77 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.

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 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.

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.

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.

The present application relates to the field of high-end equipment manufacturing fusion nuclear energy material hardness detection, and discloses a kind of nanohardness evaluation method of fusion energy material, comprising: obtaining the nanoin dentation test data of material to be measured after no irradiation and ion irradiation;Radiation induced defect density distribution model is constructed, wherein x is material depth;Based on the distribution model and dislocation hardening theory, the evaluation model of the hardness of material after irradiation changes with the depth of indentation h is established;Based on the nanoin dentation test data, the material parameters in the evaluation model are determined using piecewise fitting strategy to calculate and evaluate the nanohardness of material at different depths.The present application uses polynomial fitting defect density distribution, which can more accurately describe the actual ion irradiation damage gradient compared to power-law distribution.

The invention relates to a method for measuring the concentration of hydrochloric acid based on spectral analysis, which comprises the following steps: S1, preparing a modeling sample set, each sample in the sample set containing H < + >, Cl <-> and at least one rare earth element ion; s2, determining a modeling wave band in a range of 1770 nm to 1853 nm, and collecting a spectrum of the sample set under the modeling wave band; step S3: carrying out pretreatment on the collected spectrum; s4, modeling by adopting a PLS2 algorithm based on the preprocessed spectrum, performing cross validation on each sample in modeling samples one by one, and determining an optimal model by comprehensively considering four main indexes SEC, SEP, R2 and LVs number indexes of the model; and S5, measuring the concentration of the hydrochloric acid solution to be measured through the optimal model.

The invention discloses a method for detecting heavy metal ferrous ions in the environment, and belongs to the field of heavy metal ion detection.The method comprises the following steps that 1, a color developing agent tetra (4-carboxyphenyl) porphyrin and a surfactant are added into a sample to be detected, the pH value of a system is adjusted to be acidic, and standing reaction is conducted after even mixing; and (2) after the reaction is completed, measuring the absorbance of the solution by adopting a spectrophotometric method, and calculating the concentration of the ferrous ions in the to-be-detected sample according to a standard curve of the ferrous ions. According to the method disclosed by the invention, ferrous ions react with the color developing agent to generate a stable orange red complex, and the method has the characteristics of high sensitivity, strong anti-interference capability and stable color developing agent; the defects of low sensitivity, poor anti-interference capability and poor stability of a color developing agent in the conventional phenanthroline spectrophotometric method for measuring the ferrous ions are overcome. The method does not need to depend on large-scale instruments and equipment, is simple and convenient to operate, and is very suitable for rapid detection of trace ferrous ions in water.

This ferromagnetic ferroelectric material has ferroelectricity and ferromagnetism, and contains a compound represented by any one of general formulae (1) to (3). Bi1-xA2+ xFe1-xM4+ xO3 ... (1) (In the formula, A is Mg, Ca, or Sr, and M is a 4d element or a 5d element that can form a tetravalent ion. x satisfies 0.02 ≤ x ≤ 0.15.) Bi1-xA+ xFe1-xM5+ xO3 ... (2) (In the formula, A is Na or K, and M is a 4d element or a 5d element that can form a pentavalent ion. x satisfies 0.02 ≤ x ≤ 0.15.) Bi1-2xA2+ 2xFe1-xM5+ xO3 ... (3) (In the formula, A is Mg, Ca, or Sr, and M is a 4d element or a 5d element that can form a pentavalent ion. x satisfies 0.02 ≤ x ≤ 0.15.)

The application discloses a method and system for monitoring sputtering yield of material in real time, and belongs to the technical field of plasma and material interaction. The method comprises the following steps: generating and guiding a plasma beam to continuously bombard the surface of a material to be measured by using a plasma generating device; collecting the intensity data of a characteristic optical emission spectrum line of a specific atom generated by sputtering on the surface of the material to be measured in real time; collecting the saturation current data of plasma ions bombarding the surface of the material to be measured in real time; calculating the sputtering particle flow density of the specific atom in real time based on the intensity data of the characteristic optical emission spectrum line and the photon emission efficiency; calculating the plasma ion flux density in real time based on the saturation current data of the plasma ions and the effective collection area of a probe; and calculating and outputting the sputtering yield in real time according to the ratio of the sputtering particle flow density to the plasma ion flux density. The embodiment of the application can monitor the sputtering yield generated by the material in real time, and effectively improve the accuracy of the obtained sputtering yield.

The invention provides an Hf and Ce co-doped yttrium lutetium silicate scintillation crystal as well as a preparation method and application thereof, and relates to the technical field of scintillation crystal material preparation. The chemical formula of the yttrium lutetium silicate scintillation crystal is (Hf < x > Ce < y > Y < z > Lu < 1-x-y-z >) < 2 > SiO < 5 >, x is less than or equal to 0.1, 0lt; y is less than or equal to 0.05, 0lt; z is less than or equal to 0.2, and is prepared by co-doping tetravalent Hf ions (Hf < 4 + >) in the lutetium yttrium silicate Ce-doped crystal, the introduction of Hf < 4 + > competes with oxygen vacancies and shallow electron traps in the crystal to capture electrons, and the concentration of the electron traps is effectively reduced, so that the fluorescence and flicker decay time of the crystal is effectively shortened, and the response speed of the crystal to radiation is improved.