18 results about "Chemical interaction" patented technology

The present disclosure provides methods for inhibiting scale formation in subterranean reservoirs. The methods may include depositing silica-based nanoparticles on a surface of the subterranean reservoir and transporting a scale inhibitor to the surface of the subterranean reservoir. The scale inhibitor may adhere to the silica-based nanoparticles through a chemical interaction. The silica-based nanoparticles may adhere to one or more surfaces within the subterranean reservoir.

This invention relates to a method for highly selective adsorption of low partial pressure CO2 using an ultraporous azole ionic liquid material, belonging to the field of gas separation and purification technology. The ultraporous ionic liquid material is an ionic adsorbent with selective CO2 adsorption sites and an ultraporous pore distribution, formed by modifying the surface and pore structure of a porous support with multi-site azole ionic liquids. This method is simple to synthesize and easy to scale up. Furthermore, due to the strong chemical interaction between the electronegative sites on the ionic liquid anions and CO2, as well as the ultraporous effect, it synergistically enhances the efficient capture and separation of low partial pressure CO2. Simultaneously, CO2 can be completely desorbed by heating or depressurization. The regenerated ultraporous ionic liquid material is recyclable and exhibits stable performance. This method has advantages such as high capacity and selectivity for low partial pressure CO2, good stability, and recyclability, and has great potential for application in CO2 capture and purification separation.

Electrochromic devices having buffer layer(s) promoting electron transfer between the second transparent electrode and second electrochromic layer while concurrently reducing or inhibiting deleterious chemical interaction between the second electrochromic layer and the second electrode and / or maintaining the conductive state of the second electrode while the device changes from a low transparency of approximately 10-20% transmittance in the visible region to a high transparency of approximately 75% to 95% transmittance with at least a 70% difference in transmittance between the low and high transmittance states and promotes longevity of the device. In certain aspects, the electrochromic devices change from a low transparency state having a gray color to a high transparency state that is substantially colorless within 20 seconds of applying the selective electrical potential to the electrochromic device. The electrochromic device is operated by electrically holding and controlling electrons going into the electrochromic device so a surface reflectivity level varies.

This description relates to a battery element comprising the following: - Electrodes including an anode and a cathode, and - An electrolyte comprising a crystalline material having the composition M2B2O5.x(HOH).y(NOH) between the electrodes. Here, M and N are alkali metals or hydrogen or a mixture of alkali metals or hydrogen, B is titanium, O and H represent elemental oxygen and hydrogen, respectively, and x and y are between 0 and 4 and indicate the presence of H+, OH-, and N+ ions that can move within the crystalline material. In particular, at least one type of ion among H+, OH-, N+, and M+ is mobile to move toward at least one of the electrodes within the crystalline material, and at least one of the electrodes is made of a material suitable for performing chemical interactions with at least one of the H+, OH-, N+, and M+ ions.

The application discloses a hydrogen loss prediction method for an underground hydrogen storage library, and relates to the underground hydrogen storage field.The method comprises the following steps: obtaining time-varying flux of dynamic gas charging and discharging of the underground hydrogen storage library, and establishing a balance physical model of the underground hydrogen storage library; according to a dissolution trend of different minerals under a hydrogen gas, fluid and rock chemical reaction system, a dissolution kinetics model of the different minerals is established; then, the time-varying flux of dynamic gas charging and discharging of the underground hydrogen storage library is combined with the balance physical model and the dissolution kinetics model to solve, so that the change conditions of mineral composition, solution composition and gas composition in the underground hydrogen storage library are obtained, and the hydrogen storage condition of the underground hydrogen storage library is predicted.The application fully considers the complex physical and chemical interaction between hydrogen and reservoir media in the dynamic charging and discharging process of the underground hydrogen storage library, realizes the prediction of hydrogen loss, and improves the efficiency of safe and stable operation of the underground hydrogen storage library.

This invention relates to the field of fuel additive technology, specifically to a nano-magnesium hydride-attapulgite composite fuel additive and its preparation method. The additive consists of nano-magnesium hydride, a modified attapulgite carrier, and a cerium-based combustion-supporting catalyst, with a mass ratio of 1:(5-20):(0.01-0.1). The modified attapulgite carrier is a surface-grafted graphene-coated composite carrier material. This application achieves anchoring by isolating nano-magnesium hydride particles through a physical barrier network of graphene sheets and by overcoming the strong chemical interaction between the grafted functional groups and nano-magnesium hydride, thus solving the core problems of unstable dispersion, easy agglomeration and deactivation, and insufficient carrier compatibility and anchoring ability. Under the high-temperature environment of the combustion chamber, the highly active hydrogen species released by the decomposition of nano-magnesium hydride can hydrogenate and crack fuel macromolecules and soot precursors, accelerating the combustion chain reaction. The cerium-based compounds provide continuous active oxygen for deep oxidation of soot through their oxygen storage and release function.

A computer-implemented method includes identifying, in a set of previously aligned nucleotide and polypeptide sequences characteristic of a candidate protein, which can be referred to as target residues; identifying at least one candidate region consisting of at least one pair of target residues identified in the first step that include target residues located at a determined distance in space and being exposed at the surface of the candidate protein; determining the advantageous chemical interactions between each residue and / or between each pair of residues within the candidate protein, from the 2D and / or 3D structure of the candidate protein that are hydrophobic bonds and / or hydrogen bonds and / or saline bridges and / or negative-repulsion and / or positive-repulsion bonds; selecting the residues linked by said advantageous chemical interactions that are at a distance of at most 10 angstroms; and selecting at least one therapeutic target region from among the candidate regions that include the selected residues.

This invention discloses a functionalized MXene-supported metal oxide catalytic material, its preparation method, and its applications. The preparation method includes: fully contacting a pretreated metal substrate with a liquid-phase system containing MXene and metal ions and reacting at high temperature, followed by annealing in air to obtain the MXene-supported metal oxide material; and then subjecting it to electrochemical or chemical treatment to obtain the functionalized MXene-supported metal oxide catalytic material. In the functionalized MXene-supported metal oxide catalytic material of this invention, electron transfer occurs between the functionalized MXene and the metal oxide, promoting the formation of more active sites in the metal oxide that are conducive to catalyst-reactant electron exchange, thereby improving the activity of the oxygen evolution reaction (OER). Simultaneously, the functionalized MXene has abundant surface groups, which can generate strong chemical interactions with the metal oxide, improving the stability of the metal oxide in acidic media.

This invention relates to the field of batteries, specifically disclosing perovskite solar cells and tandem solar cells, photovoltaic modules, power generation devices, and power consumption devices. The perovskite solar cell of this invention includes: a first electrode layer; a hole transport layer disposed on one side of the first electrode layer; a perovskite layer disposed on the side of the hole transport layer opposite to the first electrode layer; and a second electrode layer disposed on the side of the perovskite layer opposite to the hole transport layer. The hole transport layer comprises a compound of Formula I and a hole transport material. This invention uses a compound of Formula I with electron-donating groups on both sides as an interface passivation material for the perovskite layer. The electron-donating groups on both sides generate chemical bonds and / or chemical interactions with cations in the perovskite layer, reducing interface defects in the perovskite layer, optimizing interface contact, and thus improving the photoelectric performance of the battery.

The application discloses a perovskite solar cell containing a double-layer trifluoroacetate modification layer and a preparation method thereof. The perovskite solar cell comprises, from bottom to top, a conductive glass, an electron transport layer, an electron transport layer modification layer, a perovskite layer, a perovskite modification layer, a hole transport layer and an electrode; the electron transport layer modification layer and the perovskite modification layer are one of methylamine trifluoroacetate, formamidine trifluoroacetate, dimethylamine trifluoroacetate, ethylamidine trifluoroacetate, ethylenediamine trifluoroacetate and guanidine trifluoroacetate. The application simultaneously fills and modifies defects of the electron transport layer and the perovskite layer, passivates oxygen defects in the tin oxide and ion vacancies in the perovskite layer through hydrogen bonds and chemical interactions, and solves the problems of the perovskite solar cell, such as many defects in the electron transport layer and the perovskite layer, low efficiency and poor stability.

The application discloses a MXene@NiSe2 heterostructure material for a lithium-sulfur battery sulfur host material and a preparation method thereof.The method is characterized in that: the MXene material is obtained through etching and hand shaking centrifugation on a MAX phase material, and a large number of negative charges on the surface of the material can attract positive metal ions; the MXene material is used as a support material to grow NiSe2 nanoparticles on the surface of the material through further microwave reaction, thereby obtaining the MXene@NiSe2 heterostructure material; when the material is applied to a lithium-sulfur battery sulfur host material, a large number of functional groups on the surface of the MXene material can promote the formation of strong chemical interaction with polysulfides and effectively catalyze the reaction kinetics; the excellent conductivity of the MXene material and the catalytic activity of the NiSe2 material can relieve the "shuttle effect", meanwhile, the contact interface (heterostructure) between the two materials can generate more catalytic / adsorption active sites, promote electron transfer, and improve the rate capability and cycle stability of the battery; and the material prepared by the application can improve the performance of the lithium-sulfur battery and has a large application prospect.

The application provides a method and system for simulating the physical and chemical coupling of atmospheric diffusion under a nuclear and chemical integrated accident scene. The method first constructs a parameterized model of a nuclear and chemical integrated source term, determines the distribution ratio of nuclides on particles of different chemical properties according to the physical characteristics of nuclides and the release rate of chemical components; then runs the aerosol dynamics coupling evolution operator to monitor the concentration of hazardous chemicals and the relative humidity in the simulation space in real time, calculates the particle size change and density change of the nuclide carrier aerosol in the diffusion process; based on the evolved physical parameters, the settling term in the atmospheric diffusion equation is corrected in real time, and the dynamic diffusion distribution of radioactive nuclides in three-dimensional space is deduced by using the iterative step method; finally, the ground pollution correction map and the synergistic damage evaluation results under the nuclear and chemical integrated accident are output in combination with the chemical and radiation synergistic factors. The application solves the problem of diffusion prediction distortion caused by the neglect of the physical and chemical interaction in the traditional model, and improves the accuracy of complex disaster consequence evaluation.

The application provides an anti-ultraviolet water-based paint based on metal polyphenol network modified mica nanosheets and a preparation method thereof. The paint comprises metal polyphenol network modified mica nanosheets, a polymer carrier and water, wherein the metal polyphenol network modified mica nanosheets comprise mica nanosheets and a metal polyphenol network chemically modified on the surface of the mica nanosheets, the metal polyphenol network is a complex structure formed by the combination and assembly of plant polyphenols and metal ions through chemical interaction therebetween, wherein in the metal polyphenol network modified mica nanosheets, the molar ratio between the plant polyphenols and the metal ions is in the range of 1:3-4:1, and the modification amount of the metal polyphenol network accounts for 10%-50% of the mass of the mica nanosheets. The paint has excellent ultraviolet shielding performance and also has transparency, and is thus very suitable for applications in occasions requiring high transparency, such as building glass, automobile windows, transparent packaging materials and the like.

The application relates to the technical field of intelligent prediction of functional materials, in particular to a MOF chemical warfare agent adsorption performance prediction method based on a bidirectional attention mechanism, which comprises the following steps: constructing a standardized data set containing a MOF crystal structure, a guest molecule and an adsorption amount label; using a Matformer self-attention mechanism to extract a MOF atomic-level crystal embedding, and performing topological feature coding on the guest molecule; performing host-guest collaborative interaction modeling through a bidirectional cross-attention mechanism, and dynamically capturing the physical and chemical interactions between the skeleton and the molecule; and inputting the fused features into a regression module to output adsorption prediction values. The application can eliminate the dependence on artificial geometric descriptors, restore the host-guest response in the adsorption process at the atomic scale, significantly improve the prediction accuracy and calculation efficiency, and provide a scientific basis for the rapid screening and directional design of high-performance protective materials.

The application relates to the technical field of semiconductor devices, and discloses a surface passivation method for a semiconductor functional layer in a semiconductor device and application thereof. The surface passivation method comprises arranging a blending layer; the material of the blending layer comprises at least one charge transport material and at least one defect passivation material; and the position of the blending layer is selected from any one of the following: directly contacting the semiconductor functional layer; being located between a passivation layer on the surface of the semiconductor functional layer and a charge transport layer; or being located between two charge transport layers on one side of the semiconductor functional layer. The blending layer realizes efficient surface passivation by using the chemical interaction between the passivation material and the surface defects of the semiconductor, and inhibits non-radiative recombination; meanwhile, the charge transport material in the blending layer constructs a continuous seepage network, guarantees efficient extraction and directional transmission of carriers, and overcomes the fundamental contradiction between efficient passivation and efficient carrier transmission in the prior art.

A connector for use in an ultra-high vacuum system is disclosed herein. The connector has a metal conduit section with a first hardness, a metal fitting with a second hardness greater than the first hardness, and a metallic reaction-inhibiting barrier positioned between the conduit section and the fitting to sealingly attach the fitting to the conduit section. In some embodiments, application of a mechanical stressor such as stretching or treatment with a mechanical oxide disruptor removes oxide from and prevents oxide re-formation on the faying surface of the conduit section. In alternate embodiments, oxide is removed from the faying surface of the conduit section and oxide re-formation is subsequently prevented by applying an oxide inhibitor. The reaction-inhibiting barrier substantially inhibits metallic and chemical interaction between the conduit section and the fitting under ultra-high vacuum, temperature cycling, mechanical stress, and reactive chemical conditions, as are present during manufacturing.

The application discloses a kind of based on C 60 SnO2 composite electron transport layer's non-hysteresis flexible perovskite solar cell and preparation method thereof belong to the technical field of semiconductor optoelectronic device preparation field.The application adopts low-temperature atomic layer deposition technology, in C 60 Surface in situ deposition SnO2 Film, through spin coating process constructs C 60 SnO2 composite electron transport layer for flexible perovskite solar cell.The application utilizes SnO2 to bridge C 60 Electronic transport layer and perovskite layer, its special structure and surface functional group effectively enhance the chemical interaction between C 60 Perovskite, passivates interface defect.Meanwhile the hydrophobicity of C 60 Heterogeneous nucleation process of perovskite film is inhibited, and high-quality perovskite grain with larger and more uniform size is generated, realizing bulk defect passivation of perovskite, hysteresis phenomenon is obviously inhibited, and good stability is shown, and the performance and stability of solar cell are synergistically improved.

This invention relates to the field of superhard material manufacturing technology, specifically to a rare-earth-doped high-performance polycrystalline diamond composite sheet and its preparation method. The composite sheet includes a cemented carbide matrix and a polycrystalline diamond layer sintered thereon. The polycrystalline diamond layer comprises diamond micron powder, a binder, and rare-earth additives. The rare-earth additives are one or more elements selected from neodymium, praseodymium, dysprosium, terbium, europium, samarium, yttrium, terbium, lanthanum, cerium, yttrium, and neodymium, or one or more of their oxides or carbides. The content of the rare-earth additives in the polycrystalline diamond layer is 0.1-5.0 wt%. This invention addresses the problem that in existing technologies, the bonding between diamond and binders such as cobalt is mainly physical encapsulation and weak chemical interaction, which can easily become a failure initiation point under high temperature, high pressure, or impact loads.