85 results about "Surface chemical reaction" patented technology

A method of forming a passivation film in a flat panel display device includes forming the flat panel display device on a substrate, bringing the flat panel display device into a chamber in order to form the passivation film, injecting precursors containing constituent elements of the passivation film into the chamber where the precursors include at least oxygen plasma, ammonia plasma, or nitrogen plasma, and forming the passivation film of an inorganic insulating material at a temperature of 20-220° C. through a surface chemical reaction between the precursors by a plasma enhanced atomic layer deposition method.

Provided are a method of manufacturing a transparent N-doped p-type ZnO semiconductor layer using a surface chemical reaction between precursors containing elements constituting thin layers, and a thin film transistor (TFT) including the p-type ZnO semiconductor layer. The method includes the steps of: preparing a substrate and loading the substrate into a chamber; injecting a Zn precursor and an oxygen precursor into the chamber, and causing a surface chemical reaction between the Zn precursor and the oxygen precursor using an atomic layer deposition (ALD) technique to form a ZnO thin layer on the substrate; and injecting a Zn precursor and an nitrogen precursor into the chamber, and causing a surface chemical reaction between the Zn precursor and the nitrogen precursor to form a doping layer on the ZnO thin layer.

The present invention discloses a molecular sieve catalyst, a preparation method thereof and the application of the molecular sieve catalyst for preparing for ethene by dehydrating ethanol. The catalyst uses ZSM-5 molecular sieve or HZSM-5 which is obtained by acidifying the ZSM-5 as a support; oxide or salt of heteropoly acid or vanadium (V) or titanium (Ti) is used as active component; the active component is introduced into the support by a dipping method or a surface chemical reaction modifying method to be dried and calcined in a muffle furnace to obtain the molecular sieve catalyst. The catalyst is used in ethanol dehydration to prepare for the ethene and not only has high ethanol conversion rate and ethene selectivity and long service life, the maximum conversion rate of ethanol dehydration reaction can be 100 percent, and the maximum selectivity of the ethene can be 99.4 percent; but the catalyst also solves the technical problems of low airspeed, high temperature, high energy consumption, and the like, in the reaction of preparing for the ethene by dehydrating the ethanol; the catalyst is applicable to the industrial production of preparing for the ethene by dehydrating the ethanol and has the effects of improving production efficiency and saving energy source.

A catalytic process and a nano material for the conversion of moist carbon dioxide into methanol, propyne and oxygen have been developed. In the process invented, hydrogen is produced from water in a catalytic reaction, when the moist carbon dioxide enters into the catalytic reactor, resulting in C—O and H—OH bond breakage at a relatively low temperature and at atmospheric pressure in a single step using a combination of catalytic materials comprising at least three metals dispersed on a catalyst support, preferably anatase form of titanium dioxide, to induce a multifunctional surface chemical reaction for the production of oxygenated products such as hydrocarbons of different chain lengths.

The invention relates to an ultra-paramagnetic material of load CuO, which is composed of ultra-paramagnetic particles, a mesoporous material layer, and CuO loaded on the internal and the external surfaces of mesoporous material layer; the preparation method includes: produce ultra-paramagnetic particle or its infusible precursor with the common sedimentation method; cover a layer of compact SiO2 or molecular sieve on the surface of the ultra-paramagnetic particle or the infusible precursor chemically with the sol-gel method; increase the temperature and maintain the temperature in gas atmosphere; samples obtained are placed into infusible cupric salt solution for separation, washing, filtering, and drying; burn in gas atmosphere; obtain the material with performances such as ultra-paramagnetism, catalyzing, and decoking. On one hand, the invention solves the problem of stability and conglobation of ultra-paramagnetic particle in the using process, and on the other hand, the invention makes it easier to separate catalyzer and desulfurizer in the using process. Meanwhile, the ultra-paramagnetic material of load CuO is also an infrared radiation material or microwave absorption material with high performance.

Compound semiconductor devices and methods of doping compound semiconductors are provided. Embodiments of the invention provide post-deposition (or post-growth) doping of compound semiconductors, enabling nanoscale compound semiconductor devices including diodes and transistors. In one method, a self-limiting monolayer technique with an annealing step is used to form shallow junctions. By forming a sulfur monolayer on a surface of an InAs substrate and performing a thermal annealing to drive the sulfur into the InAs substrate, n-type doping for InAs-based devices can be achieved. The monolayer can be formed by surface chemistry reactions or a gas phase deposition of the dopant. In another method, a gas-phase technique with surface diffusion is used to form doped regions. By performing gas-phase surface diffusion of Zn into InAs, p-type doping for InAs-based devices can be achieved. Both bulk and nanowire devices using compound semiconductors can be fabricated using these surface and gas-phase doping processes.

Provided is a method of manufacturing a thin film transistor (TFT) including a transparent ZnO thin layer that is formed at a low temperature by causing a surface chemical reaction between precursors containing elements constituting the ZnO thin layer. The method includes the steps of: depositing a gate metal layer on a substrate and forming a gate electrode using photolithography and selective etching processes; depositing a gate insulator on the substrate having the gate electrode; forming source and drain electrodes; and depositing a ZnO thin layer on the gate insulator using a surface chemical reaction between precursors containing elements constituting the ZnO thin layer.

A method of preparing monomolecular layer polysilane fluorescence sensing thin film sensitized to nitroarene includes steps of: cutting substrate, preparing lotion, preparing active substrate, preparing silanized substrate, preparing polysilane, and preparing monomolecular layer polysilane fluorescence sensing thin film. The invention assembles a monolayer of silanization agent with chlorine functional group at terminal to a glass substrate surface, polysilane with lithium at terminal reacts with the alkyl chloride to be chemically combined on the surface of the substrate, conjugated fluorescence macromolecule is introduced into the sensing thin film, hypersensitization of the thin film sensor is realized, and problem of stability and permeability for solid fluorescence sensor is solved. Advantages of the invention are: stability is good, life time is long, sensitivity is high, the fluorescence sensing thin film can be used on sensor and detection instrument for detecting nitroarene-containing compound, and the fluorescence sensing thin film sensed nitroarene compound can be directly detected by fluorescence instrument.

The invention discloses a kind of denatured layer-shape silicate, the nano polyethene compounded of the layer-shape silicate and the polythene, and the method of preparation. The mentioned denatured layer-shape silicate is the layer-shaped silicate of 60-90 wt%, and after processed by the processing agent of 1-40 wt%, the layer-shape silicate and the processing agent make the ion-exchange reaction or the surface chemical reaction, and when the polymer is inserted in the layer of the layer-shape silicate, the polyethene-layer-shape silicate nano complex materials come into being; the mentioned polythene-layer-shape silicate nano complex materials includes: the polyethene of 50-98 wt%, the denatured layer-shape silicate of 1-40 wt% and the assistant agent of 1-30 wt%; the nano polythene compounded of the denatured layer-shape silicate.

The invention belongs to the technical field of membrane science and provides a preparation method for a porous superhydrophobic membrane with structural gradient changes. The preparation method includes the following steps: utilizing a plasma technology to modify a basement membrane so that the porosity of the membrane can be increased; respectively adopting a coating method and an in-situ sol-gel method to prepare composite membranes with gradient changes of micron and nanoscale structures; and utilizing the surface chemical reaction of a low surface energy substance to obtain a superhydrophobic membrane through modification. The method utilizes plasma treatment to increase the surface porosity of the basement membrane; the basement membrane is coated with micron-sized particles; nanoscale particles can be generated on the surface of the basement membrane and the micron-sized particles in-situ; and the prepared superhydrophobic membrane can have characteristics of porousness and structural gradient changes by regulating the sizes and load capacity of the microparticles and nanoparticles on the surface of the basement membrane. The preparation method solves the problem of membranehole blockage caused by the direct coating method; new ideas of constructing multi-level rough structures can also be provided; and the preparation method is simple and low in cost, so that the preparation method has wide application prospects in the field of membrane separation.

A pulse discharge is caused between an electrode in an insulating nozzle 2 jetting a gas in vacuum and a skimmer 8. An apparatus for performing the method includes an insulating nozzle 2 perforated with a gas jet hole 2a at a front end thereof and having a needle-like electrode 5 at an inside thereof, and includes a skimmer 8 formed in a funnel-like shape and having an opening portion 8a at a front end thereof. The opening 8a is arranged at a position remote from the gas jet hole 2a of the insulating nozzle 2 by a predetermined distance. The method and apparatus can be used in the field of measurement, material synthesis and the like with an object of surface science, and can form simultaneously and with high intensity both pulsed metastable atom beam and pulsed ultraviolet radiation which can be preferably used as a probe for investigating the electronic state at a surface of a substance and several layers on the inner side of the surface. It can also preferably be used for removing contamination or for depositing materials on the surface of a substrate by surface chemical reaction.

The invention discloses a surface hydrophilic modified method of polyvinylchloride hollow fibre porous film, which comprises the following steps: immersing polyvinylchloride hollow fibre porous film in the kalium hypermanganicum at 0.01-0.64 mol per l and strong alkali solution at 0.5-6 mol per l for 10-100 min at 30-75 deg.c; taking the porous film out of solution; washing the film through water; immersing the film in the sulfite at 0.1-2 mol per l until the brown film color fades; producing hollow fiber porous film with high penetration rate.

The invention belongs to the technical field of material preparation, and particularly relates to a preparation method and manufacturing equipment for TMDCs (two-dimensional transition metal disulphide compound single crystals). The controllability and the sample quality of preparation of TMDCs samples are improved by regulating the volatilizing rate of a precursor by directly controlling the reaction temperature on the surface of a metal through current, voltage, electromagnetic waves and the like loaded on a metal foil precursor. Meanwhile, the overall gas phase deposition process is a surface chemical reaction; the consumption amount of a reaction precursor is low; the purpose of producing the TMDCs continuously for a long time can be achieved. In the process of preparing the TMDCs by adopting the equipment, metal oxide powder is not required to be taken as the precursor, so that the waste of the precursor is avoided, and the metal precursor is utilized repeatedly. The method and the equipment for preparing the TMDCs can be used for hot wall and cold wall CVD (chemical vapour deposition) systems, and has good universality.

The relates to a room-temperature NO2 sensor based on graphene-coated alpha-Fe2O3 compound and a preparation method thereof, which belong to the technical field a semiconductor metal oxide gas sensor.The sensor comprises a sold Al2O3 insulation ceramic tube having two annular gold electrodes, a semiconductor sensitive material coating the annular gold electrode and the Al2O3 insulation ceramic tube, and a nickel-chromium alloy heating coil passing through the Al2O3 insulation ceramic tube. The graphene-coated alpha-Fe2O3 compound sensitive material is obtained by water bath and a hydrothermalmethod, a high specific surface area of graphene, gas adsorption capability, a fast carrier migration rate and good conductivity, and heterojunction formed between graphene and the alpha-Fe2O3 are used, so that a chemical reaction of the surface of detected gas is increased, charge transfer between rGO and alpha-Fe2O3 is formed, sensitive characteristic of the sensor on NO2 is effectively increased, work temperature of the sensor is reduced to room temperature, and the sensor has a wide application prospect on the NO2 content aspect in detection microenvironment.

The invention provides an endotracheal tube with long-acting bacterial adhesion prevention and a preparation method of the endotracheal tube. A surface chemical self-assembling method is adopted to carry out surface modification on a medical PVC endotracheal tube; by virtue of steps such as surface modification of the PVC endotracheal tube, synthesis of antibacterial sol, chemical reaction of a substrate surface and surface of antibacterial liquor, so that photocatalysis antibacterial components are uniformly and firmly loaded on the surface of the endotracheal tube to form a film, so that the surface-modified endotracheal tube has good bacterial adhesion prevention and visible-light induced sterilization performance, is lasting in antibacterial effect and high in chemical stability.

The invention discloses a floor surface treatment technology. The technology includes the following steps that I, an oak plain plate of a floor is coated with a ferrous sulfate solution; II, surface chemical reaction is conducted on the floor, and balancing is conducted; III, the surface of the floor is coated with emulsion paint; IV, infrared drying is conducted on the floor; V, the surface of the floor is polished by a machine; VI, the surface of the floor is coated with an H2O2 solution; VII, the floor is placed in a constant-temperature constant-humidity room for reaction, and balancing is conducted; VIII, the surface of the floor is coated with dustproof paint; IX, infrared drying is conducted on the floor; X, the surface of the floor is polished by the machine; XI, the surface of the floor is subjected to paint UV coating. Proper chemical reagents are selected to react with the tannin component in oak wood, surface color changing treatment is conducted on oak solid wood floor products, the formed color gradually changes from inside to outside, is more natural and shows the archaistic feeling better, and demands of customers can be met to a larger extent.

The invention relates to a preparation method of a solid electrolyte. The preparation method comprises the steps of preparing a base material; uniformly mixing the base material and an organic solvent, pouring on a stainless steel plate to form a liquid film, and drying to obtain a solid base film; depositing a solution of an ionic conductive material on the two surfaces of the solid base film to form an ionic conductive material layer so as to obtain an initial solid electrolyte; performing heat treatment on the initial solid electrolyte; and exposing the initial solid electrolyte subjected to heat treatment in air to form a pre-passivation layer, carrying out surface chemical reaction by using an inorganic acid solution, and forming a three-dimensional cross-linked LiF-LiCl (CF) modification layer on the end surface, which is away from the solid base film, of the ionic conductive material layer. The invention also relates to a solid-state battery. The solid-state battery comprises the solid-state electrolyte layer prepared by the preparation method.

The invention discloses an In2O3-carbon dot compound based NO2 sensor and a preparation method thereof, and belongs to the technical field of semiconductor metal oxide gas sensors. The sensor consistsof an Al2O3 ceramic tube whose outer surface has two annular gold electrodes discrete with each other, and an In2O3-carbon dot compound sensitive material thin film which is uniformly coated on the outer surfaces of the annular gold electrodes and Al2O3 ceramic tube. Through the utilization of the gas adsorption capabilities and shielding effects of carbon dots and a synergistic effect between the carbon dots and In2O3, the surface chemical reaction of detected gas can be increased, and charge transfer between the In2O3 and the carbon dots can be formed, and therefore, the sensitive characteristics of the sensor on NO2 can be effectively improved, and the response of the sense can be enhanced by 5 times; and the sensor has excellent effects of being simple in device process, small in sizeand suitable for mass production.

The invention discloses a scanning chemical reaction microscopic imaging method and application, and belongs to the technical field of material testing instruments. The micro-area sampling of chemical reaction species on the surface of a sample is carried out by utilizing a hollow nano-probe capable of accurately scanning and positioning, and the micro-imaging research on the chemical reaction performance of the solid surface is realized by combining the accurate transfer and high-sensitivity mass spectrum detection analysis of the sampled species. The system comprises a precise positioning and scanning function of the hollow nanoprobe, a micro-area sampling function of the hollow nanoprobe, a precise transfer function of micro-area sampling, an ionization function of efficient and high-selectivity sampling species, a high-sensitivity and high-resolution ion analysis and detection function and a sample surface environment and reaction atmosphere control function. The method is a method for spatially distinguishing and detecting distribution of surface chemical reaction species including atoms, molecules, free radicals and the like on the surface in X, Y and Z dimensions, and a microscopic imaging function with surface or interface chemical reaction performance distinguished by hundreds of nanometers to dozens of nanometers is achieved.

The invention provides a preparation method for preparing a bionic intelligent metal material surface through 3D printing. The method comprises the following steps of: S1, preparing metal surfaces with different micro-morphologies by a 3D metal laser sintering technology; and S2, the metal surfaces with different micro-morphologies are processed by a surface chemical reaction treatment technologyto obtain the metal functional surfaces with different surface chemical compositions and surface roughness. The metal functional surfaces are prepared by the 3D metal laser sintering technology and the surface chemical reaction treatment technology together, so that the metal surfaces with different surface chemical compositions, surface roughness and surface geometric appearances are obtained. Inaddition, the chemical compositions, the surface roughness and the surface geometric appearances of the metal surfaces are continuously and monotonously changed, and the surface contact angles are ingradient change within the range of 150 degrees +/-15 degrees - 10 degrees +/-5 degrees.

The invention discloses a surface treatment process for solid wood floor. The surface treatment process comprises the following steps: I, coating a tannic acid solution on the surface of a plain panel; II, carrying out infrared drying on the floor; III, coating a ferric trichloride solution on the surface of the floor; IV, performing surface chemical reaction on the floor to balance; V, coating dust paint on the surface of the floor; VI, carrying out infrared drying on the floor and carrying out mechanical polishing on the surface of the floor; VII, coating the surface of the floor with a H2O2 solution; VIII, reacting and balancing the floor; IX, mechanically polishing the surface of the floor; and X, carrying out paint UV coating on the surface of the floor. According to the surface treatment process disclosed by the invention, a proper chemical reagent and a proper wood internal tannic acid component are selected to react with the surface coating tannic acid component, so that surface color-changing treatment is carried out on a solid floor product, and formed color is more natural from inside to outside, an archaistic age feeling is reflected better, and demands of consumers can be met to a greater extent.

The invention discloses a floor surface machining technology. The floor surface machining technology comprises the following steps that firstly, an oak type plain floor is coated with a ferric trichloride solution; secondly, the surface chemical reaction is conducted on the floor, and balancing is conducted; thirdly, the surface of the floor is coated through an H2O2 solution; fourthly, the floor is subjected to the reaction, and balancing is conducted; fifthly, the surface of the floor is coated with dust paint; sixthly, the floor is subjected to infrared drying; seventhly, machine polishing is conducted on the surface of the floor; eighthly, the surface of the floor is coated with the H2O2 solution; ninthly, the reaction and balancing are conducted; and tenthly, the surface of the floor is subjected to paint UV coating. According to the floor surface machining technology, the proper chemical reagent is selected to react with the tannin component in the oak wood, the surface color changing treatment is conducted on the oak type solid wood floor product, the formed color appears from interior to exterior and is more natural, the archaistic time feeling is better presented, and the requirements of customers can be met to a greater degree.