19 results about "Oxyanion" patented technology

The invention discloses a method for activating manganese dioxide by using oxygen-containing anions, which comprises the following steps: placing delta-MnO2 in simulated distribution water, adding NH4 < + > to enable the concentration of the delta-MnO2 to be 2 mg / L, oscillating and incubating in a shaking table for more than 20 days, and changing the water once every 1-2 days to obtain manganese oxide with NH4 < + > oxidation capacity, the simulated distribution water contains oxygen anions with the following concentrations: 2 mM of HCO3 <->; and 0.002 mM of HPO4 < 2->. According to the method disclosed by the invention, the structure of delta-MnO2 is optimized by controlling the ratio of bicarbonate ions to hydrogen phosphate ions in water, so that the oxidation capacity of delta-MnO2 is remarkably improved, and NH4 < + > in water can be removed within a few hours instead of the original capacity without catalytic oxidation of NH4 < + >. The invention provides a feasible and economical solution for large-scale preparation of MnO2-based filter materials and water deamination engineering, and has a wide engineering application prospect.

The invention belongs to the technical field of nano-catalyst antibiosis, and particularly relates to a zinc-based nitrogen-doped carbon-loaded metal palladium nano-enzyme as well as a preparation method and application thereof. The ZnNC-loaded metal palladium nano-enzyme is prepared by adopting a deposition-precipitation method which is simple to operate, taking ZnNC as a carrier and taking metal palladium nano-particles as an active center. The nano-enzyme has excellent oxidase-like activity, can catalyze O2 to generate hydroxyl free radicals (. OH), singlet oxygen (< 1 > O2) and superoxide anion free radicals (O2 <->) so as to kill bacteria and achieve an antibacterial effect, and has a remarkable antibacterial effect on escherichia coli under an acidic condition.

This invention belongs to the field of nanomaterials technology, and relates to the application of sulfonated thiobridged azocalixarene and its complexes with manganese in scavenging reactive oxygen species. The sulfonated thiobridged azocalixarene has the building unit TSAC4A and the chemical formula C2. 48 H 28 N8Na4O 16 S8, with the following structural formula, shows that manganese ions, acting as coordinating metals, form a stable metal complex with TSAC4A in water. This invention utilizes Mn... 2+ -TSAC4A exhibits excellent scavenging ability for superoxide anions, with a scavenging efficiency far exceeding that of TSAC4A and Mn at the same concentration. 2+ The summation of TSAC4A and Mn indicates that TSAC4A and Mn 2+ It exhibits a good synergistic effect in the scavenging of superoxide anions.

The present invention is directed to a ligated metal-organic framework (MOF) for use in removing both anionic and cationic species from a liquid or liquid stream. The present invention also provides methods for placing the MOF on a substrate to form a MOF-containing product that can be used in the removal of certain species from a given fluid. The MOF may be a Zr-based MOF, such as NU-1000, for removal of certain anions, such as oxy-anions, or having an attached thiosulfonyl-thiol (—SO2—S—R2—SH, where R2 is an alkyl group) ligand for complexation with certain cationic species in addition to the anions. The substrate may be any substrate to which a given MOF may be attached, including inert polypropylene polymer resin beads, a macroscopic fabric such as a mesh material or mesh filter, and a molecular fabric.

The invention aims to solve the problem of anode material during electrolysis of oxysalt aqueous solution. The anode in the technology does not need metal titanium, iridium, tantalum, platinum, tin, antimony or oxides thereof, but directly uses relatively cheap metal lead. The main purposes of reducing the cost of the related electrolysis process, increasing the safety current during electrolysis and improving the efficiency during electrolysis are achieved. The technology has great significance in the application of industrial acid production, alkali production, hydrogen production, oxygen production and hydrogen peroxide production.

Compositions and methods for inhibiting corrosion of metals in contact with aqueous systems are provided. For example, a corrosion inhibitor composition of an embodiment of the present invention may include an oxyanion of an amphoteric material, a silicate, and an additional component. The corrosion inhibitor may be substantially phosphate-free or phosphorus-free. The additional component may include, for example, a hydroxycarboxylic acid.

An analytical process, which preferably is a one-step process, for detecting in a sample peroxide-based explosives, and / or nitrate-based explosives, the process comprising contacting a sample suspected of containing a peroxide-based compound, especially a peroxide-based explosive, or a nitrate salt, especially a nitrate-based explosive, with a composition comprising a Ni-porphyrin, an acid and preferably an acid-stable solvent.

This invention provides a method and application for in-situ construction of barium titanate piezoelectric nanozymes based on mesoporous silica. Mesoporous silica (MSNs) is used as a carrier, titanium acetylacetonate as the titanium source, barium chloride as the barium source, and ferric chloride hexahydrate as the iron source. After stirring for 24 h and then gradient calcination for 6 h, iron-doped barium titanate piezoelectric nanozymes grown in situ within the pores of MSNs are synthesized. The prepared material exhibits piezoelectric catalytic activity, capable of converting endogenous H2O in tumor cells into hydroxyl radicals (•OH) and O2 into superoxide anions (•O2) under ultrasonic stimulation. ‑ It also possesses peroxidase-like (POD) and superoxide dismutase-like (SOD) activities, and can utilize SOD-like activity to convert •O2 ‑ The process involves converting the generated H2O2 into H2O2, alleviating the H2O2 deficiency within the tumor microenvironment. Then, utilizing POD-like activity, the generated H2O2 and endogenous tumor-derived H2O2 are converted into •OH, achieving a piezoelectric catalysis and enzyme cascade reaction to further increase the •OH level, efficiently killing tumor cells and inducing tumor cell death. This strategy allows for the in-situ development of iron-doped barium titanate piezoelectric nanozymes that simultaneously achieve sonodynamic catalytic therapeutic performance and enzyme catalytic therapeutic performance within the channels of MSNs.

An organic compound, a solar cell, and an application thereof. The organic compound is represented by formula (1), where Ar is selected from any one of a substituted or unsubstituted aromatic group having 6 to 50 ring-forming atoms, a substituted or unsubstituted heteroaromatic group having 5 to 50 ring-forming atoms, a group represented by formula (A), and a group represented by formula (B); Ar′ is selected from any one of a substituted or unsubstituted aryl group having 6 to 30 ring-forming atoms and a substituted or unsubstituted heteroaryl group having 5 to 30 ring-forming atoms; L is selected from chain alkylene groups having 1 to 10 carbon atoms; R1 is an oxyacid group; n1 is any integer selected from 1 to 3; and m1 is any integer selected from 1 to 10. Alternatively, the organic compound is an oxyanion salt of a compound represented by formula (1).

Disclosed is a method of providing corrosion protection to an anodized metal including providing a metal having an anodization layer wherein the anodization layer includes a barrier portion; contacting the anodization layer with a first solution at a first temperature to seal the barrier portion; and contacting the anodization layer with the sealed barrier portion with a second solution at a second temperature to deposit a precipitated rare earth compound in the anodization layer with the sealed barrier portion; wherein the first solution includes a transition metal oxyanion and has a pH of 3 to 6 and the second solution includes a trivalent rare earth cation.

The application discloses an iridium complex and a preparation method and application thereof, and the iridium complex comprises a structure shown in the following formula: wherein X ‑ represents an anion. The compound of the application scheme has a spontaneous light emitting characteristic in an alkaline environment, can generate superoxide anions and singlet oxygen, and has catalytic oxidation ability on NADH / NADPH in tumor cells. The complex has good proliferation inhibition ability (IC 50 50 of 3.67 muM) on human non-small cell lung cancer cell lines (A549) under normal oxygen conditions, and also has proliferation inhibition ability (IC 50 50 of 6.85 muM) under anoxic conditions, which has important significance for researching the anti-tumor of the spontaneous light emitting metal iridium complex and provides a new idea for developing the photodynamic therapy of deep tumors in the clinic. In the complex of the application scheme, the donor and the acceptor are covalently attached, the covalent interaction is more stable, and the distance is closer, and therefore, higher transfer efficiency can be achieved.

The present invention provides for the use of a metal-organic framework (MOF) in removing particular chemical species or compounds, in particular oxy-anions of iodate, from a liquid or liquid stream. In some embodiments, the MOF is a Zr-based MOF, such as NU-1000 or MOF-808. The Zr-based MOF, including NU-1000 or MOF-808 can be used to remove these oxy-anions from various liquid streams or liquids in industrial processes such as a nuclear and fossil fuel power plants.

Compounds comprising an oxyanion azide-benzaldehyde acetal acid-degradable lipid are incorporated in lipid nanoparticle (LNP) and used to transfect cells.

The application relates to the technical field of composite heterojunction materials, and discloses a metal / semiconductor / multimetallic oxyacid salt heterojunction micro-nano material, a preparation method and application, the chemical expression of the micro-nano material is A / A x O / A y (BO z ) m (OH) n , and the micro-nano material is a two-dimensional nanosheet structure. The preparation method comprises the following steps: placing metal A electrodes on both sides of a reaction container, placing metal B target material in the center of the reaction container, injecting deionized water into the reaction container and submerging the surface of the metal B target material, performing liquid-phase laser ablation reaction on the metal B target material under the induction of an electric field, collecting the metal A electrodes after reaction into a new container, and standing for more than 2 weeks until two-dimensional nanosheet material grows on the surface of the metal A electrodes, the two-dimensional nanosheet material is A / A x O / A y (BO z ) m (OH) n micro-nano material and the like. The method is simple and convenient to operate, and can obtain A / A x O / A y (BO z ) m (OH) n multistage heterojunction nano structure with excellent electrolytic water performance without any complex chemical additives and reaction steps.

The invention relates to a preparation method and application of a three-dimensional porous photo-thermal material based on polyoxometallate dominated hydrophilic-hydrophobic modification, polyoxometallate and aniline are dissolved in a solvent system and uniformly mixed, then the obtained solution is uniformly poured on a melamine foam substrate, after full dipping, a solvothermal reaction is performed in a reaction kettle, and the three-dimensional porous photo-thermal material is obtained. And after the reaction is finished, washing and drying to obtain the polyoxometallate dominated self-assembly modified three-dimensional porous photo-thermal material. The method has the advantages that the polyoxometallate-dominated self-assembly modified three-dimensional porous photo-thermal material, photo-thermal site construction and surface hydrophobic modification are perfectly fused, efficient coating and hydrophobic modification of the three-dimensional porous adsorbent surface photo-thermal material are achieved, and meanwhile solar steam generation and crude oil recovery are achieved.

The invention discloses a dimer type Aza-BODIPY based molecule NBDP-Fc and a preparation method thereof, and the dimer type Aza-BODIPY based molecule NBDP-Fc is prepared by coupling an Aza-BODIPY derivative NBDP and 1, 1 '-ferrocenedicarboxylic acid through an esterification reaction under the protection of nitrogen and the action of EDCI / DMAP. The NBDP-Fc molecule disclosed by the invention has relatively strong near-infrared absorption and near-infrared two-region fluorescence, and can be used for in-vivo near-infrared two-region fluorescence imaging; wherein the ferrocene unit can catalyze overexpressed hydrogen peroxide in tumors to generate hydroxyl radicals, so that chemical kinetic treatment is realized; under the irradiation of 808nm laser, the NBDP-Fc nanoparticles show good I-type reactive oxygen species-superoxide anion generation efficiency and photothermal conversion efficiency as high as 45.6%, and the induced local heat effect not only can directly ablate tumors at high temperature, but also can accelerate the Fenton reaction rate and further enhance chemical kinetics therapy; the NBDP-Fc nanoparticles can be used for accurate and efficient near-infrared two-region fluorescence imaging mediated chemical kinetics, I-type photodynamic and photo-thermal combined treatment of deep tumor tissues, and the treatment efficiency and accuracy are improved.

A method of 3D concrete printing, comprises the steps of providing a set- delayed flowable construction material, conveying the construction material to a deposition head, placing the construction material through an outlet of the deposition head in order to form a layer of construction material, before placing the construction material, incorporating into the set-delayed construction material a setting accelerator agent selected from the group of SA-1), which is a setting accelerator comprising a water-soluble silicate source, SA-2), which is a setting accelerator comprising a source of aluminum ions, SA-3), wherein both of setting accelerator agents SA-1) and SA-2) are separately incorporated into the set-delayed construction material, wherein the set control agent comprises (i) a retarder comprising (i-a) an α-hydroxy monocarboxylic acid or a salt thereof, and, optionally, (i-b) a polycarboxylic acid having a carboxylic acid equivalent weight of 333 or less, or a salt thereof; and (ii) an oxyanion source selected from a borate source, a carbonate source, the carbonate source having an aqueous solubility of 15.0 g·L-1 or more at 25 °C, and mixtures thereof; wherein the weight ratio of (ii) to (i) is in the range of from 1.2 : 25, and wherein in the construction material the ratio of the dosage of the set control agent to the dosage of the setting accelerator agent is determined by the following inequation (1): 3 ≤ Dosage set control agent / (1 / 3.5 * Dosage SiO2 + 2.5 / 3.5 * Dosage Al) ≤ 42.0.

A compound having the following structure:wherein: R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from (i) hydrogen atom, (ii) hydrocarbon groups (R) containing 1-30 carbon atoms and optionally substituted with one or more fluorine atoms, (iii) —OR′ groups, (iv) —NR′2 groups, (v) —C(O)R′ groups, and (vi) halogen atoms, wherein R′ groups are independently selected from R groups and hydrogen atoms, and wherein the R group optionally includes a C(O), ether, or amino linkage; Xm− is an anionic species with a magnitude of charge m, where m is an integer of at least 1; and n is a number, provided that n×m=1. Also described herein are methods for removing one or more oxyanions from a liquid source by use of the above compound or mono-pyridyl derivative thereof.