104 results about "Potassium tetrachloroplatinate" patented technology

The invention relates to a platinum-induced aurum core / palladium platinum island-shaped alloy shell structure nanorod solution and a preparation method. The structure consists of a cylindrical aurum nanorod inner core and an island-shaped porous palladium platinum alloy shell coated on the outer surface of the inner core. The preparation method comprises the following steps of: firstly preparing aurum crystal seed solution; secondly, preparing aurum nanorod solution and purifying the aurum nanorod solution; thirdly, mixing the purified aurum nanorod solution, chloropalladate solution and potassium tetrachloroplatinate solution and uniformly shaking the mixture, and adding ascorbic acid water solution into the mixture to obtain mixed solution; and placing the mixed solution in constant-temperature water bath for reaction and then adding hexadecyl trimethyl ammonium bromide water solution into the mixed solution and finally performing the centrifugal separation on the mixed solution to obtain platinum-induced aurum core / palladium platinum island-shaped alloy shell structure nanorod solution. The solution has the advantages of high catalyzing capability, high catalyzing efficiency and high CO poisoning resistance for electrocatalysis oxidation of formic acid, low costs and the like, and is used for directly preparing a formic acid fuel cell catalyst. In addition, the method is simple, low-energy, environmentally-friendly and high-efficiency.

The invention relates to a method for preparing a lobaplatin trihydrate by using oxalate, diaminomethyl cyclobutane oxalate, potassium chloroplatinite and potassium iodide are taken as raw materials, and the method comprises the following steps: firstly replacing the potassium chloroplatinite to potassium iodoplatinite, neutralizing the oxalic acid in diaminomethyl cyclobutane under alkaline condition, enabling the diaminomethyl cyclobutane to be freed, and then reacting the diaminomethyl cyclobutane with K2PtI4 (potassium iodoplatinate) for synthesizing a diiodide; enabling the diiodide to carry out replacement reaction with silver nitrate to generate silver iodide precipitate, enabling reactants after filtering out the precipitate to carry out ion exchange with anion exchange resin, then synthesizing a lobaplatin anhydride with lactic acid, re-crystallizing the anhydride in water / acetone mixed solution, and finally obtaining a lobaplatin trihydrate product. The raw materials used in the method have stable performances, the reaction is fuller and more complete, and the yield of the lobaplatin trihydrate is high.

Disclosed is a method for the production of a potassium platinochloride, which relates to a process for preparing a pharmaceutical intermediate potassium platinochloride. The method of preparation is characterized in that the preparation process adopts a spongy platinum as a material to prepare a chloroplatinic acid solution which is reacted with a potassium chloride solution to prepare the potassium chloroplatinite, then a hydrazine hydrochloride is adopted as a reducing agent to reduce the potassium chloroplatinite for preparing the pharmaceutical intermediate potassium platinochloride. The product adopting the method of the invention has a platinum content of 46.9+-0.2 percent and a potassium content of 19.0+-0.2 percent through a total elemental analysis. The total content of metallic impurity is no more than 0.08 percent.

The invention discloses a hollow platinum-copper-cobalt ternary alloy nanoparticle mimic enzyme and a preparation and application thereof. In the mimic enzyme, nano-particles are of a hollow structure, the Pt / Cu / Co molar ratio in alloy composition is 1.33:1:1, and the average particle size is 32.2+ / -5.1 nm. The preparation method includes the steps that aqueous solutions of potassium chloroplatinate, copper chloride and nickel chloride are mixed, then polyvinylpyrrolidone, glycine and Co3O4 are added, and stirring and ultrasonic treatment are carried out to make the powder fully dispersed; thetemperature is increased to 180-210 DEG C, a constant-temperature reaction is carried out for 6-10 hours, after the reaction is finished, centrifugal separation and washing are carried out to obtainthe alloy nanoparticles, and the alloy nanoparticles are dispersed into water to obtain a platinum-copper-cobalt alloy nanoparticle mimic enzyme solution. The obtained platinum-copper-cobalt alloy nanoparticle mimic enzyme has very high chemical stability under strong acid, strong base, high salinity and high temperature conditions, and has potential application value in the fields of immunoassay,biological detection, clinical diagnosis and the like as a novel mimic enzyme.

The invention provides a platinum (II) alkyne complex and application thereof. The platinum (II) alkyne complex is structurally a platinum (II) alkyne naphthalene imide compound by using bipyridine derivative as a ligand. A preparation method of the platinum (II) alkyne complex comprises the following steps: firstly, enabling potassium tetrachloroplatinate to react with dimethyl sulfoxide to obtain a potassium tetrachloroplatinate-dimethyl sulfoxide complex; secondly, enabling the potassium tetrachloroplatinate-dimethyl sulfoxide complex to react with the bipyridine ligand to a obtain bipyridine platinum (II) chloride complex; finally, performing Sonogashira reaction on the bipyridine platinum (II) chloride complex and alkyne ligand to obtain a series of the bipyridine platinum (II) alkyne naphthalene imide compounds. Test results show that the platinum complexes synthesized by the preparation method have a good optical limiting property and can be applied to nonlinear absorbent materials.

The invention relates to a method for preparing a lobaplatin trihydrate by using oxalate, diaminomethyl cyclobutane oxalate, potassium chloroplatinite and potassium iodide are taken as raw materials, and the method comprises the following steps: firstly replacing the potassium chloroplatinite to potassium iodoplatinite, neutralizing the oxalic acid in diaminomethyl cyclobutane under alkaline condition, enabling the diaminomethyl cyclobutane to be freed, and then reacting the diaminomethyl cyclobutane with K2PtI4 (potassium iodoplatinate) for synthesizing a diiodide; enabling the diiodide to carry out replacement reaction with silver nitrate to generate silver iodide precipitate, enabling reactants after filtering out the precipitate to carry out ion exchange with anion exchange resin, then synthesizing a lobaplatin anhydride with lactic acid, re-crystallizing the anhydride in water / acetone mixed solution, and finally obtaining a lobaplatin trihydrate product. The raw materials used in the method have stable performances, the reaction is fuller and more complete, and the yield of the lobaplatin trihydrate is high.

The invention provides a bell type platinum-based magnetic space confinement catalyst. The bell type platinum-based magnetic space confinement catalyst is a platinum-based magnetic space confinement catalyst which is prepared by taking a Fe3O4 nanoparticle as a core, a thermo-crosslinking poly 3,4-ethylene dioxythiophene / platinum composite material as a hollow shell layer and dispersing and distributing small-sized platinum nanoparticles in the hollow shell layer structure. The preparation method of the catalyst mainly comprises the following steps: synchronously building poly 3,4-ethylene dioxythiophene / platinum composite shell layers on the surfaces of Fe3O4@SiO2 nanoparticles by utilizing redox reaction of a conductive polymer monomer 3,4-ethylene dioxythiophene and noble metal-derivedpotassium chloroplatinite to synthesize a three-layer core-shell structure platinum-based magnetic composite material, crosslinking poly 3,4-ethylene dioxythiophene chains through thermal treatment, and etching by strong base to remove a silicon dioxide middle shell layer to prepare the bell type platinum-based magnetic space confinement catalyst. The synthesis process is simplified, the agglomeration and loss phenomenon of the noble metal nanoparticles in the catalytic process is effectively avoided, the stability of the platinum nanoparticles in the catalytic process is reinforced, and highcatalytic activity is presented.

The invention discloses a platinum (II) coordination complex and a preparing method and application thereof. The preparing method includes the steps that active natural products such as oleanolic acid and ursodesoxycholic acid and derivatives of the active natural products serve as ligand; potassium tetrachloroplatinate(II) and ammonia or (R,R)-cyclohexanediamine are subjected to coordination reaction under the condition of potassium iodide, then iodide ions are removed through silver nitrate under the light shielding condition, and the mixture and sodium salt of ursodesoxycholic acid or oleanolic acid or the derivatives of oleanolic acid are reacted to obtain the product. The platinum (II) coordination complex has the good in-vitro antitumor activity, and can be applied to preparing medicine for treating malignant tumor.

The invention provides a binuclear platinum (II) complex and a preparation method thereof as well as an application thereof as an anti-tumor drug. The binuclear platinum (II) complex provided by the invention is a 5-chlorosalicylaldehyde-3-alkyl-4-amino-5-thio-1,2,4-triazole Schiff base binuclear platinum (II) complex. The preparation method comprises the following steps: dissolving a 5-chlorosalicylaldehyde-3-alkyl-4-amino-5-thio-1,2,4-triazole Schiff base ligand in absolute methanol, dropwise adding triethylamine by equal molar weight, dropwise adding a water solution of potassium tetrachloroplatinate (II) by equal molar weight to an absolute methanol solution of the ligand, stirring, and separating out a solid product. According to the complex, a synthesis method is simple, the structure is simple, and crystals are easily obtained; a cytology test shows that the complex has a remarkable inhibition effect for human cancer cells and can be applied to the preparation of anti-tumor drugs.

The invention relates to a joint preparation method of potassium chloroplatinite and potassium chloroplatinate. The joint preparation method comprises the steps of: completely dissolving metal platinum which is taken as a raw material by aqua regia, and adding hydrochloric acid to remove nitrogen compound to obtain chloroplatinic acid solution; neutralizing the chloroplatinic acid solution by using potassium hydroxide solution until the pH value is 5.5-7.5; adding potassium oxalate for reducing to obtain the potassium chloroplatinite; and separating out crystal, and adding hydrogen peroxide into the rest mother liquor to obtain the potassium chloroplatinate. The joint preparation method can be used for preparing two products by charging for once, is simple in technology and short in process flow, does not generate platinum-containing mother liquor, and is high in platinum utilization rate and good in product quality. The potassium chloroplatinite and the potassium chloroplatinate prepared by the invention are mainly used for manufacturing catalysts, chemically analyzing, preparing platinum-containing complexes and platinum-containing metallorganic compounds and the like, and are widely applied to industries such as military industry, electronic industry, medical industry, etc.

The invention belongs to the field of medical technology, in particular relating to an organic acid platinum salt and the preparation method thereof and the application to the preparation of anti-cancer drugs. The invention obtains the Pt(C6H14N2)Cl2 or Pt(NH3)2Cl2 through the dissolution and reaction of trans-cyclohexanediamine or ammonia and potassium chloroplatinite in water at indoor temperature; the products of the organic platinum salt are obtained through the ways that the Pt(C6H14N2)Cl2 or the Pt(NH3)2Cl2 is suspended in water, and silver nitrate is added into the water and the Pt(C6H14N2)Cl2 or the Pt(NH3)2Cl2 reacts with the silver nitrate at indoor temperature, and the formed AgCl is precipitated, filtered and removed, and the NaOH solution of the organic acid is added into the filtrates and reacts with the filtrates overnight at indoor temperature; wherein, the organic acid is ursolic acid, asiatic acid, betulinic acid, lucidenic acid C, sennoside B or rhein, etc. The anti-tumor effect experiments on mice loading Lewis lung cancer show that the organic acid platinum salt of the invention has the significant anti-tumor effects, so the organic platinum salt can be used for preparing anti-cancer drugs.

The invention discloses a preparation method for a platinum-silver alloy hollow nanoflower. The method comprises the following steps: taking sodium polyacrylate as a stabilizer and taking ascorbic acid as a reducing agent; reducing silver nitrate at the room temperature to synthesize a silver nanoflower; and introducing potassium chloroplatinite as a platinum source through galvanic reducing process, thereby directly obtaining the platinum-silver alloy hollow nanoflower. The preparation method is simple and economical; the obtained platinum-silver alloy hollow nanoflower is regular in shape and is uniform in dimension, has ultrahigh catalytic activity and stability in an alkaline formic acid fuel cell, has a potential application prospect in the fuel cell field, and is suitable for industrial large-scale production.

The invention relates to a preparation method of potassium chloroplatinite. The preparation method mainly comprises the following steps of: dissolving platinum with aqua regia; removing nitre and acid; adding potassium chloride; filtering to obtain potassium chloroplatinate precipitate; adding reductant solution; jointly processing by utilizing 200mW / cm<2> cosine ultrasonic wave under 20 to 25kHz and 200mW / cm<2> variable frequency ultrasonic wave under 35 to 40kHz, and continuously stirring at the same time, thus obtaining potassium chloroplatinite solution. According to the preparation method of the potassium chloroplatinite, the specific ultrasonic cavitation effect is utilized to promote the reaction process of reducing potassium chloroplatinate through potassium formate, thus the reaction time is shortened, the reaction is complete, and the yield of potassium chloroplatinite is increased.

The invention discloses a synthesis method of tetraamminepalladium sulfate (II). The method is composed of the following steps: dissolving potassium tetrachloroplatinate and ammonium acetate in water, then carrying out reflux reaction to synthesize cis-diamminedichloropalladium (II); reacting the cis-diamminedichloropalladium (II) with ammonia water to generate a tetraamminepalladium sulfate (II) compound. The method provided by the invention is easy to operate, can effectively remove chlorine ions, and has yield up to more than 90%.

The invention provides a cocatalyst for producing hydrogen through photocatalytic water splitting. The cocatalyst is composed of Pt and Ni, wherein the mass ratio of Pt to Ni is (1-4):1. The invention further provides a preparation method of the cocatalyst. The method comprises the steps that potassium tetrachloroplatinate, nickel acetylacetone, polyvinylpyrrolidone and sodium iodide are weighed, dissolved in N,N-dimethylformamide, subjected to uniform ultrasonic dispersion and transferred into a high pressure reactor, the solution undergoes a hydrothermal reaction at the temperature of 150 DEG CC, the product is subjected to ultrasound treatment and centrifugal cleaning with a mixed solution of ethanol and acetone and washed again with NaBH4 / TBA, and after CdS is loaded, a photocatalyst loaded with the PtNi alloy cocatalyst is obtained. A hydrothermal method is adopted for controlling synthesis of different Pt-Ni ratios, the method is simple, feasible and high in efficiency, the synergistic effect among different kinds of metal is utilized, and the photocatalytic activity of the catalyst reaches two times or above compared with a catalyst prepared through a traditional method.

This invention relates to a method for preparing a super thin film of a nm structure, which inserts a carbon electrode with 4-aminobenzoate functional process into polydiene propyl dimethyl ammonia chloride solution for electrostatic assembly of polyelectrolyte to be dipped in gel Pt solution after cleaned and undergone with nm particle assembly. Said electrode is immersed into AgH2SO4 solution for electrochemical scanning to deposit Ag layers under potential on Pt nm particle surface and is transferred into the perchloric acid solution containing potassium chloroplatinite to be dipped in open circuit. The electrode is cleaned and two reactions of under potential deposition / oxidation-reduction and displacement are repeated to get a Pt nm particle single layer membrane electrode decorated by multiple deposited Pt super-thin layers.

The invention discloses a preparation method of potassium chloroplatinite. The method comprises the following steps: by adopting a waste material namely tetraammineplatinum tetrachloroplatinate always generated in a platinum complex synthesis process as a raw material, performing heating reflux reaction in concentrated hydrochloric acid, filtering to obtain filtrate, and reacting the filtrate with potassium chloride to generate potassium chloroplatinite. The method disclosed by the invention can be used for improving the utilization rate of platinum, reducing the production cost, and reducing the environmental pollution.

The invention relates to a preparation method of dichloro(1,5-cyclooctadiene) platinum (II). The preparation method comprises the following steps: reacting potassium tetrachloroplatinate and ligand 1,5-cyclooctadiene (COD) with a n-propyl alcohol mixed solution in water by adding a phase transfer catalyst PEG-400 to generate the milk white precipitate dichloro(1,5-cyclooctadiene) platinum (II), wherein the mole ratio of the potassium tetrachloroplatinate to the ligand 1,5-cyclooctadiene (COD) is 1: 6.4, the volume ratio of n-propyl alcohol to deionized water is 1: 0.1, and the volume ratio of PEG-400 to COD is 1.0: 1; maintaining the reaction for 4h at the reaction temperature of 50 DEG C, performing suction filtration on the milk white precipitate, washing with absolute ethyl alcohol and water, and drying to obtain the reaction product dichloro(1,5-cyclooctadiene) platinum (II). The product yield is 90% to 95%. A solvent and platinum are recycled respectively after the treatment of a filter liquor through a rotary evaporator.

The invention discloses a preparation method of a visible light response type platinum / black phosphorus / oxygen-deficient bismuth tungstate composite material, which comprises the following steps of: (1) heating and stirring a two-dimensional black phosphorus nanosheet and a potassium chloroplatinite solution under the protection of nitrogen, and adding ammonia water and a formaldehyde solution toobtain an ethanol solution of the platinum-modified two-dimensional black phosphorus nanosheet, (2) putting the bismuth tungstate nanosheet into a sodium hydroxide solution, and stirring to obtain anoxygen-deficient bismuth tungstate nanosheet, and (3) mixing the oxygen-deficient bismuth tungstate nanosheet with an ethanol solution of the platinum-modified two-dimensional black phosphorus nanosheet, and stirring to obtain the platinum / black phosphorus / oxygen-deficient bismuth tungstate composite material. The invention also discloses the visible light response type platinum / black phosphorus / oxygen-deficient bismuth tungstate composite material prepared by the method and application thereof. The visible light response type platinum / black phosphorus / oxygen-deficient bismuth tungstate composite material has the advantages of high light absorption efficiency, favorable catalytic effect and stable performance, can be repeatedly utilized, and has a high-efficiency photocatalytic effect on hydrogen production by photolysis of water.

The invention belongs to the field of precious metal metallurgy, and particularly relates to a method for preparing trichloromonoammine potassium platinate through an ultrasonic method. The preparation method comprises the following steps: carrying out ball milling on potassium chloroplatinite, soaking with a proper amount of HCl, filtering, and dissolving pretreated potassium chloroplatinite in water for later use; placing the obtained potassium chloroplatinite aqueous solution in an ultrasonic field to be oscillated, heating during oscillation, adding an ammonium acetate aqueous solution, increasing the temperature of the system, and performing continuous oscillation continues for 20-30 min; filtering to obtain directly recovered potassium trichloroplatinate, and reserving the filtrate for later use; adding Pt (NH3) 4Cl2 into the filtrate to generate a [Pt (NH3) 4][PtCl4] precipitate, filtering and drying the [Pt(NH3)4][PtCl4] precipitate; drying, mixing with potassium chloroplatinite, grinding to green, dissolving in cold water, and grinding. According to the preparation method provided by the invention, the potassium chloroplatinate is subjected to particle size refining and acidification pretreatment, and the whole reaction system is synthesized in an ultrasonic field, so that the direct yield, the total yield and the content of the potassium trichloroplatinate are improved, and the preparation method is suitable for industrial production.

The invention relates to a polysubstituted phenylquinoline platinum (II) complex which is expressed in the structural formula shown in the specification. The complex is prepared through the following steps of: utilizing a C<N> bidentate ligand-2-aryl-polysubstituted quinoline to react with potassium chloroplatinite so as to obtain a platinum (II) chlorendic dimmer of the corresponding ligand, and utilizing the platinum (II) chlorendic dimmer to react with acetylacetone so as to prepare the complex. The target platinum (II) complex prepared by the method can serve as electroluminescent phosphorescent materials and doped phosphorescent materials to be applied to organic electroluminescent devices, and the substituent groups of different electron-withdrawing groups and electron-donating groups are introduced so as to regulate the phosphorescent light color of the target complex, so that the complex can emit from yellow lights to orange yellow lights and orange red lights.

The invention discloses a preparation method of lobaplatin trihydrate, which comprises the following steps: by using potassium chloroplatinite, potassium iodide and trans-1,2-diaminomethylcyclobutanehydrochloride as raw materials and water as a solvent, replacing potassium chloroplatinite with potassium iodo-platinite, and reacting potassium iodo-platinite with trans-1,2-diaminomethylcyclobutanewhich is dissociated from the 1,2-diaminomethylcyclobutane hydrochloride under an alkaline condition through neutralization to generate a diiodide; and refining the diiodide, carrying out hydrolysis reaction on the refined diiodide and silver nitrate, filtering out generated silver iodide precipitate, reacting filtrate with sodium lactate to generate a lobaplatin anhydrous substance, and recrystallizing the lobaplatin anhydrous substance in an acetone-water mixed solvent to obtain the lobaplatin trihydrate. The method has the advantages of short synthesis time and simple operation, the precursor chemical acetone involved in the reaction process can be recycled, and the obtained lobaplatin trihydrate has the advantages of high purity, high yield and good stability, and is suitable for industrial production.

The invention discloses a preparation method of high-activity potassium chloroplatinite, and belongs to the field of noble metal metallurgy. Aiming at problems of the conventional preparation method of potassium chloroplatinite, a novel method which is simple, efficient, high in purity of potassium chloroplatinite purity and high in platinum content is developed, thereby overcoming deficiencies ofthe traditional production technology, improving the content of platinum in potassium chloroplatinite while shortening the preparation period through the selection of new reducing agent hydrazine hydrochloride, hydrazine monohydrochloride and potassium oxalate. The method can greatly reduce precipitated precipitate during reaction, and ensures the platinum content is increased to be greater than47.2 percent, and the product purity can reach greater than 99.5 percent.

The invention discloses a method for synthesizing tetraammine platinum (II) sulfate, which consists of the following steps: after dissolving potassium chloroplatinite and ammonium acetate in water, cis-dichlorodiamine platinum (II) is produced through reflux reaction ); cis-dichlorodiammine platinum (II) reacts with ammonia water to generate dichlorotetraammine platinum (II); after dichlorotetraammine platinum (II) is dissolved in sulfuric acid water, HCl is obtained after reflux reaction to remove HCl Platinum(II) Tetraammine Sulfate. The invention has simple operation, can effectively remove chloride ions, and the yield is greater than 90%.

The invention relates to an aryl five-membered heterocyclic substituted quinoline platinum (II) complex which is as shown in the following structural formula. The complex is prepared according to the following steps: utilizing a C<N> bidentate ligand- aryl five-membered heterocyclic substituted quinoline to react with potassium chloroplatinite so as to obtain a platinum (II) chlorendic dimmer of the corresponding ligand, and utilizing the platinum (II) chlorendic dimmer to react with acetylacetone so as to prepare the complex. The target platinum (II) complex prepared by the method can serve as electroluminescent phosphorescent materials and doped phosphorescent materials to be applied to organic electroluminescent devices, and the substituent groups of different electron-withdrawing groups and electron-donating groups are introduced so as to regulate the phosphorescent light color of the target complex, so that the complex can emit red lights.

The invention discloses a liver tumor cell inhibitor and a preparation method thereof. The inhibitor has chirality and is a complex named as dichloro-2-[2-(hydroxyl)-3-(methoxy)-phenyl]imidazo[4,5-f][1,10]-phenanthroline.S,S-cyclohexanediamine platinum (II). The preparation method comprises the following steps: preparing 2-[2-(hydroxyl)-3-(methoxy)-phenyl]imidazo[4,5-f][1,10]-phenanthroline from [1,10]-phenanthroline-5,6-dione and 2-hydroxyl-3-methoxybenzaldehyde; then adding potassium chloroplatinite to prepare 2-[2-(hydroxyl)-3-(methoxy)-phenyl]imidazo[4,5-f][1,10]-phenanthroline.dichloroplatinum (II); and finally adding cyclohexanediamine so as to obtain the liver tumor cell inhibitor. The complex provided by the invention has excellent antineoplastic activity and is applicable to anti-hepatoma drugs.

The invention discloses a chiral platinum complex and a preparation method thereof. The complex, namely dichloride-2-[2-(hydroxyl)-4-(methoxyl)-phenyl] imidazo[4,5-f][1,10]-phenanthroline.S, S-cyclohexanediamine platinum (II) has chirality. The preparation method comprises the following steps: preparing 2-[2-(hydroxyl)-4-(methoxyl)-phenyl] imidazo[4,5-f][1,10]-phenanthroline by taking 1,10-phenanthroline-5,6-dione and 2-hydroxyl-4-methoxybenzaldehyde as raw materials; adding potassium chloroplatinite to prepare 2-[2-(hydroxyl)-4-(methoxyl)-phenyl] imidazo[4,5-f][1,10]-phenanthroline.platinum (II) dichloride; finally adding cyclohexanediamine, thereby obtaining the chiral platinum complex disclosed by the invention. The complex has the characteristic of excellent anti-tumor activity, and can be applied to drugs resistant to the liver cancer, the lung cancer and the gastric cancer.

The invention provides a method for preparing dichloro(1,5-cyclooctadiene)platinum(II) and relates to a method for preparing a platinum group metal compound which is used in an addition reaction of silicon and hydrogen for preparing an organic silicon compound and takes 1,5-cyclooctadiene as the ligand. The method is characterized in that a preparation process comprises reacting potassium chloroplatinite with 1,5-cyclooctadiene (COD) serving as the ligand in mixed solvent of water and normal propyl alcohol to obtain dichloro(1,5-cyclooctadiene)platinum(II) milky precipitate and obtaining the reaction product dichloro(1,5-cyclooctadiene)platinum(II) by suction filtration, washing with absolute ethanol and water and drying, wherein the temperature is controlled to be 60 to 90 DEG C in a reaction process, and the reaction time is 3 to 4 hours. The key technical point of the preparation method provided by the invention is to raise the reaction temperature to 60 to 90 DEG C and reduce the reaction time to 3 to 4 hours from 48 hours reported in documents. Thus, the reaction time is reduced effectively, and raw material waste and environmental damage are reduced.

The invention discloses a preparation method of a gold-platinum-silver material with an asymmetric structure. The preparation method mainly comprises the following steps of firstly, growing a gold nanorod by using a seed growth method, then cleaning the successfully grown gold nanorod to obtain a gold nanorod with higher purity, then taking the gold nanorod as a seed, adding a corresponding amount of surfactant and potassium tetrachloroplatinate, uniformly mixing, and controlling the reaction temperature, so that platinum successfully grows on the two ends of the gold nanorod, then cleaning a gold-platinum structure to obtain gold-platinum with higher purity, taking the gold-platinum as a new seed, adding a corresponding amount of the surfactant, silver nitrate and ascorbic acid solution, controlling the reaction temperature to finally obtain the asymmetric growth gold-platinum-silver material, and observing the growth condition through a transmission electron microscope. The gold-platinum-silver material with the asymmetric structure synthesized by the preparation method is uniform in growth; the preparation method has simple reaction conditions, high reaction rate and low cost.