244 results about "Nitrogen oxide" patented technology

The invention relates to the technical field of pendimethalin wastewater treatment, in particular to a pendimethalin wastewater treatment method which comprises the following steps: step 1, adding ferrous oxide or ferrous hydroxide into wastewater, and adjusting the pH value of the wastewater to be neutral; 2, adjusting the pH value of the primary filtrate to 2-5 by using an inorganic acid, and adding an iron-carbon mixture with the mass ratio of 1: (0.5-2) to carry out an oxidation-reduction reaction; and step 3, introducing the secondary filtrate into 2-5 reaction kettles which are connected in series, and adding hydrogen peroxide for 1-3 times according to the mass ratio of hydrogen peroxide to COD (Chemical Oxygen Demand) of (15-25): 1. According to the pendimethalin wastewater treatment method provided by the invention, the iron-carbon mixture generates a primary battery effect in the solution, nitrate radicals can be quickly reduced into nitrogen oxides or ammonia gas, the nitrate radicals are efficiently and quickly treated, and meanwhile, iron ions and ferrous ions can finally generate corresponding hydroxides to be separated out.

The invention discloses a compound # imgabs0 # as shown in a formula I, or a stereoisomer, a nitrogen oxide, an isotope and a pharmaceutically acceptable salt thereof, Q, W1, W2, R6, R7, R8, R9, R10, R11, R12 and R13 are defined in the specification, the compound shows an excellent insecticidal effect at a low dosage, and the compound has a good application prospect. Particularly, the insecticidal composition has an outstanding effect in the aspects of fast-acting property and prevention and treatment of pests which generate resistance to the existing insecticide, and has a wide application prospect.

The invention relates to the field of phosphorus-nitrogen flame retardants, and discloses a preparation method and application of a novel phosphorus-containing nitrogen oxide flame retardant, the preparation method comprises the following steps: S1, under the protection of nitrogen, dissolving diphenylphosphinyl hydroxylamine and triethylamine in a tetrahydrofuran solvent to prepare a reaction substrate solution; s2, slowly dropwise adding a diphenylphosphinyl chloride solution into the solution, and then sufficiently carrying out the reaction in a staged heating and heating reflux mode; s3, cooling and filtering to remove solid byproducts generated by reaction, and concentrating filtrate to obtain a crude product solid; and S4, recrystallizing and purifying the crude product by using ethyl acetate, and finally heating and drying the obtained crystal under a vacuum condition to obtain the product. An N-O group is innovatively introduced into the molecular structure of the flame retardant, so that the effect of efficiently capturing gas-phase free radicals in cooperation with a phosphorus-containing group is achieved, and the substantive technical progress that the material can be endowed with excellent flame retardant property with extremely low addition amount is realized.

The invention belongs to the field of fossil energy combustion and energy conservation and emission reduction, and relates to a fossil energy combustion pollutant resource utilization and zero emission system which comprises an air separation device, an oxygen-enriched combustion system, a dust removal device, a desulfurization device, a water treatment device and a CO2 recovery device. According to the scheme provided by the invention, inhalable particles and nitrogen oxides generated by fossil energy combustion can be greatly reduced, carbon dioxide and sulfides generated by fossil energy combustion are comprehensively recycled, and zero emission of combustion pollutants is realized.

A method for the preparation of carboxylic acid esters by iron-catalyzed oxidation esterification of alcohols. The present invention discloses a method for directly oxidizing and esterifying alcohols to prepare carboxylic acid ester compounds with oxygen or air as the oxidant under iron catalysis. The method is carried out at 25 °C - 60 °C in an organic solvent, using iron nitrate (Fe(NO3)3·9H2O), nitrogen oxides and Lewis acid as catalysts, and oxygen or air as the oxidant, and the alcohol is directly oxidized and esterified to form carboxylic acid ester compounds. The present invention has many advantages such as simple operation, cheap and easily available catalysts and raw materials, mild reaction conditions, excellent yield, good compatibility of substrate functional groups, scalable reaction scale, environmentally friendly reaction process and no pollution, and has the prospect of industrial application.

The invention discloses a denitration catalyst with a low sulfur dioxide oxidation rate, a preparation method of the denitration catalyst and application of the denitration catalyst in removal of nitrogen oxides through ammonia selective catalytic reduction. The denitration catalyst with the low sulfur dioxide oxidation rate is a titanium dioxide loaded vanadium pentoxide, molybdenum oxide and cerium oxide catalyst subjected to phosphorylation treatment. The preparation method comprises the following steps: (1) preparing a first solid-liquid mixture in which a vanadium pentoxide precursor, a molybdenum oxide precursor, a cerium oxide precursor and titanium dioxide are uniformly dispersed, drying the first solid-liquid mixture, grinding and roasting to obtain an intermediate product; and (2) preparing a second solid-liquid mixture in which the intermediate product and the precursor for phosphorylation are uniformly dispersed, drying the second solid-liquid mixture, grinding, and roasting to obtain the denitration catalyst with low sulfur dioxide oxidation rate. The low-cost control of NOx is realized, and the generation of sulfur trioxide is reduced at the same time.

The invention relates to the technical field of chemical plant smoke filtering, in particular to a chemical plant discharge filtering device with a monitoring function, which comprises a barrel, a gas inlet pipe, a gas outlet pipe and the like, the barrel is communicated with the gas inlet pipe, and the top of the barrel is communicated with the gas outlet pipe. Indexes of pollutants such as sulfur dioxide, nitric oxide, carbon monoxide and carbon dioxide in flue gas can be detected through the flue gas sensor, when the flue gas sensor detects that the pollutants in the flue gas exceed the standard, the controller can control an electric guide rail to work, the electric guide rail drives a first push plate to move forwards, and a first sealing plate can also move forwards; the first sealing plate seals the exhaust pipe, real-time response can be achieved after the filter element is aged and breaks down, the filter element is replaced without shutdown under the condition that it is ensured that smoke does not leak, smoke which is not completely purified is prevented from being exhausted out, and therefore pollution to the environment can be avoided.

The present invention provides a compound or an enantiomer, diastereomer, racemate, tautomer, stereoisomer, geometric isomer, nitrogen oxide, metabolite or pharmaceutically acceptable salt, ester, solvate, hydrate, isotope-labeled compound, or prodrug thereof, having good prospects in the treatment of hyperproliferative diseases, particularly cancer, more particularly cancer associated with KAT6A and / or KAT6B.

Aiming at the problems of large flue gas nitrogen oxide generation amount, easy exceeding and serious pollution possibly existing in ammonia gas blending combustion, the invention provides an ammonia gas out-of-furnace bypass combustion blending combustion oxidation method, which comprises the following steps: preparing NO2 by virtue of an ammonia combustion system, generating O.free radicals by virtue of photo-thermal cracking of NO2, oxidizing NO in flue gas into NO2, cracking NO2 into N2, removing NO by virtue of NO2, and performing denitration by virtue of denitration, so that the nitrogen oxide in the flue gas is not easily generated. According to the method, SO2 is oxidized into SO3 through O.free radicals, the SO3 reacts with calcium for desulfurization, CO and VOCs are oxidized into CO2 and H2O, collaborative purification of multiple pollutants is achieved, reduction denitration and wet desulfurization are replaced and used for denitration and desulfurization of combustion flue gas and collaborative treatment of the multiple pollutants, and deep pollution reduction, carbon reduction, energy conservation and efficiency improvement are achieved.

Provided in the present invention are modified flavone compounds and the use thereof. The compounds are compounds shown as formula (I), and pharmaceutically acceptable stereoisomers, geometric isomers, tautomers, nitrogen oxides, hydrates, solvates, eutectic compounds, metabolites, salts, deuterated compounds or prodrugs thereof.

The invention discloses a flue gas distributed denitration process, and belongs to the technical field of fuel gas distributed energy supply. Ammonia gas is added into flue gas at an inlet of a bag-type dust collector and reacts with nitrogen oxide in the flue gas at an active site of a low-temperature denitration catalyst, so that efficient denitration can be realized at a low temperature, and nontoxic and harmless nitrogen and water are generated; reheating denitration is not needed; according to the low-temperature denitration catalyst, cerium nitrate and manganese nitrate are impregnated into mesoporous pores of mesoporous titanium dioxide submicrospheres through vacuum impregnation, glucose serves as a carbon source, p-phenylenediamine serves as a nitrogen source, and manganese cerium / nitrogen-doped titanium dioxide microspheres are obtained through hydrothermal carbonization. And then MOF-tungsten is dispersed in silicon dioxide sol to coat the manganese cerium / nitrogen-doped titanium dioxide microspheres, so that the manganese cerium / nitrogen-doped titanium dioxide microspheres have good compressive strength, wear resistance and denitration efficiency, have excellent ammonium bisulfate decomposition capability and are not easy to block.

The invention discloses an integral difunctional Mn-based composite metal oxide catalyst for eliminating nitrogen oxides and VOCs (Volatile Organic Compounds) and a preparation method of the integral difunctional Mn-based composite metal oxide catalyst. The Mn-based composite metal oxide catalyst is grown on the three-dimensional foam structure material in situ, the adsorption performance of the catalyst is remarkably enhanced by adding a small amount of adsorbent, and the activity of the catalyst is improved. When being used for NH3-SCR catalysis, the high-activity integral Mn-based composite metal oxide catalyst doped with a small amount of adsorbent has a wide temperature window and a nitrogen oxide (NOx) conversion rate gt in a medium-low temperature section; the temperature interval of 80% is 80-305 DEG C; when the catalyst is used for catalytic combustion of VOCs, the temperature for degrading 90% toluene is lower than 150 DEG C, and the low-temperature catalytic activity of the catalyst is even superior to that of numerous noble metal-loaded catalysts. In addition, the catalyst has good stability, H2O poisoning resistance and S poisoning resistance, and can be regenerated after simple heat treatment, so that the catalyst can be efficiently applied to actual flue gas treatment at low cost.

Provided in the present application is a compound represented by formula (I), or an enantiomer, a diastereoisomer, a racemate, a tautomer, a stereoisomer, a geometric isomer, a nitrogen oxide, a metabolite or a pharmaceutically acceptable salt, an ester, a solvate, a hydrate, an isotope-labeled compound or a prodrug thereof. The compound represented by formula (I) of the present application has a relatively ideal inhibitory activity with regard to KAT6A and / or KAT6B.

The invention provides an oxime-containing compound and application thereof. The oxime-containing compound provided by the invention has a structure as shown in a formula (I) or enantiomers, diastereoisomers, racemate, tautomers, stereoisomers, geometric isomers, nitrogen oxides, metabolites or pharmaceutically acceptable salts, esters, solvates, hydrates, isotope labeled compounds or prodrugs of the structure as shown in the formula (I). The oxime-containing compound provided by the invention can be used for preventing and / or treating cancers and other hyperproliferative diseases and diseases related to Hippo pathway dysfunction. # imgabs0 #

The present application relates to a kind of carbon monoxide sensor with resistance to multiple gas and detection method, belong to coal mine environment gas detection sensor field.The present application includes carbon monoxide sensor, and the method of gas detection of the sensor.Therein, sensor mainly includes carbon monoxide / hydrogen sulfide dual gas detection module, nitrogen oxide detection module, modular mainboard, main shell and main shell display window, wherein carbon monoxide / hydrogen sulfide dual gas detection module and nitrogen oxide detection module measure the gas to be measured.The present application carries out gas concentration value calculation using cross interference compensation algorithm, and the concentration of carbon monoxide gas in coal mine environment is accurately detected by setting different working modes.The present application realizes the real-time monitoring of carbon monoxide, nitrogen oxide and hydrogen sulfide multi-component gas concentration by carbon monoxide, nitrogen oxide, hydrogen sulfide composite electrochemical element design, improves the precise perception ability of intelligent mine, and guarantees coal mine safety production.

The invention relates to the field of nitrogen oxide treatment, and particularly provides preparation and application of a Fe-Mn / NbOPO4 catalyst for improving water resistance and sulfur resistance of NH3-SCR (selective catalytic reduction) reaction. The preparation method comprises the following steps: 1, preparation of an NbOPO4 carrier: mixing and stirring a niobium source and a phosphorus source, dropwise adding ammonia water, filtering and washing to obtain a precipitate, further adding a CTAB / H2O solution, adjusting the pH value with H3PO4, carrying out hydrothermal aging in a reaction kettle, and finally filtering, washing, drying and calcining; and 2, loading Fe and Mn active components, dissolving an iron source and a manganese source in water by adopting a wet impregnation method, adding the NbOPO4 carrier, stirring, carrying out rotary evaporation, drying and calcining. When the air speed is 60000mL. G <-1 >. H <-1 >, the NOx conversion rate in the temperature range of 75-297 DEG C reaches 90% or above, and in a water-resistant and sulfur-resistant performance test of 5vol.% H2O and 100ppm SO2, the reaction activity is almost not obviously reduced. The SCR reaction temperature window of the manganese-based catalyst is widened, the water resistance and sulfur resistance of the manganese-based catalyst are effectively improved, and the manganese-based catalyst has wide application prospects.

A process, system, and method for treating an alkaline solution in an acidic liquid, where the alkaline solution comprises nitrogen compounds, the acidic liquid comprises NOx compounds and radicals, the process and system is a cyclic process and system, charging feed gas and the alkaline solution into the cyclic process, cycling the acidic liquid and discharging product solution, where the process is an absorption process, absorbing Nitrogen Oxide Gases, NOx, from the gas phase; the method is making use of the process or system and thereby inhibiting biological and chemical formation of ammonia, methane, carbon dioxide, and hydrogen sulfide, the final product being spread to the fields.

Provided herein are methods of depositing molybdenum (Mo) films. The methods involve depositing a thin layer of a molybdenum (Mo)-containing film such a molybdenum oxide, a molybdenum nitride, or a molybdenum oxynitride. The Mo-containing film is then converted to an elemental Mo film. A bulk Mo film may then be deposited on the elemental Mo film. In some embodiments, the process is performed at relatively low temperatures.

The invention discloses a method for preparing 2,2,6,6-tetramethylpiperidine nitroxide free radical compound and a reaction system and the obtained product, the method comprising: adding 2,2,6,6-tetramethylpiperidine to a reactor, adding or not adding an organic solvent and stirring and dissolving; adding a catalyst containing a modified titanium silicon molecular sieve, adding a hydrogen peroxide solution, 2,2,6,6-tetramethylpiperidine and hydrogen peroxide are subjected to an oxidation reaction; the catalyst is removed from the product obtained, and the liquid-phase product is desolvated to obtain 2,2,6,6-tetramethylpiperidine nitroxide free radical compound. The method provided by the present invention prepares 2,2,6,6-tetramethylpiperidine nitroxide free radical compound in a one-step reaction, has a high yield, is easy to purify the product, and has a high purity of the piperidine nitroxide free radical compound product, and the catalyst can be reused.

The invention provides an ammonia gas synthesis method based on an osmium-platinum catalyst and nitrogen oxide, and solves the technical problem of high production cost caused by high price of a catalyst used for hydrogen reduction of nitrogen oxide in the prior art. The method comprises the following steps: respectively preparing NO, H2 and inert gas according to preset requirements; weighing an osmium-platinum catalyst, and adding the osmium-platinum catalyst into the tubular reactor containing the quartz wool; h2 is introduced into the tubular reactor, the reactor is heated to 200-400 DEG C, the osmium-platinum catalyst is pretreated at the temperature, and then the osmium-platinum catalyst continues to be cooled to the room temperature under purging of H2; meanwhile, NO, H2 and inert gas are introduced into the reactor to form mixed gas, the temperature in the tubular reactor is raised to a preset temperature, then heat preservation is conducted, the mixed gas reacts under the action of the osmium-platinum catalyst, and then ammonia gas can be synthesized. The method has lower energy consumption and higher yield, and the used catalyst is lower in cost and better in performance.

Provided are a compound for recoverying a p53 mutation function and use thereof, particularly relating to a compound represented by Formula M, or an enantiomer, a diastereomer, a racemate, a tautomer, a stereoisomer, a geometric isomer, a crystal form, a nitrogen oxide, a metabolite or pharmaceutically acceptable salt, ester, solvate, hydrate, isotope-labeled compound or prodrug of the compound.

The present invention relates to the technical field of phosphorus-nitrogen synergistic flame retardant materials, and particularly relates to triazine ring compounds, preparation methods, triazine ring phosphorus-containing flame retardants and applications. The chemical structure of the triazine ring compound simultaneously has a phosphorus-containing group and a nitrogen-containing group. During the combustion process, the phosphorus-containing group forms P· radicals and PO· radicals, which quench H· and HO· radicals in the gas phase, having a gas-phase flame retardant effect. At the same time, the phosphorus-containing group is further oxidized to form phosphoric acid, promoting the formation of a dense carbon layer in the polymer matrix, achieving the effect of condensed-phase flame retardancy; the nitrogen-containing group can form non-combustible components such as ammonia and nitrogen oxides during the combustion process, effectively reducing the concentration of oxygen and combustible gases in the combustion area, achieving the purpose of gas-phase flame retardancy; the phosphorus-containing group and the nitrogen-containing group can exert the phosphorus-nitrogen synergistic flame retardant effect, thereby achieving the purpose of high-efficiency flame retardancy.

The invention relates to the technical field of flue gas multi-pollutant synergistic purification, in particular to a preparation method of an ultralow-temperature denitration and decarbonization catalyst and application of the ultralow-temperature denitration and decarbonization catalyst to synchronous removal of nitrogen oxides and carbon monoxide in industrial flue gas. The catalyst is prepared by a two-step method comprising the following steps: S1, dispersing a cerium source and a platinum source in absolute ethyl alcohol, and synthesizing a Pt / CeO2 monatomic catalyst by a hydrogen combustion method; s2, compounding an iron source and Pt / CeO2 through a coprecipitation method, drying and calcining in a nitrogen atmosphere to obtain the Fe-Pt / CeO2 composite catalyst. The key process parameters comprise hydrogen / oxygen flow velocity, calcination temperature and mass ratio of the iron source to the carrier. The synergistic removal efficiency of the catalyst on NOx and CO at the ultralow temperature of 50-120 DEG C reaches 85% or above, and the bottleneck that the low-temperature activity of a traditional catalyst is insufficient is broken through; sulfur resistance and water resistance are remarkably improved through the porous structure and the oxygen storage capacity of CeO2, and the activity retention rate is larger than 90% when SO2 and H2O are contained; the device is suitable for high-efficiency purification of complex flue gas of steel, waste incineration and the like, and meets the policy requirements of pollution reduction, carbon reduction and synergistic interaction.

The invention relates to a catalyst for the selective reduction of NOx, based on an IZM-10 AEI zeolite and at least one transition metal, and to its preparation method comprising at least mixing, in an aqueous medium, a FAU-type zeolite having a SiO2 (FAU) / AI2O3(FAU) molar ratio of between 10 and 60 inclusive and a mass percentage of sodium in cation form of less than 0.005%, a nitrogen-containing organic compound R, wherein R is (6R,10S)-6,10-dimethyl-5-azoniaspiro[4,5]decane in its hydroxide form, and optionally sodium hydroxide, until a homogeneous precursor gel is obtained; ii) a hydrothermal treatment step; iii) a step of exchanging at least one ion with a solution comprising at least one species capable of releasing a transition metal; iv) a heat treatment step by drying and calcination.

The present application belongs to the field of denitration agent preparation, and provides a selective non-catalytic reduction denitration agent and a preparation method thereof. First, urea is heat treated to change hydrogen bond strength and intermolecular force in the crystal, and increase thermal motion of urea molecules, so as to cause loose arrangement between molecules, increase exposure of reaction sites, and increase contact area of molecules, thereby increasing reaction rate. A phosphoric acid group is introduced into the urea after heat treatment, and phosphonated urea is formed through chemical reaction, so as to improve adsorption and reaction activity of the urea. This process helps to enhance the combination ability of urea and NOx, thereby improving the denitration efficiency. Appropriate amounts of sodium carbonate, sodium chloride and hydroxyl iron oxide are added to the reaction system, which helps to promote the activity improvement of the denitration agent, and can effectively deal with nitrogen oxide pollution in industrial waste gas.

The utility model discloses a reaction device for normal-pressure leaching of nitric acid, which is characterized in that in the reaction process, nitric oxide in a reaction kettle enters an absorption tower through a nitric oxide exhaust outlet, a first pipeline and a nitric oxide gas inlet, and an oxygen supply device supplies oxygen to the absorption tower; an absorption liquid circulating pump I conveys an absorbent in the absorption tower circulating device to an absorbent circulating inlet I and enters the absorption tower, the absorbent absorbs nitric oxide gas to form nitric acid, nitric oxide released in the process reacts with oxygen to generate nitrogen dioxide, and the nitrogen dioxide reacts with the absorbent to generate nitric acid; according to the device, nitrogen oxide gas generated in the reaction process can be absorbed, the obtained absorption acid (nitric acid) can be cyclically applied to the leaching reaction, and tail gas can be discharged after reaching the standard. And the method is environment-friendly.

The invention relates to a silver-nitrate recovery method comprising the process steps of preparing a nitric-acid solution in a reactor tank and feeding silver sludge into the prepared acid solution to obtain an intermediate product. The silver-nitrate recovery method further comprises introducing N2 onto the intermediate product, sweeping the resulting NOx gases with the introduced N2 and reacting them with H2O2 so as to eliminate them, and collecting the silver nitrate formed in a vessel.

The invention provides a smoke pollutant near-zero-emission full-dry-method treatment system based on ultra-clean electric precipitation. The smoke pollutant near-zero-emission full-dry-method treatment system is composed of a smoke system, an activated carbon system and a desulfurization byproduct preparation system. The flue gas system comprises a flue system, an ultra-clean electric precipitation system, a heat exchange system and a nitrogen oxide circulating system; the activated carbon system comprises a desulfurization and denitrification system, an activated carbon desorption and regeneration system and an activated carbon transportation system. The flue gas is subjected to dust removal, desulfurization, denitration and other processes, so that near-zero emission of pollutants is achieved, and no secondary pollution is generated after the whole flue gas treatment process is finished; the desorbed desulfurization by-product can be prepared into commercial salt or sulfuric acid for sale according to requirements, and the desorbed nitric oxide returns to the hearth to inhibit the generation of new nitric oxide. The system integrates various flue gas pollutant treatment technologies such as ultra-clean electric precipitation, activated carbon low-temperature adsorption desulfurization and denitrification, activated carbon desorption regeneration and nitrogen oxide furnace returning, the flue gas pollutant treatment efficiency is improved, meanwhile, secondary pollutants are thoroughly eliminated, and full-dry-method near-zero emission of flue gas pollutants is achieved.

The present invention relates to a process for removing nitrogen oxides, nitrous oxide and carbon monoxide from a gas stream (1), comprising: (a) oxidizing nitric oxide in the gas stream to form nitrogen dioxide by adding an oxygen-containing gas (3) to the gas stream (1), thereby obtaining a nitric oxide-depleted gas stream, and washing the nitric oxide-depleted gas stream with water (7) to obtain a nitric oxide-depleted gas stream (11) to remove nitrogen oxides from the gas stream (1); (b) oxidizing at least a portion of the carbon monoxide in the nitrogen oxide-depleted gas stream (11) to form carbon dioxide, thereby obtaining a carbon monoxide-depleted gas stream (19); (c) converting nitrous oxide in the carbon monoxide-depleted gas stream (19) to nitrogen and oxygen if the carbon monoxide-depleted gas stream (19) does not contain carbon monoxide, or converting nitrous oxide in the carbon monoxide-depleted gas stream to nitrogen and oxygen and / or carbon dioxide if the carbon monoxide-depleted gas stream (19) still contains carbon monoxide, or converting nitrous oxide in the carbon monoxide-depleted gas stream (19) to nitrogen and oxygen and / or carbon dioxide if the carbon monoxide-depleted gas stream (19) still contains carbon monoxide; to obtain a purified tail gas stream (25).

The invention discloses a novel method for manufacturing p-type poly, which comprises the following steps of: providing a substrate, putting the substrate into a reaction cavity, and introducing 30000-40000 sccm of oxygen at the temperature of 500-700 DEG C or introducing 5000-20000 sccm of nitrous oxide gas at the temperature of 200-700 DEG C, so that a tunneling oxide layer Tunnel SiOx with the thickness of 0.1-2 nm grows on the back surface of a battery piece; the preparation method comprises the following steps of: adding nitrogen oxide or nitrous oxide into a substrate, removing oxygen or nitrous oxide at the temperature of between 200 and 700 DEG C, and introducing mixed gas of 3000 to 4000sccm of silane, 100 to 1000sccm of borane and 2000 to 20000sccm of hydrogen, so that a bottom layer Poly with the thickness of between 5 and 100nm grows on the substrate; the preparation method comprises the following steps of: removing mixed gas of silane, borane and hydrogen at the temperature of between 200 and 700 DEG C, introducing oxygen at the temperature of between 30000 and 40000 sccm or nitrous oxide gas at the temperature of between 5000 and 20000 sccm, and generating a silicon oxide (SiOx) multifunctional laminated layer with a certain thickness of between 0.5 and 30 nanometers. According to the method, the original p-type Poly layer is initially prepared in a PECVD mode, and then auxiliary doping is carried out through laser and annealing processes so as to accurately control the effective doping concentration of boron atoms.