92 results about "Ion" patented technology

The invention belongs to the field of biochar adsorbing materials, and relates to a method for preparing modified biochar with aquatic plant waste and hematite. The method includes the following steps: (1) naturally drying aquatic plants prior to crushing to obtain aquatic plant powder; (2) crushing the hematite to obtain hematite powder; (3) weighing the hematite powder prior to putting the hematite powder into deionized water, and performing ultrasonic treatment to obtain suspension; (4) weighing the aquatic plant powder, soaking the aquatic plant powder in the suspension, and stirring and drying to obtain fully mixed aquatic plant and hematite mixture; (5) weighing the fully mixed aquatic plant and hematite mixture, putting the mixture in a batch-type atmosphere furnace, and feeding nitrogen into the furnace; performing temperature programming to the target temperature, and maintaining final-temperature pyrolysis; after the pyrolysis process is finished, obtaining the target product, namely the modified biochar. The modified biochar has strong adsorbability in nitrate and phosphate, high in stability and reusable.

The invention discloses a material ion transmission mechanism research method based on an electronic holography and integral differential phase contrast technology. The method aims at solving the key problem that a traditional characterization means is difficult to directly associate material defects with a local electric field at the same time of an atomic scale. The method comprises the following steps: preparing a transmission electron microscope film sample containing a specific defect structure and applying a tiny bias voltage; obtaining two-dimensional potential and electric field distribution in the sample by using an off-axis electronic holographic technology; obtaining an atomic structure image capable of distinguishing light elements in the same region by using an integral differential phase contrast technology; and finally, carrying out accurate space alignment and correlation analysis on the information of the specific atom defect and the local electric field so as to directly reveal the coupling relationship between the specific atom defect and the local electric field and the influence mechanism of the specific atom defect on ion transmission. The method disclosed by the invention is particularly suitable for illuminating the ion transmission behavior at the shear surface in the Wadsleep-Roth phase niobium-based fast-charging negative electrode material, and has the beneficial effects of high mechanism analysis depth, strong technical complementarity, guiding significance to material design, good method universality and the like.

The invention discloses application of a dual-emission Eu < 3 + > and Cd-MOF material in detection of polluting anions. Experimental results show that the material has an obvious fluorescence quenching effect on CrO4 < 2-> and Cr2O7 < 2->. When the amount of the added CrO4 < 2-> is 2.0 [mu] mol, the fluorescence intensity of the Eu < 3 + > Cd-MOF is quenched to 93.15% (500 nm) and 94.51% (620 nm); similarly, when the addition amount of Cr2O7 < 2-> is 2.0 umol, the fluorescence intensity of the fluorescent powder is quenched to 86.25% (500 nm) and 83.31% (620 nm). Therefore, the dual-emission Eu < 3 + > and Cd-MOF can selectively identify CrO4 < 2-> and Cr2O7 < 2-> ions, and has the advantages of rapidness, simplicity, convenience, sensitivity, accuracy and the like.

A method for distinguishing metal ions Cu 2+ and Mn 2+ This method utilizes a pH clock reaction system of "urease-CO(NH2)2-H2SO4" as the distinguishing solution, based on the Cu of the sample to be distinguished. 2+ and Mn 2+ The reactions between Cu and the products of urea hydrolysis catalyzed by urease differ, resulting in different patterns produced by the pH clock system, thus enabling the determination of Cu... 2+ and Mn 2+ Qualitative analysis of Cu involved in this invention. 2+ and Mn 2+ The qualitative analysis method is characterized by high accuracy, ease of operation, and convenience.

A method for analyzing a sample using an electron microscope includes: generating ions, molecules, or other particles, such as droplets, from a target sample; introducing the ions, molecules, or other particles into a vacuum cavity of a transmission electron microscope (TEM) in a direction intersecting the path of a pulsed electron beam; recording an electron diffraction pattern associated with the ions through which the pulse passes at each pulse of the electron beam; and calculating the three-dimensional (3D) structure of the ion species based on the recorded electron diffraction pattern.

The invention discloses a water-producing gas well formation water distinguishing method, device and equipment and a medium, and relates to the technical field of formation water distinguishing. The method comprises the following steps: acquiring a chromatogram of output filtrate, determining an ion determination result according to the chromatogram, and generating a relation curve graph of a sampling date and the ion content in the ion determination result according to an anion determination result and a cation determination result; determining the gas well producing area layer water according to the relation curve graph of the sampling date and the ion content in the ion measurement result; and judging the water type of the formation water according to the affinity between anions and cations in the ion measurement result. And meanwhile, the formation water production reservoir is judged, so that the accuracy of distinguishing the formation water of the water production gas well and the applicability of distinguishing the formation water can be improved.

The molecular adsorbent according to the present application adsorbs a polar molecule, and contains, as an active ingredient, an ion exchanger having: an ion exchange resin containing an ion exchange group which is a strongly acidic group; and a metal ion or a complex of a metal ion which is ion-exchanged with the ion exchange group. The polar molecule contains a nitrogen atom having a lone pair of electrons. The metal ion is one or more of a metal ion of 3 valence or more, Co 2+ , Cu 2+ , Ni 2+ , Mn 2+ , V 2+ , Cs + , Rb + , and K + .

The invention belongs to the technical field of ion measurement, and particularly relates to a method for measuring ions with different sizes, which comprises the following specific steps: S1, sample pretreatment: performing ultrasonic treatment on a sample solution, centrifuging the sample solution, and filtering the sample solution; s2, field flow separation: firstly setting a field flow separator, and then primarily separating ions in the sample solution according to the size by using the field flow separator; s3, verifying the separation effect: firstly collecting part of the separated sample solution flowing out, then preliminarily verifying the size distribution condition of the separated ions, then comparing the obtained result with the expected separation effect, and if the separation effect is found to be poor, carrying out separation again until the satisfactory separation effect is achieved. By adopting the field flow separation technology, measurement errors caused by insufficient separation can be avoided, and the measurement accuracy is greatly improved.

The disclosure extends to multiple ion nanoparticles for delivery of agricultural products and ions. A composition includes a structural particle and a plurality of ions disposed around the structural particle. The plurality of ions forms a plurality of ion layers surrounding the structural particle. The plurality of ions comprises a plurality of a first ion having a positive charge and a plurality of a second ion having a negative charge.

A process for preparing a Mn+4 doped phosphor of formula I Ax[MFy]:Mn+4 I includes combining a first solution comprising a source of A and a second solution comprising H2MF6 in the presence of a source of Mn, to form the Mn+4 doped phosphor; wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7; and wherein a value of a Hammett acidity function of the first solution is at least −0.9. Particles produced by the process may have a particle size distribution with a D50 particle size of less than 10 μm.

The invention belongs to the field of X-ray long-afterglow luminescent materials. The technical problems that traditional Pr < 3 + > doped fluoride is insufficient in afterglow performance, X-ray imaging depends on continuous irradiation, and color scattering noisy points exist are solved. The NaLuF4: Mg / Cs / Pr fluoride material is prepared by adopting a Cs < + >-Mg < 2 + > co-doping regulation strategy, the material is synthesized by an oleic acid-octadecene liquid phase method, and the X-ray excitation afterglow intensity of Pr < 3 + > is improved by about 110 times by utilizing the synergistic effect that Cs < + > enhances X-ray absorption and Mg < 2 + > optimizes a carrier shallow-deep trap level; the material is prepared into the high-light-transmittance rare earth nano flexible scintillation screen with the resolution ratio of 20.01 lp / mm. According to the invention, zero-noisy-point time-delay imaging after low-dose X-ray transient irradiation is realized, continuous irradiation is not needed, the radiation dose is lower, and the method is mainly applied to the field of X-ray time-delay imaging of low-dose medical diagnosis and industrial nondestructive testing. The method does not need continuous X-ray irradiation, and has important application value in the fields of medical diagnosis, industrial nondestructive testing and the like.

The present disclosure provides methods for determining concentration of various trace metal ions in aqueous solutions, such as gold plating solutions. At a particular fixed reduction potential, the cathodic current can suddenly increase in magnitude after a certain period of time (e.g., an incubation time) passes in the presence of a trace metal ion (e.g., Tl(I)), where the incubation time is inversely proportional to the concentration of trace metal in the electrolyte. The concentration of the trace metal can be calculated after measuring the incubation time and comparing it against a calibration curve.

A method of operating an instrument which comprises a first and second ion stores, comprising determining whether a target accumulation time for the second ion store is greater than a threshold accumulation time. When the target accumulation time is less than the threshold accumulation time, ions are accumulated within the second ion store using an accumulation time that is based on the target accumulation time. When the target accumulation time is greater than the threshold accumulation time, ions are accumulated within the first ion store using a first accumulation time, the ions accumulated in the first ion store are passed to the second ion store, and further ions are accumulated within the second ion store using a second accumulation time.

A method for determining mass defect diagrams with user-defined mass scaling, filtering, and labeling in a mass spectrometer is described. One implementation of the method includes: (i) generating a mass defect diagram from the data, (ii) filtering out all ions in the mass defect diagram that do not have an assigned isotopic ion, (iii) selecting an unidentified ion, (iv) determining an isotopic pattern for the unidentified ion, (v) identifying one or more elements indicated by the isotopic pattern for the unidentified ion, (vi) searching for formulas containing one or more elements indicated by the isotopic pattern for the unidentified ion, (vii) determining a chemical formula for the identified ion, and (viii) displaying a chemical formula for the unidentified ion.

The invention provides a method for enhancing second harmonic emission based on a nonlinear energy transfer mechanism, which comprises the following steps of: obtaining a heterojunction formed by a donor two-dimensional material A and an acceptor two-dimensional material B, and then exciting and inducing nonlinear energy transfer through a two-photon pump light source, thereby enhancing the second harmonic emission of the acceptor two-dimensional material B; in the heterojunction, the donor two-dimensional material A is (LA) 2 (A) n-1PbnI3n + 1; wherein LA is an alkyl ammonium ion or a phenylammonium ion of C3-C6; a is an alkyl ammonium ion of C1 to C2 or a formamide ion of C1 to C2; n is 1 to 4; and the receptor two-dimensional material B comprises at least one of MoS2, MoSe2, WSe2 and h-BN. According to the scheme, the SHG of the acceptor material can be effectively enhanced.

The application discloses a large-area transparent Sb-based and doped perovskite scintillator material and a preparation method and application thereof. The perovskite scintillator has a general formula of (R-C 18 H 15 P)2Sb y M 1‑y X5, wherein R is selected from one or more of -CH3, -CH2Cl, -CH2CH3, -CH2OCH3, -(CH2)3CH3, -CH2C6H4CH3 and -C6H5; M is a metal ion selected from B-site doping ions; X is selected from one or more of Cl ‑ , Br ‑ and I ‑ ; and y is selected from 0-1 and is not 0. The perovskite scintillator material has the advantages of high quantum yield and large X-ray absorption coefficient, and in the structure, a large-area transparent Sb-based perovskite with controllable shape is obtained for the first time, and can be applied to the field of ray detection to obtain highly clear ray imaging.

A method for controlling an ion detector is provided. The method includes converting a received ion into emitted electrons, multiplying the emitted electrons, detecting the multiplied electrons, generating a detection signal in response, and determining the ion intensity from the detection signal.

The invention discloses a novel nanogold sensing method for continuously detecting various heavy metals by fluorescence'on-off-on 'based on a gradual detection strategy. Gold nanoclusters (GSH-AuNCs) taking glutathione (GSH) as a reducing agent and a stabilizing agent respond to various heavy metals to cause fluorescence quenching, and a novel GSH-AuNCs visual sensing platform is designed according to the remarkable difference of fluorescence intensity before and after coordination / redox competition, so that four heavy metal ions of Fe (III), Cu (II), Hg (II) and Cr (VI) are successfully and rapidly detected step by step. The method is simple in operation steps, high in detection speed (Fe (III): 3 min, Cu (II): 30 s, Hg (II): 3 min and Cr (VI): 3 min), wide in quantitative range (0.1-200 [mu] M), high in sensitivity (LDDFe (III): 87 nM, LODCu (II): 36 nM, LODHg (II): 32 nM and LODCr (VI): 75 nM) and high in anti-interference capability, and is successfully applied to gradual detection of four heavy metals in actual water and biological fluid (urine and serum).

A method for distinguishing metal ions Fe 2+ and Ni 2+ , the method applies a "urease-CO(NH2)2-H2SO4" pH clock reaction system as a distinguishing solution, according to the different induction time generated by metal ions Fe 2+ and Ni 2+ in the pH clock system, so as to realize the qualitative analysis of Fe 2+ and Ni 2+ . The qualitative analysis method of Fe 2+ and Ni 2+ involved in the present application has the characteristics of high accuracy, easy operation and convenience.

The invention discloses a Ti3C2Tx-S / SPCE sensing electrode and a method for simultaneously detecting Cd < 2 + >, Pb < 2 + >, Cu < 2 + > and Hg < 2 + >. The electrode is mainly prepared by loading Ti3C2Tx-S on a screen-printed electrode (SPCE), and the Ti3C2Tx-S is prepared by carrying out one-pot etching and in-situ cation auxiliary intercalation on Ti3AlC2 MXene, according to the method, the lattice spacing and the specific surface area of the Ti3C2Tx-S material are increased, and more active sites are exposed; the detection limits for simultaneously detecting the heavy metals Cd < 2 + >, Pb < 2 + >, Cu < 2 + > and Hg < 2 + > are 3.1 nmol / L, 3.6 nmol / L, 5.2 nmol / L and 3.7 nmol / L in sequence; ti < 3 > C < 2 > T < x-S > shows good anti-interference performance, stability and repeatability; the electrochemical performance of Ti3C2Tx-MXene is improved by adopting a cation in-situ intercalation strategy, and the detection sensitivity of heavy metal ions such as Cd < 2 + >, Pb < 2 + >, Cu < 2 + > and Hg < 2 + > is improved.

The application provides a medium / high-entropy metal organic framework material and a preparation method thereof, wherein the configuration entropy (Delta S) of the medium-entropy metal organic framework material satisfies 1R < Delta S < 1.5R, the configuration entropy (Delta S) of the high-entropy metal organic framework material satisfies Delta S > 1.5R, R is a gas constant and is 8.314; the metal ions in the medium / high-entropy metal organic framework material are at least four kinds of magnesium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, ruthenium, palladium, silver, cadmium, indium, tin, iridium, rhodium and platinum, the molar amount of each kind of metal ion is 10% to 70% of the total molar amount of the metal ions, and the ratio of the total molar amount of the metal ions to the molar amount of the organic ligand is 1:2 to 8. The preparation method has the characteristics of programmable and controllable, the metal types can be adjusted to four or more, and the metal proportion changes less than 5% before and after preparation. The medium / high-entropy metal organic framework material has the characteristics of uniform distribution of metal elements, accurate modulation, replaceable organic ligand, and can accurately control the metal types and proportion in the medium / high-entropy MOFs, and the structure and performance of the obtained sample.

1. The name of this design product: Negative ion generator (X98). 2. Purpose of this product design: used to generate high-concentration negative ions and purify the air. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: Design 1 3D drawing. 5. The bottom surface of the product with this design is a part that is not easy to see or cannot be seen when in use, so the top view of Design 1 is omitted; the bottom surface of the product with this design is a part that is not easy to see or cannot be seen when in use, so the top view of Design 2 is omitted. 6. Designate Design 1 as the base design.

This invention provides an application of iron(III) oxide quantum dots in the analysis of Cr(VI) / Cr(III) speciation and the photocatalytic reduction of Cr(VI) to Cr(III), belonging to the field of heavy metal detection technology. This invention synthesizes iron(III) oxide quantum dots using iron(III) oxide nanoparticles. The fluorescence intensity of these iron(III) oxide quantum dots is enhanced in the presence of o-phenylenediamine, and further enhanced in the presence of Cr(VI), without interference from other metal ions. Therefore, the fluorescent probe composed of iron(III) oxide quantum dots and o-phenylenediamine can be used to detect the Cr(VI) content in samples and analyze the speciation of Cr(VI) / Cr(III), with a Cr(VI) detection limit of 2.44 μg / L. Simultaneously, these iron(III) oxide quantum dots possess nanozyme activity, capable of catalytically reducing Cr(VI) to Cr(III) under visible light conditions, with over 99% of Cr(VI) being degraded within 2 hours.

First, MS scans of a quality range of a control sample that does not include metabolites are performed (601), resulting in background peak m / z and intensity values of background precursor ions (602). Background peaks are selected for an exclusion list and the m / z and intensity values of each background peak are included in the exclusion list (604). Next, MS scans of a quality range of an experimental sample that includes metabolites are performed (610), resulting in peak m / z and intensity values of precursor ions (612). Peaks are selected for a peak list and the m / z and intensity values of each peak are included in the peak list (614). Finally, each peak in the peak list having m / z and intensity values corresponding to the m / z and intensity values of the background peaks of the exclusion list are excluded from the peak list (616).

The invention discloses a metal ion modified multicolor organic ionic scintillator and a preparation method and application thereof, the metal ion modified multicolor organic ionic scintillator comprises an organic compound skeleton and metal ions, and the organic compound skeleton has the following structure. According to the material, metal ions and chromophores with different conjugate lengths are introduced to a parent nucleus structure for modification, the absorptivity of high-energy rays and the utilization rate of triplet excitons are improved, and compared with an existing scintillator, the whole ion system is a multicolor ion type scintillator molecule. Different molecular accumulation modes influence delta EST, so that the system shows excellent photophysical properties, and the molecule with the most excellent performance shows the service life of 33us and the quantum efficiency of 43%, also shows excellent X-ray radiation luminescence performance, and has wide application in the fields of imaging, safety detection and the like.

Aspects of the present disclosure may include a method and / or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.

A detector (1, 1A, 1B, 1C, 1D) comprises a sensor accommodation part (3), a sample introduction part (2), a movement passage (7), and a change material supply part (11, 11A). The sensor accommodation part accommodates a sensor for measuring ions. A sample is introduced into the sample introduction part. The movement passage connects the sample introduction part and the sensor accommodation part and supplies the sample to the sensor accommodation part. The change material supply part supplies an ion concentration change material (C) that changes the ion concentration of the sample to the sensor accommodation part.

1. Name of the product in this design: Negative Ion Generator. 2. Purpose of this design: To generate negative ions and purify the air. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application belongs to the technical field of electrochemical analysis and test, and discloses a chlorine ion probe calibration method based on selective coefficient correction. The method calibrates the main standard under the same ion intensity and temperature conditions as the sample, measures the selective coefficient of Br⁻ and I⁻, uses the extended potential-activity relationship to analyze and correct the interference, and obtains the accurate chlorine ion activity / concentration. The application is suitable for seawater, brine and other complex media, and significantly improves the accuracy, repeatability and traceability of measurement.

Aspects of the present disclosure may include a method and / or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.