126 results about "Nitrate ion" patented technology

The invention discloses a compatible molybdenum-aluminum mixed acid etching solution which comprises the following components in percentage by mass: 4%-7% of nitric acid, 55%-65% of phosphoric acid, 17%-28% of acetic acid, 0.5%-3% of an oxidizing additive, 0.05%-5% of a metal corrosion inhibitor and 10%-20% of deionized water, and the oxidizing additive is ceric nitrate and at least one selected from sodium nitrate, potassium nitrate and ammonium nitrate; the etching liquid does not contain other organic components except for organic carboxylic acid and organic carboxylate. According to the compatible molybdenum-aluminum mixed acid etching solution, on the basis that ceric nitrate is introduced, the content of nitric acid is reduced, the nitrate ion concentration is increased by adding nitrate, the overall oxidation performance of an etching solution system is improved, the etching rate ratio of different metals is adjusted, CD-Bias is reduced, the etching dip angles of a molybdenum single layer and a molybdenum-aluminum laminated layer are controlled to be kept at 20-50 degrees, and the problem of aluminum thorns is solved. The invention further discloses a molybdenum-aluminum etching method based on the compatible molybdenum-aluminum mixed acid etching solution.

Semisolid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

The invention relates to a preparation method and application of a two-dimensional ultrathin porous nitrogen-doped carbon composite material. According to the invention, a metal salt nitrate ion mediation method is adopted, and the ultrathin porous carbon nanosheet loaded with metal single atoms and metal nanoparticles is successfully prepared through decomposition of a prepolymerized dopamine-metal salt precursor. By changing the type of metal salt ligand anions, accurate regulation and control between a non-porous structure and a porous structure can be realized. Endogenous multi-scale pore defects are introduced into the surface of the carbon nanosheet, so that the impedance matching of the prepared carbon nanosheet system is effectively improved, and meanwhile, high conductivity is kept. According to the prepared material, the dielectric constant is improved by introducing a porous structure, impedance matching is optimized, and the electromagnetic wave absorption capacity is improved.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is citrulline, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least 0.33125 mg.

The invention relates to the technical field of analytical chemistry, in particular to an ion chromatography method for separation and detection of acetate, nitrite and nitrate ions in a complex matrix culture medium. The method mainly solves the problems of insufficient separation degree, serious matrix interference, poor detection precision and reproducibility and the like when the conventional ion chromatography technology is used for detecting a complex matrix culture medium.

The invention provides a solid electrolyte, a preparation method and a lithium battery, the solid electrolyte comprises a nitrate ion liquid-based metal organic framework C, polyoxyethylene and LiTFSI, the nitrate ion liquid-based metal organic framework C accounts for 3wt% of the polyoxyethylene, and the molar ratio of the polyoxyethylene to the LiTFSI is 10: 1; wherein the nitrate ion liquid-based metal organic framework C has a nitrogen-containing heterocyclic ring, and nitrate ions and Zn ions are coordinated on the nitrogen-containing heterocyclic ring. In the solid electrolyte provided by the invention, nitrogen-containing heterocyclic cations in the nitrate ionic liquid-based metal organic framework have a binding effect on TFSI-anions in the lithium salt, and meanwhile, dissociation of the lithium salt is promoted, so that lithium fluoride is generated in situ. Moreover, nitrate ions obtain electrons on the surface of the lithium metal negative electrode, and the electrons and lithium ions form lithium nitride in situ on the SEI layer, so that deposition of dead lithium is reduced, and finally, the interface stability of the battery is remarkably improved.

A nitrogen-based gas discharge device 100 according to one aspect of the present invention includes: a green compact 111 containing a powder of a layered double hydroxide in which nitrite ions (NO2 -) are included between layers, and a powder of a reducing agent or a precursor thereof; and a gas discharge module 110 disposed so as to cover the green compact 111 and composed at least of a film 112 that is waterproof and has water vapor permeability and gas permeability. The solubility of the reducing agent in water at room temperature is 1 g / 30 mL or more and the pH of a 0.1 (w / v)% aqueous solution of the reducing agent at room temperature is 5.1 or less. The nitrogen-based gas discharge device 100 may also include a water-containing body 120 for supplying water vapor to the nitrogen-based gas discharge module 110.

A system for photocatalytic synthesis of urea includes an aqueous solution and a photocatalytic device immersed in the aqueous solution. The photocatalytic device includes a substrate having a surface, and a conductive structure supported by the substrate at the surface, the conductive structure including a nitride interface in contact with the aqueous solution. The aqueous solution includes nitrate ions and dissolved carbon dioxide for synthesis of urea at the nitride interface of the conductive structure.

The invention belongs to the technical field of plant genetic engineering, and particularly discloses a nitrate ion transport channel gene PbrSLAH3b and application of the nitrate ion transport channel gene PbrSLAH3b in promoting growth of pear pollen tubules. The method comprises the following steps: extracting total RNA (Ribonucleic Acid) of Dangshan pears from pollen of Dangshan pears; carrying out reverse transcription on the RNA to obtain cDNA (complementary deoxyribonucleic acid); and by taking the cDNA as a template, carrying out amplification to obtain the pear pollen tube nitrate transport channel gene PbrSLAH3b, the PbrSLAH3b gene provided by the invention belongs to a slow anion channel SLAC / SLAH family member, the PbrSLAH3b is remarkably up-regulated in expression in the early growth stage of a pollen tube, and the PbrSLAH3b is positioned in a plasma membrane. The invention verifies that PbrSLAH3b can form a functional anion channel with NO3 <-> selectivity under the condition of not depending on proton gradient or phosphorylation state, and the PbrSLAH3b has relatively strong selectivity on NO3 <->. Therefore, the PbrSLAH3b gene can mediate the absorption and transport of the pollen tube to NO3 <-> and maintain the polarity growth directivity of the pollen tube, and has important application value for revealing the ion regulation mechanism of the growth of the fruit tree pollen tube and improving the reproductive development of the fruit tree.

The invention provides an NOx treatment system and method based on plasma activated water, and relates to the technical field of industrial waste gas treatment. The method comprises the following steps: acquiring waste gas containing nitrogen oxide NOx; according to the method, plasma activated water containing an oxidizing agent is used for spraying exhaust gas containing NOx to absorb NOx, the oxidizing agent and NOx are subjected to an oxidation-reduction reaction in the plasma activated water, and reaction products comprise nitrate ions dissolved in water. The plasma activated water containing the oxidizing agent is used for spraying the waste gas containing NOx, and NOx is effectively removed. Meanwhile, the activation reaction module can be integrated in the industrial waste gas treatment module, so that zero increase of the occupied land cost of NOx removal is realized. The plasma activated water device can be integrated into the semiconductor plasma waste gas treatment system, and the denitration targets of zero reagent addition, zero wastewater discharge and zero land occupation cost increase are achieved while semiconductor waste gas is efficiently treated.

The invention discloses an electrolyte additive of a lithium metal battery, an electrolyte thereof and a lithium ion battery. The electrolyte additive provided by the invention comprises a cationic organic large group and an anionic nitrate ion organic nitrate additive. NO32 in the structure can be preferentially reduced on the lithium metal negative electrode side to generate high-quality SEI rich in inorganic compounds. Then, the organic cation large groups inhibit the growth of lithium dendrites while maintaining the lithium nucleation rate through the characteristic adsorption effect, and finally uniform spherical deposition morphology is obtained.

The application discloses a scandium-based MOF crystal material, a preparation method and application thereof. The MOF crystal is formed by [Sc3(mu2-OH)3(CO2)4O6] n The three-dimensional porous framework structure is formed by the mutual connection of an inorganic metal chain, 2,5-thiophene dicarboxylic acid and a nitrate ion, is directly synthesized by a solvothermal reaction with a metal Sc based on the ligand 2,5-thiophene dicarboxylic acid, and has relatively mild, simple and easy reaction conditions. The MOF crystal has high crystallinity, excellent thermal stability, water stability, solvent stability and wide pH stability. Under normal temperature and pressure, C3H6 is preferentially adsorbed, then C2H6, and finally C2H4, and the MOF crystal has good C3H6 / C2H4 and C2H6 / C2H4 separation performance, thereby obtaining high-purity C2H4 and recovering C3H6, and can be applied to the effective separation of C2H4 and C3H6 in a methanol-to-olefin (MTO) mixture.

The invention discloses a method for separating rhenium from a rhenium-rich solution containing molybdenum and tungsten. The method comprises the following steps: extracting a rhenium-rich raw material solution containing ReO4 <-> and impurity ions by using an extraction agent containing hydrophobic ionic liquid to obtain an organic extraction phase containing ReO4 <-> and a raffinate phase containing the impurity ions; wherein the solvent of the raw material solution is water, and the impurity ions comprise one or two of MoO4 < 2-> and WO4 < 2->; the hydrophobic ionic liquid is composed of positive ions and negative ions, the anions are selected from one or more of halide ions, borate anions, carboxylate anions, carbonate anions, nitrate ions, nitrite ions, sulfate anions, sulfite anions, sulfonate anions, phosphate anions, phosphite anions, thiocyanate anions and amino acid ions. The method is high in separation efficiency, simple in technological process, easy to amplify, small in extraction agent loss, capable of being recycled and suitable for industrial production.

A secondary battery, a preparation method therefor, and an electrical device. The secondary battery comprises an electrode sheet. The electrode sheet comprises a current collector, an active material layer, and a base coating. The active material layer is located on at least one surface of the current collector. The base coating is located between the current collector and the active material layer. The base coating contains an additive, and anions of the additive comprise at least one of nitrate ions and nitrite ions. In the electrode sheet, the base coating is arranged between the current collector and the active material layer. The anions in the base coating comprise nitrate ions and nitrite ions, enabling the additive to gradually dissolve and diffuse into an electrolyte. In this way, the nitrate and nitrite undergo a reduction reaction, and the reduction product thereof becomes part of an SEI film to enable repair of the SEI film, thereby achieving thin, stable, and compact SEI films and significantly improving the cycle life of the battery.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is glutamine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3<sup2>−< / sup2>) that is at least about 0.05625 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is glutamine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3<sup2>−< / sup2>) that is at least about 0.05625 mg.

This material provides a useful component for increasing the content of Neisseria mucosa in the oral cavity. [Solution] An oral Neisseria mucosa increasing agent comprising a nitrate ion supply compound and one or more sugar alcohols selected from erythritol, xylitol, and mannitol as active ingredients.

The invention belongs to the technical field of forest tree genetic engineering breeding, and particularly relates to a CbuLBD19 gene for regulating and controlling root system development and nitrogen absorption and utilization of catalpa bungei and application of the CbuLBD19 gene. The nucleotide sequence of the CbuLBD19 gene is as shown in SEQ ID No.7, and the amino acid sequence coded by the CbuLBD19 gene is as shown in SEQ ID No.8. It is found that overexpression of the CbuLBD19 gene can cause reduction of the total root length and the root biomass of catalpa bungei. Meanwhile, the net absorption rate of nitrate ions in the root system, the activity of nitrate reductase (NR) and the content of amino acid are reduced, and the comprehensive expression is that nitrogen metabolism is reduced. The negative regulation and control function of the CbuLBD19 gene on the nitrogen absorption and utilization of the catalpa bungei is defined, and a technical route for improving the nitrogen absorption and utilization of the catalpa bungei by reducing the expression of the CbuLBD19 gene is provided.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is tryptophan, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least about 0.05625 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is tryptophan, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3—) that is at least about 0.05625 mg.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is beta alanine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3−) that is at least about 1 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is beta alanine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3−) that is at least about 1 mg.

Semisolid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

The present invention relates to a method for phosphating metal surfaces, preferably alloy-galvanized steel strip surfaces, by treating them by dipping or spray-dipping with acidic, aqueous solutions which may contain magnesium ions, phosphate ions and nitrate ions and, for further improvement of the layer formation, possibly further ions selected from ammonium ions, alkali metal ions and / or fluoride ions, wherein the workpieces are simultaneously treated cathodically with a direct current.

The invention relates to a molecular resist composition and a pattern forming method. The present invention addresses the problem of providing: a molecular resist composition having excellent sensitivity, resolution, and LWR in optical lithography using high-energy rays; and a pattern forming method using the molecular resist composition. The present invention is a molecular resist composition characterized by containing a sulfonium salt represented by the following formula (1) or (2), a salt containing a cation represented by the following formula (1-1) and a halide ion, a nitrate ion, a hydrogen sulfate ion, a bicarbonate ion, a tetraphenylborate ion or an anion represented by any one of the following formulae (1-2)-(1-8), and an organic solvent, and no base polymer is contained.

The application relates to the field of water quality detection, in particular to a paper-based nitrate ion detection chip and a preparation method and application thereof. The paper-based nitrate ion detection chip comprises a bottom plate and a paper-based layer on the bottom plate; the paper-based layer comprises a color developing area, a reduction area and a sample inlet area which are sequentially communicated; a detection reagent is pre-fixed in the color developing area, the detection reagent comprises glucose, p-aminobenzenesulfonic acid, N-1-naphthyl ethylenediamine and ascorbic acid; a reduction reagent is pre-fixed in the reduction area, the reduction reagent comprises zinc powder and cadmium chloride; the detection reagent solution is added to the color developing area and then freeze-dried, so that the detection reagent is pre-fixed in the color developing area. The freeze-drying technology is used to uniformly pre-fix the detection reagent on the filter paper, a loose structure is formed, the color developing uniformity of the detection reagent after reacting with nitrate ions can be effectively improved, and the reaction time is reduced.

To provide a wire electric discharge machine that can extend a service life of a filter 32, even when subjecting an aluminum-based material to electric discharge machining.SOLUTION: A wire electric discharge machine (10) according to an embodiment in the disclosure subjects an aluminum-based material to electric discharge machining. A processing liquid used for electric discharge machining in the wire electric discharge machine includes one or more cations selected from potassium ions, calcium ions, sodium ions, and magnesium ions, and one or more anions selected from sulfate ions, sulfite ions, disulfite ions, hydrogen sulfite ions, hydroxide ions, nitrate ions, and nitrite ions.SELECTED DRAWING: Figure 1

A sodium nitrate nanoparticle composition for improving the germination of finger millet seeds (Eleusine coracana), comprising sodium nitrate nanoparticles dispersed in an aqueous medium, a) wherein the sodium nitrate nanoparticles are synthesized by reacting sodium nitrate and sodium hydroxide, each at a concentration of 1 millimolar or 2 millimolar in aqueous medium, b) wherein polyethylene glycol is present at a concentration of 1 percent as a stabilizing agent to prevent aggregation and maintain the stability of the nanoparticles, c) wherein the reaction mixture is continuously stirred and then stabilized at room temperature for 15 days to form stable sodium nitrate nanoparticles, d) wherein the composition is configured to enable a sustained and controlled release of nitrate ions with improved bioavailability during seed germination, while preventing rapid dissolution and leaching into the environment, and e) wherein the finger millet (Eleusine coracana) seeds with the composition lead to improved germination performance, including an optimization of the sprout-to-root ratio to about 1.04 at a concentration of 1 millimolar, an increase in carbohydrate content to up to about 0.24 milligrams per 0.5 grams per milliliter, an increase in protein content to up to about 95 milligrams per milliliter, an increase in total chlorophyll content to up to about 22.0666 milligrams per gram and the maintenance of an antioxidant capture capacity of at least 95.9 percent compared to untreated seeds.

The embodiment of the invention provides a Raman spectrum-based nitric acid concentration quantitative detection method and an online detection system. The method comprises the following steps: acquiring a Raman spectrum of a target nitric acid solution as a target Raman spectrum; searching a first characteristic peak formed by vibration of nitric acid molecules N-OH and a second characteristic peak formed by symmetrical stretching vibration of nitrate ions in the target Raman spectrum; calculating the ratio of the peak area of the first characteristic peak to the peak area of the second characteristic peak, and taking the ratio as a target ratio; and determining the nitric acid concentration of the target nitric acid solution according to the target ratio. The concentration of the nitric acid solution can be accurately measured based on the Raman spectrum.

Provided are an ozone water generation device and an ozone water generation method which make it possible to increase the amount of ozone generated in water and maintain the concentration of generated ozone. An ozone water generation device according to the present invention is characterized by comprising: a nitric acid ion removal device that removes, from supplied water, at least nitric acid ions among the ions contained in the water, thereby generating conditioned water in which the nitric acid ions are adjusted to a prescribed concentration or lower; a nanobubble water generation device that is disposed in the conditioned water, that receives supply of air or oxygen, and that produces, in the conditioned water, nanobubbles of the air or oxygen, thereby generating nanobubble water in which the nanobubbles are mixed in the conditioned water; and an ultraviolet light irradiation device that irradiates the nanobubbles contained in the nanobubble water or the air or oxygen supplied to the nanobubble water generation device with ultraviolet light and changes the same to ozone in the conditioned water, thereby generating nanobubble ozone water which contains ozone nanobubbles.

Solid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

This invention provides a NO based on plasma-activated water. x This invention relates to the field of industrial waste gas treatment technology, specifically to a treatment system and method for removing nitrogen oxides (NOx). x The exhaust gas; using plasma-activated water containing oxidants, spraying NO... x The exhaust gas, to absorb NO x In plasma-activated water, oxidant and NO x A redox reaction occurs, and the reaction products include water-soluble nitrate ions. This invention utilizes plasma-activated water containing an oxidant, sprayed with NO... x The exhaust gas effectively removes NO. x Meanwhile, the activation reaction module of this invention can be integrated into the industrial waste gas treatment module, realizing NO... x The removal of [the pollutant] results in zero increase in land use costs. This invention integrates a plasma-activated water device into a semiconductor plasma exhaust gas treatment system, achieving the denitrification goals of zero reagent addition, zero wastewater discharge, and zero increase in land use costs while efficiently treating semiconductor exhaust gas.

A wire electric discharge machining device according to an aspect of the present disclosure is for electric discharge machining of an aluminum-based material, wherein a machining fluid used in electric discharge machining contains at least one kind of cation from among potassium ions, calcium ions, sodium ions and magnesium ions and at least one kind of anion from among sulfate ions, sulfite ions, disulfite ions, hydrogen sulfite ions, hydroxide ions, nitrate ions and nitrite ions.