99results about How to "Improve activity stability" patented technology

The invention belongs to the technical field of bioengineering, and particularly discloses a chimeric enzyme for degrading PET (Polyethylene Terephthalate) as well as a related biological material and application of the chimeric enzyme. The chimeric enzyme for degrading PET provided by the invention is obtained by replacing at least one fragment in an amino acid sequence as shown in SEQ ID No.1-12 on the basis of IsPETase. Compared with IsPETase, the chimeric enzyme for degrading PET provided by the invention has the advantages that the thermal melting temperature is increased by 4.8-31.7 DEG C, the concentration of a degradation product TPA after PET degradation is increased by 1.5-44.5 times, while the application conditions of PET degradation are widened, the PET degradation efficiency can be greatly improved, the recycling rate of the degradation product TPA with high added value is increased, and the chimeric enzyme has important economic value and environmental benefit. The method can be used in the fields of PET degradation, PET degradation agent preparation or PET degradation product preparation and the like.

The invention discloses a double transition metal / chitosan-based carbon aerogel composite material and a preparation method and application thereof.The method comprises the steps that a nitrogen source and transition metal salt are added into a hydrochloric acid solution of chitosan, stirred, dissolved and evenly dispersed to prepare a mixed solution, the mixed solution is subjected to freeze drying, and the double transition metal / chitosan-based carbon aerogel composite material is obtained. Chitosan aerogel containing transition metal and a nitrogen source is prepared; the transition metal salt is any two of ferric salt, cobalt salt and nickel salt; the chitosan aerogel containing the transition metal and the nitrogen source is placed in a methanol solution of 2-methylimidazole, after vibration treatment and drying, the chitosan aerogel is placed in a nitrogen atmosphere to be subjected to heat treatment, and the double-transition-metal / chitosan-based carbon aerogel composite material is prepared. The preparation method is simple and reasonable in design, the prepared material has good specific surface area and porosity, the formed metal-nitrogen double active center effectively improves the adsorption performance of the material, and the material has good catalytic performance.

The invention relates to a preparation method of a multilayer alloy net electrode for hydrogen production by alkaline electrolysis of water and the multilayer alloy net electrode, and the preparation method comprises the following steps: firstly, selecting an alloy electrode net material, then etching the alloy electrode net, and carrying out electrochemical etching by taking the alloy electrode net as an anode and an inert electrode as a cathode and using 0.5-5M acid liquor to prepare the multilayer alloy net electrode. The preparation method comprises the following steps: sequentially overlapping a first layer of pure nickel net with the mesh number of 80-200 and a second layer of etched alloy electrode net with the mesh number of 40-80 and a third layer of etched alloy electrode net with the mesh number of 20-40, carrying out vacuum sintering at 800-1400 DEG C for 2-5 hours, and finally stirring and drying in a polyethyleneimine aqueous solution. Compared with the prior art, the obtained electrode has the advantages of being low in cost, high in catalytic activity, fast in bubble removal, high in durability and stability and the like, effectively solves many problems of an existing alkaline water hydrogen production electrode, has a wide application prospect in the field of alkaline water electrolysis hydrogen production, can remarkably improve the water electrolysis efficiency and is beneficial to large-scale industrial production.

The invention discloses a preparation method of a lactoferrin-polyphenol nano compound with an intestinal immune function. The method comprises the following steps: firstly, moderately hydrolyzing lactoferrin under the action of compound protease, and optimizing a protein molecular structure; then, compounding with water-soluble polyphenol (such as chlorogenic acid or epicatechin) by utilizing a metal ion chelating technology, and inducing lactoferrin to be bridged and aggregated by Ca to form a compound; and then, carrying out ultrasonic homogenization treatment, and further controlling the particle size to enable the particle size to be distributed in a range of 100-300 nm. The obtained compound is subjected to nanofiltration concentration and electrostatic spray drying to obtain a shell-core nano compound with a stable structure, and nitrogen-filled packaging is adopted to prevent oxidation. The lactoferrin-polyphenol nano-composite prepared by the invention not only has good stability and intestinal immunity enhancement effect, but also has remarkable antibacterial activity, and can be widely applied to functional foods and nutritional health-care products.

The invention discloses a preparation method and application of a pyrenyl covalent organic framework material containing pyridine nitrogen. The material has good application in the aspect of activating potassium monopersulfate (PMS) to degrade organic pollutants. The preparation method of the pyrenyl covalent organic framework material containing pyridine nitrogen comprises the following steps: taking 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 2, 6-pyridinedicarboxaldehyde as synthesis precursors, and carrying out Schiff base reaction to obtain the pyrenyl covalent organic framework material containing pyridine nitrogen. By introducing a pyridine nitrogen structure, the PMS activation capacity is remarkably improved, the efficient catalytic degradation capacity on bisphenol A is shown, meanwhile, the material is stable in property, does not generate secondary pollution, can be recycled, and has important application value and application prospects in the aspect of organic pollutant degradation.

The invention provides an electrode loaded with an amorphous catalyst as well as a preparation method and application of the electrode. The preparation method comprises the steps that aluminum metal powder and magnesium metal powder are subjected to first mixing, and mixed aluminum-magnesium powder is obtained; the mixed aluminum-magnesium powder is sprayed on the surface of at least one side of a metal nickel base material in a vacuum plasma spraying mode, and the metal nickel base material loaded with an aluminum-magnesium alloy transition layer is obtained; carrying out second mixing on the amorphous metal source and an auxiliary agent to obtain mixed amorphous powder; the mixed amorphous powder is sprayed on the surface of the side, away from the metal nickel base material, of the aluminum-magnesium alloy transition layer in a cold spraying mode, an amorphous catalyst layer is obtained, and then a first electrode is obtained; and sequentially carrying out heat treatment and alkaline leaching on the first electrode to obtain the electrode loaded with the amorphous catalyst. The aluminum-magnesium alloy transition layer is firstly prepared on the metal nickel base material, and then the amorphous catalyst layer is prepared through the cold spraying technology, so that the binding force between the amorphous catalyst layer and the base material is effectively enhanced.

The invention relates to the technical field of CH4-CO2 reforming catalysts, in particular to a Ni-based CH4-CO2 reforming catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: adding absolute ethyl alcohol into a polyvinylpyrrolidone solution to obtain a dispersion liquid; adding a nickel salt, a lanthanum salt and a praseodymium salt into the dispersion liquid for dissolving to obtain an electrostatic spinning solution; performing electrostatic spinning on the electrostatic spinning solution to obtain a fiber film; roasting the fiber film to obtain a catalyst precursor; and calcining the catalyst precursor to obtain the Ni-based CH4-CO2 reforming catalyst. The Ni-based CH4-CO2 reforming catalyst prepared by the preparation method disclosed by the invention has relatively good catalytic activity and stability; the alloy formed by the La-Pr bimetal greatly improves electron transfer in the reforming reaction process, so that the catalytic activity and catalytic stability of the CH4-CO2 reforming catalyst are effectively improved.

The invention relates to the field of electronic components, in particular to a pin header convenient to install, which comprises a base, and a sliding plane is arranged on the base; the pin header module comprises one or more pins and can be independently mounted on the base; the sliding assembly enables the pin header module to freely move along the sliding plane; and the locking assembly is used for fixing the pin header module at an expected position of the base. The pin header has the effect of relieving the problem that related pin headers are poor in flexibility and difficult to install.

The invention discloses an all-electric carrying vehicle with a chassis protection structure, and relates to the technical field of carrying vehicle chassis protection, the all-electric carrying vehicle comprises a chassis, an upper protection plate, an electric control processor, a 3D camera and a laser range finder, the electric control processor is fixedly installed on the top of the outer wall of the chassis, and the 3D camera and the laser range finder are fixedly installed on the front face of the outer wall of the chassis; and the 3D camera and the laser range finder are connected to the electric control processor through data lines, an upper protection plate is movably installed at the bottom of the outer wall of the chassis, and a lower protection plate is connected and installed at the bottom of the outer wall of the upper protection plate through a self-adaptive lifting assembly. By installing the self-adaptive lifting assembly, the self-adaptive lifting protection function is achieved according to different terrains and obstacle conditions, the problem that the protection height of a traditional carrier for protection of a chassis cannot be adjusted is solved, the protection flexibility and operation stability of the carrier are improved, and the carrying efficiency and the protection effect are improved.

The invention provides a preparation method and application of a novel rare earth doped ferronickel-based alkaline electrolytic water anode catalyst, a substrate of the electrolytic water catalyst is foam iron, and the electrolytic water catalyst does not contain noble metal elements. The electrolyzed water catalyst not only avoids the use of noble metal, but also reduces the use of foamed nickel (the market price of nickel is much higher than that of iron), and has a great advantage in cost.

The invention discloses an anti-clogging CO catalytic oxidation module and a preparation technology, and relates to the technical field of sintering machine CO catalytic oxidation energy conservation and emission reduction technologies, the anti-clogging CO catalytic oxidation module comprises a catalyst module which is arranged in a combined mode, and the catalyst module comprises catalyst sheet layers and supporting columns; the catalyst modules are combined in one of double layers and multiple layers through catalyst sheet layers and supporting columns, and flue gas dredging and flow equalizing layers are formed between the adjacent catalyst sheet layers and between the adjacent catalyst modules; according to the present invention, the catalyst sheet layers and the support columns are arranged and combined with a plurality of layers and a plurality of layers so as to construct the brand new flue gas dredging and flow equalizing layer so as to re-uniformly distribute the flue gas between the adjacent catalyst sheet layers and between the adjacent bed layers, such that the dust is not easily attached to the catalyst surface, and the dust on the catalyst surface can be eliminated and can be reduced; the stable efficiency of the catalyst is kept, the service life of the catalyst is prolonged, and the CO catalytic oxidation efficiency can be improved through the uniformity of airflow.

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

The invention belongs to the technical field of microorganisms, and particularly discloses a strain of lactobacillus plantarum and application thereof, and the preservation number of the lactobacillus plantarum SN21 is CCTCC (China Center For Type Culture Collection) NO: M20252076. The lactobacillus plantarum SN21 provided by the invention is applied to fermentation of the peanut protein, the antigenicity of the peanut protein can be effectively reduced by optimizing fermentation conditions, and the oxidation resistance of a product is improved; meanwhile, the lactobacillus plantarum SN21 provided by the invention is used for fermenting peanut protein, and the solubility and the emulsifying property of the lactobacillus plantarum SN21 are improved. The strain has a good application prospect in development and utilization of fermented foods, and particularly has a relatively good application value in development of low-sensitivity peanut products and improvement of functional characteristics.

The utility model belongs to joint bearing technical field, specifically speaking is a kind of detachable rod end joint bearing, including fixed subassembly, connecting component and bearing assembly;Fixed subassembly contains the fixed seat of installation slot, three threaded holes and thread groove, bolt is tightened bearing outer ring in threaded hole, and threaded rod is fixedly connected in thread groove;Connecting component contains connecting rod and one end integrally formed double-threaded threaded tube, threaded tube outer thread cooperates with thread groove, inner thread cooperates with threaded rod, and three are coaxial;Bearing assembly contains outer ring, inner ring, ball and retainer, ball is rollingly engaged between two circular arc grooves.The utility model realizes that each component can be detached, and damaged component can be replaced separately, reduces maintenance cost, improves assembly flexibility and transmission efficiency, shortens maintenance downtime, and is suitable for engineering machinery, automation equipment and other transmission scenes.

The present invention discloses a hydrogenation catalyst and its preparation method and application. The catalyst uses an inorganic refractory oxide as a carrier, a Group VIIIB noble metal as an active component, and carbon as an additive. The Group VIIIB noble metal active component and the additive carbon are distributed on the surface of the inorganic refractory oxide carrier; based on the weight of the final hydrogenation catalyst, the Group VIIIB noble metal active component has a simple substance content of 0.05% to 2%, preferably 0.2% to 0.35%, and the additive carbon content is 0.05% to 5%, preferably 0.2% to 2%. The catalyst is used in the production of hydrogen peroxide by anthraquinone hydrogenation, which can significantly improve the activity of the long-term operation of the anthraquinone hydrogenation reaction.

This invention relates to the field of catalyst preparation, and discloses a methanation catalyst, its preparation method and application, and a methanation method. The methanation catalyst contains a catalyst support and a nickel active component. Based on the total mass of the methanation catalyst, the catalyst support comprises 80-90 wt% by mass, and the nickel active component (calculated as oxide) comprises 10-20 wt% by mass. The average mechanical strength of the catalyst support is 35-80 N / mm. The particle mechanical strength dispersion coefficient of the catalyst support is in the range of 0-0.55. The catalyst support has a large specific surface area and pore volume. Combined with the supported nickel active component, it can improve the catalytic activity and selectivity of the catalyst. Simultaneously, the catalyst has high average mechanical strength, resulting in high CO conversion and methane selectivity in the methanation reaction.

The invention relates to a preparation method and application of a supported cobaltosic oxide catalyst, and the preparation method comprises the following steps: 1) dissolving a cobalt source and a carrier precursor in ethanol and water, adding 2-methylimidazole, stirring, standing, aging, and drying to obtain ZIF-67-based precipitate; and 2) carrying out primary roasting on the ZIF-67-based precipitate in a reducing atmosphere and carrying out secondary roasting in an oxidizing atmosphere in sequence to obtain the supported cobaltosic oxide catalyst, and applying the supported cobaltosic oxide catalyst to the reaction of catalyzing propane to generate carbon dioxide and water. Compared with the prior art, the method for preparing the supported cobaltosic oxide catalyst based on the ZIF-67 not only simplifies the preparation process and reduces the cost, but also remarkably improves the performance of the catalyst, and has important practical significance for improving the efficiency and economical efficiency of a VOCs catalytic oxidation technology; the preparation method provides a new and efficient solution for the development of a VOCs catalytic oxidation technology, and is expected to realize more environment-friendly and more economical VOCs treatment in industrial application.

The utility model relates to experimental device technical field, concretely relates to a kind of paddy field soil remediation experimental device based on photosynthetic bacteria. Specific technical scheme is: including soil culture container, multiple partitions are horizontally and detachably arranged in the soil culture container, a plurality of small holes are arranged on the partition, filter screen is arranged on the partition and the inner bottom surface of soil culture container, a channel with one end opening is horizontally arranged in the partition, the top of the partition is provided with multiple through holes communicated with the channel, pipeline is inserted in the channel, the top surface of the pipeline is provided with multiple insertion holes, and corresponds with the through hole, diffusion tube is sequentially inserted into insertion hole and communicated by passing through filter screen and through hole, liquid inlet pipe is arranged outside soil culture container, liquid inlet pipe is communicated with pipeline, and liquid inlet pipe is communicated with bacteria liquid tank.The utility model can simulate paddy field ecological environment, provide suitable growth and metabolism conditions for photosynthetic bacteria, so as to systematically study the repair effect of photosynthetic bacteria on paddy field soil.

This invention relates to the field of sensing materials technology, specifically disclosing a cellulose-based conductive hydrogel material for ascorbic acid detection, its preparation method, and its applications. This hydrogel uses TEMPO oxidized cellulose nanofibers (TOCNF) as a biocompatible matrix. By introducing Cu-BTC / CNT composite nanoparticles, a three-dimensional conductive network with both high electrochemical activity and structural stability is constructed. While retaining the biocompatibility and flexibility of cellulose, it exhibits particularly high sensitivity and selectivity in detecting small biomolecules such as ascorbic acid, with short response time and good stability. This method achieves synergistic optimization of the composite material's structural uniformity and functionality without relying on complex molding processes. Experimental results show that the conductive hydrogel prepared by this invention possesses good mechanical properties and biocompatibility, exhibiting high sensitivity and stability in biosensing fields such as ascorbic acid detection, providing a novel high-performance material basis for flexible biosensors.

The invention relates to the technical field of monatomic catalysis, and discloses a monatomic catalyst as well as a preparation method and application thereof. The monatomic catalyst comprises a nitrogen-doped porous carbon carrier and transition metal dispersed on the surface of the nitrogen-doped porous carbon carrier in a monatomic form; wherein the loading capacity of the transition metal is 0.2-2% by mass; on the basis of the total amount of the catalyst, the content of nitrogen in the nitrogen-doped porous carbon carrier is 0.5-4% by mass. Transition metal in the monatomic catalyst is uniformly dispersed on the surface of the nitrogen-doped porous carbon carrier in a monatomic form, and the monatomic catalyst has high activity and high stability when being used as a catalyst for an electrocatalytic oxygen reduction reaction, a hydrogen evolution reaction, an oxygen evolution reaction or a fuel cell.

The utility model relates to the technical field of vacuum switches, in particular to a pole-mounted switch, which comprises a switch base, a solid-sealed polar pole is arranged at the top of the switch base, a linkage plate is arranged at the bottom of the solid-sealed polar pole, the linkage plate is fixedly connected with an insulating pull rod of the solid-sealed polar pole, the linkage plate is positioned inside the switch base, a main shaft is arranged on one side of the linkage plate, and the main shaft is fixedly connected with the switch base. The two ends of the main shaft are pivoted with the switch base, one axial end of the main shaft extends to the outer side of the switch base and is connected with an operation pull rod, the main shaft is provided with a plurality of pull rod connecting levers, each pull rod connecting lever is provided with a pressing part capable of rotating along with the main shaft, and the pressing part is of an extending structure parallel to the radial plane of the main shaft. And after rotating according to the threshold direction, the hold-down part can abut against the linkage plate and drive the insulation pull rod of the solid-sealed polar pole to move downwards. According to the utility model, problems of poor synchronism of a transmission structure and overlong opening rebound time during closing and opening of some existing pole-mounted switches can be solved.

The application discloses a leg movement mechanism of a humanoid robot, which comprises a hip joint structure, a thigh structure, a knee joint structure, a shank structure, an ankle joint structure and a foot sole structure, an ankle joint pitching driving motor and an ankle joint horizontal rolling driving motor are fixedly installed at the thigh structure close to the hip joint structure, the two motors are connected to two power input gears of a differential mechanism through a transmission mechanism, a power output gear of the differential mechanism is connected to a shank connecting rod through a spherical hinge, and the shank connecting rod is connected to the foot sole structure at the end. The ankle joint pitching driving motor and the ankle joint horizontal rolling driving motor are moved upward to the thigh structure close to the hip joint structure, the mass and the rotational inertia of the shank structure are effectively reduced, the energy consumption is reduced, the movement flexibility and the response speed are improved, and the adaptability to different movement modes and terrains is enhanced through coupling and decoupling control.

The invention discloses a preparation method of a monatomic catalytic material and application of the monatomic catalytic material in degradation of bisphenol A. The method comprises the following steps: (1) adding acetic acid and zircon salt into an organic solvent containing terephthalic acid or ortho-substituted terephthalic acid, and reacting in a sealed environment at high temperature to obtain UiO-66-X; wherein the molar ratio of zircon salt to terephthalic acid or ortho-substituted terephthalic acid is less than 1; (2) soaking the UiO-66-X obtained in the step (1) in N, N-dimethylformamide, then soaking the UiO-66-X in acetone, centrifuging, washing, and carrying out vacuum drying overnight to obtain UiO-66-X powder; (3) dispersing the UiO-66-X powder in an organic solvent containing cobalt salt, carrying out ultrasonic dispersion, and reacting in a sealed environment at high temperature to obtain Co / UiO-66-X; and (4) firstly soaking the Co / UiO-66-X obtained in the step (3) in N, N-dimethylformamide, then soaking the Co / UiO-66-X in acetone, centrifuging, washing, and carrying out vacuum drying overnight to obtain Co / UiO-66-X powder.

A method for preparing a hydrodemetallization catalyst, belonging to the field of catalyst preparation technology, includes the following steps: impregnating spherical carbon particles with an iron-containing solution and drying them; mixing the dried carbon particles uniformly with alumina sol and forming droplets; drying and calcining the formed products to obtain an iron-modified alumina support; immersing the iron-modified alumina support in an organic ammonium solution for a first and second hydrothermal treatment; drying and calcining the treated products to obtain a treated alumina support; impregnating the treated alumina support with an active component impregnation solution; drying and calcining the impregnated support to obtain the hydrodemetallization catalyst. The catalyst prepared by this method exhibits high dehydrogenation, Ni removal, and V removal activity, while also possessing high tolerance for metal impurities. This catalyst is particularly suitable for the hydrotreating of heavy oil with high Ni impurity content.

The invention belongs to the technical field of photo-assisted Fenton, and particularly relates to a triazine ring-containing polyimide covalent organic framework material, a preparation method and application thereof, and the material has good application in the aspect of activating potassium monopersulfate (PMS) to degrade organic pollutants. The preparation method of the triazine ring-containing polyimide covalent organic framework material comprises the following steps: taking 1, 4, 5, 8-naphthalene tetracarboxylic anhydride and melamine as synthesis precursors, and carrying out Schiff base reaction to obtain the triazine ring-containing polyimide covalent organic framework material. The polyimide covalent organic framework prepared by the preparation method disclosed by the invention has relatively strong anti-interference capability, relatively high singlet oxygen selectivity, relatively high catalytic degradation activity and cycling stability, and relatively high application prospect in the field of catalytic degradation of organic pollutants such as antibiotics.

This invention relates to the field of cutting equipment technology and discloses a cutting device for the production and processing of stainless steel round bars. The device includes a base and a shearing machine body fixedly installed at the top center of the base. The shearing machine body includes a support base, a fine-tuning component is disposed between the support base and the base, and a positioning component is disposed on one side of the top of the base. The fine-tuning component is driven by a threaded screw and a screw sleeve, and a gear and nut structure achieves stable locking after adjustment. A scale structure is used to achieve precise adjustment of the cutting position. In the positioning component, the round bar drives a rubber wheel to rotate, which in turn drives a pointer to rotate via a bevel gear, completing length measurement in conjunction with a scale. Through the coordinated functions of the two sets of components, the device achieves round bar circumferential positioning, precise measurement without markings, and rapid fixed-length cutting. Its compact structure is suitable for portable applications, and the purely mechanical transmission provides strong anti-interference capabilities, effectively avoiding round bar skew and measurement failure, significantly improving cutting accuracy and operational efficiency.

This invention belongs to the field of temperature difference control technology for upper and lower bridge arms of a power module, and particularly relates to a method for dynamically balancing the temperature difference between the upper and lower bridge arms. The method includes: S1, acquiring the temperatures of the upper and lower bridge arms; S2, calculating the temperature difference and the rate of change of the temperature difference between the upper and lower bridge arms; wherein, T1 equals the upper bridge arm temperature minus the lower bridge arm temperature; if T1 < T2, entering monitoring mode and recording only data; if T1 ≤ < T2, entering a mild adjustment mode and proceeding to S3; if T1 ≥ T2, entering an aggressive adjustment mode and proceeding to S4; wherein T1 and T2 are preset first and second temperature difference thresholds, respectively; S3, reducing the temperature difference by adjusting the PWM duty cycle and dead time; S4, reducing the temperature difference by switching the operating mode and adjusting the switching frequency. This method can achieve active, rapid, and accurate dynamic balancing of the temperature difference between the upper and lower bridge arms without affecting system performance.

The invention provides a platinum-bismuth alloy catalyst, a preparation method thereof and a direct methanol fuel cell, and belongs to the technical field of electrochemical catalysts. The method comprises the following steps: mixing carbon black with an acidic aqueous solution, and sequentially carrying out acidizing treatment and roasting treatment to obtain pretreated carbon black; mixing the pretreated carbon black, Bi2O2CO3, a platinum source, a precipitant, a pH regulator, a first dispersing agent and first water, and performing replacement reaction to obtain a suspension; mixing a reducing agent, a second dispersing agent and second water to obtain a mixed solution; dropwise adding the suspension into the mixed solution for reduction reaction to obtain a catalyst precursor; and calcining the catalyst precursor under first protective gas to obtain the platinum-bismuth alloy catalyst. The prepared platinum-bismuth alloy catalyst has excellent electro-catalytic performance, shows relatively high catalytic activity and cycling stability, and can be applied to oxygen reduction reaction of a cathode of a direct methanol fuel cell.

This invention discloses a non-contact ship bottom cleaning machine based on pulse cavitation technology, comprising a mounting frame with a sealed box, inside which are pulse cavitation generation equipment and control equipment. Two drive wheels are fitted with transmission belts, the outer walls of which are fixed with permanent magnets. A drive mechanism for rotating a drive shaft is installed inside the sealed box. A mounting plate is mounted on the mounting frame, and multiple sets of dirt guiding mechanisms are installed on the mounting plate. This invention effectively solves the core technical bottlenecks of existing pulse cavitation cleaning robots, achieving integrated operation of non-contact, high-efficiency ship bottom cleaning and simultaneous dirt collection. It retains the advantages of pulse cavitation technology—high cleaning efficiency, no secondary damage, and environmental friendliness—while avoiding the impact of dirt diffusion on the moving mechanism, thus improving the machine's mobility and operational stability.

The invention provides a fluorinated ruthenium oxide catalyst and a preparation method and application thereof.The preparation method of the fluorinated ruthenium oxide catalyst comprises the steps that S1, ruthenium precursor salt and villiaumite are dissolved in an alcohol solvent, and a mixed solution is obtained; s2, drying the mixed solution to remove the alcohol solvent to obtain a catalyst precursor; and S3, adding the catalyst precursor into molten nitrate for reaction, and after the reaction is completed, washing and drying the obtained product to obtain the fluorinated ruthenium oxide catalyst. The prepared fluorinated ruthenium oxide electrocatalyst shows excellent electrocatalytic activity in an acidic electrolyzed water anode oxygen evolution reaction, and also has relatively good long-term working stability.