Preparation method of sonochemistry-assisted nano material

Abstract

The invention discloses a preparation method of a sonochemistry-assisted nano material, in the presence of a solvent, alkali is used for adjusting the solvent to be alkaline, metal salts are mixed, mixing reaction is carried out under sonochemistry assistance, the nano material can be PtCu, PtCo, PtNi, PtPd, PtRu, PtIr, PdCu, PtCuAu, PtCuIr or PtCuPd alloy nano material, and the nano material can be one or more of PtCu, PtCo, PtNi, PtPd, PtRu, PtIr, PdCu, PtCuAu, PtCuIr and PtCuPd alloy nano materials. The solvent is ethylene glycol, isopropanol, an isovolumetric mixture of ethylene glycol and water or an isovolumetric mixture of ethylene glycol and isopropanol. The sonochemistry-assisted synthesis method disclosed by the invention can be used for synthesizing various platinum-based and palladium-based binary and ternary alloy nano materials, is mild in condition and rapid in reaction, does not need to add an additional surfactant, and is a simple, convenient and efficient preparation method for synthesizing the platinum-based and palladium-based alloy nano materials.

Description

Technical Field

[0001] This invention relates to the field of nanomaterial synthesis, and more specifically to a method for preparing nanomaterials with sonochemistry assistance. Background Technology

[0002] Platinum-based and palladium-based nanomaterials exhibit superior performance in industrial catalysis and energy conversion due to their unique electronic structures and surface effects. Platinum-based binary and ternary alloy nanomaterials can achieve synergistic optimization of electronic and geometric effects through compositional control, significantly improving catalytic activity and stability while reducing the amount of precious metals used to alleviate resource scarcity. The development of methods for preparing platinum-based binary and ternary alloy nanomaterials is directly related to breakthroughs in energy structure transformation and environmental protection technologies, possessing significant academic value and industrial implications.

[0003] Currently, traditional methods for preparing platinum-based and palladium-based binary and ternary alloy nanomaterials still have many limitations. While traditional chemical reduction methods are simple to operate, the varying reduction rates of metal ions in the reaction system can easily lead to segregation of different components. Furthermore, the need for multiple reducing agents and surfactants can result in complex post-processing. In addition, traditional chemical reduction methods suffer from excessively long reaction times. Hydrothermal / solvothermal methods require high temperature and pressure conditions, resulting in high energy consumption and demanding equipment requirements. Although vapor deposition can prepare high-purity nanomaterials, it suffers from low yield and high cost, making it difficult to meet the needs of large-scale production. Sonochemical synthesis technology utilizes the ultrasonic cavitation effect to generate a localized high-temperature and high-pressure environment. For example, the existing technical literature "Accelerated sonochemical fabrication of MIn2S4 (M=Zn, Mg, Ni, Co) for ultra-high photocatalytic hydrogen peroxide production" (YP Yang et al., Ultrasonics Sonochemical 2024) reports a sonochemical reduction method for synthesizing nanomaterials suitable for photocatalytic hydrogen peroxide production, providing a new approach for nanomaterial preparation. Sonochemical synthesis technology has advantages such as mild reaction conditions, high mass transfer efficiency, and rapid reaction. However, current sonochemical-assisted preparation methods still face key technical bottlenecks in the synthesis of binary and ternary platinum-based and palladium-based nanomaterials: the reduction kinetics of different metal ions in an ultrasonic field are difficult to balance, easily leading to uneven distribution of different elements; there is a lack of precise means to control the morphology of nanomaterials, making it difficult to directionally prepare specific single morphological structures, while the morphology of nanomaterials is the core factor determining the number of catalytic active sites; surfactants need to be added to the reaction system to inhibit particle aggregation, which can easily clog active sites.

[0004] Therefore, it is an urgent need to develop an efficient sonochemical-assisted reduction preparation method that can achieve uniform composition and controllable morphology of platinum-based and palladium-based binary and ternary nanomaterials to solve the current technical pain points. Summary of the Invention

[0005] The purpose of this invention is to provide a sonochemical-assisted method for preparing nanomaterials, which solves the limitations of existing methods for preparing platinum-based, palladium-based binary and ternary alloy nanomaterials, such as easy component segregation and long synthesis time, as well as the technical problems of uneven element distribution, difficulty in preparing specific morphologies, and dependence on surfactants in current sonochemical preparation methods.

[0006] In one aspect of the present invention, a method for preparing sonochemically assisted nanomaterials is provided. According to an embodiment of the present invention, in the presence of a solvent, the solvent is adjusted to alkalinity with an alkali, and metal salts are mixed and reacted under sonochemical assistance. The nanomaterials may be PtCu, PtCo, PtNi, PtPd, PtRu, PtIr, PdCu, PtCuAu, PtCuIr, or PtCuPd alloy nanomaterials. The solvent is an equal-volume mixture of ethylene glycol, isopropanol, or any one of ethylene glycol and water, or an equal-volume mixture of ethylene glycol and isopropanol.

[0007] In addition, the method for preparing sonochemically assisted nanomaterials according to the above embodiments of the present invention may also have the following additional technical features:

[0008] In some embodiments of the present invention, the alkali is sodium hydroxide or potassium hydroxide, preferably sodium hydroxide.

[0009] In some embodiments of the present invention, the metal salt is a mixture of various salts selected from platinum, copper, cobalt, nickel, palladium, ruthenium, gold, and iridium.

[0010] In some embodiments of the present invention, and / or, the platinum salt is one or more of chloroplatinic acid, potassium chloroplatinate, potassium chloroplatinate and platinum acetylacetonate, preferably chloroplatinic acid, potassium chloroplatinate or platinum acetylacetonate, and more preferably chloroplatinic acid;

[0011] And / or, the copper salt is one or more of copper nitrate, copper chloride and copper sulfate, preferably copper nitrate;

[0012] And / or, the cobalt salt is one or more of cobalt nitrate and cobalt chloride, preferably cobalt nitrate;

[0013] And / or, the nickel salt is one or more of nickel nitrate and nickel chloride, preferably nickel nitrate;

[0014] And / or, the palladium salt is one or more of palladium nitrate, palladium chloride, potassium chloropalladate, potassium chloropalladate, and palladium acetylacetonate, preferably palladium chloride;

[0015] And / or, the ruthenium salt is one or more of ruthenium chloride and ruthenium acetylacetonate, preferably sodium chloroiridate;

[0016] And / or, the iridium salt is one or more of sodium chloroiridate, iridium nitrate and chloroiridic acid, preferably sodium chloroiridate;

[0017] And / or, the gold salt is one or more of chloroauric acid, sodium chloroaurate and gold nitrate, preferably chloroauric acid.

[0018] In some embodiments of the present invention, the alkali and solvent are first mixed, and then a metal salt solution is added to form a mixed solution. The solution is then sealed and aged, followed by sonochemical-assisted reduction.

[0019] In some embodiments of the present invention, the concentration of the metal salt is 0.001~0.002 mol / L.

[0020] In some embodiments of the present invention, in a sonochemically assisted mixed reaction:

[0021] The intensity of ultrasound is 40%~80%;

[0022] And / or, the mixing reaction time is 5 to 35 min, preferably 10 to 20 min;

[0023] And / or, the mixture reaction may further include washing and drying. The washing may be performed using conventional methods in the art, generally including centrifuging the liquid obtained after the mixture reaction to separate the solid and liquid phases, redispersing the solid product in the solvent, stirring thoroughly, and then centrifuging again to separate the solid and liquid phases. This process is repeated 2-3 times to remove any remaining impurities from the surface of the solid product.

[0024] The solid-liquid separation device can be a conventional centrifuge device in this field.

[0025] In some embodiments of the present invention, the solvent used for washing is an alcohol solvent;

[0026] And / or, the washing process further includes a centrifugation operation;

[0027] And / or, the drying time is 24~48 h.

[0028] In some embodiments of the present invention, the centrifugation speed is 5000~10000 rpm, preferably 8000~10000 rpm, and the time is 3~10 min, preferably 5~8 min.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) The sonochemical-assisted preparation method of the present invention can prepare a variety of platinum-based and palladium-based binary and ternary alloy nanomaterials. The obtained nanomaterials have uniform element distribution, and the process is simple, the reaction is rapid, the conditions are mild, and it is green and environmentally friendly, making it easy to achieve large-scale production.

[0031] (2) The sonochemical-assisted preparation method of the present invention can obtain nanomaterials with uniform and specific morphology. The prepared nanomaterials have ultra-fine size, thereby improving the active specific surface area of ​​the catalyst.

[0032] (3) The sonochemical-assisted preparation method of the present invention utilizes the alkaline alcohol solvent system itself as a morphology guide agent, combined with the extreme mixing and dispersion effect generated by ultrasonic cavitation, to achieve effective control of the morphology and size of alloy nanomaterials without the need to add any exogenous surfactants. This simplifies the post-processing steps and avoids the problem of catalyst surface active sites being blocked due to the easy adsorption and residue of surfactants.

[0033] (4) This invention utilizes the acoustic cavitation effect generated by sonochemistry to create localized instantaneous high pressure and high temperature in the reaction system, thereby forcing metal ions to be reduced synchronously and rapidly, avoiding segregation of metals with different reduction rates. The rapid reaction kinetics can also significantly shorten the preparation time of nanomaterials, solving the limitations of existing methods for preparing platinum-based and palladium-based binary and ternary alloy nanomaterials, which are prone to component segregation and have long synthesis times. In addition, the alkaline environment can make the reduction potential of transition metal precursors and noble metal platinum and palladium ions closer, ensuring that the product has a uniform elemental distribution. At the same time, the introduction of alcohols, which have the functions of reducing agents and morphology guiding agents, avoids the use of other surfactants, creating conditions for the preparation of single morphologies, thus solving the technical problems of uneven elemental distribution, difficulty in preparing specific morphologies, and dependence on surfactants in current sonochemical preparation methods. Attached Figure Description

[0034] Figure 1 The images are transmission electron microscope (TEM) images of PtCu nanomaterials under different magnifications in Example 1 of the present invention: (a) 50 nm, (b) 20 nm.

[0035] Figure 2The images are transmission electron microscope (TEM) images of PtCu nanomaterials in Example 2 of the present invention, (a) 50 nm, (b) 20 nm;

[0036] Figure 3 The images are transmission electron microscope (TEM) images of PtCu nanomaterials in Example 3 of the present invention, (a) 50 nm, (b) 20 nm;

[0037] Figure 4 The images are transmission electron microscope (TEM) images of PtCu nanomaterials in Example 4 of the present invention, (a) 50 nm, (b) 20 nm;

[0038] Figure 5 These are transmission electron microscope (TEM) images of different locations of the PtCu nanomaterial under the same magnification in Example 5 of this invention;

[0039] Figure 6 The images are projection electron microscope (TEM) images of PtCu nanomaterials in Example 6 of the present invention, (a) 200 nm, (b) 20 nm;

[0040] Figure 7 The images are projection electron microscope (TEM) images of PtCuAu nanomaterials in Example 7 of the present invention, (a) 20 nm, (b) 10 nm;

[0041] Figure 8 The images are transmission electron microscope (TEM) images of PtCuIr nanomaterials in Example 8 of the present invention, (a) 20 nm, (b) 10 nm;

[0042] Figure 9 These are transmission electron microscope (TEM) images of different locations of the PtCuPd nanomaterial under the same magnification under the same microscope in Example 9 of this invention;

[0043] Figure 10 The images are projection electron microscope (TEM) images of PtNi nanomaterials in Example 10 of the present invention, (a) 50 nm, (b) 10 nm;

[0044] Figure 11 The images are projection electron microscope (TEM) images of PtCo nanomaterials in Example 11 of the present invention, (a) 50 nm, (b) 10 nm;

[0045] Figure 12 These are transmission electron microscope (TEM) images of different locations of the PtPd nanomaterial under the same magnification in Example 12 of this invention;

[0046] Figure 13 The images are projection electron microscope (TEM) images of PtIr nanomaterials in Example 13 of the present invention, (a) 200 nm, (b) 50 nm;

[0047] Figure 14The images are projection electron microscope (TEM) images of PtRu nanomaterials in Example 14 of the present invention, (a) 100 nm, (b) 20 nm;

[0048] Figure 15 The images are transmission electron microscope (TEM) images of PdCu nanomaterials in Example 15 of the present invention, (a) 50 nm, (b) 50 nm;

[0049] Figure 16 The image shows the X-ray diffraction (XRD) pattern of the PtCu nanomaterial in Example 1 of this invention.

[0050] Figure 17 The image shows the X-ray diffraction (XRD) pattern of the PtCuAu nanomaterial in Example 7 of this invention.

[0051] Figure 18 The image shows the X-ray diffraction (XRD) pattern of the PtCuIr nanomaterial in Example 8 of this invention.

[0052] Figure 19 The image shows the X-ray diffraction (XRD) pattern of the PtCuPd nanomaterial in Example 9 of this invention.

[0053] Figure 20 The image shows the X-ray diffraction (XRD) pattern of the PtNi nanomaterial in Example 10 of this invention.

[0054] Figure 21 The image shows the X-ray diffraction (XRD) pattern of the PtCo nanomaterial in Example 11 of this invention.

[0055] Figure 22 The image shows the X-ray diffraction (XRD) pattern of the PtPd nanomaterial in Example 12 of this invention.

[0056] Figure 23 The image shows the X-ray diffraction (XRD) pattern of the PtIr nanomaterial in Example 13 of this invention.

[0057] Figure 24 The image shows the X-ray diffraction (XRD) pattern of the PtRu nanomaterial in Example 14 of this invention.

[0058] Figure 25 This is the X-ray diffraction (XRD) pattern of the PdCu nanomaterial in Example 15 of the present invention. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1

[0061] A method for preparing sonochemically assisted PtCu alloy nanomaterials includes the following steps:

[0062] (1) Add 0.5 mmol sodium hydroxide, 0.04 mmol chloroplatinic acid and 0.04 mmol copper nitrate to 30 mL ethylene glycol and shake to obtain a mixed solution.

[0063] (2) After sealing the above mixed solution, let it age for 30 min, then insert the ultrasonic probe below the surface of the mixed solution and react for 20 min at 60% ultrasonic intensity.

[0064] (3) After the reaction is completed, the reaction solution is cooled to room temperature, and the solid product is separated by centrifugation. The solid is washed once with a mixed solution of ethanol and water with a volume ratio of 1:1. The centrifugation speed is 10,000 rpm and the centrifugation time is 5 min. The washed solid product is then vacuum dried to obtain the final product. The drying time is 24 h.

[0065] Example 2

[0066] A method for preparing a sonochemically assisted PtCu alloy nanomaterial differs from Example 1 only in that the reaction time in step (2) is replaced with 5 min, while the remaining steps and conditions are the same as in Example 1.

[0067] Example 3

[0068] A method for preparing sonochemically assisted PtCu alloy nanomaterials differs from Example 1 only in that chloroplatinic acid in step (1) is replaced with potassium chloroplatinate, while the remaining steps and conditions are the same as in Example 1.

[0069] Example 4

[0070] A method for preparing sonochemically assisted PtCu alloy nanomaterials differs from Example 1 only in that chloroplatinic acid in step (1) is replaced with platinum acetylacetonate, while the remaining steps and conditions are the same as in Example 1.

[0071] Example 5

[0072] A method for preparing a sonochemically assisted PtCu alloy nanomaterial differs from Example 1 only in that the 30 mL ethylene glycol in step (1) is replaced with a mixed solution of 15 mL ethylene glycol and 15 mL water, while the remaining steps and conditions are the same as in Example 1.

[0073] Example 6

[0074] A method for preparing a sonochemically assisted PtCu alloy nanomaterial differs from Example 1 only in that the 30 mL ethylene glycol in step (1) is replaced with a mixed solution of 15 mL ethylene glycol and 15 mL isopropanol, while the remaining steps and conditions are the same as in Example 1.

[0075] Example 7

[0076] A method for preparing sonochemically assisted PtCuAu alloy nanomaterials, comprising the following steps:

[0077] (1) Add 0.5 mmol sodium hydroxide, 0.004 mmol chloroauric acid, 0.04 mmol chloroplatinic acid and 0.04 mmol copper nitrate to 30 mL ethylene glycol and shake to obtain a mixed solution.

[0078] (2) After sealing the above mixed solution, let it age for 30 min, then insert the ultrasonic probe below the surface of the mixed solution and react for 20 min at 60% ultrasonic intensity.

[0079] (3) After the reaction is completed, the reaction solution is cooled to room temperature, and the solid product is separated by centrifugation. The solid is washed once with a mixed solution of ethanol and water with a volume ratio of 1:1. The centrifugation speed is 10,000 rpm and the centrifugation time is 5 min. The washed solid product is then vacuum dried to obtain the final product. The drying time is 24 h.

[0080] Example 8

[0081] A method for preparing sonochemically assisted PtCuIr alloy nanomaterials, which differs from Example 7 only in that chloroauric acid in step (1) is replaced with sodium chloroiridate, while the remaining steps and conditions are the same as in Example 7.

[0082] Example 9

[0083] A method for preparing sonochemically assisted PtCuPd alloy nanomaterials, which differs from Example 7 only in that chloroauric acid in step (1) is replaced with palladium chloride, while the remaining steps and conditions are the same as in Example 7.

[0084] Example 10

[0085] A method for preparing sonochemically assisted PtNi alloy nanomaterials differs from Example 1 only in that copper nitrate in step (1) is replaced with nickel nitrate, while the remaining steps and conditions are the same as in Example 1.

[0086] Example 11

[0087] A method for preparing sonochemically assisted PtCo alloy nanomaterials differs from Example 1 only in that copper nitrate in step (1) is replaced with cobalt nitrate and ethylene glycol is replaced with isopropanol, while the remaining steps and conditions are the same as in Example 1.

[0088] Example 12

[0089] A method for preparing sonochemically assisted PtPd alloy nanomaterials differs from Example 1 only in that copper nitrate in step (1) is replaced with palladium chloride, while the remaining steps and conditions are the same as in Example 1.

[0090] Example 13

[0091] A method for preparing a sonochemically assisted PtRu alloy nanomaterial differs from Example 1 only in that: copper nitrate in step (1) is replaced with sodium chloroiridate and ethylene glycol is replaced with isopropanol, while the remaining steps and conditions are the same as in Example 1.

[0092] Example 14

[0093] A method for preparing sonochemically assisted PtIr alloy nanomaterials differs from Example 1 only in that copper nitrate in step (1) is replaced with ruthenium chloride and ethylene glycol is replaced with isopropanol, while the remaining steps and conditions are the same as in Example 1.

[0094] Example 15

[0095] A method for preparing sonochemically assisted PdCu alloy nanomaterials differs from Example 1 only in that chloroplatinic acid in step (1) is replaced with palladium chloride, while the remaining steps and conditions are the same as in Example 1.

[0096] The morphology and phase composition of the nanomaterials prepared in Examples 1-15 were characterized as follows:

[0097] (1) Morphological characteristics

[0098] The products obtained in Examples 1-15 were characterized by TEM using a JEM-2100 instrument, and the results are as follows: Figures 1-15 As shown. Figure 1 , 7 As shown in Examples 1, 7, and 9, the products prepared in Examples 1, 7, and 9 are nanowires with uniform diameter; Figure 2As shown, the product prepared in Example 2 consists of nanoparticles of uniform size; Figure 3 , 6 As shown in Examples 3, 6, 8, 10, 11, 12, and 13, Examples 3, 6, 8, 10, 11, 12, and 13 are nanoclusters; as Figure 4 As shown, the product prepared using Example 4 is a hollow nanosphere; as Figure 5 and 14 As shown, the products prepared in Examples 5 and 14 are nanospheres formed by the stacking of nanoparticles; as Figure 15 As shown, the product prepared in Example 15 also has a nanoscale morphology.

[0099] (2) Phase characterization

[0100] The products obtained in Examples 1 and 7-15 were characterized by XRD phase analysis using a D8 ADVANCE (Bruker) X-ray diffractometer. The results are as follows: Figures 16-25 As shown. Figure 16 As shown, the main diffraction peaks of the product prepared in Example 1 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Cu (JCPD 04-0836), proving that the product obtained in Example 1 is a PtCu alloy nanocrystal. Figure 17 As shown, the main diffraction peaks of the product prepared in Example 7 are located between the diffraction peaks corresponding to each crystal plane of PtCu (JCPDS 48-1549) and Au (JCPD 04-0784), proving that the product obtained in Example 7 is a PtCuAu alloy nanocrystal. Figure 18 As shown, the main diffraction peaks of the product prepared in Example 8 are located between the diffraction peaks corresponding to each crystal plane of PtCu (JCPDS 48-1549) and Ir (JCPD 06-0598), proving that the product obtained in Example 8 is a PtCuIr alloy nanocrystal. Figure 19 As shown, the main diffraction peaks of the product prepared in Example 9 are located at the positions corresponding to the diffraction peaks of each crystal plane of PdPtCu2 (JCPDS 48-1550), proving that the product obtained in Example 9 is PtCuPd alloy nanocrystals. Figure 20 As shown, the main diffraction peaks of the product prepared in Example 10 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Ni (JCPD 04-0850), proving that the product obtained in Example 10 is PtNi alloy nanocrystals. Figure 21 As shown, the main diffraction peaks of the product prepared in Example 11 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Co (JCPD 15-0806), proving that the product obtained in Example 11 is PtCo alloy nanocrystals. Figure 22As shown, the main diffraction peaks of the product prepared in Example 12 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Pd (JCPD 46-1043), proving that the product obtained in Example 12 is PtPd alloy nanocrystals. Figure 23 As shown, the main diffraction peaks of the product prepared in Example 13 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Ru (JCPD 06-0663), proving that the product obtained in Example 13 is PtRu alloy nanocrystals. Figure 24 As shown, the main diffraction peaks of the product prepared in Example 14 are located between the diffraction peaks corresponding to each crystal plane of Pt (JCPDS 04-0802) and Ir (JCPD 06-0598), proving that the product obtained in Example 14 is a PtIr alloy nanocrystal. Figure 25 As shown, the main diffraction peaks of the product prepared in Example 15 are located at the positions of the diffraction peaks corresponding to each crystal plane of PdCu (JCPDS48-1551), proving that the product obtained in Example 15 is PdCu alloy nanocrystals.

[0101] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A method for the preparation of nanomaterials assisted by sonochemistry, characterized by: The metal salt is mixed in the presence of a solvent, which is adjusted to be alkaline with a base, and the mixing reaction is assisted by sonication, wherein the nanomaterials can be PtCu, PtCo, PtNi, PtPd, PtRu, PtIr, PdCu, PtCuAu, PtCuIr, PtCuPd alloy nanomaterials, and the solvent is ethylene glycol, isopropyl alcohol, an equal volume mixture of any of ethylene glycol and water, or an equal volume mixture of ethylene glycol and isopropyl alcohol.

2. A method of preparing nanomaterials assisted by sonochemistry according to claim 1, characterized in that: The base is sodium hydroxide or potassium hydroxide.

3. The method of claim 1, wherein: The metal salt is a mixture of multiple kinds of platinum salt, copper salt, cobalt salt, nickel salt, palladium salt, ruthenium salt, gold salt, iridium salt.

4. The method according to claim 3, wherein: The platinum salt is one or more of chloroplatinic acid, potassium chloroplatinate, potassium chloroplatous acid, and platinum acetylacetone; The copper salt is one or more of copper nitrate, copper chloride, and copper sulfate; The cobalt salt is one or more of cobalt nitrate and cobalt chloride; The nickel salt is one or more of nickel nitrate and nickel chloride; The palladium salt is one or more of palladium nitrate, palladium chloride, potassium chloropalladate, potassium chloropalladous acid, and palladium acetylacetone; The ruthenium salt is one or more of ruthenium chloride and ruthenium acetylacetone; The iridium salt is one or more of sodium chloroiridate, iridium nitrate, and chloroiridic acid; The gold salt is one or more of chloroauric acid, sodium chloroaurate, and gold nitrate.

5. The method of claim 1, wherein: The base is mixed with the solvent first, and then a metal salt solution is added to form a mixed solution, which is sealed and aged, and then reduced with the assistance of sonication.

6. A method of sonochemically assisted nanomaterials production according to claim 5, characterized by that: The concentration of the metal salt is 0.001-0.002 mol / L.

7. The method of claim 1, wherein the method is characterized by: In the mixing reaction assisted by sonication: The intensity of the ultrasonic wave is 40%-80%; The mixing reaction time is 5-35 min; The mixing reaction is followed by washing and drying operations.

8. The method according to claim 7, wherein: The solvent used for washing is an alcohol solvent; The washing process further includes a centrifugation operation; The drying time is 24-48 h.

9. The method according to claim 8, wherein: The centrifugation speed is 5000-10000 rpm, and the time is 3-10 min.

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