ions to obtain a surface-imprinted polymer that can recognize the target cation.

The invention discloses a sodium-manganese water purifying material as well as a preparation method and application thereof. The preparation method is characterized by using raw products of manganese mines as raw materials, mixing the raw products with a strong oxidant uniformly under the strongly acidic condition, then carrying out hydrothermal reaction and carrying out cooling, filtering, washing, drying and roasting, thus obtaining the granular water purifying material. The water purifying material obtained by the method has stable properties, good brittleness, nanoscale single crystals, large surface area and better adsorption and catalytic oxidation activities, is simple and convenient in process and lower in raw material cost, can not pollute the environment in the production process and is suitable for industrial production.

The invention discloses a sodium holmium tungstate nano water treatment catalyst and a preparation method thereof. According to the method, with ammonium metatungstate, citric acid monohydrate, holmium chloride, sodium chloride and deionized water as raw materials, the holmium sodium tungstate catalyst is prepared through a supercritical hydrothermal synthesis method. The catalyst disclosed by the invention is environment-friendly and low in cost, can efficiently catalyze and reduce water pollutants such as p-nitrophenol, methyl orange and methylene blue, has the advantages of long service life, simplicity in regeneration and the like, and has a wide market application prospect.

The invention provides a solvothermal synthesis method for a FTO conductive material. The solvothermal synthesis method comprises the following steps: dissolving a tin salt in an alcohol solvent and then adding an oxidizing agent and fluoride to prepare solvothermal mother liquor; adding elemental tin, stannous oxide or stannous hydroxide to solvothermal mother liquor, carrying out thorough mixing, and transferring all the materials into a closed pressure vessel with high corrosion resistance; heating the closed pressure vessel and performing a solvothermal reaction at 110-290 DEG C for 0.5-96hours, wherein the reaction can be completed at a single temperature at a time or be completed in stages at different temperatures; and after the solvothermal reaction is completed, cooling the obtained material to room temperature, washing the material with water, and then drying the material at 50 to 220 DEG C to obtain the FTO conductive material.

The invention discloses a high-performance triangular belt. The triangular belt comprises a strong layer, the upper portion of the strong layer is provided with a stretching layer, a compression layeris arranged at the lower portion of the strong layer, and the outer side of the stretching layer and the outer side of the compression layer are wrapped with a wrapping cloth layer. The strong layeris made of surface modified tempered monofilament. The tempered monofilament is adopted as the material of the strong layer, and stretching and other stress generated in the triangular belt running process are improved; meanwhile, the primer material formula is optimized, the physical mechanical performance and bending resisting and fatigue resisting performance of the material are improved, the triangular glue production technology is optimized and strictly controlled, the material technology efficiency is improved, and accordingly the product quality and character are improved.

The invention relates to a method for preparing ethene by catalyzing ethanol dehydration, and mainly aims to solve the problem of low activity of catalysts in prior art. The method comprises the steps of: taking an ethanol aqueous solution with a weight percent concentration of 5-100% as the raw material, at a reaction temperature of 250-500DEG C, and under the condition of a volume space velocity of 0.1-25h<-1> relative to ethanol, contacting the reaction raw material with a catalyst so as to generate ethane, with an Al2O3 nanotube with a diameter of 3-12 nanometers as the catalyst. The technical method can well solve the above problem, and can be used for ethene preparation through ethanol dehydration.

The invention relates to a method for preparing ethene by catalyzing ethanol dehydration, and mainly aims to solve the problem of low activity of catalysts in prior art. The method comprises the steps of: taking an ethanol aqueous solution with a weight percent concentration of 5-100% as the raw material, at a reaction temperature of 250-500DEG C, and under the condition of a volume space velocity of 0.1-25h<-1> relative to ethanol, contacting the reaction raw material with a catalyst so as to generate ethane, with an Al2O3 nanotube with a diameter of 3-12 nanometers as the catalyst. The technical method can well solve the above problem, and can be used for ethene preparation through ethanol dehydration.

The invention relates to a lithium-ion imprinted polymer and a preparation method thereof, and particularly provides a method for preparing an imprinted polymer which has high selective adsorption performance on lithium ions and prepared by performing grafting modification on orange peel cellulose serving as a substrate. The preparation method comprises the following steps: performing pre-treatment on the orange peel cellulose to obtain alkalified and alcoholized orange peel cellulose; performing alkylation and grafting reaction to obtain modified orange peel cellulose with a high-activity adsorption site; then, adding the modified orange peel cellulose into the aqueous solution of lithium ions; after adsorption equilibrium, adding a cross-linking agent for cross-linking and enclosing the adsorption site and the lithium ions to form a semi-closed space; finally, eluting the lithium ions by using a reclaiming agent to obtain the lithium-ion imprinted polymer with the high selective adsorption performance. The lithium-ion imprinted polymer has the advantages of low cost, stable performance, high selective adsorption performance on the lithium ions and the like, and is expected to be widely applied to the field of salt lake chemical industry, new energy and environmental protection to realize high-efficiency enrichment and extraction of the lithium ions.

The invention relates to an adsorbent for removing heavy metals and ammonia nitrogen in waste water as well as a preparation method thereof. The invention is characterized in that the adsorbent comprises the following chemical compositions in percentage by weight: 30-80% of catalyst residues, 10-30% of an additive, and 10-40% of clay. The preparation method of the adsorbent comprises the following steps: A: the additive and the clay are added into the catalyst residues with fully and uniformly stirring, spray drying is carried out for moulding, and the median diameter of spray microballoons is 50-60[mu]m; B. the materials in the step A are calcinated for 0.5-5 hours at 500-1000 DEG C; C. water, the additive and the clay are added into the calcinated materials in the step B with fully and uniformly stirring, band extrusion or ball rolling or tabletting and other modes are carried out for moulding, drying is carried out, the drying temperature is 100-150 DEG C, the drying time is 10-24 hours, and the adsorbent is prepared. The method has the advantages of simple preparation technological processes, low cost, high-efficient removal of heavy metals and ammonia nitrogen and other poisonous and harmful pollutants in waste water, simple treatment method, wide application scope, stable effect, and wide application prospects; the method meets the green and environmental protection principles of treatment of wastes with wastes.

The invention discloses an immobilized metal organic catalyst for a disproportionation reaction, and a preparation method thereof. The method comprises the following steps: adding a carrier into an organic metal solution, adding an organic solvent, carrying out heating reflux for 5-12 h, filtering, washing, and carrying out vacuum drying overnight to obtain the immobilized metal organic catalyst.The catalyst can be used in an experiment for preparing diphenyl carbonate through the disproportionation reaction of methyl phenyl carbonate, and is obtained by immobilizing an organic catalyst on asolid carrier. The method further solves the problem that a homogeneous catalyst is difficult to separate and utilize, the catalyst has very high catalytic activity on the disproportionation reactionof methyl phenyl carbonate, and the product selectivity can be greater than 99%.

The invention discloses a preparation method of a compound modified starch adhesive. Through the preparation method of the compound modified starch adhesive, modified Fe-SSZ-13 molecular sieve nanoparticles, furfural resin, corn starch and nitrile rubber are used as raw materials. The method comprises the following preparation processes: adding the Fe-SSZ-13 molecular sieve nanoparticles, adding an albumen powder / nitrile rubber / natural rubber compound material, and preparing the compound modified starch adhesive through methods of oxidation modification method, physical compounding and the like. The compound modified starch adhesive prepared by the method has the advantages of stable chemical property, low consumption, easily available raw materials, low production cost, high water resistance, high shearing strength and good popularization and application value.

The invention discloses a composite nanometer titanium dioxide photocatalysis material and a preparation method thereof. The method includes the steps: titanium dioxide collosol, silicon dioxide colloThe invention discloses a composite nanometer titanium dioxide photocatalysis material and a preparation method thereof. The method includes the steps: titanium dioxide collosol, silicon dioxide collove power and the hardness of a coating.ive power and the hardness of a coating.sol and propylene glycol monomethyl ether, of which the mass ratio is 1 to 4 to 10, are uniformly mixed to form composite collosol; porous ceramics are soaked in the composite collosol for 30 minutes;sol and propylene glycol monomethyl ether, of which the mass ratio is 1 to 4 to 10, are uniformly mixed to form composite collosol; porous ceramics are soaked in the composite collosol for 30 minutes; and the porous ceramics are taken out to be heated for 30 minutes at the temperature of 300 DEG C so as to obtain photocatalysis ceramics loaded titanium dioxide materials. Compared with the prior arand the porous ceramics are taken out to be heated for 30 minutes at the temperature of 300 DEG C so as to obtain photocatalysis ceramics loaded titanium dioxide materials. Compared with the prior art, the invention has the technical scheme that modified silicon dioxide collosol is mixed in the titanium dioxide collosol, and the existing Ti-O-Ti bond is replaced by a Ti-O-Si bond, thereby reducint, the invention has the technical scheme that modified silicon dioxide collosol is mixed in the titanium dioxide collosol, and the existing Ti-O-Ti bond is replaced by a Ti-O-Si bond, thereby reducing the titanium oxidation-reduction potential, enabling titanium dioxide light absorption wavelength to generate redshift, and improving the visible light utility ratio of titanium as well as the adhesg the titanium oxidation-reduction potential, enabling titanium dioxide light absorption wavelength to generate redshift, and improving the visible light utility ratio of titanium as well as the adhesi