310results about How to "Reductive" patented technology

The invention discloses a stripping processing method of textile printing defective items, which implements stripping processing on printing defective items and particularly on dyeing defective items by using an active material which is generated by initiating and catalyzing an oxidant or a reducing agent under ultraviolet light and low temperature and has strong oxidability or reducibility as a stripping agent so as to be convenient for the rehandling or redyeing of textiles. Because of the adoption of various active materials which are generated by ultraviolet light initiation and optical catalysis as the stripping agent, the method can obtain an approving stripping effect under normal pressure and temperature, thereby avoiding the consumption of a large amount of energy sources in a traditional high-temperature stripping method and the use of a large amount of reducing agent, oxidant and the like. The stripping technology of the invention has the advantages of high efficiency, energy saving, emission reduction, simple equipment and process and short procedures.

The invention discloses an advanced oxidative coupling device and process for treating organic wastewater difficult to degrade. A main device body comprises an ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area, an ozone oxidation-microelectrolysis/Fenton area, a coagulation area and an inclined plate sedimentation area, wherein the ozone oxidation-multi-dimensional electro-catalysis/microelectrolysis area comprises a multi-dimensional electrolysis/microelectrolysis area at the upper part and an ozone oxidation area at the lower part; the ozone oxidation-microelectrolysis/Fenton area comprises a microelectrolysis/Fenton area at the upper part and an ozone oxidation area at the lower part. The device combines four levels of advanced oxidation systems, and electrocatalytic oxidation, ozone oxidation, Fenton oxidation and a microelectrolysis reaction are mutually coupled in function, so that an organic matter difficult to degrade is subjected to multi-level oxidation to realize complete oxidative cracking; when the device is used for treating the organic wastewater difficult to degrade, the yield and the production rate of *OH are increased, the liquid phase transfer process is accelerated, the overall current efficiency of the device is increased, operation expenses are saved, flexible regulation and control of a process unit are realized, and the device can be used for treating various kinds of organic wastewater difficult to degrade.

The invention discloses a method for detecting a single molecule of a single silicon nanowire in real time based on a surface enhanced raman scattering (SERS) effect. The method comprises the following steps of: 1) dispersing the silicon nanowire of which a surface oxide layer is removed in aqueous solution of cetyltrimethyl ammonium bromide (CTAB), adding metal silver ion-containing solution into dispersion of the silicon nanowire under stirring, reacting for a period of time, centrifuging a product and collecting precipitates, and dispersing the obtained silicon nanowire on which the surface is loaded with silver particles in ethanol; and 2) dropwise adding ethanol dispersion of the silicon nanowire into a groove of a glass slide with the groove, adding aqueous solution of molecules to be tested into the groove after ethanol is volatilized, sealing the groove by using cover glass, irradiating the silicon nanowire at the groove by using laser of a certain wavelength, and collecting araman signal to realize real-time detection of the single molecule. The method is simple and fast and has a mild reaction condition, the prepared material has stable performance and higher SERS response, the detection of the single module in a solution system is realized, and a good platform is provided for researching the reaction of the single module in the solution system.

The invention discloses an antioxidation method of nano copper powder, which comprises the steps of: preparing an organic acid aqueous solution the mass concentration of which is 0.1 to 2 percent and controlling the pH within the range of 1 to 5; adding copper powder into the organic acid aqueous solution, mixing continuously, then standing for a certain time, and filtering the supernatant liquor; preparing copper powder anticorrosive solution the mass concentration of which is 0.1 to 2 percent; adding copper powder pulp into the copper powder anticorrosive solution, fully mixing, standing, filtering the supernatant liquor, and obtaining the copper powder pulp; carrying out metathesis on the copper powder pulp for 2 to 4 times by utilizing an organic solvent, and then classifying the copper powder pulp; weighing alcohol-soluble organic the weight of which is 0.1 to 5 percent of that of the copper powder in the copper powder pulp, dissolving the alcohol-soluble organic into an alcohol solvent, preparing a copper powder anticorrosive solution the concentration of which is 0.25 to 5 percent, and adding the obtained copper powder pulp into the copper powder anticorrosive solution and mixing for 0.5 to 2 hours. By the antioxidation method of nano copper powder, a layer of protective film can be covered on the surface of the nano copper powder and effectively isolate oxygen, thus the purpose of antioxidation of copper powder is achieved.

The invention discloses a metal loaded biomass semicoke catalyst and a preparation method thereof. The preparation method comprises the following steps: carrying out equivalent-volume impregnation ona biomass precursor by adopting an aqueous solution of metal active component soluble salt, drying, then heating to the temperature of 600-700 DEG C, and carrying out pyrolysis, so that the metal loaded biomass semicoke catalyst loading metal active components on a biomass semicoke carrier is obtained. The metal active components comprise a reactive metal Ni and a second reactive metal composed ofone of reactive metals Fe, Co and Cu, Ni accounts for 5-30% of the mass of the catalyst, and the second reactive metal accounts for 2-10% of the mass of the catalyst, and the balance is the biomass semicoke catalyst generated through biomass pyrolysis. The catalyst disclosed by the invention has large specific surface area and high dispersity of the metal active components, is used for catalyzinga tar water vapor reforming process of a biomass gasification technology and is high in tar conversion rate.

The invention discloses an electroslag remelting method for high-purity austenite nitrogenous stainless steel for nuclear power. The method comprises the following steps: (1) selecting a cylindrical metal electrode for electroslag; (2) treating the metal electrode by adopting a machining method; (3) carrying out welding treatment and heating treatment on the metal electrode and a stainless-steel false electrode for the electroslag; (4) carrying out slag melting treatment by selecting a slag system which contains 50%-60% (by weight) of CaF2, 15%-25% (by weight) of Al2O3, 10%-20% (by weight) of CaO, 5%-10% (by weight) of MgO and 3%-6% (by weight) of SiO2; (6) carrying out feeding treatment; (7) carrying out die cooling. According to the austenite nitrogenous stainless steel prepared by the method, the forming of a steel ingot surface is good, and the inclusion content is low and can reach that the inclusion content of a coarse series of a class A is not higher than 0.5, the inclusion content of a fine series of the class A is not higher than 0.5, the inclusion content of a coarse series of a class B is not higher than 0.5, the inclusion content of a fine series of the class B is not higher than 0.5, the inclusion content of a coarse series of a class C is not higher than 0.5, the inclusion content of a fine series of the class C is not higher than 0.5, the inclusion content of a coarse series of a class D is not higher than 0.5, and the inclusion content of a fine series of the class D is not higher than 1.0.

The invention belongs to the field of nano-material preparation, and provides a simple and novel preparation method for silver and gold nano-particles. The preparation method comprises the following steps of: taking silver acetate, silver nitrate and chloroauric acid as precursor preparation raw materials, taking a sulfonic acid surfactant as a reducing agent and a protecting agent, adjusting the pH value of a preparation system by adding substances of sodium carbonate or ammonia water and the like, and heating the reaction system in a certain temperature range to obtain the silver and gold nano-particles. The product obtained by the method provided by the invention has the characteristics of being uniform in particle size, good in dispersibility and stability, and the like; moreover, the sulfonic acid surfactant is low in price and easy to get, the production process is simple and low in cost; the method is another new preparation way for preparing the silver and gold nano-particles.

The invention provides a method for measuring nickel content in low alloy steel by spectrophotometry. The method comprises the steps of: (1) dissolving a sample; (2) adding a proper amount of perchloric acid till smoking, and adding distilled water so as to obtain a solution a: (3) adding potassium sodium tartrate and ammonium citrate into the solution to serve as dual masking agents; (4) adding a strong base, then adding ammonium persulfate as an oxidizing agent, and then adding a dimethylglyoxime developer so as to react with nickel to generate a red chelate; (5) conducting measuring: zeroing the solution obtained in step (4) with a reference solution, carrying out color comparison at a position of 530nm on a spectrophotometer, thus measuring absorbance A1; (6) calculating the nickel content according to the absorbance A1. By applying dual masking agents, the method of the invention substantially improves the accuracy and precision of a measured result on the basis of guaranteeing rapid measuring.

The invention relates to a functional material for preparing multifunctional healthy running water and a preparation method thereof. The functional material consists of an ingredient A and an ingredient B, wherein the ingredient A is made by preparing powdered tourmaline, ferriferrous oxide, zinc, cuprum, magnesium, ferrum and manganese and bonding auxiliary material into pieces by a special device at low temperature, and the ingredient B is made by preparing medical stone, muyu stone, meijiu jade, sepiolite, biotite, slag, calcium sulfite and pottery clay into ion complex by means of shaping and high-temperature sintering. The ingredient A is prepared by the following steps that: the materials are weighted in proportion and then mixed, heated, cooled and ball-milled and pulverized into micron-sized powder successively; an adhesive is added into and mixed with the mixed powder after ball milling; then the mixture is prepared into pieces by means of a punch; the black pieces are delivered into a heater at constant temperature; thus the products are cooled and packed for use. The ingredient B is prepared by the follow steps that: the materials are weighted in proportion and are uniformly mixed one by one; an adhesive is added into and mixed with the mixture into blocks; the blocks are poured into a tablet press to be made into pieces; and the pieces are dried and sintered in a special sintering furnace, thereby producing the required products. Water processed by the material for multifunctional healthy running water does not contain toxic and harmful substances and has no odor and good taste; the water has moderate hardness and contains minerals and microelements required by a human body; the water is weakly alkaline and micro-clustered; the oxidoreduction potential of the water is lowered to be a negative value between -200 and -550 MV; and the nutritional function of the water is strong.

The invention relates to a composite light absorption layer of a perovskite solar cell and a preparation method thereof, wherein the composite light absorption layer is formed by a three-dimensional perovskite type light absorption material film and a novel two-dimensional perovskite type light absorption material film. A light absorption layer skeleton is coated with the three-dimensional perovskite type light absorption material film; and the three-dimensional perovskite type light absorption material film is coated with the two-dimensional perovskite type light absorption material film to form a hole transport layer. The two-dimensional perovskite type light absorption material film is made of NMX4, wherein the N is one of thiourea, 2,5-Dithiobiurea, thiocarbohydrazide, or beta-aminoethyl isothiourea, the M expresses Pb<2+>, Sn<2+>, Ge<2+>, Cu<2+>, Ni<2+>, Mn<2+>, Zn<2+>, Fe<2+>, Sb<3+>, and Bi<3+>, or a mixture; a, and the X represents a CI<->, Br<->, I <->, or a mixture. According to the invention, with the perovskite composite light absorption layer, the photoelectric conversion efficiency is stabilized and improved.

The invention discloses a process for preparing an LiFePO4/C composite cathode material by a precursor in-situ polymerization-carbothermic process. The process comprises that a phosphate group compound and a ferric iron source compound are dissolved in water in a mole ratio of (1-1.1):1, then an organic monomer is added, an oxidizing agent is added to oxidize and polymerize the monomer which coats a generated iron phosphate surface, the pH of a solution system is controlled to be between 1.5 and 3, a precipitate is washed, cleaned, then subjected to ball mill mixing with a lithium source and roasted in protective gas, and then the LiFePO4/C composite cathode material is obtained. Polymer which coats the iron phosphate surface is pyrolyzed and carbonized into carbon reduction ferric iron, serves as a carbon source in a roasting process and facilitates limiting of agglomeration of microscopic particles of the material. According to the LiFePO4/C composite cathode material prepared by the process, the primary particle size of the material is nanoscale, and the material is good in electrical conductivity and performance under conditions of high multiplying power and large current charging and discharging and has large specific capacity.

The invention relates to a method for improving electrochemical performance through reducing graphene oxide (GO) by using a hydrogen (H2) and argon (Ar) mixed plasma. The method comprises the following steps of spin-coating GO on ITO (Indium Tin Oxide) conducting glass, drying, then, placing the ITO conducting glass into a plasma discharge chamber, wherein a graphite electrode is connected to the inside of the discharge chamber, and the electrode is connected with a radio-frequency alternating-current power supply capable of generating an inductive coupling plasma source; before discharging, introducing Ar, expelling air, then, starting a vacuum pump to vacuumize to about 2Pa, and introducing H2 and Ar mixed gas; when the total gas flow of H2 and Ar is 3sccm, and the flow ratio of H2 to Ar is 2 to 1, turning on the alternating-current power supply to generate a H2 and Ar mixed plasma, wherein the power of alternating current is 70w; directly acting the plasma flow on a GO film, and discharging for 5min to obtain a reduced graphene oxide (rGO) film. The method is not only capable of effectively reducing GO, but also is rapid, efficient, green and free of introducing impurities. The prepared rGO film is used as an electrode material, and the specific capacity of the rGO film is 211.8F/g which is higher than the specific capacity of rGO obtained by using other reducing methods.

The invention belongs to the technical field of bacterial fermentation and functional bacteria screening, and discloses a caproic acid bacterium proliferation culture medium and a caproic acid fermentation and caproic acid bacterium screening method. The proliferation culture medium comprises 10.0 g/L of peptone, 10.0 g/L of beef powder, 3.0 g/L of yeast powder, 1.0-5.0 g/L of glucose, 1.0 g/L ofsoluble starch, 5.0 g/L of sodium chloride, 3.0-6.0 g/L of sodium acetate, 0.5 g/L of cysteine hydrochloride, 0.3-1.0 g/L of ascorbic acid, 0.5-2.0 g/L of agar and distilled water composition. Nutrients such as 0.005-0.01 g/L of hemin are selectively added, so that the growth and division of some extreme bacteria are facilitated, the cell density is increased, and the screening range of caproic acid bacteria is expanded. Ethanol and sodium butyrate are added midway to promote the synthesis of hexanoic acid. A fermentation container is transparent, and fermentation liquor is preliminarily screened according to the conditions of gas production and acid production in the fermentation liquor, so that the screening efficiency is improved.

The invention discloses a method for producing nanometer humus refined powder. The method for producing nanometer humus refined powder comprises the following production steps: raw material treatment: crushing brown coal into fine particles with a grain size smaller than 16 meshes through a crusher, then drying the fine particles to water content of 9 to 13 percent by using cold drying, and performing filtration and screening for future use; proportioning treatment: mixing brown coal with reagent according to a ratio of 100:1, and putting the proportioned materials into a grinder; grinding treatment: grinding the proportioned materials to a nanometer scale by using a planetary trajectory ball-milling equipment with balls and a cylinder which are made of special materials, emit less heat and dissipate heat quickly, so as to change molecular structures and generate nanometer humus medium powder in a machine body; packaging treatment: settling, outputting and packaging the nanometer humus powder to obtain the nanometer humus refined powder disclosed by the invention. The nanometer humus refined powder obtained through the method can be used for conditioning soil activity, controlling saline-alkali soil and sand soil, controlling heavy metal pollutants in soil, reducing radioactive contamination and purifying sewage.

The invention relates to slag washing materials for converter steel-making and a preparation method and a using method thereof. The common exothermic steel slag washing materials for the converter steel-making comprise a main calcium aluminate slag system and an exothermic compound, wherein the main calcium aluminate slag system is produced by calcination of limestone and bauxite materials at the temperature of between 1,200 and 1,800 DEG C. The slag washing materials comprise the following compositions as calculated by the total weight of the slag washing materials: 0 to 60 percent of CaO3, 20 to 45 percent of Al2O3, 1 to 15 percent of metallic aluminum, 1 to 8 percent of the exothermic compound, less than or equal to 10 percent of SiO2 and less than or equal to 0.5 percent of S. The invention also discloses a method for preparing the slag washing materials and a method for using the same. The slag washing materials can react quickly and have better deoxidation and desulfurization effect. Moreover, partial deoxidizing materials are saved and the production cost of steel enterprises is reduced.

The invention belongs to the technical field of preparation of promoters for high polymer materials and particularly relates to a preparing method for a multifunctional and efficient beta nucleating agent for isotatic polypropylene materials. It is indicated that polydopamine can be used in the polypropylene beta nucleating agent. The multifunctional and efficient beta crystal nucleating agent is high in nucleating efficiency, good in compatibility with polypropylene matrixes, simple in preparing method and capable of improving the thermal oxidation stability of polypropylene materials.

The invention relates to a kind of high-powered material and the preparation method, especially it is a kind of self gleamy material which spreas of itself to compose department of alumnic acid. the craft follows this, first dispense the amotate liquor of finite concentration using Eu2O3, Dy2O3 and SrCo3, then mix the liquor with Al(NO3) in finite concentration, after add quantitative additive liquor and carbamide to produce compounded liquid, heat up it above the electric fire, later, observe it till loose spumescence outcome appears, cool the outcome maturely in room temperature, porphyrize it thus product is ok. Compared with the traditional art of solid phase reaction in high temperature, the art has many advantages, for example, it saves energy and has long time and brightness of afterlight. Even using it in exterior for long time, it is not ratioactive and environmental.