20 results about "Iodate" patented technology

The invention relates to a 1D / 2D dual-heterojunction catalyst, a preparation method thereof and application of the 1D / 2D dual-heterojunction catalyst in photo-assisted periodate activated degradation of bisphenol A. The preparation method comprises the following steps: mixing a concentrated hydrochloric acid solution with LiF, adding Ti3AlC2, carrying out a heating reaction, carrying out solid-liquid separation to obtain a solid phase, washing the solid phase to be neutral, and dispersing the solid phase in ethanol to obtain an MXene ethanol solution; adding a cerium source aqueous solution into an MXene ethanol solution, mixing, and placing in liquid nitrogen to obtain a mixed solution; mixing an organic ligand, ethanol and pure water to obtain a mixed solution, carrying out a mixed heating reaction on the mixed solution and the mixed solution, carrying out solid-liquid separation to obtain a precipitate, and freeze-drying to obtain powder; and heating and calcining the obtained powder in an inert atmosphere to obtain the 1D / 2D dual-heterojunction catalyst. According to the invention, photogenerated electron-hole recombination is effectively inhibited by constructing double heterojunctions, and ultrafast electron transfer is realized at the same time, so that the oxidation effect is enhanced, and the efficient photocatalytic activity of '1 + 1gt, 2' is realized.

The invention provides a method for preparing formamidine hydriodate through a one-pot method, formamidine hydriodate and application of formamidine hydriodate, and particularly relates to the technical field of perovskite photovoltaic cell precursor material preparation. The method comprises the following steps: adding an iodine elementary substance and a solvent into a reaction container, dropwise adding a reducing agent to carry out a first reaction, adding formamidine acetate in batches to carry out a second reaction at 0-10 DEG C after the reaction is completed, and carrying out post-treatment purification after the reaction is completed to obtain the formamidine hydriodate. The method directly selects the iodine elementary substance as the raw material, so that the use cost of the raw material is effectively reduced; one-pot integrated reaction is adopted in the preparation process, intermediate separation is not needed, the opportunity that metal impurities are introduced due to multiple transfer and purification operations in a traditional method is reduced, and the content of the metal impurities in the product can be reduced; distillation and other steps with high energy consumption and long time consumption are omitted, so that the reaction period is shortened, and the energy consumption is reduced.

The present application relates to a kind of 1D / 2D double heterojunction catalyst and its preparation method and its application in photo-assisted high iodate activation degradation bisphenol A.The preparation method of the present application: concentrated hydrochloric acid solution and LiF are mixed, Ti3AlC2 is added, heated reaction, solid-liquid separation is taken solid phase, after washing to neutral, dispersed in ethanol, to obtain MXene ethanol solution;Cerium source aqueous solution is added to MXene ethanol solution and mixed in liquid nitrogen, to obtain mixed solution;Organic ligand, ethanol and pure water are mixed to obtain mixed solution, the mixed solution and mixed solution are mixed and heated, solid-liquid separation is taken precipitate, freeze-drying is obtained powder;The obtained powder is heated and calcined under inert atmosphere, to obtain 1D / 2D double heterojunction catalyst.The present application effectively inhibits photo-generated electron hole recombination by constructing double heterojunction, while realizing ultrafast electron transfer, to enhance oxidation, realizes the high-efficiency photocatalytic activity of "1+1>2".

The application discloses a preparation method of a wide-bandgap perovskite photoactive layer, and comprises the following steps: S1, lead iodide powder, cesium iodide powder and ytterbium bromide powder are proportioned according to a proportioning molar ratio, and an inorganic target material is prepared by using a hot-press sintering process; S2, formamidinium hydriodide powder and methylammonium bromide powder are proportioned according to a proportioning molar ratio, and an organic target material is prepared by using a normal-temperature preparation process; S3, a pretreated substrate is placed on a magnetron sputtering sample table, the target materials prepared in steps S1 and S2 are respectively installed on corresponding radio frequency sputtering targets, and the background of a magnetron sputtering system is vacuumized; S4, high-purity argon gas is used as a sputtering gas, and a wide-bandgap perovskite thin film is prepared by using a magnetron co-sputtering method; the sputtering power of the inorganic target material prepared in step S1 is controlled, the sputtering power of the organic target material prepared in step S2 is controlled, and the thickness of the thin film is controlled, so that the high-quality thin film is prepared by using the differential target material preparation process.

The invention relates to a perovskite precursor solution, a perovskite thin film, a preparation method of the perovskite thin film and a photovoltaic module. The perovskite precursor solution comprises a perovskite precursor, an additive and a mixed solvent; the perovskite precursor is prepared from formamidine hydriodate and lead iodide; the additive comprises cesium iodide and methylamine hydrochloride; the mixed solvent is prepared from N, N-dimethyl formamide, N-methyl pyrrolidone and cyclohexyl pyrrolidone. The composition of the perovskite precursor solution is blended, the high-quality perovskite thin film with the micro-suede surface is spontaneously formed in the perovskite crystallization process, the micro-suede surface structure can increase the contact area between a perovskite layer and a subsequent functional layer, a tight mechanical interlocking effect is generated between the micro-suede surface structure and the interface of the functional layer, and the performance of the perovskite thin film is improved. Therefore, the interface adhesive force of the subsequent functional layer and the metal electrode is obviously improved, and the problem of performance degradation of the perovskite assembly caused by the packaging process is solved.

This invention relates to the field of alkali metal-chlorine secondary battery technology, and discloses an electrolyte additive, an electrolyte, and an alkali metal-chlorine secondary battery. The additive contains components A, B, and C in a mass ratio of 1:0.2-2.0:0.5-3.0; component A is selected from at least one of ethyl viologen dibromide, benzyl viologen diiodide, and 1,4-phenylenediamine hydroiodate; component B is selected from at least one of 3-(4-iodophenyl)-3-(trifluoromethyl)-3H-bisacrylidine, 1-bromo-2-fluorobenzene, and 4-(benzyloxy)-1-bromo-2-fluorobenzene; and component C is selected from at least one of 3-(trifluoromethyl)phenyltrimethylammonium bromide, (3-fluoro-4-iodophenyl)methylamine, and 3-iodobenzylamine. The electrolyte provided by this invention, when applied in an alkali metal-chlorine secondary battery system, exhibits high reversible capacity, cycle stability, and environmental adaptability.

The invention discloses a trigonelline metformin salt and a preparation method thereof, and the preparation method comprises the following steps: providing a resin column filled with anion exchange resin, treating the resin column with a salt solution for ion replacement activation to obtain an activated resin column, anions of the salt are chloride ions, bromide ions, acetate ions, malate ions, lactate ions, tartrate ions or citrate ions; enabling the trigonelline metformin iodized salt solution to pass through an activated resin column, and selectively collecting the exchanged solution; and carrying out concentration treatment on the collected exchanged solution to obtain the trigonelline metformin salt. In combination with a specific embodiment, compared with a trigonelline metformin iodate, the solubility of the trigonelline metformin salt prepared by the preparation method of the trigonelline metformin salt provided by the invention in water is greatly improved, so that the application range of the trigonelline metformin salt is greatly expanded.

The invention discloses a methylamine formamidino perovskite single crystal, a preparation method thereof and an X-ray detector, and belongs to the technical field of perovskite single crystal X-ray detectors. Methyl iodide amine, formamidino hydriodate and lead iodide are used as raw materials, anhydrous acetic acid is used as an additive, growth is carried out in a solvent through a seed crystal method, and the methylamine formamidino perovskite single crystal is obtained. Anhydrous acetic acid and formamidine generate hydrogen-bond interaction, formamidine is pulled to enter crystal lattices, so that phase separation is eliminated, acetate and Pb coordinate to delay formation of a lead-iodine framework, the speed of methylamine and formamidine entering the crystal lattices is balanced, meanwhile, the stability of a methylamine formamidine perovskite precursor solution is improved, stable growth of methylamine formamidine perovskite single crystals is achieved, and the methylamine formamidine perovskite single crystals are obtained. The single crystal has the advantages of high crystallinity, low defect density, large size and favorable X-ray response performance. The methylamine formamidine perovskite single crystal is high in controllability in the growth process, and the preparation method is high in operability, simple and easy to implement, short in preparation period, low in equipment requirement and low in cost.

This invention discloses a method for preparing inorganic perovskite thin films assisted by cystamine dihydrochloride. This invention relates to the field of optoelectronic materials and devices, and includes the following specific steps: Step 1: Weigh cesium iodide, lead iodide, and dimethylamine hydroiodide as raw materials, select DMF as the solvent, and then slowly add these raw materials to the DMF solvent. Stirring is performed at room temperature to obtain an inorganic perovskite precursor solution. The advantages of this invention are: by selecting cesium iodide, lead iodide, and dimethylamine hydroiodide in the inorganic perovskite precursor solution, it provides the basic elements for constructing the perovskite crystal structure, ensuring that the thin film possesses basic optoelectronic properties. It enhances the adhesion between the thin film and the substrate, effectively alleviates stress caused by differences in thermal expansion coefficients, and greatly suppresses the structural phase transition of the thin film under high-temperature conditions, successfully solving the problem of a sharp decline in the optoelectronic performance of thin films at high temperatures in existing technologies.

The invention discloses a multifunctional hair cosmetic active raw material as well as a preparation method and application thereof. The active raw material is cystine dimaleate amide. The disulfide bond-containing molecule with a symmetric maleic acid structure is used as a sulfydryl reconnection reagent, so that a traditional oxidized sulfydryl reconnection reagent represented by hydrogen peroxide, bromate, iodate and the like is avoided, the content of the disulfide bond in hair is maintained while the hair is shaped, and particularly, after multiple times of perming, the hair is more comfortable to use. Compared with the prior art that a large amount of disulfide bonds are consumed after perming, the supplement and the shaping method are used for perming, so that the hair can be effectively and repeatedly permed according to the willingness of consumers, and the hair styles can be changed for multiple times.

This invention relates to a 3D dual heterojunction catalyst hydrogel, its preparation method, and its application in photo-assisted periodate-activated degradation of organic pollutants. The preparation method of the 3D dual heterojunction catalyst hydrogel of this invention involves: mixing acid and LiF, adding Ti3AlC2 for heating and reaction, separating the solid phase, dispersing the obtained solid phase in an organic solvent to obtain an MXene solution; mixing a cobalt salt solution with the MXene solution and placing it in liquid nitrogen to obtain a precursor solution; mixing and stirring a dimethylimidazole aqueous solution with the precursor solution; separating the solid and liquid phases of the reaction solution to obtain the precipitate, calcining it under an inert atmosphere, mixing it with chitosan colloid, and adding an alkaline solution dropwise to obtain the 3D dual heterojunction catalyst hydrogel. This invention combines the excellent conductivity of MXene with the synergistic effect of the large specific surface area of ​​MOF and Cs, realizing an ultrafast electron transport channel and significantly improving the utilization efficiency of photogenerated carriers.

The application discloses a preparation method of a double-layer composite material and application thereof, and the preparation method of the double-layer composite material comprises the following steps: dissolving formamidinium hydriodide, methylammonium iodide, lead iodide, stannous iodide and an additive in a mixed solution of dimethylformamide and dimethyl sulfoxide to prepare a perovskite precursor solution; coating the perovskite precursor solution on a substrate in a spin coating mode; treating the precursor solution with an anti-solvent during the spin coating process to obtain an intermediate phase thin film; and performing annealing treatment on the intermediate phase thin film to obtain a fully crystallized double-layer perovskite thin film. By using the method, the problems that the existing perovskite battery has poor absorption to near-infrared light, the photoelectric conversion efficiency is reduced, the utilization rate of light is not high, the device temperature is increased, and the application field is limited, and the existing double-layer perovskite thin film is prepared in layers, the preparation process is increased, and the production efficiency of the battery is reduced and the like can be solved.

The application provides a preparation method and device of methylamine hydroiodide. The preparation method of the methylamine hydroiodide comprises the following steps: mixing hydrogen iodide gas and methylamine gas to obtain methylamine hydroiodide. Through direct reaction of the hydrogen iodide gas and the methylamine gas, the solid methylamine hydroiodide is obtained, no other impurities are generated in the reaction process, the obtained methylamine hydroiodide has high purity, no additional purification is needed, the process is simple, and cost is saved.

An alkaline high-valence iodine flow battery with adjustable capacity based on light intensity for large-scale energy storage is disclosed. The purpose of this invention is to address the issues of reduced battery life and capacity caused by the precipitation of elemental iodine in current acidic and neutral iodine flow batteries by forming iodate and periodate salts. The alkaline high-valence iodine flow battery with adjustable capacity based on light intensity for large-scale energy storage comprises a stack consisting of one or more single cells. Each single cell includes a positive electrolyte, a negative electrolyte, two light-proof storage tanks, a fixed end plate with a quartz window, a current collector fixed end plate with an S-shaped flow channel, a gasket, an ion sieving membrane, a positive electrode, a negative electrode, and a photocatalytic material. This invention provides an alkaline high-valence iodine flow battery with adjustable capacity based on light intensity for long-term large-scale energy storage. This flow battery is compatible with multiple charge / discharge modes and can be quickly adjusted to accommodate fluctuations in the energy to be stored.

The invention relates to the technical field of battery materials, in particular to an electrolyte additive, an electrolyte, a preparation method of the electrolyte and an aluminum air battery, and the electrolyte additive comprises peroxide, persulfate or iodate. The concentration of the peroxide ranges from 0.01 mol / L to 0.6 mol / L, the concentration of the persulfate ranges from 0.01 mol / L to 1 mol / L, and the concentration of the iodate ranges from 0.01 mol / L to 1 mol / L; the electrolyte additive peroxide, persulfate and iodate provided by the invention have relatively strong oxidability, and after the electrolyte additive peroxide, persulfate and iodate are added into an alkaline electrolyte or a neutral electrolyte, the peroxide, persulfate and iodate are simultaneously reduced besides oxygen is reduced at an air cathode in a discharge process, so that a cathode depolarization process is accelerated, and the discharge efficiency is improved. And the dynamic reaction speed of the cathode is increased, so that the power density of the aluminum-air battery is improved.

The invention provides an electrolyte, a battery, a battery pack and electric equipment, the electrolyte comprises azabowl-ene alkyl ammonium iodate, and the azabowl-ene alkyl ammonium iodate comprises a compound with a structure as shown in a formula 1. The electrolyte provided by the invention can inhibit lithium precipitation and self discharge of the battery, and improve the cycle life and other performances of the battery.

The present invention relates to a melamine iodate second-order nonlinear optical crystal material and its preparation and application. The crystal material has a chemical formula of (C3N6H7)(IO3), a molecular weight of 302.05, belongs to the monoclinic system, has a space group of Cc, unit cell parameters of α=90°, β=96.24-96.44°, γ=90°, Z=4, and a unit cell volume of 1000 nm. The melamine iodate crystal material of the present invention has excellent optical properties. Under 1064 nm laser irradiation, the powder frequency harmonic intensity is approximately 3.5 times that of KH2PO4 crystal, and phase matching can be achieved. In addition, the crystal material has a short ultraviolet absorption cutoff edge (269 nm) and has important application value in photoelectric conversion fields such as lithography, spectral analysis, environmental monitoring, and laser frequency conversion.

Due to the unique electronic structure, the rare earth iodate crystal is widely applied to the fields of optics, magnetism, catalysis, energy storage and the like. The invention relates to a samarium iodate rare earth crystal, a preparation method and application of the samarium iodate rare earth crystal in photocatalytic degradation of organic pollutants. The chemical formula of the samarium iodate rare earth crystal is SmI3O9 or Sm4I12O36, the samarium iodate rare earth crystal has a symmetric center and belongs to a monoclinic system, the space group is P21 / n (No.14), the cell parameters are alpha = 90 degrees, beta = 96.827 (2) degrees, gamma = 90 degrees and Z = 1, and the crystal is prepared through a hydrothermal method which comprises a hydrothermal mineralizer method and a hydrothermal self-crystallization method. The crystal is ground into powder, the powder is placed in water polluted by organic pollutants, a water sample is placed in an external illumination environment, energy is provided by external illumination, electron-hole pairs generated by Sm4I12O36 induce generation of hydroxyl free radicals and superoxide free radicals, the hydroxyl free radicals and the superoxide free radicals are combined with the organic pollutants, the original structure of the organic pollutants is destroyed, and the organic pollutants can be purified. The degradation of organic pollutants is realized.

The invention belongs to the technical field of medicine synthesis, and particularly relates to an iodination method of an amiodarone hydrochloride intermediate. The iodination method comprises the following steps: mixing 2-butyl-3-(4-hydroxybenzoyl) benzofuran, hypoiodate and an alcohol solvent, and carrying out a substitution reaction, so as to obtain the 2-butyl-3-(3, 5-diiodine-4-hydroxybenzoyl) benzofuran. According to the method, 2-butyl-3-(3, 5-diiodo-4-hydroxybenzoyl) benzofuran is generated through a substitution reaction by taking 2-butyl-3-(4-hydroxybenzoyl) benzofuran as a raw material and hypoiodate as an iodination reagent. According to the iodination method disclosed by the invention, all iodine in the hypoiodate can participate in the substitution reaction, the atom utilization rate of the iodine element is maximized, and the loss of the iodine element is reduced to the minimum, so that the recovery operation of the iodine is avoided. In addition, the iodination method provided by the invention is high in product yield, and the product yield can reach 90% or above.