12results about How to "Effective compound" patented technology

The invention belongs to the technical field of nanomaterials, and discloses a nanoflower-shaped FeOOH / NiFe-LDH composite material as well as a preparation method and application of the nanoflower-shaped FeOOH / NiFe-LDH composite material. The preparation method comprises the following steps: taking urea as a pH regulator, uniformly dispersing the urea, soluble nickel salt and soluble ferric iron salt in water, then adding a morphology control agent NH4F, and uniformly mixing to obtain a mixed solution; the mixed solution is subjected to a homogeneous reaction under the stirring condition, and after the reaction is finished, the nanoflower-shaped FeOOH / NiFe-LDH composite material is obtained. The preparation method is low in reaction temperature, short in reaction time and simple, the prepared composite material is of a three-dimensional structure, low in impedance and large in specific surface area, and the multi-phase composite material is multiple in charge transfer paths, high in electron migration rate, high in stability and excellent in electrochemical performance.

The invention provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. The triarylamine derivative provided by the invention has proper HOMO energy level, good hole mobility and relatively strong electron donating ability, is beneficial to hole injection and transmission, increase of carrier transmission balance and improvement of effective compounding of excitons in a luminescent layer, and meanwhile, the triarylamine derivative also has good refractive index and high glass transition temperature, and can be used for preparing a light-emitting device. The organic electroluminescent material has the advantages of good film-forming property and excellent light extraction efficiency, reduces the accumulation of Joule heat in the device, is applied to the organic electroluminescent device as a hole transport layer material or a covering layer material, obviously improves the luminous efficiency of the device, and prolongs the service life of the device. The triarylamine derivative and the organic electroluminescent device thereof have good application effect and industrialization prospect.

[Problem to be Solved] An object of the present invention is to provide a method of producing an alkenyl phosphorus compound. [Solution to Problem] The method of producing an alkenyl phosphorus compound according to the present invention is a method of allowing a specific phosphorus compound to react with a specific alkynyl compound in the presence of a transition metal complex, a Lewis acid and a low-polarity additive, to produce a specific alkenyl phosphorus compound.

The present invention provides an organic electroluminescent device, comprising a substrate, an anode, an organic layer, and a cathode. The organic electroluminescent device comprises a deuterated triamine compound represented by formula I, which has a high hole mobility and good electron blocking ability, and can not only effectively transmit holes but also effectively block electrons in the light-emitting layer, thereby achieving effective recombination of holes and electrons in the light-emitting layer; in addition, the heterocyclic compound represented by formula II is applied to the covering layer of the organic electroluminescent device, thereby improving the light extraction performance and stability of the organic electroluminescent device, and can couple out the light trapped in the device while maintaining the film stable state for a long time. Specifically, the driving voltage is reduced, the luminous efficiency is increased, and the service life is extended.

The invention belongs to the technical field of photocatalysts and preparation thereof, and particularly relates to a Zn-Zr / ZSM-5 / SrO photocatalyst and a preparation method and application thereof. The preparation method of the Zn-Zr / ZSM-5 / SrO photocatalyst comprises the following steps: dissolving Zn (NO3) 2.6 H2O and ZrO (NO3) 2.2 H2O in absolute ethyl alcohol, then adding ZSM-5, grinding and calcining the obtained white solid, dissolving the obtained Zn and Zr doped ZSM-5 in absolute ethyl alcohol, adding Sr (NO3) 22H2O, and calcining the obtained solid to obtain the photocatalyst. The Zn-Zr / ZSM-5 / SrO photocatalyst provided by the invention has the advantages of strong photocatalytic degradation capability and stable structure. The preparation method is simple and convenient to operate. The invention further provides application of the Zn-Zr / ZSM-5 / SrO photocatalyst, and the degradation rate is high.

The invention provides a triarylamine compound containing a benzimidazole structure and an organic electroluminescent device, and relates to the technical field of organic photoelectric materials. When the triarylamine compound is applied to the organic electroluminescent device as a main body material, the driving voltage of the organic electroluminescent device can be reduced, the luminous efficiency and brightness of the organic electroluminescent device can be improved, and the service life of the organic electroluminescent device can be prolonged.

The invention provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. The triarylamine derivative provided by the invention has proper HOMO energy level, good hole mobility, relatively strong electron donating ability, high glass transition temperature, good film-forming property and excellent light extraction efficiency, and can be used as a hole transport layer or a covering layer material to be applied to an organic electroluminescent device, so that hole injection and transmission can be improved, and the light extraction efficiency is improved. The composite probability of excitons in the light-emitting layer is increased, the coupling efficiency of light in the device is improved, generation of Joule heat is reduced, and therefore the light-emitting efficiency of the device is greatly improved, and the service life of the device is greatly prolonged. The triarylamine derivative and the organic electroluminescent device thereof have good application effect and industrialization prospect.

This invention discloses a furfuryl alcohol copolymer-coated ammonium polyphosphate and its application in the preparation of flame-retardant composite materials, belonging to the field of flame-retardant materials technology. The invention involves mixing furfuryl alcohol, electron-accepting monomers, crosslinking agents, and initiators with ammonium polyphosphate in a solution, causing furfuryl alcohol, electron-accepting monomers, and crosslinking monomers to precipitate and polymerize on the surface of the ammonium polyphosphate, forming a furfuryl alcohol copolymer-coated ammonium polyphosphate. This furfuryl alcohol copolymer-coated ammonium polyphosphate, as a flame retardant, can be compounded with polyurethane foam, thermoplastic polymers, and thermosetting polymers to prepare polyurethane foam flame-retardant composite materials, thermoplastic flame-retardant polymer composite materials, and thermosetting flame-retardant polymer composite materials, respectively. The furfuryl alcohol copolymer-coated ammonium polyphosphate exhibits good dispersibility in the polymer matrix, good interfacial compatibility, and is easily modified, significantly improving the flame-retardant properties of the composite material while maintaining its excellent mechanical properties.

The invention discloses a laser-induced in-situ reduction metal bismuth nanocluster modified bismuth vanadate composite photoanode and a preparation method and application thereof.The method comprises the steps that firstly, BiOI nanoparticles are deposited on a conductive substrate through an electro-deposition method, and a BiOI electrode is obtained; secondly, vanadium is introduced through a high-temperature roasting method to generate a bismuth vanadate nano-structure photo-anode; finally, metal bismuth nanoclusters are separated out on bismuth vanadate in situ through a laser-induced in-situ synthesis method, and the bismuth nanocluster modified bismuth vanadate (Bi / BiVO4) composite photo-anode is prepared. According to the preparation method, the metal bismuth nanoclusters with uniform particle sizes can be prepared and are tightly attached to the surface of the bismuth vanadate photoelectrode, effective separation of electron-hole pairs is induced due to existence of the bismuth nanoclusters, compounding of bulk phase charge carriers is inhibited, and the photoelectric water decomposition performance of BiVO4 is remarkably improved; the method is simple in synthesis process and good in repeatability, the used materials do not use any precious metal, the cost is greatly reduced, and the method has important guiding significance for large-scale commercial application in the future.

The invention provides a preparation method of a cerium oxide composite yttrium oxide material with a porous sphere morphology. ROX in water can be efficiently removed, and the exposure risk of inorganic arsenic is reduced. CeO2 / Y2O3 composite materials with three morphologies of a block shape, a hollow sphere shape and a porous sphere shape are prepared through a hydrothermal method and are named as bCeY, hCeY and pCeY respectively, and performance testing is carried out. Results show that the porous spherical material pCeY can completely remove ROX within 70 minutes under simulated sunlight, and has relatively strong adsorption capacity on inorganic arsenic. Influences of factors such as morphology, dosage, ROX concentration, pH value, coexisting anions and humic acid of the catalyst on degradation and adsorption are researched and analyzed. Results show that the degradation activity of the system is high under the acidic condition, but part of inorganic anions inhibit the degradation effect. The catalyst has excellent stability, still maintains 100% degradation efficiency after four cycles, and has a low inorganic arsenic concentration all the time. The invention provides an efficient scheme for ROX removal and inorganic arsenic exposure control, and has practical application value.

The invention belongs to the field of optical function composite material application, and discloses a preparation method of a conjugated oligomer / gold nanocluster optical energy conversion material. The preparation method comprises the following steps: synthesizing a conjugated oligomer material of which the main chain is fluorene and thiophene and the side chain contains an active group, and compounding the conjugated oligomer material with a gold nano-cluster containing a sulfydryl ligand through covalent linkage to prepare the conjugated oligomer / gold nano-cluster compound. The preparation method provided by the invention is simple and easy to implement, two semiconductor materials are effectively compounded, the size of the nano-composite is about 2 nanometers, and the nano-composite has the capability of quickly entering photosynthetic organisms and structures. The conjugated oligomer / gold nano-cluster heterojunction is cultured with photosynthetic organisms and structures, photo-induced electrons are efficiently generated under the irradiation of sunlight and rapidly transferred into electron transport chains of the photosynthetic organisms and structures, and the conjugated oligomer / gold nano-cluster heterojunction is used for improving the solar energy conversion efficiency and increasing the biomass yield and has practical application value in the field of energy conversion.

The invention relates to the technical field of fuel cell gas diffusion layers, in particular to a gas diffusion layer, a preparation method thereof and a fuel cell. The preparation method comprises the following steps: impregnating a carbon fiber two-dimensional matrix material with reinforced resin, covering a release film, coating a first microporous layer slurry containing resin, graphite, acetylene black and an organic solvent to another release film, drying, laminating the two release films, carrying out hot pressing and curing, and carrying out carbonization and graphitization to obtain a composite material layer comprising a matrix layer and a first microporous layer; and dipping the composite material layer in a first hydrophobic agent, drying, coating the surface of the first microporous layer with second microporous layer slurry containing conductive carbon black, a dispersing agent, a second hydrophobic agent and water, and sintering to form a second microporous layer, thereby obtaining the gas diffusion layer. According to the method, the surface roughness of the gas diffusion layer can be reduced, the resin impregnation amount is reduced, a mass transfer channel in a material is enlarged, the brittleness of the gas diffusion layer is reduced, the strength of the gas diffusion layer is improved, energy consumption and production cost are reduced, and the second microporous layer is not prone to powder falling.