125 results about "Redox Activity" patented technology

A preparation method based on simultaneous package of a target substance and synthesis of MOFs with redox activity, wherein methylene blue is selected as an organic target molecule, the methylene blue is packaged in the MOFs when the MOFs are synthesized by using a one-pot method to obtain ZIF-8 modified by the methylene blue. The drawback that above-mentioned MOFs material does not have electrical conductivity is overcome, the method is simple, rapid and low in cost, and the prepared product can accurately, sensitively, simply and quickly detect dopamine, and a new development direction is provided for researches in the fields of biological detection and chemical analysis, etc.

The invention discloses a manufacturing method for a redox activity electrolyte based nitrogen-doped graphene supercapacitor, and specifically discloses manufacturing methods for a pseudocapacitance active water system electrolyte, nitrogen-doped porous graphene and a pseudocapacitance active electrolyte system supercapacitor. The capacitive performance of the supercapacitor is greatly improved mainly through the dual-capacitive contribution of electrode materials and the electrolyte. The specific capacity of the supercapacitor is improved by about three times through the pseudocapacitance contribution of the redox activity ingredients in the electrolyte, so that the great improvement potential exists in supercapacitor specific capacity and the energy density.

The present invention provides a method for determining the gender of an unborn child by assaying the overall reducing / oxidizing or redox activity of the maternal urine or other body fluid. The method can be used to determine fetal gender at any time point during the entire pregnancy, the earliest being the first day of a missed menstruation. The body fluid may be processed before assaying. Processing may involve aging the body fluid, or purification of various fractions. The methods of the present invention also provide for a means for pre-conception baby gender planning by assaying the overall redox activity of a non-pregnant female's urine or other body fluid. The overall redox activity of a urine sample correlates with the gender specific compatibility of the ovum being released during a particular menstrual cycle. Therefore, assaying the overall redox activity of a non-pregnant female's urine will help a couple conceive a baby having a desired gender.

The invention provides a preparation method for a composite carbon based nano zero-valent iron micro electrolysis material and a method for treating antimony-contained wastewater. The composite carbonbased nano zero-valent iron micro electrolysis material provided by the invention is a micro electrolysis material which takes an element carbon as a carrier, is loaded with nano zero-valent iron, and is doped with an element copper as auxiliaries, wherein the metal element is covered by the element carbon. The material has relatively high redox potential difference of the micro electrolysis material, an over-sized specific surface area of a mesoporous material, excellent redox activity and excellent performances of the nano material. The composite carbon based nano zero-valent iron micro electrolysis material provided by the invention is low in preparation cost, is high in efficiency of treating antimony-contained wastewater, is simple in operation method and is very suitable for adsorbing pollutants in an environment water sample.

Provided is a method of preparing electroactive molecule grafted graphene doped conductive polymer electrode materials, comprising: adding a conductive polymer monomer into an electroactive graphene aqueous solution, uniformly mixing and then adding an oxidizing agent, and reacting for 6-24 hours under the stirring condition of -10 DEG C-30 DEG C to obtain electroactive graphene doped conductive polymer electrode materials. The method utilizes the oxygen-containing functional group on the surface of electroactive graphene and electroactive molecules grafted on the surface to perform in-situ doping on a conductive polymer. The anthraquinones electroactive molecules grafted on the graphene surface endow grapheme with good redox activity and dispersity, widen a grapheme potential window, and ensure high conductivity and stability of the conductive polymer after being doped to the conductive polymer. The electroactive molecule grafted graphene doped conductive polymer electrode materials have high energy density and circulating stability as super capacitor electrode materials.

The invention relates to a positive electrode of a zinc bromine redox flow battery and a preparation method thereof. The positive electrode comprises a carbon-plastic composite panel, and a catalyst layer which has high specific surface area, is adhered to one side surface of the carbon-plastic composite panel, and consists of a binder, namely chlorinated polypropylene or chlorinated polyethylene, a catalyst, namely activated carbon or carbon-supported metal, and a conductive agent, namely conductive graphite or carbon black. The catalyst layer with the high specific surface area is coated or bonded on a thermoplastic conductive plate made of polypropylene, polyethylene and the like, and high specific surface area and high conductivity are achieved simultaneously, so that the redox activity of positive bromine and the conductivity of the integral positive electrode are improved. Problems of overlarge electrode thickness, battery performance difference caused by carbon felt difference, and the like when the conventional carbon felt electrode is used are solved, and the novel positive electrode of the zinc bromine flow battery can replace the conventional carbon felt electrode.

The invention provides an oral dosage form for the anti-cancer drug picoplatin comprising a core and a coating, the dosage form being free of redox-active metal salts. The core of the tablet is a substantially dry powder comprising about 10 to 60 wt % picoplatin wherein the picoplatin is a particulate of less than about 10 microns average particle diameter, about 40-80 wt % of a filler comprising a substantially water-soluble, water-dispersible, or water-absorbing carbohydrate, and an effective amount of up to about 5 wt % of a lubricant. The dosage form can further include a dispersant.

The invention is concerned with a method to get Titanium Oxide film with low temperature. Prepare Titanium Oxide sol in Sol-gel method, select titanium isopropylate as precursor, and spread the sol on substrate. Dry the substrate for some time or use it at first hand, heat to 90 to 200 degree with high frequency electric field microwave to form Titanium Oxide film with photo-catalysis activity. For the low heating temperature, the Titanium Oxide film can be prepared on the stuff without thermal stability, such as paper, cloth and plastic, and the film has stronger redox activity. It saves energy and prepared time to enhance the film quality quickly and efficiently. The film has high photocatalytic activity without cap.

The invention discloses the technology of a fuel cell catalyst carrier with high stability suitable for dynamic conditions, and belongs to the technical field of fuel cells. A commercial carbon nanotube with the length of 0.5 to 15mu m and the diameter of 8 to 100nm is pretreated, and then active ingredients are supported on the pretreated carbon nanotube, wherein the content of the active ingredients is 0.5 to 90 percent, and the particle size of the active ingredients is 1 to 3nm. The prepared carbon nanotube-supported platinum catalyst has high stability and redox activity, wherein the stability and the redox activity of the catalyst prepared by taking the carbon nanotube with the length of 0.5 to 2mu m and the diameter of 10 to 20nm as the carrier are highest. The carrier can be applied as a carrier of a catalyst in a proton exchange membrane fuel cell.

The invention discloses an electrochromic assembly, a shell and electronic equipment. The electrochromic assembly comprises: a first flexible substrate and a second flexible substrate which are oppositely arranged; an electrochromic layer which is sealed between the first flexible substrate and the second flexible substrate; the electrochromic layer comprises a flexible polymer base material, an electrochromic active substance, a redox active substance and a conductive agent are arranged in the flexible polymer base material, the side, facing the electrochromic layer, of the first flexible substrate is provided with a first electrode layer, and the side, away from the electrochromic layer, of the first flexible substrate is provided with a first waterproof film layer; the side, facing theelectrochromic layer, of the second flexible substrate is provided with a second electrode layer, and the side, away from the electrochromic layer, of the second flexible substrate is provided with asecond waterproof film layer. According to the electrochromic assembly, electrochromism can be achieved through a single-layer structure, flexible packaging can be easily achieved, color changing response is fast, packaging is reliable, and the electrochromic assembly is suitable for being attached to a shell with a certain curved surface.

A problem to be solved by the invention is to provide a production method of a nitrogen-containing carbon alloy that has sufficiently high redox activity or has a large number of reaction electrons of redox reaction. A method for producing a nitrogen-containing carbon alloy comprising baking a precursor containing a nitrogen-containing organic compound and an inorganic metal salt containing one or more kinds of Fe, Co, Ni, Mn and Cr, wherein: the precursor satisfies one of the requirements (a) and (b) below, and, the nitrogen-containing organic compound is one of a compound represented by the formula (1) below, a tautomer of the compound, and a salt and hydrate thereof: (a) the precursor contains the inorganic metal salt in an amount exceeding 45% by mass based on the total amount of the nitrogen-containing organic compound and the inorganic metal salt of the precursor, in which the total amount includes the mass of hydrated water in the nitrogen-containing organic compound and the inorganic metal salt, and the amount of the inorganic metal salt includes the mass of hydrated water in the inorganic metal, (b) the precursor further contains a β-diketone metal complex:

The invention relates to a surface modification process of a graphite felt material. Graphite felt is heated under reflux in an absolute ethanol environment, thereby implementing the material surface modification under the condition of low annealing temperature and implementing the in-situ loading process of carbon nanoparticles. The method provided by the invention can effectively enhance the specific area of the felt material, increase the surface reactive spots and improve the surface hydrophilicity of the material. When being applied to the electro-Fenton system, the material can effectively enhance the electrocatalytic redox activity of the material, and effectively enhance the capacity for removing organic pollutants in the electro-Fenton system. The method provided by the invention is simple to operate, has low facility request, and thus, has wide application prospects.

The invention relates to a fuel cell catalyst, and concretely relates to an application of a novel non-noble metal catalyst in fuel cells. The catalyst comprises resorcinol, formaldehyde, a metal salt and 2-(2-pyridyl)-benzimidazole (C12H4N3). A molar ratio of resorcinol to formaldehyde is 1:5-5:1, and a molar ratio of the metal salt (by metal) to 2-(2-pyridyl)benzimidazole is 1:10-10:1. A highly active non-platinum catalyst is prepared through the steps of carbonizing an organogel in 500-1200DEG C inert gas environment to prepare a carbon gel, dipping a metal organic complex (prepared through coordinating the metal salt with 2-(2-pyridyl)benzimidazole), and pyrolyzing in 500-1200DEG C nitridation atmosphere environment. The non-noble metal catalyst has good redox activity and electrochemical stability in a flue cell cathode catalyst as a nonmetal catalyst.

The invention provides an electrochemical CO2 capture device and methods employing proton-coupled redox active species, e.g., a quinone, phenazine, alloxazine, isoalloxazine, or polyoxometalate, whose protonation and deprotonation can be controlled electrochemically to modify the pH of an aqueous solution or aqueous suspension. This change in pH can be used to sequester and release CO2. The CO2 capture device can be used to sequester gaseous CO2 from a point source, such as flue gas, or from ambient air.

The present invention provides an apparatus for producing water having redox activity. In the apparatus, at least one of oxygen, ozone, chlorine, nitrogen monoxide, and ammonia as a reaction precursor is previously mixed into water or running water while regulating the concentration of the dissolved substance followed by the application of ultrasonic vibrations, whereby active oxygen species are generated in water. In another embodiment, water or running water is brought into contact with a catalyst to which ultrasonic vibrations or electromagnetic waves have been applied, whereby active oxygen species are generated in water.

Electrochromic module including first and second substrates is provided in which the first and / or second substrate are / is electrically conductive or are / is equipped with an electrically conductive coating. A first electrochromic polymer coating is arranged on the first substrate or the conductive coating, an ion-storage or charge-compensating layer is arranged on the second substrate or the conductive coating, and a polymer gel electrolyte is disposed between the electrochromic coating and the ion-storage or charge-compensating layer. The electrochromic polymer, a polymer of tetraarylbenzidine and (hetero)aromatic diol, is colourless in one redox state and colored in at least two redox states. The ion-storage or charge-compensating layer is formed from material selected from the group comprising cerium oxide, titanium oxide, tungsten oxide, nickel oxide, molybdenum oxide, vanadium oxide and mixtures thereof or redox-active polymer. The inventive modules achieve a large number of switching cycles, a high electrochromic contrast and a high electrochromic efficiency.

Monolayer protected nanoclusters (MPCs) are described herein. The MPCs contain a cluster of atoms or molecules (e.g. core) having bound thereto a plurality of ligands (e.g., monolayer). The ligands can be bound covalently or semi-covalently bound to the cluster. The ligands are generally in the form of a monolayer or mixed monolayer. The monolayer or mixed monolayer contains a plurality of ligands. In one embodiment, the monolayer and / or mixed monolayer contains 1,4-dithiolate ligands. The MPCs described herein exhibit improved quantum efficiency allowing for single cluster emissions to be measured. Moreover, some embodiments of the MPCs described herein exhibit enhanced redox activity, including the ability to transfer a plurality of electrons, i.e., up to about 19 or up to about 30 electrons under controlled conditions, while displaying improved overall chemical stability. Such behavior can be utilized in catalysis and nanoelectronics applications.

Rapid, reversible redox activity may be accomplished at significantly reduced temperatures, as low as about 200° C., from epitaxially stabilized, oxygen vacancy ordered SrCoO2.5 and thermodynamically unfavorable perovskite SrCoO3-δ. The fast, low temperature redox activity in SrCoO3-δ may be attributed to a small Gibbs free energy difference between the two topotactic phases. Epitaxially stabilized thin films of strontium cobaltite provide a catalyst adapted to rapidly transition between oxidation states at substantially low temperatures. Methods of transitioning a strontium cobaltite catalyst from a first oxidation state to a second oxidation state are described.

The invention belongs to the field of modified carbon nanomaterials and discloses a preparation method of a two-dimensional porous boron-nitrogen double-doping carbon nanomaterial and application thereof. The preparation method disclosed by the invention comprises the following steps: taking urea as a structure template, taking 1-butyl-3-methylimidazolium tetrafluoroborate as a pore forming substance and a doping agent, taking glucose as a carbon source, calcining and performing hydrothermal treatment, thereby obtaining the product. The method disclosed by the invention is simple in operation,short in synthesis period, excellent in repeatability, low in cost and convenient for industrial implementation. The porous boron-nitrogen double-doping carbon nanosheets prepared by the method disclosed by the invention have a uniform and porous thin-layer structure and large specific surface area. Meanwhile, due to introduction of boron atoms, the conductivity is enhanced, the redox activity can be enhanced by virtue of doping of the nitrogen, and ay capacitance is improved. When serving as an electrode material of a supercapacitor, the carbon nanomaterial has high electrochemical energy storage activities including high specific capacitance and excellent cycling stability. When charging / discharging current density is 0.1A / g, the highest specific capacitance can reach 550F / g, and the specific capacitance is much higher than that of most of the carbon-based materials.

The invention discloses polymer gel electrolyte modified by functionalized graphene oxide, and a preparation method and application of the same. The functionalized graphene oxide is formed by the connection of a redox active substance with graphene oxide through the intermolecular forces between hydrogen bonds, the chemical bond acting force among ether bonds, ester bonds or amido bonds and the pi-pi stacking intermolecular forces. A multi-stage interlayer structure is a gap structure which is formed among a polyhydroxy high-molecular polymer layer, a redox active substance layer and a graphene oxide layer, and provides a short conveying channel for electrolyte ions. The electrolyte is used for a supercapacitor, has the high ionic conductivity and redox activity, and improves the specific capacitance.

The invention discloses a temperature-sensitive tag and application thereof, and belongs to the technical field of temperature monitoring. The tag comprises an electrochromic electrode, a counter electrode and an electrolyte layer arranged between the electrochromic electrode and the counter electrode. The electrochromic electrode has redox activity and can display different colors at different voltages. The electrolyte layer contains an electrolyte with an ionic conduction function. When applied to cold-chain logistics, the temperature-sensitive tag is pasted on the surface of an article needing temperature monitoring. The temperature-sensitive tag is reliable in recording effect, controllable in temperature response, low in cost and suitable for the cold-chain logistics industry.

The invention discloses a method for rapidly preparing a polymelamine conductive polymer electrode and an application thereof. The melamine conductive polymer electrode can be rapidly prepared under the condition of solid state electrochemical polymerization and by taking melamine as a monomer, water as a solvent, and glassy carbon as a working electrode. A polymelamine conductive polymer film with redox activity is obtained on the surface of the electrode. Cyclic voltammetry testing is carried out on the polymelamine conductive polymer electrode in solutions with different pH to obtain a series of redox peaks, and pH values of the solutions can be detected according to the relationship between the pH value of the solution and the oxidation peak potential value. The method has the advantages of being green, controllable, simple in operation, and the like, can be used for quantitative detection of the pH values in water samples, and is rapid and accurate in detection.

The semi-electroactive material of the invention includes a self-sustained polymer matrix in which is inserted an electroactive system including or made of: at least one electroactive organic compoundcapable of oxidation and / ejecting electrons and cations serving as compensation charges; or at least one electroactive organic compound capable of reduction and / or accepting electrons and cations serving as compensation charges; and ionic charges; and a liquid for solubilizing said semi-electroactive system, wherein said liquid does not solubilize the self-sustained polymer matrix, the latter being selected so as to provide a percolation path for the ionic charges, which results, upon the application of a dielectric current, in oxidation and reduction reactions of said electroactive organic compounds which are necessary for obtaining a colour contrast.

A propagation monomer having the formula P-L-N, wherein: P is a moiety which has redox activity, optical activity, electronic activity, or magnetic activity; N is a cyclic olefin-containing group; L is a bond or linker whereby N is attached to P. The monomers are useful in a method of detecting or quantitating an analyte comprising contacting the analyte with a type of binding monomers having the formula N-L-B wherein: N is a cyclic olefin-containing group; B is a binding moiety that binds specifically to the analyte; and L is a bond or a linker whereby N is attached to B; so that the binding monomers bind to the analyte, and then adding the propagation monomers so that the propagation monomers polymerize to form a polymer attached to the analyte. The properties of the polymer attached to the analyte can be detected or measured in order to detect or quantitate the analyte.

The present invention relates to a capacitor battery comprising a positive electrode, a negative electrode, and a diaphragm disposed between the positive and negative electrodes and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode material applied on the current collector, and the positive electrode material includes a positive electrode active material, a binder and a conductive agent, wherein the positive electrode active material includes a mixture of carbon and sulfur or sulfide with redox activity. The negative electrode comprises a negative electrode current collector and a negative electrode material applied on the negative electrode current collector, wherein the negative electrode material comprises a negative electrode active material, a conductive agent and a binder, the negative electrode active material is one or more material in the group consisting of a compound of hard carbon, graphite and silicon carbon anda mixture of the compound and lithium, and the electrolyte contains a sulfur-containing additive. According to the above capacitor battery, active components with redox reaction are added in the positive electrode and the electrolyte, the capacitor battery has the advantages of high specific energy, high working voltage, high power output, high safety and low cost, and the invention further provides a preparation method of the capacitor battery.

The invention belongs to the field of new energy, and relates to an aqueous flow battery, in particular to an alkaline aqueous mixed flow battery based on an electroactive phenazine derivative negative electrode. A negative electrode of the alkaline aqueous mixed flow battery is an insoluble phenazine derivative with redox activity, a supporting electrolyte of the negative electrode is strong base, a diaphragm is an ion conductive membrane, a positive electrode active electrolyte is ferrocyanide, and a positive electrode is a carbon-based conductive material. The aqueous mixed flow battery hasthe advantages of low unit cost, long cycle life, high specific capacity, safety, environmental protection and the like, and has a wide application prospect in the fields of large-scale power storageof renewable energy and peak regulation of a power grid.