28 results about "Wet chemistry" patented technology

The invention provides a Fe-Co-Ni series nano-alloy and a preparation method and application thereof, and belongs to the technical field of functional materials. The alloy is prepared by the following steps of: weighing and proportioning 0.5 mmol of each element by taking chlorate or acetylacetonate or acetate of iron, cobalt, nickel, manganese, copper, zinc and the like with the purity of more than 99.5% and other metal chlorides which are rich in earth surface and economical and practical as precursors, putting the precursors into a pressure-resistant bottle, taking n-trioctylphosphine oxide (TOPO) as a ligand, taking ethanol and 1-octadecene (ODE) as a mixed solvent, and uniformly stirring to prepare the alloy. And synthesizing the hexagonal nano-alloy at low temperature by using a wet chemical method. The method can be used for synthesizing 3-10-element medium-entropy and high-entropy alloy, and has a wide application prospect. The synthesis is a precise process which is guided by an organic ligand, is coordinated by multiple metals and is subjected to nucleation-self-assembly-anisotropic growth.

An apparatus for non-immersive wet-chemical treatment of a surface of a workpiece (2) comprises: a holding device (7) for holding the workpiece (2) with the surface in a predominantly upright orientation; a liquid application system (5) for flowing liquid (6) across the surface of the workpiece (2), when held by the holding device (7), as a film flowing in a predominantly downwards direction; a receptacle (4) for collecting liquid (9) that has flowed across and detached itself from the surface; and a system (11,12,16,18-20,22,24) for recirculating liquid collected in the receptacle (4) to the liquid application system (5). The system (11,12,16,18-20,22,24) for recirculating liquid comprises a device (22,23) for introducing sparging gas (21) into the liquid.

The present application provides a ginseng quality nondestructive evaluation method based on hyperspectral and X-ray technology, belongs to the field of spectral analysis technology, and comprises the following steps: collecting information of a complete ginseng sample by using hyperspectral and X-ray technology, and integrating complementary information from the two devices by a modeling method of ensemble learning. The present application provides a fast, nondestructive and accurate ginseng quality evaluation method, and solves the problems of low accuracy of experience identification analysis, complex and time-consuming pretreatment of wet chemical analysis method, and difficulty in adapting to batch rapid detection due to sample crushing treatment of near-infrared spectral analysis technology.

The invention discloses a tungsten-rhenium alloy preparation method for controlling the size of a second phase, and belongs to the technical field of medical CT machine anode target material preparation. W-10wt% Re-x Al2O3 precursor powder is synthesized by adopting a wet chemical method, wherein the content of Al2O3 is realized by regulating and controlling the addition amount of aluminum nitrate pentahydrate in the precursor. And the precursor powder is subjected to reduction treatment through a tubular furnace, and alloy powder is obtained. And then, powder densification is achieved through SPS sintering, and then the overall performance of the block is improved through rolling. According to the method, the influence of the content of the second phase (Al2O3) on the alloy performance and the influence of different processes on the size of the second phase are explored, and the purpose is to determine the optimal content interval so as to meet the strict working condition requirement of the medical CT machine target material. According to the method, an effective way for preparing the high-performance W-10wt% Re alloy by combining SPS and second phase introduction is determined through experiments, and the way has the advantages of process simplification and microscopic structure regulation and control.

The invention relates to the field of materials, and discloses a surface wave-shaped gold nanocrystalline material and a preparation method and application thereof.The preparation method comprises the steps that a chloroauric acid solution A1, a sodium hydroxide solution B1 and a solution C1 containing a first ligand react to obtain a first solution; the first ligand is selected from more than one of nitrite, citrate, sulfite and hypophosphite; a solution 1 containing a second ligand, a solution 2 containing a nanocrystalline template and a reducing agent solution 3 are mixed to obtain a mixed solution 4, the solution I is added into the mixed solution 4 to obtain a solution II, and the second ligand is selected from one or more of polyvinylpyrrolidone and poly (diallyldimethylammonium chloride) heat exchange sodium dodecyl benzene sulfonate; and mediating a mediating agent into the solution II to obtain the gold nanocrystalline material with the wavy surface. According to the method, the gold nanocrystals are synthesized in a water phase at normal temperature and normal pressure by adopting a wet chemical method, the surfaces of the prepared gold nanocrystals are wavy, and the roughness is continuously adjustable.

The invention discloses a simple wet chemical method for growing an ultra-fine platinum ultra-long nanowire in a solution phase. The length of the ultra-fine platinum ultra-long nanowire can be up to about 1 [mu] m. Compared with a traditional synthesis method, the method has the advantages that the operation and experiment conditions are simple, and the length of the platinum nanowire can be regulated and controlled on silica in a solution phase by adjusting the reaction time; meanwhile, the density of the platinum nanowires can be controlled by changing the concentration of the silane coupling agent and different seed dilution multiples, and the platinum nanowires with different surface roughness can be obtained by changing the ligand concentration. Besides, the nanowire can also be directly loaded on a conductive substrate, so that the one-dimensional platinum nanowire can be directly used as a working electrode subsequently, and great application potential is provided for the fields of electro-catalysis and the like. The method is simple in process, mild in reaction condition and low in cost, and the nano material synthesized by the electro-deposition method has the advantages of being accurate and controllable, simple and convenient to operate and environment-friendly.

The invention relates to an optical device configured for measuring fluorescence and absorbance in immunoassays and wet chemistry, comprising:-an illuminator channel (26) comprising at least one excitation source (28),-a detector channel (34) comprising at least one sensor (36),-a cuvette (130) comprising a sample (132) between the illuminator channel (26) and the detector channel (34), -an optical light mixer (38) between the illuminator channel (26) and the cuvette (130) and an optical splitter (40) between the cuvette (130) and the detector channel (34).

This invention discloses a rapid detection method for protein in feed based on wet chemistry. The method includes the following steps: (1) mixing the feed sample with the sample extraction buffer, shaking to extract, centrifuging, and taking the supernatant; (2) adding the working solution of the protein standard and the supernatant to the diquinoline formic acid working solution, incubating, and measuring the absorbance value at a wavelength of 562 nm using an ELISA reader to obtain the absorbance values ​​of the protein standard and the supernatant; plotting a standard curve with the concentration of the protein standard as the abscissa and the absorbance value as the ordinate, and obtaining a linear regression equation; substituting the absorbance value of the supernatant into the linear regression equation to calculate the protein concentration in the supernatant, and then calculating the protein content in the feed sample based on the extraction buffer volume in step (1). This invention achieves a high degree of consistency between the detection results and the Kjeldahl nitrogen determination method, while significantly shortening the detection time of a single sample to less than 1 hour.

This invention provides a TEM sample, its preparation method, and its application. The TEM sample preparation method provided by this invention, without affecting the pore structure of the semiconductor device, first uses reactive ion etching to remove some residual polymer deposits blocking the pore openings on the semiconductor device. This enlarges the pore openings, preventing blockage and facilitating the entry of colloidal materials into the pore structure for filling and the deposition of precursor materials for atomic layer deposition. This enhances the clarity of the pore sidewalls, effectively improving the quality of the TEM sample and the final observation results. Furthermore, the TEM sample preparation method provided by this invention requires less equipment and technical investment, and the operation process is simpler and faster than Fab etching. It also enables batch laboratory-scale sample processing. In addition, compared to wet chemical etching cleaning techniques for removing residual polymers, it avoids problems such as chemical reagent residues at the bottom of deep pore structures and chemical reactant contamination.

The invention relates to the technical field of chlorosilane trace phosphorus detection, in particular to an electronic-grade chlorosilane trace phosphorus online detection method and system based on gas phase enrichment, and the method comprises the following steps: converting a liquid chlorosilane sample into chlorosilane steam flow; carrying out selective enrichment on the chlorosilane steam flow, separating phosphorus impurities from chlorosilane groups by utilizing the property difference between the phosphorus impurities and the chlorosilane groups, and selectively retaining and enriching the phosphorus impurities; desorbing the enriched phosphorus impurities, and sending the phosphorus impurities into an excitation source for excitation to obtain a phosphorus characteristic signal; determining the concentration of phosphorus impurities in the chlorosilane sample based on the phosphorus characteristic signal; the process of gas phase sample introduction, selective adsorption enrichment, rapid thermal desorption and direct excitation detection is adopted, so that the necessary wet chemical treatment links such as sample hydrolysis and digestion in the traditional off-line method are avoided, and exogenous pollution introduction, target phosphorus element volatilization loss and analysis delay caused by the wet chemical treatment links are eliminated; and rapid online monitoring of the chlorosilane in the process pipeline is realized.

The application relates to the technical field of hexagonal MBenes material preparation, in particular to a two-dimensional hexagonal transition metal boride h-MBenes material, a preparation method and application thereof. The molecular formula of the h-MBenes material is Hf x B y T z (T=H, O, F, Cl or OH), the h-MBenes phase material has a hexagonal crystal structure and is formed by alternately stacking transition metal hafnium layers and graphene-like boron layers, and the h-MBenes phase material is easy to be functionalized. The hexagonal ternary layered transition metal boride h-MAB phase material is used as raw material, the hexagonal ternary layered transition metal boride h-MAB phase material is etched by using a wet chemical method or a molten salt method, and a two-dimensional hexagonal transition metal boride h-MBenes material is obtained, the method is simple and effective, the raw material is easy to obtain and low in price, and the method has important industrial application prospects. The application also discloses possible applications of the h-MAB phase for preparing the h-MBenes material, and the results show that the h-MBenes material has good conductivity and excellent electrochemical performance.

The invention discloses a bimetallic plasmon nano gap cavity structure for enhancing up-conversion luminescence and a preparation method and application thereof, and belongs to the technical field of nano photonics, plasmon and luminescent materials. In order to solve the problems that the local electric field enhancement of a single metal particle is weak, the LSPR peak position tuning is narrow, a complex metal array is difficult to prepare, and the microcosmic essence is difficult to reveal by an averaging effect brought by macroscopic ensemble research, a metal-insulator-metal sandwich structure is constructed and comprises a substrate, a silver micron sheet, up-conversion nanoparticles and a gold nano bipyramid from bottom to top; by flexibly tuning spectral resonance, excitation absorption and radiation attenuation dual-mode enhancement can be selectively realized for a specific light-emitting channel. The structure can be prepared through a wet chemical method and a self-assembly process, has the advantages of being simple and convenient in preparation method, high in repeatability, good in structural consistency and the like, can be used for researching a horizontal mechanism of a single nanocavity, and has application potential in the fields of biological imaging, optical anti-counterfeiting, micro-nano photonic devices and the like.

The application discloses a kind of quick detection method and system of impurity-containing platinum rhodium alloy composition content, belong to precious metal component detection technical field.It includes: obtaining the platinum rhodium alloy sample to be detected, using gas specific gravity bottle method to carry out density detection to sample, using spectrometer to carry out component detection to sample, obtain the impurity element content in sample, by calculating and comparing the rhodium amount of output sample.The rhodium amount in platinum rhodium alloy is measured by the way of combining spectral analysis and gas specific gravity bottle method density detection, the detection time of ICP or wet chemical method is reduced from several hours to several days to within 1 hour, greatly improve efficiency, reduce detection loss and cost at the same time.The method has very high precision and can effectively exclude the interference of impurities and defects on measurement results.

The invention provides a molecule-based two-dimensional room-temperature ferromagnet, a preparation method thereof and an electronic device comprising the molecule-based two-dimensional room-temperature ferromagnet. The preparation method of the molecule-based two-dimensional room-temperature ferromagnet comprises the following steps: carrying out intercalation treatment by taking cobaltocene as an intercalation object and a layered material as an intercalation subject. Under the wet chemical reaction condition, the layered material serves as an intercalation subject, cobaltocene serves as an intercalation object, magnetic cobaltocene molecules are inserted into Van der Waals interlayer space of the layered material, the molecules can be subjected to confinement assembly, and therefore the two-dimensional room-temperature ferromagnet originating in molecular magnetism is obtained. The method provided by the invention is simple in condition process, high in yield, intact in structure preservation, excellent in performance and good in atmospheric stability, and is suitable for ferromagnetic functionalization of small molecules and application fields of the small molecules in electronic devices, optoelectronic devices, spintronics devices and the like. Experimental results show that in the material provided by the invention, cobaltocene molecules can be assembled in order in a two-dimensional Van der Waals confinement space, and the material has room-temperature ferromagnetism.

The application provides a preparation method and application of a spatial type surface enhanced Raman probe, and belongs to the technical field of preparation of the surface enhanced Raman probe. The hot spot of the probe takes a dielectric material-metal combination as a core, takes cetyltrimethylammonium bromide (CTAB) as a hard template on the surface of the core, synthesizes a mesoporous silica layer through one-pot wet chemical method, realizes a double-layer spatial type structure by chemical plating of metal particles on the surface again, the number of layers of the structure can be adjusted, the preparation of a more efficient 'hot spot' is realized, and the prepared enhanced Raman probe can be used for trace detection of cannabinoids.

Method for the production of an organic light-emitting device (100) comprising the steps: A) Providing a substrate (1), B) Applying a first electrode (2) to the substrate (1), C) Application of at least one organic functional layer stack (5) designed to emit radiation and arranged at least above the first electrode (2), D) Applying a second electrode (6) over the organic functional layer stack (5), and E) Application of perhydropolysilazane (4) by wet chemical processes and curing of perhydropolysilazane (4) to produce at least one planarization layer (3) arranged between the first electrode (2) and the substrate (1), wherein a layer structure with at least one layer pair (10) is produced, wherein each layer pair (10) is formed from the planarization layer (3) and a layer (9) produced by atomic layer deposition or chemical vapor deposition, wherein the layer (9) produced by atomic layer deposition or chemical vapor deposition completely surrounds both the surface and the side faces of the planarization layer (3), wherein at least one layer pair (10) is followed by a further planarization layer (31), wherein the further planarization layer (31) surrounds both the side faces and the surfaces of the layer (9) produced by atomic layer deposition or chemical vapor deposition in a form-fitting and material-bonded manner, and wherein the first electrode (2) and metallizations (8) are arranged above the planarization layer (3).

The invention discloses a high-entropy MXene material, a preparation method and application in an SERS (Surface Enhanced Raman Scattering) substrate, and relates to the technical field of functional materials. The method comprises the following steps: adding high-entropy MAX phase raw material powder into a mixed solution containing LiF and HCl, carrying out chemical etching, and centrifuging to obtain a precipitate; repeatedly washing the precipitate until the pH value of the supernatant is 6-7, dispersing the precipitate in deionized water, and carrying out ultrasonic treatment to obtain a high-entropy MXene solution; and centrifuging the high-entropy MXene solution, and collecting an upper-layer solution to obtain a single-layer high-entropy MXene colloidal solution which is used as the high-entropy MXene material. According to the preparation method, a mild wet chemical etching process is adopted to prepare a high-yield single-layer high-entropy MXene colloidal solution, and the high-yield single-layer high-entropy MXene colloidal solution is dispensed on the glass substrate, so that a solution is provided for constructing a stable and sensitive MXene-based SERS substrate.

The invention provides a preparation method of a symmetric broken gold nanocrystal with a controllable length-diameter ratio based on microwave-assisted ultrafast synthesis. According to the method, under the synergistic effect of a surfactant and a pre-synthesized gold seed, reaction conditions are accurately controlled through key parameters such as microwave radiation temperature, power and reaction time of a microwave reactor, and after the reaction is completed, the gold nanocrystal with good monodispersity and adjustable length-diameter ratio can be obtained through centrifugal purification. Compared with a traditional wet chemical synthesis process, the method has the advantages that the reaction time is greatly shortened to be within 1 hour; by utilizing the characteristics of instantaneity and uniformity of microwave heating, the high uniformity of the nanocrystal size is realized; by regulating and controlling the type and the concentration of the surface active agent, the regulation and control of the symmetrical broken morphology of the gold nanocrystal can be realized; the length-diameter ratio of the gold nanocrystals can be directly controlled by accurately regulating and controlling the microwave temperature, the method is easy to operate and good in repeatability, and a novel efficient and controllable preparation way is provided for application of functional precious metal nanomaterials.

This document describes wet chemical etching systems designed to apply etching chemistry to a substrate's surface. The system, in some examples, includes a rotor that grips and rotates the substrate, in conjunction with a weir that forms a crest of wet chemistry beneath it. As the substrate rotates, surface tension draws the wet chemistry onto its surface. The system may also include a controller that manages the substrate's movement through different positions.

The invention provides a preparation method and application of a spatial surface-enhanced Raman probe, and belongs to the technical field of preparation of surface-enhanced Raman probes. A hot spot of the probe takes a dielectric material-metal combination as an inner core, cetyltrimethylammonium bromide (CTAB) is taken as a hard template on the surface, a mesoporous silica layer is synthesized by a one-pot wet chemical method, metal particles are chemically plated on the surface again to realize a double-layer spatial structure, the number of layers of the structure can be adjusted, and the preparation of the hot spot with higher efficiency is realized. The enhanced Raman probe prepared by the invention can be used for trace detection of synthetic cannabinoid.

The present disclosure provides methods and systems for generating Near Infrared Spectroscopy (NIRS) calibration models to accurately measure the amount of traits of interest in plant samples. The methods and systems reduce the requirement for wet chemistry analysis when compared to traditional approaches.

The present invention relates to a method and an apparatus for measuring the thickness d of a transparent layer (10), and in particular to a method and an apparatus for measuring the thickness d of glass plates during wet-chemical glass thinning in the manufacturing process.The method for measuring the thickness d of a transparent layer (10) includes: determining an approximate thickness dFFT based on a precisely known dispersion n(1) of the material of the layer (10) by performing Fast Fourier Transformation, FFT, analysis on Fabry-Pérot oscillation, FPO, from the layer (10) in a spectral reflectance measurement (900); and performing a FPO full-spectral fitting procedure (910-0) with the approximated thickness dFFT as starting value d0,0 to determine an initial local best fitting thickness dFPO,0. After the initial local best fitting thickness dFPO,0 has been found, the FPO full-spectral fitting procedure (910-i) may be repeated with specific alternative starting values d0,i to determine a global best fitting thickness dFPO.

A device (100) comprises a process chamber (101) for the wet-chemical processing of a substrate (103) located in the process chamber (101) with a process liquid (105) and at least one two-component spray nozzle (104) operated with a pressurized gas for spraying the process liquid (105) onto the substrate, which is arranged in the process chamber (101). In particular, it comprises a compressor (108) which is configured to draw in a process atmosphere (107) from the process chamber (101), compress it, and return it as a pressurized gas to the at least one two-component spray nozzle (104).

Systems and methods of automating analytical wet chemistry using a series of automated devices and controllers that eliminates the need for human intervention or control are herein disclosed. The embodiments disclosed herein can collect a sample, determine the individual concentrations of one or more molecules or ions in a fluid, either liquid or gas, and then digitally store the results of the analysis to be accessed later or digitally communicated to one or more output devices, a digitally controlled device or controller. The system may be controlled by one or more computer(s), server(s), controller(s), or microcontroller(s). The systems and methods can be applied to determine the concentration of any chemical in any fluid, and then use that information to autonomously control the concentration of the fluid by adding chemicals to the body of fluid.

A device for holding at least one planar substrate (1,2) in an apparatus for non-immersive wet-chemical treatment of the substrate (1,2) comprises a pair of flow guide surfaces (23,24;50,51;88,89) on opposite sides of a space (28;55;93) for accommodating an edge region of at least one substrate (1). The flow guide surfaces (23,24;50,51;88,89) extend in a first direction (-z) to respective edges (25,26;52,53;90,91) and extend in a second direction (y) transverse to the first direction (-z). Each of the edges (25,26;52,53;90,91) bounds a gap (27;54;92) for insertion of an edge region of at least one substrate (1) into the space (28;55;93). A dimension of the space (28;55;93) in a third direction (x) transverse to the first and second directions (-z,y) decreases in the first direction (-z) over at least part of an extent in the first direction (-z) of the space (28;55;93). The device comprises at least one first array (15;44;76) of protruding engagement features and at least one second array (16;45;77) of protruding engagement features, protruding towards each other from first and second engagement feature supports (19;20;47;49;81;84), respectively. The first and second arrays (15,16;44,45;76,77) extend in the second direction (y). The engagement feature supports (19;20;47;49;81;84) are at least partially movable with respect to each other to move the first and second arrays (15,16;44,45;76,77) in the third direction (x). The protruding engagement features are located in the space (28;55;93) at a distance from the edges (25,26;52,53;90,91) in opposite direction (z) to the first direction (-z). The space (28;55;93) is accessible to liquid at a distance from the edges (25,26;52,53;90,91) in opposite direction (z) to the first direction (-z).

Method for producing a solid electrolyte with a multilayer structure, especially for a solid oxide fuel cell, comprising the steps: a) Providing a support layer (10) made of a porous material; b) Application of two or more layers (21, 22, 23) of an ion-conducting material by wet chemical deposition and subsequent thermal treatment at a temperature below 1000 °C, wherein the temperature of the thermal treatment decreases from the first layer (21) to the last layer (22; 23), and wherein the mean size of the applied particles decreases from the first layer (21) to the last layer (22; 23); c) Deposition of one or more non-porous layers (30; 31, 32) of an ion-conducting material by vapor deposition at a temperature below 1000 °C.

An apparatus for holding a planar substrate (2) in an apparatus for non-immersion wet chemical treatment of the substrate (2) comprises: a support structure (4) comprising at least one portion (5a, 5b, 6) for engaging a support in order to hold the support structure (4) in the apparatus; and at least one clamping device (10) supported by the support structure (4) for holding the substrate (2) in the plane (3). The at least one clamping device (10) comprises at least one series of laterally advanced projections (12a to 12s) for engaging a major surface of the substrate (2) at the proximal end of an upper edge of the substrate (2) located in the plane (3). The device further comprises: at least one inner diversion portion (21) having an outwardly facing surface facing outwardly with respect to the plane (3) and comprising a wettable surface section (25), the wettable surface section (25) being wettable by directing a flow of liquid onto the wettable surface section (25); and at least one outer diversion portion (23) having an inward facing surface, where the inward facing surface faces inward with respect to the plane (3) and comprises an inclined surface section (35). The inwardly facing surface of the outer diversion portion (23) is spaced apart from the outwardly facing surface of the inner diversion portion (21) such that liquid directed onto the wettable surface section (25) can flow onto at least the inclined section (35) of the inwardly facing surface of the outer diversion portion (23). An edge (29) of the inner diversion portion (21) extends proximal to the series of projections (12a to 12s) and at least predominantly in a lateral direction, seen from view towards the plane (3), the edge (29) being located between the series of projections (12a to 12s) and the wettable surface section (25), and the inclined section (35) of the inwardly facing surface of the portion of the outer flow guide (23) is inclined towards the plane (3) in a direction (-z) transverse to the lateral direction (x) and towards the series of projections (12a to 12s).