88 results about "Ruthenium trichloride" patented technology

The invention relates to the technical field of catalyst processing, and discloses a high-activity transition metal phosphide electrolyzed water catalyst and a preparation method thereof, and the high-activity transition metal phosphide electrolyzed water catalyst comprises the following components by weight: 1-3 parts of cobalt chloride hexahydrate; 0.5 to 1.5 parts of ruthenium trichloride; 0.5 to 1.5 parts of iridium chloride (III) hydrate; 1-2 parts of copper sulfate pentahydrate; 2 to 4 parts of sodium hypophosphite; 1 to 2 parts of urea; 1 to 2 parts of glucose; 1-2 parts of sodium sulfide nonahydrate; 0.5 to 1 part of crystalline aluminum chloride; 50 to 100 parts of deionized water; and 0.1 to 0.5 part of hexadecyl trimethyl ammonium bromide. By introducing the plasma auxiliary treatment technology, the electronic structure of the catalyst is optimized, the conductivity and stability of the catalyst are improved, and the efficiency and durability of hydrogen production through water electrolysis are enhanced.

The invention discloses a conductive layer coated ruthenium-doped beta-manganese dioxide catalyst and a preparation method and application thereof.The preparation method comprises the following steps that a manganese source, ruthenium trichloride trihydrate, an oxidizing agent and water are mixed, an obtained precursor solution is subjected to microwave synthesis, and the conductive layer coated ruthenium-doped beta-manganese dioxide catalyst is obtained. The obtained ruthenium-doped beta-manganese dioxide composite material, hydrochloric acid A and aniline are added into water, then hydrochloric acid B and ammonium persulfate are added, the obtained polyaniline-coated ruthenium-doped beta-manganese dioxide composite material is subjected to calcination treatment, and the conductive layer-coated ruthenium-doped beta-manganese dioxide catalyst is obtained. The conductive layer coated ruthenium-doped beta-manganese dioxide catalyst prepared by the invention has excellent catalytic activity and catalytic stability, and solves the problem of insufficient stability caused by high catalytic potential and catalyst dissolution in the test process of the anode catalyst of the proton exchange membrane electrolytic cell.

The invention provides a manufacturing method of an iridium tantalum titanium anode. The manufacturing method comprises the following steps: pretreating a titanium substrate; tantalum metal is plated on the surface of the titanium substrate in a vacuum mode through the magnetron sputtering technology, then sintering is conducted for 30-35 min at the temperature of 600-620 DEG C, and a tantalum middle layer with the thickness of 100-200 nm is formed; a mixed solution containing iridium and tantalum is sprayed on the surface of the tantalum middle layer, then pre-oxidation is conducted for 15-20 min at the temperature of 480-530 DEG C, an iridium-tantalum coating is formed, the iridium content is 18-25 g / m < 2 >, and the tantalum content is 15-18 g / m < 2 >; coating the surface of the iridium-tantalum coating with a base metal mixed solution for 3-4 times, and then sintering at 480-530 DEG C for 20-35 minutes to form an organic matter resistant coating with the thickness of less than or equal to 5 microns; wherein the base metal mixed solution contains ruthenium trichloride, and the ruthenium content in the organic matter resistant coating is 1.2-1.8 g / m < 2 >. According to the manufacturing method of the iridium-tantalum-titanium anode provided by the invention, the service life of the anode is prolonged and the cost is reduced by optimizing the tantalum coating process of the middle layer and the design of the surface coating. The invention further provides the iridium tantalum titanium anode manufactured by the manufacturing method.

The invention relates to the technical field of water electrolysis hydrogen production catalysts, in particular to an integral tungsten-doped ruthenium dioxide catalyst and a preparation method and application thereof.The preparation method comprises the steps that tungstic acid and ruthenium trichloride serve as raw materials and are dissolved in different solvents to prepare precursor solutions, then the precursor solutions are mixed to be uniform, and the integral tungsten-doped ruthenium dioxide catalyst is obtained; and dipping and coating a current collector, and carrying out drying and heating treatment to obtain the integral tungsten-doped ruthenium dioxide catalyst. The tungsten element is uniformly doped on the surface of ruthenium dioxide, so that the catalytic activity and the catalytic stability of the catalyst are greatly improved. And the tungsten-doped ruthenium dioxide catalyst is loaded on the current collector in the form of nano-scale particles, so that more active sites can be exposed, and the catalytic activity and the catalytic stability of the catalyst are further improved. The catalyst can be directly used as a working electrode, the preparation process is simplified, the preparation cost of the anode is saved, and the catalyst has a good application prospect in oxygen evolution reaction in hydrogen production through acidic water decomposition.

The invention relates to an ultrathin Ru / Co3O4 catalyst, Co3O4 serving as a carrier is of an ultrathin two-dimensional nanosheet structure, and Ru nanoparticles are uniformly loaded on the surface of the Co3O4. The preparation method comprises the following steps: dispersing Co3O4 in a mixture of deionized water and methanol to obtain a suspension; and adding ruthenium trichloride into the suspension, and irradiating the mixture with a xenon lamp to finally obtain the ultrathin Ru / Co3O4 catalyst. The invention relates to an ultrathin Ru / Co3O4 catalyst applied to photo-thermal CO2 hydrogenation. The method has the advantages that Co3O4 is of an ultrathin two-dimensional nanosheet structure, Ru is evenly loaded on the surface of Co3O4, Ru / Co3O4 has the high specific surface area, rich active sites are provided, the photo-thermal catalysis CO2 hydrogenation activity is remarkably improved, the problem that an existing catalyst is low in activity is solved, parameters such as the heating rate, the roasting temperature and time are accurately controlled, and Ru doping is combined, so that the catalytic activity of CO2 is greatly improved. Active component loss and structure collapse are effectively avoided, and the stability is enhanced.

The invention relates to a RuSe2-MoSe2 / NF heterojunction bifunctional catalyst for fully hydrolyzed seawater as well as a preparation method and application of the RuSe2-MoSe2 / NF heterojunction bifunctional catalyst, and belongs to the technical field of seawater electrolysis electrocatalysis. The preparation method of the bifunctional catalyst comprises the following steps: (1) mixing deionized water and absolute ethyl alcohol, and magnetically stirring to obtain a mixed solvent; then adding sodium borohydride and selenium powder into the mixed solvent, and stirring until the mixture is completely dispersed to obtain a mixed solution; adding sodium molybdate dehydrate and ruthenium trichloride into the mixed solution, introducing high-purity nitrogen, replacing air, and continuing magnetic stirring to obtain a dark brown precursor mixed solution; and (2) completely immersing the pretreated nickel foam NF in the precursor mixed solution, carrying out hydrothermal reaction, cooling to room temperature after the reaction, taking out the nickel foam NF, washing with deionized water for 3-5 times, then washing with absolute ethyl alcohol for 3-5 times, and drying to obtain the nickel foam NF. The bifunctional catalyst provided by the invention can efficiently catalyze a hydrogen evolution reaction and an oxygen evolution reaction in seawater at the same time.

This invention discloses a composite nanozyme that enhances the clinical efficacy of oxaliplatin, its preparation method, and its application. The composite nanozyme consists of indium ruthenium nanozyme and an iliximab embedding and anchoring layer. The indium ruthenium nanozyme consists of indium ruthenium nanoparticles and a carbon-nitrogen framework, with the indium ruthenium nanoparticles loaded on the surface and within the pores of the carbon-nitrogen framework. The iliximab embedding and anchoring layer consists of a dithiol polyethylene glycol coating layer and iliximab. Preparation method: ZIF-8 is prepared by co-precipitation of zinc salt methanol solution and 2-methylimidazole methanol solution, followed by calcination to obtain the carbon-nitrogen framework. The carbon-nitrogen framework dispersion is then stirred in an oil bath with indium nitrate solution and ruthenium trichloride solution to prepare a nanozyme precursor, followed by calcination to obtain indium ruthenium nanozyme. The indium ruthenium nanozyme is dispersed in a dithiol polyethylene glycol solution, and iliximab solution is added dropwise. The resulting solid product is then dried. This invention can solve problems such as strong drug tolerance, insufficient intracellular accumulation, and severe tumor immunosuppression in oxaliplatin treatment.

The present invention provides a preparation method and application of Ru-RuO2 nanosheets, belonging to the technical field of nanomaterial preparation. The present invention first adds L-proline, ruthenium trichloride trihydrate, and urea to ethanol, ultrasonically dissolves them, and then heats them to form a colloidal liquid, and then performs Joule heat treatment under an air atmosphere to obtain Ru-RuO2 nanosheets. This method does not require surfactants, templates, reducing atmospheres, and complex calcination processes, and can achieve the preparation of porous heterojunction Ru-RuO2 nanosheets with high efficiency and low energy consumption, and has prospects for industrial application. This two-dimensional porous heterojunction formed by in-situ calcination has a rich interface structure, can give full play to the synergistic effect of the two components, and significantly improves its activity and stability in acidic water electrolysis applications.

The invention discloses a preparation method of a titanium anode for disinfecting a swimming pool. The preparation method comprises the following steps: carrying out surface pretreatment on a titanium substrate; preparing a coating solution A, a coating solution B, a coating solution C and a coating solution D, wherein the coating solution A is a chloroplatinic acid n-butyl alcohol solution with the concentration of 0.05-0.1 mol / L; the coating liquid B is an n-butyl alcohol mixed solution containing chloroplatinic acid and tantalum pentachloride, and the total metal ion concentration of the coating liquid B is 0.05-0.1 mol / L; the coating liquid C is an n-butyl alcohol mixed solution containing chloroplatinic acid and ruthenium trichloride, and the total metal ion concentration of the coating liquid C is 0.6-0.8 mol / L; the coating liquid D is a butanol solution containing ruthenium trichloride, and the total metal ion concentration of the coating liquid D is 0.3-0.5 mol / L; and the surface of the titanium substrate is sequentially coated with the coating liquid of all the coatings, drying and sintering treatment are conducted after coating of each coating, and a compact bottom layer, a middle buffer layer, a transition layer and a surface active layer are sequentially formed. According to the preparation method of the titanium anode for disinfecting the swimming pool, an optimized micro-crack structure which is controlled in crack number, small in size and uniform in distribution is constructed, so that the service life of the anode is remarkably prolonged while the efficient disinfecting capacity is guaranteed. The invention also provides the titanium anode prepared by the method.

This invention belongs to the technical field of magnesium-ion battery materials, specifically to a method for preparing ruthenium disulfide-copper pentasulfide (Cu9S5-RuS2) cathode material for magnesium-ion batteries. This method utilizes a simple hydrothermal synthesis technique, using copper dichloride dihydrate, thiourea, and ruthenium trichloride as raw materials to successfully synthesize Cu9S5-RuS2. This Cu9S5-RuS2, as a cathode material for magnesium-ion batteries, exhibits excellent electrochemical performance. Furthermore, the preparation process is simple to operate, contributing to the advancement and commercialization of magnesium-ion battery technology.

The invention relates to a Pt / Ru / RuO2 heterostructure metal aerogel material and a preparation method thereof. The method is realized through a two-step simple process which comprises the following steps: firstly, reducing ruthenium trichloride and potassium chloroplatinate in an aqueous solution by taking sodium borohydride as a reducing agent to obtain precursor hydrogel; and then the hydrogel is subjected to freeze drying and annealing treatment, and the final product Pt / Ru / RuO2 heterostructure metal aerogel is obtained. According to the preparation strategy, a traditional sodium borohydride reduction method is improved, operation is easy and convenient, consumed time is short, and used drugs are not only non-toxic and harmless, but also extremely low in cost. Performance tests show that the Pt / Ru / RuO2 heterostructure metal aerogel has excellent performance in electro-catalytic hydrogen evolution (HER) and oxygen evolution (OER) reactions: under the high current density of 10 mA. Cm <-2 >, the overpotentials of HER and OER are only 17 mV and 1840 mV respectively; more notably, after continuous testing for 24 hours under the current density, the performance of the material is basically not attenuated, and excellent stability is shown. By virtue of the advantages, the material has a wide application prospect in the field of energy conversion of electrolyzed water and the like.

The invention discloses an iridium-ruthenium diatom / sponge nickel composite material, a preparation method thereof and application of the iridium-ruthenium diatom / sponge nickel composite material in alkaline electro-catalytic hydrogen evolution. The preparation method comprises the following steps: weighing nickel acetate, dissolving hydrazine hydrate, chloroiridic acid and a ruthenium trichloride aqueous solution in deionized water to prepare a mixed solution, placing the mixed solution in a high-pressure reaction kettle, and carrying out a hydrothermal reaction to obtain the iridium-ruthenium diatom / sponge nickel composite material electrocatalyst. Compared with an original sponge nickel electrocatalyst, the iridium ruthenium diatom / sponge nickel composite material prepared by the invention has better alkaline electrocatalytic hydrogen evolution performance; the method has the advantages that the acidity of chloroiridic acid enables part of Ni atoms to be dissolved out to generate Ni vacancies, so that iridium-ruthenium diatomic nucleation sites are provided. The composite material can synergistically catalyze alkaline hydrogen evolution, the mechanism of the composite material provides alkaline H2O cracking sites for nickel sites, active hydrogen species are obtained, rapid desorption of hydrogen protons is further achieved through iridium-ruthenium diatoms, and therefore more excellent alkaline electrocatalytic hydrogen evolution performance is obtained.

The invention provides a preparation method and application of Ru-RuO2 nanosheets, and belongs to the technical field of nano material preparation. The preparation method comprises the following steps: firstly, adding L-proline, ruthenium trichloride trihydrate and urea into ethanol, carrying out ultrasonic dissolution, heating and reacting to form jelly liquid, and then carrying out Joule heat treatment in an air atmosphere to obtain the Ru-RuO2 nanosheet. According to the method, a surfactant, a template agent, a reducing atmosphere and a complex calcining process are not needed, the preparation of the porous heterojunction Ru-RuO2 nanosheet can be realized with high efficiency and low energy consumption, and the method has an industrial application prospect. The two-dimensional porous heterojunction formed through in-situ calcination has a rich interface structure, the synergistic effect of two components can be fully exerted, and the activity and stability of the heterojunction in acidic electrolyzed water application are remarkably improved.

The application discloses a loadable IrRu alloy nanosheet catalyst and a preparation method thereof. The IrRu alloy nanosheet has a nanometer and / or sub-nanometer size thickness. The preparation method is simple in process and good in universality. According to the requirements of the application type of the catalyst, a targeted carrier can be selected. Metal precursors of hydrate iridium chloride and trichloro-ruthenium, a reducing agent and a carrier are fully mixed in an organic solvent. Under the reaction condition of heating and stirring, the IrRu alloy nanosheet can be controlled to grow on the surface of the carrier. The catalyst shows excellent electrocatalytic oxygen evolution reaction (OER) performance in an acidic and alkaline electrolyte, respectively.

The invention relates to the field of electrocatalysts, in particular to a Ru t-ZrO2 / C electrocatalyst and a preparation method thereof.The preparation method includes the steps that zirconium tetrachloride, terephthalic acid, N, N-dimethylformamide and formic acid are put into a polytetrafluoroethylene lining to be subjected to a solvothermal reaction, and after the temperature is cooled to the room temperature, centrifugal washing and vacuum drying are conducted through DMF and methyl alcohol to obtain UiO-66 powder; secondly, dispersing the UiO-66 powder in methanol, adding ruthenium trichloride, stirring, centrifugally washing with methanol, and drying in vacuum to obtain a precursor Ru-UiO-66; and finally, sintering the precursor Ru (at) UiO-66 in a tubular furnace under an argon condition to obtain the Ru (at) t-ZrO2 / C electrocatalyst. According to the present invention, the strong interaction between the Zr-Ru bimetallic sites is combined with the strong conductive structure formed by ZrO2 and the carbon substrate, such that the prepared electrocatalyst has characteristics of low loading amount of the noble metal Ru cluster, excellent structure stability, high active site utilization rate, and efficient electron transfer with the MOFs carrier so as to show the efficient acid-base system electrocatalytic property;

The invention relates to the technical field of medical and chemical medicines, in particular to a novel synthesis method of L (-)-threo-3-hydroxyaspartic acid hydrochloride. The preparation method comprises the following steps: by taking cheap and easily available D-phenylglycinol as an initial raw material, firstly protecting amino with Boc anhydride, then oxidizing to obtain N-BOC-D-phenylalanine aldehyde 3, then carrying out Grignard reaction on the N-BOC-D-phenylalanine aldehyde 3 and vinyl magnesium bromide at low temperature to obtain corresponding o-amino alcohol, then reacting the o-amino alcohol with 2, 2-dimethoxypropane at 0 DEG C under the catalytic action of p-toluenesulfonic acid, and finally obtaining the 2, 2-dimethoxypropane. The obtained compound 4 is subjected to Upjohn dihydroxylation reaction and sodium periodate oxidation to obtain corresponding aldehyde, and then the aldehyde is oxidized by potassium permanganate under a weak acidic condition to obtain corresponding carboxylic acid 5. Oxidizing a benzene ring by taking ruthenium trichloride as a catalyst and sodium periodate as a co-oxidant to obtain dicarboxylic acid; and finally, refluxing and deprotecting by using hydrochloric acid to obtain the L (-)-chloro-3-hydroxyaspartic acid hydrochloride.

The invention provides a carbon-supported ruthenium-doped iron-based phosphide electrocatalyst as well as a preparation method and application thereof, and belongs to the field of electrocatalytic materials. The method comprises the following steps: mixing ruthenium trichloride, ferric trichloride and phenylphosphonic acid, and carrying out a coordination reaction to obtain an MOFs precursor; performing ultrasonic washing and purification on the obtained MOFs precursor to obtain a pure product; and placing the obtained pure product in a tubular furnace for calcination and carbonization to obtain the carbon-supported ruthenium-doped iron-based phosphide electrocatalyst. The invention also provides the carbon-supported ruthenium-doped iron-based phosphide electrocatalyst obtained by the preparation method. The carbon-supported ruthenium-doped iron-based phosphide provided by the invention has excellent electro-catalytic performance, and the overpotential for realizing electro-catalytic reduction hydrogen evolution is relatively low.

The application belongs to the technical field of hydrogen production catalysts for electrolysis of water, and particularly relates to a preparation method of a nitrogen-doped carbon quantum dot loaded ruthenium-based hydrogen evolution electrocatalyst, which comprises the following steps: (1) taking alkali lignin and urea, adding them into deionized water, mixing uniformly, then adding ruthenium trichloride, mixing uniformly, and performing hydrothermal reaction to obtain a precursor; (2) after the precursor is reduced to room temperature, freeze-drying and annealing are performed to obtain the nitrogen-doped carbon quantum dot loaded ruthenium-based hydrogen evolution electrocatalyst. The electrocatalyst prepared by the method has high catalytic activity and stability, and can particularly exhibit excellent catalytic performance in a full pH range (including acid, neutral and alkaline conditions, i.e. 0-14 pH values).

The invention belongs to the technical field of electro-catalytic materials, and particularly relates to a preparation method of a selenium-doped ruthenium oxide catalyst with oxygen vacancy spatial distribution regulated and controlled by urea and application of the selenium-doped ruthenium oxide catalyst in a proton exchange membrane water electrolysis device. Ruthenium trichloride, selenium powder and urea are mixed and ground, the mixture is heated to 500 DEG C in air, heat preservation is carried out for 3 hours, and calcination is carried out. The activity of the obtained Ur-Se-RuOx of which the oxygen vacancy is far away from the selenium doping atom in an acidic OER is obviously superior to that of Se-RuOx, the voltage is only 1.62 V under 1A cm <-2 > in a PEMWE test, and the Ur-Se-RuOx can stably run for more than 1000 hours under 200 mA cm <-2 >. According to the invention, controllable adjustment of oxygen vacancy space distribution in the element-doped metal oxide is realized for the first time, the problem of insufficient stability of traditional element-doped RuO2 is solved, and the method has the advantages of cheap raw materials, simple process and easy industrialization.

The application discloses an organic complex of different metals LTG-RuCe and a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the organic complex of different metals LTG-RuCe comprises the following steps: synthesizing a ligand HL by using methyl formylbenzoate, 2-acetylpyridine, ethanol, potassium hydroxide and ammonia water; synthesizing a ligand [Ru(HL)2]·(PF6)2 by using trichlororuthenium, the ligand HL, methanol, potassium hydroxide and HPF6; and synthesizing the organic complex of different metals LTG-RuCe by using cerium nitrate hexahydrate, the ligand [Ru(HL)2]·(PF6)2 and N,N-dimethylformamide. The organic complex of different metals LTG-RuCe synthesized by the application has high CO2 catalytic activity, good repeatability and a structure which is not easy to collapse; and the method for preparing the organic complex of different metals provided by the application has high yield and strong operability.

The present invention relates to the field of catalytic technology, and particularly relates to a Ru / WO 3‑x heterojunction catalyst, and the chemical formula of the catalyst is Ru / WO 3‑x , where x represents oxygen vacancies; Ru is loaded on the WO 3‑x support surface in the form of metallic element, and the preparation method is as follows: using tungstate as the tungsten source, ammonium sulfate as the morphology assistant, ruthenium trichloride as the ruthenium source, adjusting the pH to 0-2, adding deionized water to prepare a hydrothermal reaction solution, and performing a hydrothermal reaction together with the current collector, rinsing with deionized water and drying, and calcining in a reducing gas atmosphere to obtain the Ru / WO 3‑x heterojunction catalyst integrated electrode. Under the same test conditions, the present invention can effectively inhibit the over-hydrogenation of nitrate to the final product ammonia, and make the product stay at the intermediate hydroxylamine.

This invention discloses a Ru@Zr x Hf y This invention relates to the field of electrocatalysts and its preparation method. The method includes weighing x mmol zirconium tetrachloride, y mmol hafnium tetrachloride, and 1 mmol terephthalic acid, dissolving them in 40–60 mL of DMF to form solution A; adding 3–5 mL of formic acid to solution A to form solution B and then sonicating the solution; subjecting solution B to a hydrothermal reaction to obtain product C; washing and centrifuging product C with a mixed solvent and then drying it under vacuum to obtain powder; dispersing 200 mg of the powder in 30–40 mL of methanol to form solution D; dispersing 0.1–0.3 mmol ruthenium trichloride powder in solution D and stirring to obtain solution E; washing and centrifuging solution E and then drying it under vacuum to obtain a precursor; heating the precursor to 700 °C and holding it for 2–3 h, then cooling it to 300 °C and allowing it to cool naturally to room temperature to obtain Ru@Zr. x Hf y O2 / C electrocatalyst. It solves the problems of high cost of Pt-based catalysts, easy agglomeration and structural damage of traditional Ru-based catalysts, and poor stability due to interference from corrosive ions in seawater electrolysis.

The present application relates to the technical field of noble metal production, and discloses a drying method for preparing beta-type ruthenium trichloride, which adopts a drying and stirring device and comprises the following steps: step 1, beta-type ruthenium trichloride solution is added into a tank; step 2, a driving motor drives a stirring shaft to stir the solution at a rotating speed of 150-180 r / min, and meanwhile, an infrared lamp is used to heat the solution until the solution is skinned; step 3, when the solution is skinned, the rotating speed of the driving motor is adjusted to 100-120 r / min, the infrared lamp continues to heat, and the solution is slurried; step 4, when the solution is slurried, the rotating speed of the driving motor is adjusted to 50-80 r / min, the infrared lamp continues to heat, and the solution is agglomerated. Different rotating speeds of the motor are adopted at different stages of the material, the heat transfer efficiency of the material is ensured, the drying efficiency is accelerated, and the material consumption and energy consumption are reduced.

The invention provides a preparation method of ethylene sulfate in order to solve the problems that in the prior art, ethylene glycol, thionyl chloride, sodium hypochlorite and ruthenium trichloride are used for preparing ethylene sulfate, cost is high, operation is complex, generated waste brine has adverse effects on the environment, and sodium ions and chloride ions in ethylene sulfate easily exceed standards. Comprising the following steps: mixing and heating concentrated sulfuric acid and ethylene glycol to carry out esterification reaction, continuously bubbling and introducing sulfur trioxide gas into a mixed solution composed of the concentrated sulfuric acid and the ethylene glycol in the esterification reaction process, and after the esterification reaction is finished, carrying out post-treatment to obtain the ethylene sulfate. According to the preparation method of the ethylene sulfate provided by the invention, the cost is low on the basis of obtaining higher yield, the technological process is simple to operate, the reaction conditions are milder, a dehydrating agent is not needed, sulfur trioxide can be recycled, three wastes are less, sodium ion and chloride ion impurities are not contained, and the purity of the ethylene sulfate is high.

The present invention relates to a self-supporting ruthenium / cobalt oxyhydroxide electrocatalyst, a preparation method, and an application thereof. The preparation method comprises: step 1, preparing a self-supporting ultrathin cobalt-based nanosheet precursor by a thermal synthesis method; step 2, using the self-supporting ultrathin cobalt-based nanosheet precursor as a working electrode and preparing a self-supporting ultrathin cobalt oxyhydroxide nanosheet by an anodic oxidation method; and step 3, using the self-supporting ultrathin cobalt oxyhydroxide nanosheet as a working electrode to prepare a self-supporting ruthenium / cobalt oxyhydroxide electrocatalyst, wherein the electrolyte is an aqueous solution containing hydrated ruthenium trichloride. The self-supporting ruthenium / cobalt oxyhydroxide electrocatalyst and preparation method provided by the present invention overcome the problems of low efficiency, high cost, low catalytic activity, poor stability, and difficulty in industrial production.

The invention discloses a Ru / MoO3-x-rGO photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of nano materials. Aiming at the problem of low hydrogenation reaction rate caused by lower solubility of H2 in water in hydrogenation reaction in the current photocatalytic hydrolysis technology, firstly, molybdenum powder and graphene oxide are used as raw materials, a solvent and a structure regulator are added, a hydrothermal method is utilized to load nano spherical MoO3-x on rGO, a MoO3-x-rGO material is prepared, ruthenium trichloride is used as a raw material, and the MoO3-x-rGO material is prepared. Ru is directionally deposited on MoO < 3-x > through a chemical reduction method, and Ru / MoO < 3-x >-rGO photocatalyst powder with the capacity of constructing a hydrogen-rich microenvironment is prepared and applied to photocatalytic hydrogenation reaction in situ. According to the present invention, the water photolysis hydrogen evolution technology, the in-situ hydrogen storage technology and the in-situ hydrogenation technology are successfully combined, such that the in-situ generation, the transfer, the storage and the conversion of the atomic hydrogen are achieved, the problems of H2 transportation consumption, cracking energy consumption, low solubility and the like in the existing hydrogenation reaction are avoided, and the potential safety hazard and the use cost are reduced.

This invention discloses an efficient method for preparing p-cymene ruthenium iodide dimer. The method uses ruthenium trichloride as the ruthenium source, propylterpinene as the ligand precursor, and an alcohol solvent as the reaction medium. The target product is synthesized efficiently through a two-step continuous reaction. First, ruthenium trichloride and propylterpinene are reacted at a specific temperature to generate a dichloro(p-cymene)ruthenium dimer intermediate. Then, an iodide aqueous solution is added for reflux reaction to complete the replacement of chloride ions with iodide ions. Finally, high-purity p-cymene ruthenium iodide dimer is obtained after simple post-processing. This invention innovatively uses propylterpinene instead of traditional phellandrene, significantly improving the stability and purity of the raw materials and reducing production costs. The one-step integrated process simplifies the operation process, avoids the risk of organic vapor exposure, and improves production safety. Optimized reaction parameters and material ratios achieve a product yield of up to 99.8%, and the process is adaptable to large-scale production requirements.

The invention belongs to the technical field of preparation of polyoxometallate materials, and discloses a polyoxometallate nano-catalyst constructed by a trinuclear ruthenium cluster and application of the polyoxometallate nano-catalyst. The preparation method of the catalyst comprises the following steps: adding Keggin type polyacid, ruthenium trichloride and a 1, 2, 4-triazole ligand into a buffer solution, and inducing coordination of the polyacid, ruthenium and 1, 2, 4-triazole to perform self-assembly under a hydrothermal condition by precisely regulating and controlling the pH value of the solution so as to form a trinuclear ruthenium cluster active center. The catalyst provided by the invention can be applied to a reaction process for preparing urea through electro-catalysis C-N coupling, and has high yield and high selectivity.

The invention discloses a preparation method of a vanadium-doped ruthenium oxide PEM electrolyzed water anode OER catalyst. The preparation method comprises the following steps: dissolving ruthenium trichloride hydrate and vanadium trichloride in deionized water, and magnetically stirring to obtain a uniform solution; adding a sodium borohydride solution to react until no bubble exists; centrifuging to obtain vanadium-ruthenium alloy, washing with water, centrifuging, and drying; and calcining in a muffle furnace to obtain a product. The method is simple in process, high in universality, excellent in product catalytic activity, outstanding in stability and low in cost, and can promote commercialization of PEMWE.

The invention relates to the technical field of cell catalysts, in particular to a high-activity catalyst for a proton exchange membrane fuel cell and a preparation method of the high-activity catalyst. The preparation method comprises the following steps: firstly, carrying out pretreatment on Ti < 3 > C < 2 > T < x > MXene powder to obtain dispersion liquid; then reducing chloroplatinic acid and ferric nitrate through ascorbic acid by taking the nitrogen-doped carbon-coated platinum-iron alloy as a carrier, and carrying out high-temperature cracking in combination with dicyandiamide to generate a nitrogen-doped carbon-coated platinum-iron alloy in situ; loading iridium oxide on the surface through a hydrothermal method; and finally introducing ruthenium trichloride and phenanthroline, performing high-temperature pyrolysis to form a ruthenium-nitrogen coordination structure, and performing acid pickling, activation and 4-aminophenylboronic acid surface modification to obtain the final catalyst. Through MXene carrier optimization, multi-metal component collaboration and surface modification, the electrocatalytic activity and stability of the catalyst are remarkably improved, dependence on precious metal is reduced, and the catalyst is suitable for efficient operation of the proton exchange membrane fuel cell.