131 results about "Ion pairs" patented technology

The invention belongs to the technical field of thermoelectricity, and relates to a preparation method and application of a quasi-solid thermoelectric material capable of realizing humidity stability by means of phase separation regulation, the preparation method comprises the following steps: dissolving a negatively charged hydrophilic monomer, an electrically neutral monomer, a cross-linking agent and a photoinitiator in a solvent to obtain a precursor solution, and carrying out an ultraviolet polymerization reaction to form polyelectrolyte gel; mixing the eutectic solvent with an electrolyte aqueous solution containing redox ion pairs and lithium chloride to obtain a quaternary electrolyte system; and immersing the gel into a quaternary electrolyte system, and fully replacing the internal solution through a diffusion effect to obtain the quasi-solid thermoelectric material with stable humidity. The thermoelectric material has the advantages of excellent Seebeck coefficient, good stability, high mechanical strength, large power density and the like, can supply power to wearable electronic products in an actual humidity fluctuation environment, breaks through the main bottleneck of actual application of quasi-solid ionic thermoelectric materials based on ionized water gel, and is wide in application prospect.

The invention belongs to the technical field of membrane separation, and particularly relates to a preparation method and application of a high-permeability polyamide reverse osmosis membrane. According to the invention, the problems of high energy consumption and poor water production quality caused by non-ideal flux and rejection rate of the current reverse osmosis membrane product are solved, tetrabutylammonium bromide and acyl chloride form ion pairs to reduce hydrophobicity, a hydrogen bond network of urea destroys a hydrophobic barrier of an organic phase, and migration of acyl chloride to a water phase interface is promoted; the eutectic solvent is adsorbed on a water phase interface to form a'catalytic microenvironment ', amido of an amine monomer is attracted to be close to the interface, and the concentration of a reaction area is increased. During reaction, tetrabutylammonium bromide enables an amine monomer to stably attack a transition state of acyl chloride through electrostatic interaction, and reaction activation energy is reduced; urea and sodium hydroxide in a water phase can be jointly used as an acid-binding agent to neutralize generated hydrochloric acid so as to prevent amido protonation inactivation. The method is simple to operate and suitable for large-scale production.

The invention belongs to the field of high polymer materials, and relates to a long and short branch chain type perfluorosulfonic acid resin, a proton membrane and a preparation method and application thereof, the resin structure has long branch chain perfluorosulfonic acid and short branch chain perfluorosulfonic acid structural units, and the structural advantages of the perfluorosulfonic acid resin are retained. Due to the introduction of a long-chain-chain perfluorosulfonic acid structure, the water absorption of the resin and the film can be regulated and controlled, and the dimensional stability is improved; besides, the cationic group in the structure can effectively improve the dissociation of the terminal sulfonic acid group, improve the ionic conductivity of the proton membrane, and solve the contradiction between long side chain and low conductivity. A sulfonic acid group in a short-branch-chain perfluorosulfonic acid structure and an amino group (-N) in a long-branch-chain perfluorosulfonic acid structure can form an acid-base ion pair, so that the strong water absorption effect of the sulfonic acid group in the proton membrane is effectively limited, and the mechanical property of the membrane can be greatly enhanced; in addition, formed ion pairs can also be used for ion conduction, so that the contradiction between'short side chain 'and'high swelling' is solved.

The invention relates to the technical field of hydrogen purification, and discloses a palladium membrane and a preparation method thereof.The method comprises the steps that irradiation treatment is conducted on a palladium-based membrane to obtain the palladium membrane, irradiation ions are adopted to conduct irradiation on at least one surface of the palladium-based membrane in the irradiation treatment, the ion implantation dosage is 1 * 10 < 17 > ions / cm < 2 >-8 * 10 < 17 > ions / cm < 2 >, and the energy of the irradiation ions is 15 keV-2 MeV. The palladium membrane provided by the invention has the advantages of high permeation flux, excellent isotope separation effect, short activation time and stable long-term operation stability.

The invention belongs to the field of plasma detection, and particularly relates to a method for detecting perfluoro and polyfluoroalkyl compounds in plasma. Comprising the following steps: extracting target perfluoro and polyfluoroalkyl compounds in plasma by adopting an ion pair extraction method: mixing the plasma with a buffer solution, adding a tetrabutylammonium hydrogen sulfate solution, uniformly mixing, adding an isotope labeling mixed solution as an internal standard, then adding methyl tert-butyl ether, centrifugally sucking supernate after vortex oscillation, repeatedly extracting, and collecting the target perfluoro and polyfluoroalkyl compounds in the plasma. Combining the supernate, blow-drying, and redissolving with a methanol solution to obtain a to-be-detected sample; detecting a to-be-detected sample through a liquid chromatography-quadrupole time-of-flight high-resolution mass spectrometry method; and analyzing the data to obtain the types and concentrations of the target perfluorinated and polyfluoroalkyl compounds. The method has the advantages of simplicity and convenience in sample treatment, short detection time, high resolution, high sensitivity and the like, and the concentration of trace PFASs in plasma can be efficiently, accurately and quantitatively analyzed.

The invention discloses a preparation method of novel stimuli-responsive foam, and belongs to the field of colloid and interface chemistry. The novel foam is jointly stabilized by an ionic surfactant and nanoparticles with the same charge. The stimulation-responsiveness of the foam takes an anion-cation pair as a trigger mechanism. The microstructure of the foam is different from that of common foam and Pickering foam, a low-concentration surfactant is adsorbed on a water / air interface and endows bubbles with surface charges, and nanoparticles are distributed in a water phase to form a thick water film, so that the distance between the bubbles is increased, Van der Waals gravitation between the bubbles is greatly reduced, and therefore, the foam can be used for preparing the water-based foam. And through repulsive interaction of double electric layers between particles, bubbles and bubbles and between particles and bubbles, coalescence of the bubbles is prevented, and stable bubbles are formed. When the anionic surfactant with the same mole as the cationic surfactant is added into the stable foam, the anionic surfactant and the cationic surfactant form ion pairs through electrostatic attraction, so that the cationic surfactant is desorbed from a water / air interface, and the foam disappears.

The invention relates to the technical field of membrane separation, in particular to an MOF glass membrane and a preparation method and application thereof. According to the MOF glass film, amorphous ZIF-62 serves as a matrix, crystalline ZIF-8 serves as filler, the crystalline ZIF-8 is evenly dispersed in the amorphous ZIF-62, and the mass ratio of the ZIF-62 to the ZIF-8 is 7: 3-9: 1. The detection result of the separation effect on different ion pairs shows that the MOF glass film has different transmission rates on potassium, sodium and lithium; when the mass ratio of ZIF-62 to ZIF-8 is 7: 3-9: 1, the MOF glass film has a certain separation effect on potassium, sodium and lithium, when the mass ratio is 7: 3, the separation effect is optimal, and the MOF glass film is expected to be applied to separation of alkali metal positive ions in many fields. The preparation method of the MOF glass film provided by the invention is simple in process route, mild in reaction condition and beneficial to large-scale production.

The invention belongs to the field of liquid chromatography-mass spectrometry detection, and discloses a liquid chromatography-mass spectrometry detection method for trace target objects in seawater, which comprises the following steps: firstly, configuring and precisely calibrating parameters such as flow velocity, column temperature, ion source voltage and the like for a liquid chromatography system, a chromatographic column, an automatic sampler and a tandem mass spectrometer; then, a methanol-water (containing 0.1% formic acid) system is adopted to implement linear gradient elution, polar difference component separation is considered, and analysis duration is compressed; a sample is subjected to solid-phase extraction, purification and concentration, then is automatically injected, is subjected to chromatographic separation and then enters an electrospray ion source; a mass spectrum end selects a dynamic multi-reaction monitoring (dMRM) mode, characteristic ion pairs are collected in a preset time window, and selective scanning and baseline noise suppression are achieved; and finally, utilizing retention time matching and internal standard correction to obtain a pg.L <-1 > magnitude quantitative result.

The invention provides an electrostatic interference elimination method for an air negative ion product. The air negative ion product comprises a negative high voltage electrode and a relative electrode. Particularly, the negative air ion product is provided with a static electricity elimination mechanism which is characterized in that a negative high-voltage electrode and an opposite electrode are electrically connected through an electric conduction medium, so that high voltage formed between the negative high-voltage electrode and the opposite electrode is applied to the electric conduction medium, and negative charges are transmitted to the opposite electrode along the electric conduction medium to be neutralized with positive charges; and static elimination is realized. Furthermore, the obvious reduction of the negative ion concentration is taken as the basis for executing the static elimination mechanism, and the execution is ended after 3-10 seconds. Or the obvious reduction of the working current of the negative ion generator circuit is taken as the basis for executing the static elimination mechanism, and the execution is ended after 3-10 seconds. The problem of electrostatic interference can be effectively solved, the air negative ion product can efficiently, stably and continuously generate high-concentration air negative ions, and a positive health effect is generated for a product user.

The invention discloses an acrylate emulsion containing a zinc ion crosslinking agent and a preparation method of the acrylate emulsion, and alkali-soluble resin containing zinc ions is used as a macromolecular surfactant to prepare a self-crosslinking polyacrylate emulsion. In the emulsion polymerization process, a Zn < 2 + > metal ion cross-linking agent is introduced, so that the problem of demulsification caused by damage of high-valence metal cations in the metal ion cross-linking agent to double electric layers of the anionic acrylic emulsion is solved, the degree of cross-linking of a latex film is remarkably improved, the fineness and the particle size of the emulsion are effectively reduced, and the preparation method is simple and easy to implement. And the latex film is endowed with a certain antibacterial function.

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.

The invention provides an extraction and identification method of geranyl primumoside and linaloyl primumoside. The method comprises the following steps: 1) extracting geranyl primumoside and linaloyl primumoside in agricultural products; (2) carrying out chromatographic separation on geranyl primumoside and linaloyl primumoside by virtue of a liquid chromatography-tandem mass spectrometry method; (3) monitoring four pairs of mass ion pairs 447.2 gt in an ESI-mode through a liquid chromatography-tandem mass spectrometry method; 315.2 gt, 447.2 gt, 315.2 gt 161.1, 447.2 gt, 447.2 gt; 89.0, 447.2 gt, 447.2 gt; 149.2, and the strength is greater than 149.2; 4) comparing the intensity of each mass ion pair of the chromatographic peak at the same retention time, wherein the intensity is 447.2 gt; the strength of 149.2 is greater than 447.2 gt; when the specific value is greater than 1, the compound corresponding to the chromatographic peak is judged to be geranyl primuloside; when the gt is 447.2 gt; the strength of 149.2 is less than 447.2 gt; and when the intensity is less than 1, the compound corresponding to the chromatographic peak is judged to be linalyl primuroside. The method has the advantages that the extraction operation is simple, the analysis is rapid and efficient, the period is short, and the identification sensitivity of the geranyl primuroside and the linalyl primuroside in the agricultural products is remarkably improved.

The invention relates to a fluorescent probe applied to hypochlorous acid detection and a preparation method and application thereof, and belongs to the field of fluorescent probes. The preparation method of the probe comprises the following steps: reacting 1, 3-indandione with malononitrile under the catalysis of sodium acetate to obtain a compound 1, and then respectively synthesizing the compound 1 and the 1, 3-indandione with 4-dimethylamino cinnamyl aldehyde through nucleophilic addition reaction to synthesize a fluorescent probe 1 and a fluorescent probe 2. The prepared fluorescent probe can still specifically recognize hypochlorite ions even in various ion environments, has good selectivity to the hypochlorite ions, is high in specificity, simple to operate in the testing process and extremely sensitive in reaction, ensures rapid detection, can be directly used in water, greatly improves the detection convenience, and has a wide application prospect. And real-time monitoring and field application can be realized.

The invention discloses an electrolyte, a lithium ion battery and an electronic product. The electrolyte comprises electrolyte salt and a solvent; wherein the concentration of the electrolyte salt is 0.1 mol / L-5 mol / L, and the ether solvent comprises one or more of dimethoxymethane, diethoxymethane, 1, 2-diethoxyethane, 1, 3-dioxolane, 1, 3-dioxane, 1, 4-dioxane, tetrahydrofuran, 2-methyltetrahydrofuran, tetrahydropyran, diethyl ether, cyclopentyl methyl ether, triethylene glycol dimethyl ether and tetraethylene glycol dimethyl ether. According to the electrolyte provided by the invention, the ether solvents are reasonably screened, and the ether solvents with relatively weak lithium salt dissolving capacity are selected, so that the electrolyte forms contact ion pairs and aggregation ion pairs at low concentration, and then anion derivative interface chemistry is introduced, and the obtained electrolyte reduces co-intercalation behaviors and is relatively good in stability at low temperature; the method is suitable for low-temperature environments.

The invention belongs to the field of electric propulsion, and particularly relates to a neutralization compensation electrode applied to a Hall thruster. The neutralization compensation electrode is fixed on the outlet side of the Hall thruster and comprises an insulating connecting seat, an electronic ring and N non-magnetic and conductive fixing blocks, the electronic ring generates electrons under the sputtering of high-energy ions generated by the Hall thruster, the high-temperature environment at the outlet of the Hall thruster also promotes the electrons of the electronic ring to overflow, and the electrons generated by the electronic ring move towards the high-potential outlet of the Hall thruster to neutralize the electrons in the plume region at the outlet of the Hall thruster; the neutralization compensation electrode can reduce sputtering of high-energy ions on a shell of the Hall thruster when the thruster is ignited, and meanwhile, an electron ring is bombarded by ions by utilizing a charge exchange ionization phenomenon, so that secondary electrons are generated and are used for providing electrons.

The invention provides anion exchange resin, a preparation method thereof and an anion exchange membrane. The anion exchange resin has a structure as shown in a formula (1). Carbonyl is introduced into the formula (1), the carbonyl has strong electronegativity and conjugation ability, the carbonyl can disperse positive charges of nitrogen-containing heterocyclic cations and weaken the electron withdrawing effect of the nitrogen-containing heterocyclic cations on a skeleton structure, the polarization degree of chemical bonds of the skeleton structure is reduced, then the stability of the skeleton structure is improved, and the skeleton structure is not prone to breakage; and the structural stability of the anion exchange resin and the continuity of an ion transmission channel are ensured. Besides, carbonyl is used as a strong polar group, the carbonyl and a skeleton structure form a remarkable polarity difference, and the polarity difference can induce polymer molecules to realize nanoscale phase separation, promote the formation of a high-speed ion transmission channel, reduce the ion transmission resistance and improve the ion transmission performance of the anion exchange membrane.

The invention discloses a fluorescent viologen-based organic ion pair charge transfer nanoparticle and a preparation method and application thereof.The method comprises the steps that firstly, dithio-oxamide and 4-pyridylaldehyde react under the water-free and oxygen-free condition, and thiazolothiazole bipyridine is prepared; then, under the argon protection state, the thiazolothiazole bipyridine reacts with an alkylating reagent, and N-ionized thiazolothiazole bridged viologen is prepared; and finally, mixing the N-ionized thiazolothiazole bridged viologen with sodium tetraphenylborate and polyvinylpyrrolidone to react, so as to prepare the organic ion pair charge transfer nanoparticles based on the fluorescent viologen. According to the invention, the progressive design from molecular skeleton reconstruction to supramolecular assembly reinforcement systematically breaks the core technical bottleneck of viologen photochromic materials in the aspects of electronic structure and environmental stability.

The invention discloses a method and a device for performing energy resolution cascade mass spectrometry on a sample based on an ion trap, and the method comprises the following steps: performing ionization treatment on a to-be-detected sample to obtain to-be-detected ions; enabling the to-be-detected ions to enter a linear ion trap, and screening out target ions; amplitude scanning processing is carried out on the target ions, and the amplitude scanning processing comprises the steps that first alternating voltage is applied to the x direction of the linear ion trap so that the target ions can be cracked into daughter ions, and meanwhile second alternating voltage is applied to the y direction of the linear ion trap so that the daughter ions can be separated from the linear ion trap; enabling a detector to obtain the daughter ions so as to obtain a detection result of the to-be-detected sample. According to the method disclosed by the invention, continuous energy scanning and fragmentation of parent ions can be realized through the first alternating-current voltage amplitude which is increased along with time by utilizing a single ion trap and only through single sample introduction, and daughter ions are synchronously emitted by utilizing the constant second alternating-current voltage amplitude in the orthogonal direction for detection; and the efficiency and the accuracy of energy resolution cascade mass spectrometry are improved.

There is provided a system and method of selectively monitoring ions in a fluid medium using a graphene sensor, the method comprising the step of adjusting an operating frequency of the graphene sensor to a particular resonant frequency for targeting resonance of specific ions in the fluid medium. In the proposed method, dispersive effect of the fluid medium is used to tune the graphene sensor to a desired frequency, thereby obtaining resonance response for specific ions in the fluid medium. Also, the monitoring of a specific ion in the fluid medium is unaffected by presence of a plurality of other ions in the said fluid medium.

The invention provides an air cleaning system and method suitable for a movable closed space. The air cleaning system comprises an electrified gas generation source, a blow-out system, a circulating system and one or more electrical neutralization devices. Wherein the electrical neutralization device is arranged in the movable closed space so as to neutralize charged gas in the movable closed space. According to the air cleaning system, the charged gas generating source is used for generating charged gas with high-concentration negative ions, and the electrical neutralization device is arranged in the movable closed space, so that not only can personnel in the movable closed space enjoy high-quality air, but also the adverse effect of the high-concentration negative ions on important electrical equipment can be avoided.

This invention provides an ion-doped calcium oxalate thermochemical heat storage material and its preparation method, the chemical formula of which is Ca. 1‑ x M x C2O4·H2O, where M is a dopant ion and x is the mole fraction of the dopant ion; M includes Mg 2+ Co 2+ Zn 2+ 、Sr 2+ One or more of the following. This invention regulates the lattice parameters, local coordination environment, defect state, and microstructure of calcium oxalate by doping with ions. While maintaining the original reversibility and cycle stability of the calcium oxalate system, it further optimizes its dehydration thermal storage temperature range, thermal response boundary, structural evolution behavior, and application compatibility materials, thereby improving the thermochemical thermal storage performance of calcium oxalate from the internal structural level.

The invention discloses a Sm / Ce / Ni / Fe / Hf doped BSBNT-based ceramic material with high energy storage density under a low electric field and a preparation method thereof, aiming at Bi < 3 + >, Na < + >, Ba < 2 + > and Sr < 2 + > ions at the A site of a (Bi0. 5Na0. 5) 0.6 (Ba0. 3Sr0. 7) 0.4 TiO3 ceramic material, composite high-valence ions [Sm0. 8Ce0. 2] 3.2 < + > composed of Sm < 3 + > and Ce < 4 + > with coordination of 12 are used for doping and substitution, aiming at Ti < 4 + > ions at the B site, composite low-valence ions [Ni0. 25Fe0. 35Hf0. 4] 3.15 < + > composed of Ni < 2 + >, Fe < 3 + > and Through the composite doping modification, the dielectric temperature stability is improved while the high Pmax is maintained, the Pr is reduced and the effective energy storage density of a unit electric field is improved, so that a novel environment-friendly energy storage ceramic material with excellent comprehensive electrical properties under a low electric field is provided.

An ion-pair-bound homogeneous catalytic system, and a method for synthesizing 5-hydroxymethylfurfural. The homogeneous catalytic system comprises a quaternary ammonium salt, a homogeneous acid and water. The method comprises: mixing fructose with an ion-pair-bound homogeneous catalytic system to form a homogeneous catalytic reaction system; reacting the homogeneous catalytic reaction system under reduced pressure, and after the completion of the reaction, adding a quenching agent to quench the reaction; extracting the obtained reaction mixture; and then respectively separating 5-hydroxymethylfurfural and the ion-pair-bound homogeneous catalytic system from a light phase and a heavy phase formed after the extraction. The reaction can achieve the simple, safe and efficient synthesis of 5-hydroxymethylfurfural under mild conditions; the conversion rate of the raw material fructose is high; the yield of the target product, i.e., 5-hydroxymethylfurfural, is high; and the separation operation can be conveniently conducted. Moreover, the used ion-pair-bound homogeneous catalytic system that is formed from a quaternary ammonium salt, a homogeneous acid and water is convenient to recover and reuse. Therefore, the method is environmentally friendly and economical, and has broad application prospects.

The invention discloses thermoelectric ionic gel as well as a preparation method and application thereof. The thermoelectric ionic gel comprises the following components: a hydrophilic polymer skeleton, a zwitterion donor, a redox ion pair and water, wherein the hydrophilic polymer skeleton is prepared by reacting a hydrophilic straight-chain polymer and a hydrophilic monomer containing carbon-carbon double bonds. The preparation method of the thermoelectric ionic gel comprises the following steps: 1) dispersing a hydrophilic straight-chain polymer, a hydrophilic monomer containing a carbon-carbon double bond, a zwitterion donor, an initiator and a cross-linking agent in water for polymerization reaction to obtain ionic gel; and 2) immersing the ionized water gel into a redox ion pair aqueous solution for ion exchange, and then aging. The thermoelectric ionic gel disclosed by the invention has excellent ionic thermoelectric performance and excellent flame retardance, can realize efficient energy storage under temperature difference, and is suitable for preparing thermoelectric supercapacitors, fire early warning devices, flame-retardant materials or thermoelectric conversion materials.

The invention discloses an Nd / Ce / Co / Al / Mn doped BSBNT-based ceramic material with high energy storage density under a low electric field and a preparation method thereof, aiming at Bi < 3 + >, Na < + >, Ba < 2 + > and Sr < 2 + > ions at the A site of a (Bi0. 5Na0. 5) 0.6 (Ba0. 3Sr0. 7) 0.4 TiO3 ceramic material, composite high-valence ions [Nd0. 8Ce0. 2] 3.2 < + > formed by Nd < 3 + > and Ce < 4 + > with coordination of 12 are used for doping and substitution, aiming at Ti < 4 + > ions at the B site, composite low-valence ions [Co0. 2Al0. 5Mn0. 3] 3.1 < + > formed by Co < 2 + >, Al < 3 + > and Mn < 4 + Through the composite doping modification, the dielectric temperature stability is improved while the high Pmax is maintained, the Pr is reduced and the effective energy storage density of a unit electric field is improved, so that a novel environment-friendly energy storage ceramic material with excellent comprehensive electrical properties under a low electric field is provided.

The invention belongs to the field of mass spectrum ionization, and particularly relates to a photoinduced Penning ionization mass spectrum method. Photoelectrons generated by a photoelectric effect accelerate in an electric field to obtain enough energy, helium He, neon Ne and argon Ar in ground states are excited to metastable states, and the energy of the metastable states of the neutral atoms is higher than 10.6 eV (He excitation energy is 20.62 eV and 19.82 eV); the excitation energy of Ne is 16.72 eV, and the excitation energy of Ne is 16.62 eV; the excitation energy of Ar is 11.72 eV and 11.55 eV), sample molecules with ionization energy higher than photon energy and incapable of being ionized by traditional photoionization can be ionized through Penning ionization, so that the reduction of mass spectrum resolution, sensitivity and quantitative capacity caused by a space charge effect caused by coulomb repulsion among too strong reagent ions in an ion transmission process is avoided, and the detection sensitivity is improved. And damage of too strong reagent ions to the ion detector. The sensitivity can be improved by about 5 times for sample molecules ionized by traditional photo ionization energy, such as toluene, with ionization energy lower than photon energy.

The present invention generally relates to electrolytes for various electrochemical devices. In some cases, it is relatively safe to use the electrolyte; for example, the electrolyte can withstand overheating, fire, combustion, explosion, etc. In some embodiments, such electrolytes can be used for certain types of high-voltage cathode materials. In some cases, the electrolyte can include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates or sulfones, etc. Other aspects of the present invention generally relate to devices including such electrolytes, methods for making or using such electrolytes, or kits including such electrolytes, etc.

This invention relates to the field of slickwater technology, specifically to a high-efficiency proppant-carrying slickwater. It comprises a shear-responsive smart thickener and inorganic salts dispersed in an aqueous phase; the smart thickener is composed of ABA-type temperature-ion dual-responsive block copolymers and nano-silica particles with surface-grafted hydrophobic alkyl chains and cationic groups. The slickwater of this invention exhibits ultra-low viscosity and high drag reduction during the pumping stage (low temperature, high shear); upon entering a fracture, the synergistic effect of temperature rise and instantaneous high-speed shear triggers hydrophobic association of the copolymer and interweaving of the nanoparticles, forming a three-dimensional network structure; under the low-shear environment within the fracture, the network structure self-reinforces through ordered reconstruction of ion pairs, achieving high-viscosity proppant carrying. Its core lies in transforming the inherent temperature rise and shear effects of the process into a driving force for constructing a proppant-carrying network, thereby effectively resolving the contradiction between low-friction pumping and high proppant carrying capacity in slickwater volumetric fracturing and significantly reducing reservoir damage.

The present invention provides a method for preparing a paper-based cobalt-doped terbium metal-organic framework material with reasonable design and simple operation. Isophthalic acid is used as a metal ion ligand to prepare a cobalt-doped terbium metal-organic framework. The prepared cobalt-doped terbium metal-organic framework material can be used as an electrochemiluminescent luminescent reagent and a co-reaction promoter. The cobalt-doped terbium metal-organic framework has a larger pore size and volume, a higher surface area and a lower electron transfer resistance, which makes it easier for reactants and active intermediates to approach the electrochemiluminescent internal luminescent reagent, thereby improving the electrochemiluminescent emission performance. At the same time, the catalytic effect of cobalt ions on hydrogen peroxide can be used to construct an electrochemiluminescence mechanism in which a double co-reaction promoter enhances the signal intensity, thereby amplifying the electrochemiluminescence signal. The lanthanide metal-organic framework has the advantages of high sensitivity, wide detection range, stable response, etc., and has broad application prospects in the field of electrochemiluminescence.

The invention relates to tellurate glass for a temperature sensor and a preparation method of the tellurate glass, and belongs to the technical field of optical luminescent materials. TeO2, ZnO, ZnF2 and Gd2O3 are used as matrixes of the tellurate glass, Er2O3 and YbF3 are doped, and the preparation method comprises the following steps: grinding and heating the raw materials, annealing and polishing. The prepared tellurate glass has low phonon energy, high chemical stability, excellent thermal stability and high rare earth ion solubility. More importantly, a specific rare earth ion pair in the glass can generate two fluorescence emission peaks of which the intensity is sensitively changed along with the temperature under the pumping of a specific wavelength (such as 980nm), and high-precision temperature sensing can be realized by monitoring the fluorescence intensity ratio of the two fluorescence emission peaks. The preparation process is simple, the cost is low, and the obtained glass material has a wide application prospect in the field of non-contact optical temperature sensors.