64 results about "Diamond electrodes" patented technology

The invention is suitable for the field of metal matrix composite materials, and provides a copper-tungsten boron-containing diamond electric resistance welding electrode and a preparation method thereof, and the electrode material is composed of a copper phase, a tungsten phase and boron-containing diamond powder; the preparation method comprises the following steps: carrying out step-by-step metallization treatment of chemical copper plating and magnetron sputtering nickel on boron-containing diamond powder; the boron-containing diamond powder with the metalized surface and tungsten powder are mixed, subjected to ball milling and then subjected to cold isostatic pressing forming, and a tungsten prefabricated body is obtained; sintering the tungsten preform in a hydrogen or vacuum environment to form a porous tungsten skeleton; and filling pores of the tungsten skeleton through copper infiltration to obtain the copper-tungsten boron-containing diamond electrode material, and finally processing and forming. Through introduction of the conductive boron-containing diamond and a step-by-step metallization process, the contradiction between the conductivity and the wear resistance of a traditional electrode is broken through, meanwhile, the adhesion rate is remarkably reduced, and the method is suitable for welding high-strength steel, plated plates, copper alloys and other easy-adhesion working conditions.

The invention discloses a cleaning method of an electrolyzed water device, at least an anode of the electrolyzed water device adopts a conductive diamond electrode, the electrolyzed water device is used for manufacturing electrolyzed water spray with high oxidation potential, and if the absolute value of the oxidation potential value of the electrolyzed water spray is detected to be smaller than a preset oxidation potential early warning value, the electrolyzed water spray is cleaned. And if not, cleaning the surface of the electrode of the water electrolysis device by using an acidic aqueous solution. According to the invention, the water electrolysis device is maintained and cleaned by using the acidic aqueous solution, so that the defects that the high oxidation potential of instantly manufactured electrolyzed water is reduced and the biological functions of killing microorganisms, resisting inflammation and relieving itching of skin and the like are reduced due to long-time use of the water electrolysis device can be overcome, and the water electrolysis device has a relatively good commercial use value.

The utility model relates to the technical field of water treatment, in particular to a coking wastewater treatment system which comprises an electrocatalytic oxidation unit, and a nanofiltration unit, a reverse osmosis unit, a fluorine and silicon removal unit and an evaporative crystallization unit which are connected in sequence, the electrocatalytic oxidation unit is connected with the nanofiltration unit and the evaporative crystallization unit so as to respectively receive nanofiltration concentrated water and evaporative crystallization mother liquor, and the electrocatalytic oxidation unit is used for carrying out electrocatalytic oxidation treatment on the nanofiltration concentrated water and the evaporative crystallization mother liquor; and an anode of the electrocatalytic oxidation unit adopts a boron-doped diamond electrode. By adopting the boron-doped diamond electrode as the anode of the electrocatalytic oxidation unit, electrocatalytic oxidation treatment can be directly carried out on the nanofiltration concentrated water and the evaporative crystallization mother liquor, enrichment of the nanofiltration concentrated liquor and the evaporative crystallization mother liquor is avoided, the purity of industrial salt is improved, meanwhile, the treatment cost of the mother liquor as hazardous waste is avoided, and the salt recovery cost is reduced.

One embodiment provides a method for measuring the amount of total organic fluoride content of a PFAS-containing sample, the method comprising: placing a sample comprising a PFAS compound into a measurement device, where the measurement device comprises an oxidation pond and a non-oxidation pond, where the oxidation pond comprises a boron-doped diamond electrode; measuring the amount of total inorganic fluoride of the sample prior to oxidation using the measuring device; applying an electric potential to a portion of the sample in the oxidation pond, wherein the electric potential oxidizes the PFAS compound; measuring an amount of total organic fluoride of the sample after the oxidation using the measuring device to provide a measurement signal of the total organic fluoride; and determining a first derivative of the measurement signal of the total organic fluoride. Other aspects are described and claimed.

The invention relates to the technical field of electrode preparation, in particular to a diamond electrode and a preparation method thereof. The diamond electrode comprises a porous consolidation block formed by consolidating conductive diamond particles; the particle size of the conductive diamond particles is 0.3-10 mm; the conductive diamond particles comprise diamond particles or diamond particles with diamond coatings deposited on the surfaces; the diamond grains or the diamond coating are electrically conductive by doping elements. On the basis, a nano-diamond porous membrane is deposited on the surface of the porous consolidation block, and the thickness of the nano-diamond porous membrane is 1-20 microns. In addition, the invention further provides a preparation method of the diamond electrode. The diamond electrode provided by the invention has a high specific surface area, and can control pores in the electrode and enable the pores to be exposed in a working environment.

The utility model relates to a novel mobile phone shell structure, which comprises a shell, a fixed frame body, an elastic body, a circuit board, touch glass and a signal transmission interface, and is characterized in that the shell is provided with a key area, the key area is provided with an opening, the fixed frame body is clamped and fixed with the opening of the shell, the elastic body is filled in the fixed frame body, and a cavity is formed in the elastic body; the circuit board is arranged in an inner cavity of the elastic body, a capacitance sensing module and a pressure sensing module are integrated on the circuit board, the touch glass is fixed to the elastic body and located at the outer end of the shell, an ITO diamond electrode array is printed on the inner side of the touch glass, and the ITO diamond electrode array is bound to the circuit board through anisotropic conductive adhesive. The signal transmission interface is arranged at one end, far away from the touch glass, of the elastic body and is electrically connected with the circuit board for transmitting capacitance and pressure signals to the mobile phone, the composite operation of pressing and touch sliding of the original key of the mobile phone is reserved, and the possibility that the original key of the mobile phone is easily damaged by external force or invaded by liquid is reduced.

The application discloses a boron-doped diamond electrode medical sewage treatment device, and relates to the technical field of medical sewage treatment. The device comprises a sewage treatment chamber, a movable filter plate, a plurality of anode plates and cathode plates, a moving abutment, a pair of carding frames, and a cleaning and trapping assembly. The movable filter plate is elastically installed in the sewage treatment chamber. The moving abutment is installed in the sewage treatment chamber and is in abutting engagement with the top surface of the movable filter plate at both ends. The cleaning and trapping assembly and the flow disturbing assembly are installed between adjacent anode plates and cathode plates on the top of the moving abutment. The carding frames are slidably installed on the cleaning and trapping assembly and are lapped on the top surface of the movable filter plate. When the moving abutment moves, the flow disturbing assembly is driven to rotate. The movable filter plate and the moving abutment are linked together. The cleaning and trapping assembly and the flow disturbing assembly are integrated in the electrode array. Mechanical stripping and electrolytic oxidation of pollutants on the electrode plate are realized.

This product has an ozone water generating function using a diamond electrode. Tap water or the like poured into a container located at the bottom of the product is sucked up by an electric pump and ozone water is generated by passing it through the diamond electrode. This spray can continuously spray ozone water without waiting until the water in the container runs out.

The application provides a cold coke water treatment process and system. The cold coke water treatment process comprises the following steps: step one: after being collected by a coke storage pool, the cold coke water is filtered by a flat ceramic membrane to obtain concentrated coke water and dilute coke water, and the concentrated coke water is returned to the coke storage pool; step two: after being stored by a cold coke water tank, the dilute coke water is divided into dilute coke water I and dilute coke water II, the dilute coke water I is sequentially treated by a first-stage electro-catalytic oxidation unit, a second-stage electro-catalytic oxidation unit and a reverse osmosis unit to obtain purified water; and the dilute coke water II is used as cold coke water makeup water and recycled; the first-stage electro-catalytic oxidation unit is provided with an electro-catalytic oxidation reaction tank, the electro-catalytic oxidation reaction tank is provided with a cathode and an anode, the cathode is a titanium electrode, and the anode is a titanium-based metal oxide coating electrode; the second-stage electro-catalytic oxidation unit is provided with an electro-catalytic oxidation reaction tank, the electro-catalytic oxidation reaction tank is provided with a cathode and an anode, the cathode is a titanium electrode, and the anode is a boron-doped diamond electrode. The treatment process has good treatment effect and is environmentally friendly and economical.

The invention discloses an iridium oxide-doped diamond double-film electrode and a preparation method and application thereof. The doped diamond-iridium oxide coupling electrode comprises a substrate and an electrode working layer arranged on the surface of the substrate, the electrode working layer consists of an iridium oxide film layer and a doped diamond film layer, the iridium oxide film layer consists of an iridium oxide matrix and doped diamond particles uniformly dispersed in the iridium oxide matrix. The double-film electrode provided by the invention combines the advantages of an oxide coating electrode and a doped diamond electrode, has a heterojunction effect, and has good electrical conductivity, corrosion resistance and mechanical strength, and can be used for electrocatalytic wastewater degradation, chemical battery positive electrode lightweight plate grid, electrochemical synthesis, electrical signal detection and other related electrochemical fields.

The invention relates to the field of waste water treatment catalytic materials, in particular to a catalyst for treating organic matter through waste salt and a preparation method and application of the catalyst. The nitrogen-doped nano carbon layer grows on the surface of the titanium-based boron-doped diamond electrode; the zirconium oxide coated ferroferric oxide core-shell particles are loaded on the surface of the nitrogen-doped nano carbon layer; and the sulfonated polypyrrole-graphene oxide composite hydrogel is filled in gaps of the nitrogen-doped nano carbon layer. According to the invention, chlorine poisoning resisting confinement catalysis and electric drive enrichment are cooperated, so that a high-salt mass transfer barrier is broken through, and efficient degradation of organic matters is realized.

The present application discloses a diamond electrode and a method for preparing the same. The diamond electrode comprises a basket and conductive diamond particles. The basket is provided with holes, forming a mesh basket, wherein the holes have a diameter smaller than the diameter of the conductive diamond particles; the conductive diamond particles are placed within the basket. The method for preparing the diamond electrode comprises preparing the conductive diamond particles; preparing the basket; and placing the conductive diamond particles within the basket, wherein the basket defines the shape of the conductive diamond particles, thereby producing the diamond electrode. The advantage of the present application is that the diamond electrode provided herein has a large specific surface area, and its interior can be disassembled for cleaning. After cleaning, it can be reassembled for reuse without compromising performance.

The application relates to a kind of electrochemical oxidation synthesis ozone device and method based on patterning diamond, belong to electrochemistry technical field, device includes the first shell and second shell connected, the first shell is opened with reaction groove, water is passed to reaction groove in working process;Reaction groove is close to the side of water inlet and is provided with turbulence generator;Patterning diamond anode and patterning cathode are attached to the two sides of proton exchange membrane and constitute electrode group and are arranged in the reaction groove, parallel to the water inlet end and water outlet end of reaction groove and are connected to form straight line;The two sides of electrode group are pressed with metal current collector.The turbulence generator is water wheel or porous microstructure.The application can overcome the problems of poor mechanical strength of traditional through-hole diamond electrode and difficult water and gas transmission on the surface of electrode, while increasing the electrochemical active area of electrode, and thus improving the ozone concentration, reaction efficiency and operating life of the electrochemical oxidation synthesis ozone device.

The invention relates to the technical field of oil and gas fracturing flow-back fluid treatment, and particularly discloses a boron-doped diamond electrode electrooxidation system and method for treating fracturing flow-back fluid. According to the method for treating the fracturing flow-back fluid, before the fracturing flow-back fluid enters an electrooxidation unit, sulfide is efficiently removed, poison and competitive oxidation of the fracturing flow-back fluid to an electrode are eliminated, a BDD electrode is protected, a foaming agent is synchronously removed through aeration enrichment, the problem of foam interference in the flow-back fluid treatment process is fundamentally solved, and continuous and stable operation of a system is guaranteed; after the electro-oxidation unit, active chlorine (pypocholoride / chlorine) is effectively removed and recycled, so that waste is treated by waste, the oxidation efficiency is improved, and the dosage of chemicals is reduced. Through the collaborative design, the interference and foam problems of sulfide with high chloride ion content and strong reducibility are collaboratively optimized, and the treatment efficiency, economical efficiency and stability of the system are integrally improved.

The application discloses a kind of doped diamond-ruthenium oxide composite coating electrode preparation method and its application, including substrate and electrode working layer being arranged on the surface of substrate, the electrode working layer is double-layer film structure, from below to above, in order to doped diamond film layer and ruthenium oxide film layer, doped diamond particles are added in the ruthenium oxide film layer.This kind of composite coating electrode combines the advantages of oxide coating electrode and doped diamond electrode, while having heterojunction effect, with good conductivity, corrosion resistance and mechanical strength, can be used for electrocatalytic wastewater degradation, chemical battery positive light weight grid, electrochemical synthesis, electric signal detection, tail gas treatment and other related electrochemical fields.

The present invention provides a method for treating wastewater after textile printing and dyeing, which comprises the following steps: after the printing and dyeing wastewater is pretreated by a grid and flotation, it enters a micro-nano bubble enhanced coagulation reactor, and after a mixing reaction, it is precipitated and separated; the coagulation sedimentation effluent enters an electrocatalytic-ozone coupled oxidation system, and is electrocatalytically oxidized under the action of a titanium-based boron-doped diamond electrode, while ozone is introduced for reaction; the electrocatalytic-ozone oxidation effluent enters a bioenzyme enhanced degradation system, laccase and peroxidase are added to an anaerobic granular sludge reactor, and oxidoreductase and hydrolase are added to a membrane bioreactor; the membrane bioreactor effluent enters a multifunctional enzyme immobilized photocatalytic self-repairing membrane system; the clean water after treatment by the multifunctional enzyme immobilized photocatalytic self-repairing membrane system is returned to the production line as recycled water. The present invention achieves efficient removal of new pollutants in printing and dyeing wastewater and long-term stable operation of the membrane.

A method of electrochemical oxidation of per - and polyfluoroalkyl substances, PFAS, in a solution. The method comprises providing an electrochemical reactor 1, the electrochemical reactor comprising at least one boron-doped diamond (BDD) electrode 2,3. The PFAS-containing solution is passed over the boron-doped diamond electrode. The electrochemical reactor 1 is operated at a temperature of at least 100°C, via a heater 9, a pressure of at least 5 bar, and an electrode current density of at least 1000 Am-2. The conductivity of the solution may be at least 5000µScm-1. The boron-doped diamond electrode may have an erosion gradient of less than 0.0025nmh-1 Am2.

The invention discloses a platinum-loaded boron-doped diamond electrode, which is characterized in that monocrystalline silicon is pretreated by using a diamond grinding liquid to obtain seeded monocrystalline silicon, and the seeded monocrystalline silicon is used as a substrate to prepare a boron-doped diamond film electrode by using a hot filament chemical vapor deposition method; then loading platinum by using an atomic layer deposition method, then putting into an acidic electrolyte, connecting an electrochemical workstation by using a standard three-electrode system, and carrying out cyclic voltammetry scanning to obtain a platinum-loaded boron-doped diamond electrode; the potential window of the boron-doped diamond film electrode is remarkably improved, the background current is reduced, and the boron-doped diamond film electrode has wide application prospects in the fields of electrocatalysis, electrochemical sensing, advanced oxidation and the like.

A diamond electrode is provided with a rod-shaped conductive diamond member and a rod-shaped metal member electrically connected to the conductive diamond member, and the diamond content of the conductive diamond member is 80 vol% or more.

This invention belongs to the field of conductive diamond electrode material preparation technology, specifically relating to diamond electrode material deposition equipment, diamond electrode materials, and their preparation methods. The deposition equipment includes a drum and a heating element. The drum has openings at both ends, and the heating element is located inside the drum and extends from the openings. The heating element is positioned between the central axis of the drum and the inner wall of the drum. One end of the drum has a first mounting base with a first through hole, the center of which is located on the central axis of the drum. A tubular or rod-shaped electrode substrate is fixed inside the drum cavity through the first through hole, and a particle electrode substrate is laid on the inner wall of the drum, thereby achieving simultaneous deposition of BDD films on both the tubular or rod-shaped electrode substrate and the particle electrode substrate. As the drum rotates, the BDD film deposition on the surfaces of both the tubular or rod-shaped electrode substrate and the particle electrode substrate becomes uniform.

The invention relates to the technical field of electrochemical electrode materials, in particular to a ceramic-based composite boron-doped diamond electrode and a preparation method thereof. The boron-doped diamond electrode comprises a diamond ceramic matrix layer and a boron-doped diamond functional layer, the diamond ceramic matrix layer comprises diamond particles, non-oxide ceramic powder and a conductive additive. The ceramic-based composite boron-doped diamond electrode can effectively solve the problems that an existing BDD electrode is poor in bonding stability, short in service life and low in electrochemical efficiency, and the ceramic-based composite boron-doped diamond electrode integrates high bonding force, large thickness adaptability, low resistivity and high mechanical strength.

The utility model provides a boron-doped diamond electrocatalytic oxidation small-scale test device which comprises a machine box, a power supply display panel is embedded in the front side wall of the machine box, a current adjusting knob, a voltage adjusting knob and a power supply output button are arranged on the power supply display panel, a junction box is embedded in the rear side wall of the machine box, and a power supply output button is arranged on the junction box. A positive terminal and a negative terminal are embedded in the front side wall of the junction box, a stirring box is arranged at the corner of the right front end of the machine box, a magnetic stirrer is arranged in the stirring box, a beaker is arranged at the top of the magnetic stirrer, a boron-doped diamond electrode module is arranged at the top of the beaker, and a boron-doped diamond electrode module is arranged at the bottom of the boron-doped diamond electrode module. The special structure integrating the boron-doped diamond beaker module, the power supply and the stirrer has the advantages of being small in size, light in weight, convenient to carry and the like, and meanwhile the functional requirements of a small-scale test device are met.

The invention discloses a boron-doped diamond electrode of a three-dimensional interpenetrating network structure and a preparation method and application of the boron-doped diamond electrode. The boron-doped diamond electrode comprises a titanium substrate of the three-dimensional interpenetrating network structure and a boron-doped diamond film arranged on the surface of a titanium substrate framework. The titanium substrate is formed by laminating N layers of titanium meshes, the layers are staggered and communicated, and the titanium substrate is provided with graded pores, a sintered multilayer titanium mesh is used as a three-dimensional skeleton, and a high-quality boron-doped diamond film is grown on the surface of the sintered multilayer titanium mesh in situ, so that a macroscopic three-dimensional interpenetrating network and microscopic graded porous dual structure is formed; the specific surface area, the active site density and the mass transfer efficiency of the electrode are remarkably improved, so that the electrode shows excellent comprehensive performance in electrooxidation, electrosynthesis, electroanalysis, capacitors and other electrochemical applications, and the electrochemical reaction kinetics bottleneck of a traditional flat boron-doped diamond electrode is broken through.

This invention belongs to the field of biosensors and electrochemiluminescence (ECL) detection technology, and discloses an electrochemiluminescence sensor based on a UiO-67 confined single-site iridium complex, its construction method, and applications. The system uses zirconium-based metal-organic framework (MOF) material UiO-67 as a carrier, and iridium(III) bridging compounds are bonded through coordination to construct an in-situ Ir@UiO-67 nano-signal probe with high ECL activity. This probe is labeled with P-tau 181 secondary antibody to obtain an Ab2-Ir@UiO-67 complex. Simultaneously, a boron-doped diamond electrode modified with a gold film is used as the substrate electrode, and P-tau 181 primary antibody is immobilized to construct a specific recognition interface. A highly sensitive electrochemiluminescence sensing platform is then assembled via a sandwich immunoassay. This invention improves upon the bottleneck problems of poor water solubility and easy aggregation and quenching of traditional iridium complexes through MOF coordination anchoring and pore spatial confinement effects, achieving ultrasensitive quantitative detection of P-tau 181. It exhibits excellent specificity, reproducibility and stability in plasma samples.

The present invention discloses a doped diamond-ruthenium oxide coupling electrode and a preparation method and application thereof. The doped diamond-ruthenium oxide coupling electrode comprises a substrate and an electrode working layer arranged on the surface of the substrate. The electrode working layer is a double-layer film structure, which comprises a ruthenium oxide film layer and a doped diamond film layer from bottom to top, and doped diamond particles are added to the ruthenium oxide film layer. This coupling electrode combines the advantages of oxide-coated electrodes and doped diamond electrodes, and has a heterojunction effect, good electrical conductivity, corrosion resistance and mechanical strength, and can be used for electrocatalytic wastewater degradation, chemical battery positive electrode lightweight grid, electrochemical synthesis, electrical signal detection, tail gas treatment and other related electrochemical fields.

The utility model discloses a handheld boron-doped diamond electrode disinfector, which comprises a disinfector body and a water storage tank spirally connected to the bottom end of the disinfector body, the disinfector body comprises a shell and a support arranged in the shell, and a circulating pump body, a boron-doped diamond ozone generator, an ultrasonic spray head and a control circuit board are fixed on the support; spraying holes are formed in the upper part of the side surface of the shell; a water inlet pipe of the circulating pump body extends into the water storage tank, a water return pipe of the circulating pump body extends into an inlet of the boron-doped diamond ozone generator, and an outlet of the boron-doped diamond ozone generator is connected with the ultrasonic spray head through a guide pipe. The face moisturizing device is reasonable in structural arrangement, can perform disinfection operation, can spray disinfected water, can improve effectiveness, safety and reliability of face moisturizing, is small in structural size and convenient to hold and use, reduces processing cost, and improves use convenience.

The invention discloses a diamond electrode and a preparation method thereof.The diamond electrode comprises a surrounding basket and conductive diamond particles, holes are formed in the surrounding basket to form a net-shaped surrounding basket, and the hole diameter of the holes is smaller than the particle diameter of the conductive diamond particles; and the conductive diamond particles are placed in the enclosure basket. The preparation method of the diamond electrode comprises the following steps: preparing the conductive diamond particles; preparing a surrounding basket; and the conductive diamond particles are placed in a surrounding basket, the surrounding basket limits the stacking shape of the conductive diamond particles, and the diamond electrode is manufactured. The diamond electrode has the advantages that the diamond electrode has a large specific surface area, the interior of the diamond electrode can be detached for cleaning, the diamond electrode can be reused through installation after cleaning is completed, and the performance of the diamond electrode cannot be damaged.

The application discloses an electrode for electrochemical degradation of biomass wastewater and a preparation method and application thereof, and the preparation method of the electrode comprises the following steps: performing surface oxidation pretreatment on a planar boron-doped diamond electrode; adding a mixed solution of a metal salt and a precipitant into a reaction kettle to perform a hydrothermal reaction on the pretreated boron-doped diamond electrode, so that a metal layer is uniformly grown on the surface of the electrode; placing the metal / boron-doped diamond electrode into a tube furnace, introducing hydrogen gas, and performing high-temperature etching under the catalysis of the metal, so that a metal / porous boron-doped diamond electrode is obtained after cooling; and soaking the metal / porous boron-doped diamond electrode in strong acid to obtain a porous boron-doped diamond electrode. The planar boron-doped diamond electrode is used as a basis, a metal layer is grown on the surface of the boron-doped diamond electrode by using a hydrothermal method, and a porous boron-doped diamond electrode with excellent performance is prepared through high-temperature hydrogen etching technology, so that the active area of the electrode is effectively increased, the anodic oxidation efficiency is improved, and biomass chemical wastewater can be efficiently degraded.

A diamond electrode comprises: a conductive diamond element in rod form; and a metal element in rod form which is electrically connected to the conductive diamond element, wherein the diamond content of the conductive diamond element is 80 vol.% or more.