9 results about "Iodic acid" patented technology

The invention provides a rare-earth-based composite pesticide and a preparation method and application thereof, active ingredients of the rare-earth-based composite pesticide comprise a soil material LN and carbendazim according to the mass ratio of (2-3): 1, and the soil material LN is prepared after a lanthanide rare earth material and iodic acid react and crystallize. The rare-earth-based composite pesticide disclosed by the invention has an obvious inhibition effect on pathogenic bacteria of cotton verticillium wilt, can obviously improve symptoms of the cotton verticillium wilt in field experiments and practical application processes, and reduces agricultural loss caused by the cotton verticillium wilt.

The application provides an Ag etching solution, a preparation method and application thereof. The Ag etching solution comprises the following components in a weight ratio: 40-80 parts of inorganic acid; 10-50 parts of organic acid; 0.05-1.5 parts of corrosion inhibitor; 0.1-2 parts of chelating agent; 1-7.5 parts of buffer; and 30-50 parts of ultrapure water. The application further discloses a preparation method of the Ag etching solution and application thereof in the field of etching ITO-Ag-ITO composite layers. The inorganic acid is selected from one or more of phosphoric acid, sulfuric acid, carbonic acid, boric acid, hydrobromic acid, iodic acid, hypoiodous acid, hydrofluoric acid and nitric acid. The inorganic acid is preferably phosphoric acid and nitric acid. The Ag etching solution has a stable etching rate for ITO-Ag-ITO, and is not damaged to the insulating layer and photoresist, and can be used in the OLED pixel electrode manufacturing process, and the Ag layer is not provided with burrs and is not shrunk after etching.

The present invention is a composition comprising a) an aqueous dispersion of polymer particles optionally functionalized with a phosphorus acid monomer and having a z-average particle size as measured using dynamic light scattering in the range of from 50 nm to 500 nm; b) a salt of iodic acid; c) a C8-C10-alkyl phosphate or sulfate; with the proviso that when the polymer particles are not functionalized with the phosphorus acid monomer, the composition further comprises d) a hydrotrope. The composition of the present invention provides a way of preserving a latex against microbial growth in the absence of a biocide.

A method for etching a metal barrier layer and a metal layer, and a method for manufacturing a semiconductor device, are disclosed. The method includes: forming a metal barrier layer and a metal layer on a substrate; and etching the metal barrier layer and the metal layer using an etching composition. The etching composition may include: an oxidant selected from nitric acid, bromic acid, iodic acid, perchloric acid, perbromic acid, periodic acid, sulfuric acid, methanesulfonic acid, p-toluenesulfonic acid, benzenesulfonic acid, or combinations thereof; a metal etching inhibitor, including a compound represented by chemical formula 1 as shown in the specification; and a metal oxide solubilizer selected from phosphoric acid, phosphates, carboxylic acids having 3 to 20 carbon atoms, or combinations thereof.

The application relates to the technical field of nanomaterials, in particular to high-purity fluorescent carbon dots synthesized from the bottom to the top by self-polymerization driving and a method and application thereof. The high-purity fluorescent carbon dots synthesized from the bottom to the top by self-polymerization driving are prepared by taking dopamine (DA) and phenolic analogs thereof as self-polymerization driving precursors, containing a polar organic solvent as a solvent system and being prepared under the regulation of iodic acid and its salt / high iodic acid and its salt. The method adopts DA and other phenolic compounds with self-polymerization properties as precursors, and effectively promotes the self-polymerization of DA and other phenolic compounds into polydopamine (PDA) or other polyphenols by regulating the iodic acid or high iodic acid induced oxidation process in a specific solvent mixture system, and then efficiently converts the PDA or other polyphenol into PDA derivative fluorescent carbon dots (PDA-CDs) or polyphenol derivative fluorescent carbon dots through a controllable solvothermal reaction.

The invention belongs to the technical field of preparation of inorganic functional materials, and discloses a preparation method and application of electronic-grade high-purity lithium iodate, and the method comprises the following steps: (1) preparing purified refined lithium carbonate by a recrystallization method; (2) preparing an iodic acid solution; (3) synthesizing a lithium iodate solution; and (4) crystallizing and purifying to prepare a lithium iodate finished product. According to the method, the iodine pentoxide and the refined lithium carbonate directly react, the process conditions are mild, the mother liquor can be recycled, and the production cost is remarkably reduced. By accurately controlling recrystallization parameters, a reactant molar ratio and a concentration crystallization end point, the problems of impurity entrainment and poor crystal morphology of a product in a traditional method are solved, and the method is suitable for industrial production and the like of electronic-grade lithium iodate.

The application relates to the technical field of optical crystal materials, and discloses a kind of ultraviolet to infrared broadband high birefringence [C (NH2) 3] ICl2 Single crystal material, comprising: the present application adopts non-stoichiometric ratio guanidine hydrochloride and iodic acid as reaction precursor, in the specific proportion mixed solvent of deionized water and concentrated hydrochloric acid, reach thermodynamic equilibrium state in closed high-pressure system;Subsequently, a stepwise temperature control program containing moderate cooling across metastable zone and extremely slow cooling orientation growth zone is executed, and finally the single crystal material is obtained by washing and drying with cold non-aqueous solvent. The present application utilizes the electrostatic repulsion field generated by the delocalized positive charge in the reaction system to guide the linear anion to overcome the steric hindrance and realize the parallel ordered assembly along a single crystal axis. The birefringence and dichroism of the obtained single crystal material are decoupled, so that the structure is complete, and the high birefringence rate with wide spectrum is obtained.

The invention relates to a method for separating and purifying at least one dialdehyde-oxidised water-soluble polysaccharide from an aqueous solution comprising the polysaccharide and at least iodic acid or a salt thereof, the method being carried out in an electrodialysis device comprising a stack of cells, each cell consisting of two adjacent concentration (C) and dilution (D) compartments bounded alternately by cation-exchange membranes and anion-exchange membranes, wherein the aqueous solution is sent to the dilution compartments (D) in order to obtain an aqueous solution comprising at least one purified dialdehyde-oxidised water-soluble polysaccharide, and an aqueous effluent comprising at least iodic acid or a salt thereof is recovered from the concentration compartments (C).

This application relates to the field of optoelectronic crystal materials and discloses a hydrothermal synthesis method for large-size [C(NH2)3]ICl2 single crystals, comprising the following steps: placing 70-85 parts by weight of guanidine hydrochloride and 110-135 parts by weight of iodic acid in a container, adding 180-220 parts by weight of deionized water and 45-65 parts by weight of hydrochloric acid to obtain a precursor solution; transferring the precursor solution to a high-pressure reactor, heating it to 100-110°C and maintaining the temperature for 2-4 days within two hours; cooling it to room temperature at a cooling rate of 0.5-1.5°C / h, and collecting the reaction product. This invention obtains bulk single crystals with millimeter-scale dimensions by controlling the cooling crystallization process. The obtained single crystals possess a birefringence of 0.953 in the ultraviolet to infrared spectral range, while exhibiting near-zero linear dichroism. The preparation method has good repeatability, and the single crystals can meet the processing requirements of components such as polarization-selective prisms and optical modulators.