70results about How to "Great absorption" patented technology

The invention discloses a method for preparing a seaweed cellulose aerogel oil absorption material and relates to a method for preparing an oil absorption material. The method comprises the following steps: I, purifying seaweed cellulose; II, preparing seaweed nano cellulose microfibril in a mechanical colloid milling mode; III, preparing seaweed cellulose aerogel; and IV, performing hydrophobic modification on the seaweed cellulose aerogel. The seaweed cellulose aerogel oil absorption material prepared by using the method is natural and pollution-free and has the advantages of high oil absorption efficiency, , good strength, simple secondary treatment and the like, and is an important development direction of novel aerogel oil absorption materials.

An improved soft gelatin formulation and process methodology that increases single Coenzyme Q10 molecules presented to the absorption channels of the small intestines by providing medium chain triglycerides, Vitamin E and natural beta carotene to Coenzyme Q10 in a soft gel capsule to increase the absorption thereof.

The invention relates to a method for preparing an oil absorption material, in particular to a method for preparing a carbon nanofiber aerogel oil absorption material from bacterial cellulose. According to the method, bacterial cellulose aerogel is modified to obtain the carbon nanofiber aerogel oil absorption material. The method comprises the following steps: culturing the bacterial cellulose; preparing the bacterial cellulose aerogel; and preparing the carbon nanofiber aerogel oil absorption material. The method for preparing the carbon nanofiber aerogel from the bacterial cellulose is simple, novel in design, high in environment-friendly biocompatibility and high in absorption efficiency, and the oil absorption material can be recycled for many times. The hydrophobic carbon nanofiber aerogel prepared by the process can widely absorb multiple organic solvents and oil products, and is high in recyclability and selectivity; the absorption rate is up to 50-300 times the self-weight of the hydrophobic carbon nanofiber aerogel.

The invention discloses a method for preparing an acetylation-modified bacterial cellulose aerogel oil-absorbent material and relates to a method for preparing an oil-absorbent material. The invention aims to provide a method for preparing an acetylation-modified bacterial cellulose aerogel oil-absorbent material and the novel oil absorbent material is prepared by carrying out acetylation surface modification on the bacterial cellulose aerogel. The preparation method comprises the following steps of firstly culturing the bacterial cellulose; secondly, acetylating the bacterial cellulose microfibrils; and thirdly, preparing the hydrophobic acetylated bacterial cellulose aerogel. The acetylation-modified bacterial cellulose aerogel oil-absorbent material provided by the invention has the advantages of simple preparation method, novel design, environment friendliness, good biocompatibility and reusability and high absorption efficiency. The oil-absorbent material has very high affinity to oil, no absorption capability to water, good phase selectivity, can absorb leaked and spilled oil and organic solvents in water and can be used as an oil-water separation material. The oil-absorbent material is easily biodegradable and causes almost no pollution to the water body.

The invention provides a conjugated Schiff base Zn (zinc) porphyrin compound, and belongs to the technical field of chemical synthesis. In the preparation method, porphyrin compound is made from nitrobenzaldehyde and pyrrole by four reaction steps of condensation, reduction, coordination and substitution. Because of a large conjugated system of Schiff base and porphyrin, the sunlight absorptivity of the porphyrin compound is improved, the maximum IPCE (incident photon-to-electron conversion efficiency) value can reach 25%, and the photoelectric conversion efficiency Eta also reaches 0.40, thus the conjugated Schiff base Zn porphyrin compound has good application prospect in preparation of a dye sensitized solar cell. Compared with the traditional ruthenium dye, the obtained conjugated Schiff base Zn porphyrin compound has the advantages that raw materials are cheap and obtained easily, synthetic process is simple, reaction condition is mild, no expensive metal raw material is used, and the effects of low cost, high yield and less environmental pollution are achieved.

Belonging to the technical field of optoelectronic devices, the invention discloses an electron transport layer material and a perovskite solar cell. The perovskite solar cell comprises an anode, a hole transport layer, an optical active layer, an electron transport layer and a cathode. The optical active layer is made of a solution processable organic-inorganic hybrid battery material with a perovskite structure, and the electron transport layer has a structure shown as the specification. According to the invention, a conjugated polymer containing a strong polar group is applied in the electron transport layer material of the perovskite solar cell to replace PCBM, TiO2 or others, and the device making cost can be lowered. Also, the side chain polymer of the contained strong polar group plays a significant cathodic interface modification role, and improves the carrier transport ability, thereby acquiring good device performance.

A preparation method of a magnetic bacteria cellulose aerogel oil absorption material, and relates to a method for preparing an oil absorption material. The aim of the invention is to provide the preparation method of the magnetic bacteria cellulose aerogel oil absorption material. A bacterial cellulose aerogel is modified into a carbon nanometer fiber aerogel oil absorption material, and magnetic particles are added to the prepared aerogel, so that magnetic substances can be conveniently used for salvage and recovery after oil absorption and are beneficial to collecting. The method comprises the steps as follows: 1, cultivation of bacterial cellulose; 2, preparation of bacterial cellulose aerogel; 3, preparation of the carbon nano fiber aerogel absorption material; and 4, preparation of the magnetic carbon nanofiber aerogel oil absorption material. The invention prepares magnetic carbon nanofiber aerogel from bacterial cellulose, the preparation method is simple, novel in design and environment-friendly, and has good biocompatibility, high absorption efficiency and convenience for fishing, and can be reused for many times.

A preparation method of an organic-inorganic hybrid super hydrophobic modified bacterial cellulose aerogel oil absorption material relates to a preparation method of an oil absorption material. The invention aims to provide the preparation method of the organic-inorganic hybrid super hydrophobic modified bacterial cellulose aerogel oil absorption material. The bacterial cellulose aerogel is subjected to organic-inorganic hybrid super hydrophobic modification to obtain the super hydrophobic aerogel oil absorption material. The method comprises the steps as follows: 1, bacterial cellulose cultivation; 2, bacterial cellulose aerogel preparation; and 3, preparation of the organic-inorganic hybrid super hydrophobic modified bacterial cellulose aerogel. The oil absorption material prepared by the invention has good selective oil absorption performance, can be conveniently used for oil-water separation or absorption of the oil spill in the water, has no pollution to the water body, and is a novel oil absorption material with great application potential.

The invention is a miura - Ori origami structure electromagnetic stealth plate of loaded graphene metamaterial unit. An electromagnetic stealth plate of the invention is prepared by immersing a substrate in a mixture of hydroquinone and graphene oxide and sealing a heat treatment so as to attach absorbing medium to the substrate; after removing and cleaning, drying by freeze treatment to obtain graphene Weaving; graphene woven cloth is immersed in an epoxy resin precursor solution, paved, heated, and cured, to get an electromagnetic stealth plate; the electromagnetic stealth plate in accordance with Miura - Ori origami method of processing creases, so that the electromagnetic stealth plate along the crease Deformation; and in the electromagnetic stealth plate on the plate surface of the super-material unit.

The present invention relates to a radiation absorption fiber and the preparing process thereof. The fiber is nano-fiber containing nanometer radiation absorption ingredients. The preparing process comprises the following steps: firstly, adding radiation ingredients into a solution of nano-fiber raw material to prepare a spinning fluid containing nanometer wave-absorption ingredient; secondly, dispersing the spinning fluid with ultrasonic waves for electrostatic spinning to obtain nano-fiber containing radiation absorption ingredients. The radiation absorption fiber of the present invention can not only absorb radiation waves of low energy, but also widely absorb radiation of high energy. With excellent flexibility, strength and elasticity, the fiber can be weaved into miscellaneous product forms and applied to radiation-protective products, industrial products, aeronautic equipments and military products.

The invention relates to a methanal purifying agent adopting visible light photocatalysis and a preparation method of the methanal purifying agent. The methanal purifying agent comprises pucherite and titanium dioxide, wherein the pucherite is loaded into the titanium dioxide, the mass ratio of the pucherite to the titanium dioxide is (0.6:100)-(0.67:100), and the crystalline phase of the pucherite is a monoclinic phase. According to the invention, the pucherite and the titanium dioxide are combined, through the synergy effect of the pucherite and the titanium dioxide, methanal can be effectively degraded within the ranges of the visible lights and ultraviolet rays, so that higher methanal purifying efficiency is achieved, and the methanal purifying agent is more suitable for practical usage.

The present invention provides a preparation method of cantharidin-loaded tumor cell membrane-encapsulated tellurium elementary substance nanoparticles and belongs to the field of nano biomedicine. The nanoparticles prepared from tellurium elementary substance as a core, cantharidin as a model drug and tumor cell membranes as an outer layer coating. The tellurium nano-material and the cantharidinhaving toxic and side effects on organisms are encapsulated by the tumor cell membranes in the nanoparticles, so that biocompatibility of the nanoparticles is improved, immune cells are effectively prevented from being cleared, and the nanoparticles have homologous targeting capability; after intravenous injection, the nanoparticles are massively gathered at tumor sites through an EPR effect and ahomologous targeting property, the tellurium elementary substance is rapidly heated under near-infrared stimulation to cause outer cell membrane rupture, and the leaked cantharidin inhibits a heat shock reaction of tumor cells, enhances a photo-thermal treatment effect of the tellurium elementary substance, and kills tumor cells. The method is reasonable in design, simple in preparation technology and wide in application prospect, and lays a foundation for design and development of a corresponding drug delivery system.

The invention discloses a preparation method of a perylene tetracarboxylic acid-graphene heterojunction based photo-anode material. The preparation method comprises the steps of (1) mixing a perylene tetracarboxylic acid DMF solution with a concentration of 0.5*10<-4>-2*10<-4> mol.L<-1> and a graphene suspension liquid with a concentration of 0.5*10<-2>-2*10<-2> mg.mL<-1> according to a proportion of 2 : 1-8 : 1 at a room temperature for 1-4 hours under the assist of ultrasonic waves, then stirring for 1-4 hours, standing for a night to produce perylene tetracarboxylic acid / graphene heterojunctions; and (2) drop casting a perylene tetracarboxylic acid / graphene heterojunction suspension liquid on the surface of a polished glassy carbon electrode and drying at a room temperature to obtain the perylene tetracarboxylic acid-graphene heterojunction based photo-anode material. The perylene tetracarboxylic acid-graphene heterojunction based photo-anode material prepared by the preparation method is a heterojunction semiconductor with active groups and can stably combine with a probe molecule, so that comprehensive analysis performance of a photoelectrochemical sensor can be improved.

The invention provides a thermosensitive polymer-modified bivalent platinum nanocluster and a preparation method and application thereof. The bivalent platinum nanocluster has a core-shell structure,the inner core comprises zero-valent platinum with divalent platinum on the surface and the shell is a temperature-sensitive polymer. The preparation method utilizes a thermosensitive polymer ligand as a template to synthesize bivalent platinum nanoclusters with different relative contents of divalent platinum and zero-valent platinum. Through adjustment and control of the relative content of divalent platinum and zero-valent platinum, the relative interaction intensity of the photothermal effect and the chemotherapy effect is precisely adjusted and controlled so that photothermal chemotherapy-combined anti-tumor effects are optimized.

The invention discloses a stannic oxide modified ferroferric oxide / multiwalled carbon nanotube network composite material, and a preparation method and application thereof. The preparation method comprises the steps that 1, a ferroferric oxide / multiwalled carbon nanotube is prepared, wherein the multiwalled carbon nanotube is acidized and mixed with ethanediol, ultrasonic dispersion is carried out, then, Fe(NO3)3.9H2O and NaAc.3H2O are added, a reaction is carried out at 200 DEG C for 10 h, aftertreatment is carried out, and the ferroferric oxide / multiwalled carbon nanotube is obtained; 2, stannic oxide modification is carried out, distilled water and SnC14.5H2O are added into the ferroferric oxide / multiwalled carbon nanotube, the mixture is sufficiently stirred to be dissolved, stronger ammonia water is dropwise added after complete dissolving, the pH is adjusted to be 10, a reaction is carried out in a reaction kettle at 160 DEG C for 18 h, and aftertrement is carried out, so that the stannic oxide modified ferroferric oxide / multiwalled carbon nanotube network composite material is obtained.

The invention discloses an n-type polymer containing a non-condensed ring receptor unit as well as a preparation method and application of the n-type polymer. The structural formula of the n-type polymer based on the non-condensed ring receptor unit is shown as a formula I, a copolymerization unit 1 is an A2-D-A1-D-A2 type non-condensed ring unit, A1 and A2 are electron deficiency units, and D isan electron supply unit; and a copolymerization unit 2 is a conjugated aromatic ring unit, and the number n of the repetitive units is a natural number of 1-10000. The polymer provided by the invention is relatively low in synthesis cost, all intermediates are simple in synthesis method and easy to purify, and the obtained polymer shows a wide absorption range and a high light absorption coefficient, can realize better optical absorption complementation and energy level matching with a p-type semiconductor material, and is applied to organic solar cells. The device has good photoelectric response performance.

The invention relates to the technical field of organic synthesis, in particular to a polymer containing DPP, thiophene and fluorothiophene structural units and a preparation method and application ofthe polymer. R in the three-component polymer is alkyl, the number of carbon atoms is 6-16, n is a natural number ranging from 1 to 100, and x is larger than 0 and smaller than 1. By adjusting the ratio of thiophene to fluorothiophene, the photoelectric material with excellent performance is obtained. Repetitive units in the polymer can enhance charge transfer in a compound and improve the sunlight capture capability and hole transport capability. The preparation method is simple and controllable, and has a good application prospect in the photoelectric fields of solar cell devices, organic electroluminescent devices, organic field effect transistors and the like.

The invention provides a starch blended cellulose aerogel as well as preparation and application thereof. The cellulose aerogel is modified by utilizing starch, and the starch blended cellulose aerogel is prepared through high pressure homogeneous blending and vacuum freeze drying. Due to the strong hydrophilicity of the starch, the starch is copolymerized with cellulose whiskers after being micronized and aged, the performance of the cellulose aerogel is improved, cheap materials are fully used, the flow of the preparation process is simplified, and a rich source is provided for the improvement on comprehensive performance of a composite. Compared with the common cellulose aerogel, the starch blended cellulose aerogel has the advantages of small density, high porosity, small volume shrinkage, good oil absorption property, excellent dynamic viscoelasticity and the like.

The invention provides a terahertz absorption switch from a double-frequency band to a wide-frequency band based on a phase change principle, which relates to the technical field of electromagnetic function absorption materials of terahertz frequency bands. The switch consists of a metal reflector layer, a dielectric layer and an artificial electromagnetic material structure layer to form an interlayer structure; the artificial electromagnetic material layer is composed of basic units of metal / phase-change material micro-nano structures which are arranged periodically, each basic unit is composed of a split ring resonator I and a split ring resonator II which are orthogonal to each other, and the split ring resonator I and the split ring resonator II are provided with a phase-change material block I and a phase-change material block II respectively. Compared with the prior art, the terahertz absorption switch device is suitable for a wider working spectrum modulation range: the absorption switch device based on the phase change principle can realize a terahertz absorption switch function from double frequency bands to wide frequency bands, and can be applied to temperature sensing;a high-efficiency absorption effect is achieved; the switch is widely applied to energy absorption; and the switch is small in size, simple in structure and easy to prepare.

The invention discloses a terpolymer containing a triazol isoindol-5,7(2H,6H)-dione unit and a preparation method and application thereof. The preparation method comprises the following step of enabling a monomer of an electron donor unit and a monomer containing the triazol isoindol-5,7(2H,6H)- dione unit to generate still coupling copolymerizing reaction, so as to obtain the ternary copolymer containing the triazol isoindoline-5,7(2H,6H)-diketone unit. The ternary copolymer containing the triazol isoindol-5,7(2H,6H)-dione unit has the advantages that the fluorescence property is realized; the absorbing range of sunlight is wider; the terpolymer can be well applied to the fields of preparation of light emitting layers of polymer light emitting diodes, polymer field effect transistors and activating layers of polymer solar batteries.

The invention discloses an A-D-A type organic small molecule and the preparation and an application thereof. Dithiophene-pyrrole is utilized as a core, and thiophthene (TT) or monothiophene is used asnovel A-D-A type small molecule DINTTDTS and DINDTS of different Pi-bridges. The DINTTDTS and the DINDTS are used as donors to prepare all-small molecule solar cells that can be subjected to solutiontreatment. A DINDTS-based device has the energy conversion efficiency of 4.52%, the current density (Jsc) of 19.96 mAcm^2 and the fill factor (FF) of 57.5%. However, a DINTTDTS-based device has the energy conversion efficiency of 2.79%, the Jsc of 8.98 mA cm^2 and the FF of 39.5%.

The invention relates to a liquid crystal composition with low viscosity and proper high optical anisotropy and a liquid crystal display element having the same. The liquid crystal composite comprises 5 to 50 percent of compound I, 5 to 50 percent of compound II, 5 to 30 percent of compound II, 5 to 20 percent of compound IV, 0 to 15 percent of compound V and 0 to 20 percent of compound VI. The liquid crystal compound can be used for manufacturing the field sequential liquid crystal display element.

The invention provides a warm white mixed fluorescent material with a color rendering index of more than 90. The material comprises Ba3MgSi2O8: Eu<2+>, Mn<2+> and Sr2SiO4: Eu<2+>. A preparation method for the material comprises the following steps: accurately weighing raw materials, mixing the raw materials, adding ethanol into the raw materials, carrying out stirring until slurry is obtained, respectively employing a high temperature microwave method for heating and cooling obtained mixtures in a high temperature microwave oven according to set heating and cooling curves, mixing two obtained products in proportion, adding anhydrous ethanol into an obtained mixture, carrying out ultrasonic vibration and drying the mixture so as to obtain the warm white mixed fluorescent material with a color rendering index of more than 90. The fluorescent material and a blue-violet light semiconductor chip can be assembled and encapsulated together so as to prepare a warm white LED with a color rendering index of more than 90. The preparation method provided in the invention has the advantages of a simple process, low cost, energy conservation, no pollution and high yield; the prepared material has stable quality and high brightness; the invention is suitable for industrial large scale production.

The invention discloses a preparation method of a PbSe quantum dot near-infrared light-emitting diode. The preparation method comprises the following steps: adding OA, ODE and PbO powder into a three-necked flask, then injecting nitrogen into the three-necked flask, and thoroughly removing air; heating the three-necked flask until the PbO powder completely disappears, and a mixed solution becomescolorless; adding an Se-TOP solution containing Se powder into the three-necked flask, and heating the three-necked flask to obtain PbSe QDs particles; adding methylbenzene into the three-necked flask, and immersing the three-necked flask in a room-temperature water bath to perform a complete quenching reaction; precipitating and dispersing a PbSe QDs sample by using methanol and ethane, purifyingthe PbSe QDs sample, then dispersing the purified PbSe QDs sample into tetrachloroethylene; and injecting a PbSe QDs solution into a hollow hemisphere through an injector, sealing the hollow hemisphere, and placing the hollow hemisphere containing the PbSe QDs solution on a GaN chip. The near-infrared light-emitting diode prepared by the method has the characteristics of simplicity in manufacturing, narrow band, small size and easiness in tuning.

The invention provides a photoinduced hydrogen production catalytic system taking graphene as an electron mediator and containing an iron-sulfur cluster compound and a preparation method and application of the catalytic system, and belongs to the field of photoinduced hydrogen production catalysts. Particularly, the photoinduced hydrogen production catalytic system taking graphene as the electron mediator and containing the iron-sulfur cluster compound comprises a metal-sulfur cluster compound and a benzoporphyrin derivative which are connected with graphene oxide (GO). According to the photoinduced hydrogen production catalytic system taking graphene as the electron mediator and containing the iron-sulfur cluster compound and the preparation method and application of the catalytic system, the defect that most of hydrogenase model compounds are not dissolved in water is overcome, and obtained graphene oxide serves as a nano material to be connected with a medium; the hydrogen yield of the system taking the nano material as the catalyst is obviously higher than other systems; in addition, the nano material does not use a noble metal catalyst, and the production cost is further reduced.

The invention relates to a long-wave broadband ultraviolet excited multi-functional fluorescent glass and a preparation method thereof; the glass comprises SiO2-aAl2O3-bB2O3-cRexOy; wherein, x=1 or 2, y=1 or 3, A=0.05 to 5, B=0 to 2.5, C=0.01 to 0.2 and x, y, A, B and C are molar ratio; RexOy is EuO, Eu2O3 or Tb2O3. By using the preparation method of the invention, high transparent multi-functional fluorescent glass can be prepared under a simpler process conditions, the fluorescent glass has very strong 250nm-420nm of ultraviolet light absorption capacity and the emission of red, green, blue and white lights can be realized by regulating the production process. The fluorescent glass can be used as the source of three primary colours in the white light light-emitting diode (LED), the laser diode (LD) and the displays and is likely to be used in ultra large screen color displays.

The invention relates to an efficient water-saving irrigation device. A rainwater collection device, a first water accumulation box, a second water accumulation box and an out-water distribution system are improved so that rainwater can be comprehensively utilized as irrigation water, and the high-chloride defect of tap water for irrigation can be weakened; meanwhile, a solar panel is arranged, and it is guaranteed that the whole device does not need extra energy cost. The material of a water storage box is improved, high corrosion resistance and high strength can be maintained under the situation of long-term damp, and thus the overall durability of the irrigation device is guaranteed.

The invention is an air filter, which arranges a wind inlet and a outlet, there arranges a fan driven by motor in the wind channel between the inlet and the outlet, an air filter film with thickness thicker than 1mm in the wind channel, the structure of the film is bag type or box type, in which the carrier containing air filter compound is filled. The composition of the compound is: equal quantity of component A and component B and proper quantity of carrier, A is made up of FeSO4, FeCl2, L-ascorbic acid, and water; the component B is made up of ZnCl2, FeCl2, CaCl2, AlCl3, MgCl2, KCL and water. The confected A and component B are absorbed onto the carrier respectively when in use, it can be used after being dried.