21 results about "Phosphomolybdic acid" patented technology

A method for synergistically improving the photoelectric efficiency and stability of PSCs based on phosphomolybdic acid@gamma-cyclodextrin host-guest composite material belongs to the technical field of perovskite solar cells. The present application solves the problems of poor photoelectric efficiency and stability of existing PSCs, and solves the problems of poor compatibility of existing POMs with perovskite system and easy aggregation of POMs in the process of perovskite defect passivation, which leads to low utilization rate of passivation sites. Preparation: I, PMo 12 @gamma-CD host-guest composite material; II, preparation of PMo 12 @gamma-CD modified perovskite precursor solution; III, preparation of PSCs. The present application is used for synergistically improving the photoelectric efficiency and stability of PSCs based on phosphomolybdic acid@gamma-cyclodextrin host-guest composite material.

This invention relates to the field of electroplating solution analysis technology, and in particular to a rapid analytical method for polyethylene glycol (PEG) additives in copper electrodeposition solutions. The method involves protonated PEG forming a macromolecular complex colloid with phosphomolybdate under acidic conditions of pH 1.0–2.0. This colloid exhibits maximum absorption at 372 nm, and the absorbance value is directly proportional to the PEG concentration in the formed complex colloid. This allows for quantitative analysis of PEG in the copper electrodeposition solution. Because the phosphomolybdate-PEG complex colloid selected in this invention has excellent selectivity, and no sample pretreatment is required, this invention offers advantages such as ease of operation, speed, high sensitivity, and good selectivity. It is particularly suitable for intermediate control analysis in production environments, such as for electroplated copper interconnects in chips and printed circuit boards, as well as electrolytic copper foil for negative electrode current collectors and copper-clad laminates in energy storage batteries.

The present application belongs to the technical field of electrolytic copper foil manufacturing, and particularly relates to a HVLP copper foil with low surface roughness and a preparation method thereof. The preparation method comprises the following steps: electrolytic foil growth, vacuum annealing treatment, electrochemical grain boundary pinning treatment, surface treatment and drying and slitting. The vacuum annealing treatment is performed after the electrolytic foil growth and before the surface treatment, so as to eliminate the residual stress in the copper foil; the electrochemical grain boundary pinning treatment adopts a silicon tungstate or phosphomolybdate electrolyte, and introduces tungsten or molybdenum elements at the grain boundary of the copper foil to form a pinning layer; in the surface treatment, the roughening treatment adopts pulse current and adds grain nano-refining additives, the solidification treatment is performed in a solidification liquid containing a rare earth salt, and the silane coupling agent treatment adopts a complex treatment liquid of KH-560 and a long-chain alkyl silane coupling agent. The obtained HVLP copper foil has a roughness Rz of the rough surface of less than or equal to 0.8 microns, high initial peel strength, a peel strength retention rate of more than 80% after hygrothermal aging, and good long-term service stability.

The application discloses a preparation method of a rice hull silica supported phosphomolybdic acid catalyst, which comprises the following steps: (1) dispersing phosphomolybdic acid in an organic solvent; (2) immersing a rice hull silica carrier in the dispersion liquid obtained in the step (1); (3) removing the dispersion liquid which is not absorbed by the rice hull silica to obtain a muddy mixture; (4) heating and drying the product obtained in the step (3) to gradually volatilize the organic solvent, and uniformly dispersing the phosphomolybdic acid on the surface of the rice hull silica substrate; and (5) further heat treating the product obtained in the step (4) to obtain the rice hull silica supported phosphomolybdic acid catalyst. The application does not need to additionally modify the rice hull silica carrier, and the distribution of molybdenum in the obtained catalyst is more uniform.

This invention discloses a polyacid-modified hydroxy boron nitride nanosheet, its preparation method, and its application. The preparation is carried out according to the following steps: (1) preparation of hydroxy boron nitride nanosheets, (2) synthesis of organic heteropolyacid salt compounds, (3) preparation of sodium tetrabutylphosphomolybdate, and (4) preparation of polyacid-modified hydroxy boron nitride nanosheet composite materials. This invention provides a simple, mild, and highly pure and dispersible method for preparing polyacid-modified hydroxy boron nitride nanosheets. It solves the technical problems of poor solution dispersibility, low product purity, and inability to prepare on a large scale in practical applications of h-BN.

This invention relates to the field of phosphomolybdate catalyst technology, specifically disclosing a phenylphosphine-functionalized phosphomolybdate, a photoelectric sensor, its preparation method, and its application. The molecular formula of the phenylphosphine-functionalized phosphomolybdate is: [Na2(bib)2(H2O)3]{Fe[Mo6(PO3C6H5)4O 15 H5]2}·2H3O, where bib is 4,4'-bis(1H-imidazol-1-substituted)-1,1'-biphenyl. The phenylphosphine-functionalized phosphomolybdate provided by this invention possesses excellent photocatalytic and electrocatalytic activity. Photoelectric sensors prepared from it exhibit outstanding electrochemical sensing performance, including high sensitivity, wide linear range, low detection limit, and rapid response. Furthermore, they demonstrate good cycling stability and anti-interference ability, showing broad application prospects in the dual-function detection of trace and ultra-trace amounts of Cr(VI) and LVF.

This invention discloses a highly efficient catalytic synthesis method for isooctanoic acid, belonging to the field of isooctanoic acid preparation technology. The highly efficient catalytic synthesis of isooctanoic acid includes the following steps: N1: Mixing n-butyraldehyde and a bifunctional solid catalyst, introducing hydrogen gas, and heating to 110-130℃ for 5-7 hours, followed by post-treatment to obtain isooctaldehyde; adding a phosphomolybdate catalyst to isooctaldehyde, introducing air, stirring, and heating to 50-60℃ for 3-5 hours, followed by post-treatment to obtain isooctanoic acid; the bifunctional solid catalyst is Ni / MgO-TiO2; the phosphomolybdate catalyst is Cs. 1.5 H 1.5 PMo 12 O 40 @SiO2. The preparation process of isooctanoic acid in this invention exhibits good n-butyraldehyde conversion and yield, and the catalyst is easily recovered and reused, which is beneficial for industrial conversion applications.

The application relates to the technical field of organic synthetic chemistry, and particularly discloses a 2-acyl benzothiazole derivative and a preparation method thereof. The method takes benzothiazole compounds and aromatic aldehyde compounds as substrates, takes polyacid such as phosphomolybdic acid as a catalyst, and generates the 2-acyl benzothiazole derivative through cross-dehydrogenative coupling in an organic solvent under the conditions of air or oxygen atmosphere and light irradiation. The application does not need a transition metal catalyst and an alkaline additive, uses oxygen as a terminal oxidant, the catalyst can be recycled and reused, the reaction condition is mild, the operation is simple, the applicable range of the substrate is wide, the chemical selectivity is high, and the product yield can reach 85%. The method overcomes the limitations of safety, selectivity and scale of the prior art, and provides an efficient, economical and environment-friendly new path for the preparation of high-value 2-acyl benzothiazole derivatives in the fields of medicine, pesticide and material science.

An aqueous reinforced anti-rust coating, application method and preparation process. The application discloses an aqueous reinforced anti-rust coating, which comprises the following components in parts by weight: 40-60 parts of acrylic emulsion, 10-20 parts of acrylic phosphate emulsion, 15-25 parts of nano-compound zinc phosphomolybdate, 3-8 parts of nano-graphene, 0.3-0.8 parts of silicone defoaming agent, 0.1-0.3 parts of bentonite, 0.1-0.5 parts of viscosity regulator, 0.1-0.2 parts of pH regulator, 1-3 parts of high-molecular polymer dispersant, 5-10 parts of film-forming aid, 10-20 parts of deionized water, 3-5 parts of n-docosane-coated benzotriazole phase change microcapsule, 3-5 parts of n-tetracosane-coated benzotriazole phase change microcapsule and 3-5 parts of n-octacosane-coated benzotriazole phase change microcapsule. The long-term corrosion resistance and intelligent response capability of the coating are improved.

This invention discloses a high-performance biomass flame-retardant composite filler and its preparation method in the field of flame-retardant composite materials technology. The method includes: dissolving sodium lignosulfonate and phytic acid in deionized water, adjusting the pH to an acidic range to obtain a biomass dispersion; dispersing a silane coupling agent in an ethanol-water solution, hydrolyzing it with glacial acetic acid to an acidic level, then adjusting it to near neutral; adding cerium-doped zinc borate-modified boron nitride nanosheets and phosphomolybdic acid-intercalated modified magnesium aluminum lanthanum ternary hydrotalcite; and ultrasonically treating the mixture to obtain a slurry; adding the biomass dispersion dropwise to the slurry, adjusting the temperature to a medium temperature range, adjusting the pH to a weakly acidic level, stirring the reaction, and then spray drying. The method of this invention is self-consistent, and the resulting filler exhibits excellent flame-retardant properties.

This invention relates to the field of passivation solution technology, and particularly to a low-temperature, fast-curing, self-healing chromium-free passivation solution, its preparation method, and its application. The passivation solution comprises 48%-58% modified waterborne acrylic resin emulsion, 1.8%-2.5% silane coupling agent, 7%-11% double-modified nano-SiO2, 1.2%-1.5% ammonium zirconium carbonate, 0.3%-0.5% phosphomolybdic acid, 0.2%-0.4% imidazole accelerator, 0.2%-0.4% wetting and dispersing agent, 0.1%-0.3% defoamer, and deionized water to bring the total to 100%. The modified waterborne acrylic resin emulsion contains diacetyl groups, phosphonic acid groups, and hydrazide groups. By rationally selecting and compounding the passivation components, the passivation solution achieves rapid curing into a film at low temperatures, exhibiting dynamic self-healing function, excellent corrosion resistance, and adhesion. Furthermore, the preparation process is simple, and the production cost is controllable.

The application belongs to the technical field of new materials, and discloses a catalyst applied to electrocatalytic reduction of nitrate to prepare ammonia and a preparation method thereof. The preparation method of the catalyst comprises the following steps: firstly, dissolving copper metal salt, organic acid, phosphomolybdic acid and organic ligand in an organic solvent to prepare a mixed solution; then, performing microwave synthesis on the mixed solution, and preparing a solid powder through separation and drying; finally, performing calcination on the solid powder in an air atmosphere to prepare the catalyst. The application adopts a microwave synthesis coupling air calcination process to prepare a PMo 12 / CuO composite catalyst, realizes in-situ synergistic loading of phosphomolybdic acid (PMo 12 ) and CuO active sites, and the prepared catalyst has Cu-O-Mo and phosphate synergistic active sites, which not only enhances the specific adsorption and activation capacity of the catalyst to nitrate, but also effectively inhibits the hydrogen evolution side reaction, and further improves the selectivity and yield of ammonia.

This invention discloses a water-based fast-drying anti-rust paint and its preparation process and method. The paint comprises a core-shell acrylic emulsion, an acrylic phosphate emulsion, a nano-composite zinc phosphomolybdate, nano-graphene, a phytic acid-modified silicon quantum dot composite, sodium metavanadate, and additives. It has excellent long-lasting anti-corrosion, fast-drying application, and environmental friendliness, and is particularly suitable for rust prevention and protection of steel substrates in high-chlorine corrosion environments such as marine environments.

The application relates to the technical field of denitration catalysts, and particularly discloses a Sm-Zr bifunctional catalyst as well as a preparation method and application thereof, which comprises the following steps: (1) dissolving samarium salt and zirconium salt in water, adding a precipitant drop by drop to generate a precipitate, drying the precipitate after microwave irradiation treatment to obtain a Sm-Zr solid solution; (2) dissolving manganese salt and M salt in water, adding a complexing agent and stirring and heating to form a sol state, immersing the obtained dispersion system into the Sm-Zr solid solution, drying, and then performing staged temperature rising calcination to obtain a calcination product; (3) immersing the calcination product into a phosphomolybdic acid aqueous solution, performing ultrasonic treatment, and then performing freeze drying; and (4) subsequently introducing ammonia gas to perform low-temperature activation treatment, thereby obtaining the Sm-Zr bifunctional catalyst. The process condition is warm, the prepared catalyst can realize NO conversion rate > 90% in a temperature window of 100-400 DEG C, N2O decomposition rate > 85% when the temperature is > 300 DEG C, and the catalyst has excellent SO2 / H2O poisoning resistance.

A method for preparing a 2D evaporation membrane constructed from a self-assembled two-dimensional superlattice of molybdate-heteropolyblue subnanowires and its application are disclosed. The method involves dissolving phosphomolybdic acid and transition metal chlorides in a mixed solvent system of oleic acid, oleylamine, and ethanol, stirring at room temperature; then pouring the solution into a stainless steel high-pressure reactor lined with PTFE, reacting, cooling to room temperature, and collecting the solid product by centrifugation; washing, and vacuum drying overnight to obtain molybdate-heteropolyblue powder; dispersing the molybdate-heteropolyblue powder in a cyclohexane-ethanol mixed solution, heating the resulting dispersion, filtering it through a hydrophilic filter membrane to form a membrane, and air-drying it overnight to obtain the 2D evaporation membrane constructed from the molybdate-heteropolyblue two-dimensional superlattice. The advantages are: the nanowire structure of this evaporation membrane provides long-range ordered nanoscale water transport channels, and its internal hydrophilic and external hydrophobic properties enhance water management capabilities, thereby promoting efficient water transport and evaporation, enabling efficient and stable solar thermal seawater evaporation.

The application discloses a reagent for detecting monohydroxyphenol metabolites in urine and a preparation method thereof, and belongs to the technical field of urine detection reagents. The preparation method comprises the following steps: (1) preparing a mercurous nitrate solution, a mercury sulfate solution and a phosphomolybdic acid solution respectively; (2) mixing the three solutions and then laser soaking to prepare a composite system with stronger oxidation performance; (3) cross-linking after co-dissolving vanadate and nickel ions to form a complex three-dimensional hole cross-linking structure; and (4) ultrasonically mixing the first solution and a material containing nickel to obtain a simple, efficient and accurate urine monohydroxyphenol metabolite detection reagent. The reagent for detecting monohydroxyphenol metabolites in urine has the advantages of high sensitivity, simple operation, stable and reliable results and the like, and is suitable for clinical detection, scientific research and the like.

This invention provides a reduced single-atom nanomedicine, its preparation method, and its application, belonging to the field of nanobiomedicine technology. The single-atom nanomedicine prepared by this invention is a cerium single-atom-anchored phosphomolybdic acid nanocluster, namely Ce-POM. The preparation method includes using activated carbon as a substrate, adding a phosphomolybdic acid solution for loading, subsequently introducing cerium(III) acetylacetone hydrate for mixing and stirring, and finally calcining and reducing with hydrogen in a tubular furnace to obtain the Ce-POM single-atom nanomedicine. The Ce-POM nanomedicine of this invention possesses peroxidase-like and catalase-like activities. Through highly efficient multi-enzyme activity and charge migration, it promotes the consumption of reactive oxygen species (ROS), reduces cellular oxidative stress damage, inhibits ferroptosis, improves the microenvironment of neural tissue in cerebral hemorrhage, and promotes neural tissue repair. Simultaneously, the decrease in ROS levels further inhibits the activation of the intracellular immune signaling pathway cGAS-STING, regulates immune system function, protects neural cell repair, and achieves the ideal therapeutic effect for cerebral hemorrhage.

The application discloses a macromolecular weight epoxy resin metal anticorrosive paint, and an A component comprises the following components: 25-27 parts of macromolecular weight epoxy resin; 40-50 parts of ceramic powder; 15-25 parts of nano compound type zinc phosphomolybdate; 3-8 parts of nano graphene; 3-8 parts of lanthanum composite light response corrosion inhibition powder modified by benzotriazole and two-dimensional metal organic framework; 0.5-2 parts of epoxy phosphate; 1-3 parts of high molecular dispersing agent; 0.3-0.8 parts of polyether modified organic silicon defoaming agent; 1-3 parts of organic bentonite; 0.1-0.5 parts of film forming aid; 1-5 parts of rutile titanium white powder; and 12-15 parts of organic solvent. The corrosion inhibitor is released on demand.

The application discloses a catalyst for benzene and cyclohexene alkylation to prepare cyclohexylbenzene and a preparation method and application thereof. The catalyst comprises an ultrathin layered MWW molecular sieve and a heteropoly acid, the layered thickness of the ultrathin layered MWW molecular sieve is 5-10 nm, and the heteropoly acid is one or more of phosphotungstic acid, silicotungstic acid and phosphomolybdic acid. The catalyst can improve the selectivity and service life, and the benzene and cyclohexene alkylation reaction can be carried out at a lower reaction temperature, so that the selectivity of a key by-product, methylcyclopentylbenzene, is reduced.

This invention belongs to the technical field of phosphomolybdic acid-rare earth metal ion / imidazolium-modified UiO-66 composite catalysts, and discloses a phosphomolybdic acid-rare earth metal ion / imidazolium-modified UiO-66 composite catalyst, its preparation method, and its application. The phosphomolybdic acid-rare earth metal ion / imidazolium-modified UiO-66 composite catalyst provided by this invention includes a modified support and an active component supported on the modified support. The modified support is an imidazolium-modified zirconium-based metal-organic framework material UiO-66, denoted as Im-UiO-66. The active component includes phosphomolybdic acid and rare earth metal ions, wherein the rare earth metal ions are Nd... 3+ 、Sm 3+ Or Eu 3+ One or more. The composite catalyst provided by this invention is used for the catalytic synthesis of antioxidant 1330, exhibiting high product selectivity, strong catalyst stability, efficient reusability, and mild catalytic reaction conditions.