1217 results about "Palladium" patented technology

The invention provides a method and system for detecting the content of platinum, palladium and rhodium in an automobile exhaust purification catalyst and application, and relates to the technical field of automobile exhaust purification, the method comprises the following steps: crushing, grinding, sieving, performing microwave acidolysis, neutralizing, washing and drying a catalyst sample to obtain dry filter residues; a trapping agent and a fluxing agent are added into the dry filter residues, constant-temperature heating is conducted in inert gas, then cooling forming is conducted, and an alloy button is obtained; blowing ash on the alloy, then adding mixed acid into the alloy, heating the alloy in a water bath at 95 DEG C for 25-35 minutes to obtain a dissolved solution, then adding a masking agent into the dissolved solution, and oscillating to obtain a solution to be detected; and filtering the liquid to be detected, fixing the volume and detecting. According to the method, precise quantification of trace platinum, palladium and rhodium in the complex matrix catalyst can be realized, and the method has a relatively high recovery rate; meanwhile, pollution elements are prevented from being used, and the method is green and efficient and better conforms to the concept of green chemistry.

The invention relates to an ultra-high-purity silver target material and a preparation method thereof, and belongs to the field of target materials, and the ultra-high-purity silver target material comprises the following raw materials in percentage by weight: 99.99% of high-purity silver, 0.05%-0.15% of palladium, 0.025%-0.075% of iridium, 0.1%-0.3% of neodymium and 0.1%-0.3% of praseodymium. According to the ultra-high-purity silver target material and the preparation method thereof, 5N-grade high-purity silver is adopted as a base material, trace palladium, iridium, neodymium, praseodymium and other elements are accurately added, the purity of the target material is remarkably improved and exceeds the purity range in the prior art, the hardness, strength and abrasion resistance of the target material are optimized through the innovative material design, and the service life of the target material is prolonged. The compact uniformity of the material is effectively improved and the internal stress is eliminated through grain refinement and multi-stage heat treatment, in addition, the isotropy of the target material is enhanced through the multi-directional forging process, the consistency of the performance in different directions is ensured, the mechanical performance of the target material is remarkably improved through the improvements, the target material can better adapt to the application environment with the high wear resistance requirement, and the service life of the target material is prolonged. And meanwhile, the conductivity, the reflectivity and the uniformity of a thin film prepared by using the target material are improved.

The invention discloses a preparation method and protection application of a luminous iodine adsorbent, and relates to the technical field of radioactive waste gas and waste liquid treatment. The method comprises the following steps: jointly dissolving an organic ligand and metal ions in a solvent to obtain a mixed solution, carrying out room-temperature reaction on the mixed solution, and assembling to obtain the luminous MSOFs adsorbent, wherein the organic ligand is a sulfydryl ligand with a nitrogen heterocyclic ring or a phenylphosphine derivative; the ligand central atom comprises gold, silver, copper, platinum, palladium, iron, aluminum, nickel or cobalt. The prepared iodine adsorbent and the protection device are excellent in adsorption capacity, low in cost, capable of being rapidly and massively synthesized, high in adsorption rate and beneficial to efficient treatment and real-time monitoring of iodine; the preparation method is simple in step, convenient to operate and low in equipment requirement.

The invention discloses a lubricating oil preparation method, which comprises: contacting a raw material containing waste rubber with a catalyst in a closed container in a hydrogen atmosphere, and carrying out a catalytic cracking reaction to obtain a lubricating oil-containing product, the catalyst comprises a carrier, an acidic component and an active component loaded on the surface of the carrier, the active component is selected from at least one of a ruthenium elementary substance, a rhodium elementary substance, a platinum elementary substance, a palladium elementary substance, an iridium elementary substance and a nickel elementary substance; the acidic component is selected from at least one of silicotungstic acid, ammonium metatungstate, phosphotungstic acid and tungstic acid. The invention discloses a new path for preparing the lubricating oil by utilizing the waste rubber through a carbon = carbon hydrogenation and carbon-carbon bond breakage strategy under a relatively mild condition. According to the path, new application of waste rubber catalytic conversion is developed through C = C hydrogenation and C-C bond fracture strategies, and a new method for synthesizing lubricating oil with important application value is provided.

A light-emitting device including an organometallic compound having a metal such as is platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm) is provided. The light-emitting device may include a first electrode, a second electrode facing the first electrode, an interlayer between the first electrode and the second electrode and comprising an emission layer. The light-emitting device may be included in an electronic apparatus.

The invention discloses a method for adjusting a TS-1 molecular sieve through a plasma treatment technology and application, and relates to the technical field of TS-1 molecular sieve treatment. The method comprises the following steps: S1, preprocessing a TS-1 sample; s2, selecting treatment gas, and presetting treatment conditions; s3, plasma treatment equipment is selected, and the pretreated TS-1 sample is laid according to a certain thickness; s4, processing according to a preset processing condition; and S5, post-processing and testing. The invention discloses a method for adjusting a TS-1 molecular sieve by a plasma treatment technology and application of the TS-1 molecular sieve, and the treated modified TS-1 molecular sieve has advantages in a Beckmann rearrangement reaction compared with a parent conversion rate and selectivity; loaded metals such as copper, cobalt and iron are used for a carbon dioxide and hydrogen reduction reaction, and compared with a matrix, the conversion rate and methanol selectivity are higher; the supported metals such as copper, cobalt, indium, platinum and palladium are used for photocatalytic reaction of carbon dioxide and water, and compared with a parent, the conversion rate and alcohol selectivity are higher.

The present disclosure includes mixed metal catalysts, including electrocatalysts, which can be applied to reduce the need for Ir, while exhibiting desirable performance. Mixed metal electrocatalyst materials on the invention catalysts comprising Ir, Ru and Pd, catalysts comprising Ru and Pd, and catalysts comprising Ir and Pd.

The invention discloses an electrochemical synthesis method of hydrogen peroxide. Under the mild conditions of normal temperature and normal pressure, palladium-based electrodes are used as a cathode and an anode, the cathode electrolyzes water to produce active hydrogen, and meanwhile, the anode oxidizes formaldehyde to produce active hydrogen; meanwhile, the strategy that sulfo-anthraquinone is reduced by active hydrogen to synthesize H2O2 is adopted. A palladium membrane electrode loaded with Pd crystals is designed to ensure that active hydrogen rapidly diffuses to a palladium layer and shuttles back and forth into an ionic liquid organic phase containing sulfo-anthraquinone, sulfo-anthraquinone is directly reduced into sulfo-anthrahydroquinone, and then oxygen is catalyzed to obtain an ionic liquid organic phase containing hydrogen peroxide. And extracting the organic phase by using electrolyte-free water to obtain hydrogen peroxide. Under the current density of 30 milliamperes / cm < 2 >, the cumulative concentration of 6-8% is realized for H2O2, and meanwhile, a high-value formate product is obtained. By adjusting the extraction phase ratio, the Faraday efficiency of hydrogen peroxide production can reach 90%.

An extreme ultraviolet mask including a substrate, a reflective multilayer stack on the substrate and a multi-layer patterned absorber layer on the reflective multilayer stack is provided. Disclosed embodiments include an absorber layer that includes an alloy comprising ruthenium (Ru), chromium (Cr), platinum (Pt), gold (Au), iridium (Ir), titanium (Ti), niobium (Nb), rhodium (Rh), molybdenum (Mo), tungsten (W) or palladium (Pd), and at least one alloying element. The at least one alloying element includes ruthenium (Ru), chromium (Cr), tantalum (Ta), platinum (Pt), gold (Au), iridium (Ir), titanium (Ti), niobium (Nb), rhodium (Rh), molybdenum (Mo), hafnium (Hf), boron (B), nitrogen (N), silicon (Si), zirconium (Zr) or vanadium (V). Other embodiments include a multi-layer patterned absorber structure with layers that include an alloy and an alloying element, where at least two of the layers of the multi-layer structure have different compositions.

The invention discloses a process and equipment for recovering platinum and palladium from a petroleum catalyst, and relates to the field of metal material recovery, carbon-supported platinum group noble metals platinum and palladium are recovered by using the patent technology, firstly, fine grinding, hydrolysis and filtration are performed, then a reducing agent is adopted for reduction, then acidification and filtration are performed to remove base metals, and hydrochloric acid and nitric acid solutions are adopted for leaching and saltpeter removal, so that the platinum and palladium are recovered. The high-purity palladium powder is prepared from the solution subjected to platinum precipitation through ammonium chloride platinum precipitation, ammonium chloroplatinate hydrazine hydrate reduction, high-purity platinum powder and ammonia water palladium precipitation and hydrazine hydrate reduction, the purposes of saving energy and reducing the production cost are achieved, the ashing roasting furnace is adopted for static ashing, the technology process is simplified, the platinum group precious metal recovery rate is high, and the smelting cost is low. And the quality and purity of the platinum-palladium product are high, the metal recovery rate is high, and the smelting cost is low.

Disclosed herein is a catalyst including a multicomponent alloy including a seed and al least four elements. The seed includes at least one platinum group metal, wherein the platinum group metal includes platinum, ruthenium, iridium, palladium, or rhodium. Methods of preparing the catalyst are also provided herein.

Sensors containing one or more metal oxides as the sensor material are used for detecting pathogen-derived VOCs, e.g., VOCs emitting from infectious wounds. The metal oxides may contain one or more metal elements selected from aluminum, antimony, bismuth, boron, cerium, chromium, cobalt, copper, gold, indium, iridium, iron, lanthanum, lead, manganese, molybdenum, nickel, niobium, osmium, palladium, platinum, rhodium, ruthenium, selenium, silicon, silver, tantalum, tellurium, terbium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. A sensor device may have one or more sensors, which detects and records a variety of VOCs that are indicative of existence of pathogens, and the pathogens are associated with dieses and / or infections.

A sensor comprising one or more metal oxides as sensor material is used to detect pathogen-derived VOCs, such as those released from an infected wound. The metal oxides can comprise one or more metal elements selected from aluminum, antimony, bismuth, boron, cerium, chromium, cobalt, copper, gold, indium, iridium, iron, lanthanum, lead, manganese, molybdenum, nickel, niobium, osmium, palladium, platinum, rhodium, ruthenium, selenium, silicon, silver, tantalum, tellurium, terbium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. The sensor device can have one or more sensors that detect and record various VOCs indicative of the presence of pathogens, which are associated with mortality and / or infection.

To provide a method for effectively separating and recovering rhodium from an acidic aqueous solution containing platinum, palladium, and rhodium.SOLUTION: A method for recovering rhodium includes the steps for: adding dimethyl sulfoxide to an acidic aqueous solution containing platinum, palladium, and rhodium, followed by adding a reducing agent to the acidic aqueous solution for the precipitation of platinum and palladium, and then separating the solid and liquid phases to recover platinum and palladium; and recovering rhodium from the platinum and palladium post-recovery solution obtained in the platinum and palladium recovery step.SELECTED DRAWING: Figure 1

A catalyst for a chlorine evolution reaction, according to an embodiment of the present invention, comprises: nanoparticles including cobalt oxide having a composition formula of CoxO1-x (0.33 < x < 0.50); and transition metal particles including at least one from the group consisting of iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt) and palladium (Pd), which are present on the surface of the nanoparticles.

The invention relates to the technical field of applicator, in particular to a radionuclide applicator and a preparation method thereof. Which comprises a shell on which a handle is arranged, and is characterized in that a source core is arranged in the shell, the source core sequentially comprises a first palladium layer, a first silver layer, an active layer, a second silver layer and a second palladium layer from inside to outside, and the active layer is a SrCO3-Ag layer; epoxy resin layers are arranged on the periphery of the source core and one side wall close to the handle. The radioactive substance of the active layer adopted by the radionuclide applicator provided by the invention is obtained by extracting, separating and purifying the radioactive waste liquid and has the characteristic of high purity, high-heat-release nuclides in the radioactive waste liquid are reduced, and the active layer is obtained by precipitating, filtering, calcining, pressing and rolling, so that the source core of the applicator has the characteristic of high uniformity.

The invention relates to the technical field of precious metal recovery, in particular to a process for separating precious metal from copper-nickel smelting waste, which comprises the following steps: crushing and grading the waste, adding a sulfuric acid solution containing etidronic acid, leaching, and washing, drying and crushing filter residues to obtain a pretreated material; mixing the pretreated material with a sodium peroxide-sodium carbonate composite flux, roasting, leaching with water, and filtering to obtain a filter residue B; adding a leaching agent containing hydrochloric acid, sodium chlorate and 1, 2-cyclohexanediamine tetraacetic acid into the filter residue B according to the ratio of 1: 3-1: 5, and filtering to obtain filtrate C and filter residue C; adjusting the pH value of the filtrate C to 1.5-2.5, adding an ethanol solution of sodium N, N-diethyldithiocarbamate, precipitating, washing and calcining to obtain sponge palladium; adding ammonium chloride into the filtrate D, precipitating and calcining to obtain sponge platinum; and leaching the filter residue C by using a hydrochloric acid-chloroauric acid mixed solution containing diphenylthiourea, and replacing and calcining zinc powder to obtain crude gold. According to the process, the leaching rates of platinum, palladium and gold and the product purity are greatly improved; flux and reagent systems are optimized, consumption and energy consumption are reduced, waste liquid treatment is matched for up-to-standard discharge, and efficient resource recovery and environment-friendly cooperation are achieved.

To provide an EUV mask blank which prevents damage to a multilayer reflective film due to dry etching using a halogen gas as an etching gas, and dry etching using an oxygen-based gas as an etching gas.SOLUTION: In a reflective mask blank for EUV lithography, a multilayer reflective film reflecting EUV light, a protective film for the multilayer reflective film, and an absorption layer absorbing EUV light are formed in this order. The protective film is made of rhodium (Rh) or a rhodium material including Rh and at least one element selected from the group consisting of nitrogen (N), oxygen (O), carbon (C), boron (B), ruthenium (Ru), niobium (Nb), molybdenum (Mo), tantalum (Ta), iridium (Ir), palladium (Pd), zirconium (Zr), and titanium (Ti).SELECTED DRAWING: None

The invention provides a platinum-palladium-based multi-component alloy sub-nanobelt catalyst as well as a preparation method and application thereof, and belongs to the technical field of nano material electro-catalysis. The element composition of the platinum-palladium-based multicomponent alloy sub-nanobelt catalyst disclosed by the invention is PtPdM, m is a non-noble metal, and the non-noble metal is one or more of Fe, Co, Ni, Ga and Zn; the preparation method comprises the following steps: ultrasonically mixing a metal precursor solution and a reduction solution to obtain a mixture, heating the mixture to react, centrifugally collecting a product, and calcining to obtain the platinum-palladium-based multicomponent alloy sub-nanobelt catalyst. The synthesis method disclosed by the invention is simple and controllable, and the obtained platinum-palladium-based multicomponent alloy sub-nanobelt catalyst has the characteristics of large specific surface area, rich active sites, low noble metal content and the like, and shows excellent oxygen reduction reaction catalytic performance in an acidic electrolyte.

The problem of the present invention is to provide a plating stack (a stack of plating films) for applying on surface of conductor circuits or the like, the plating stack can maintain high bond strength when solder is bonded on that and can be produced stably. In the method for producing a plating stack of the present invention, a plating layer A mainly composed of a second metal is deposited on an object to be plated S mainly composed of a first metal by a substitution reaction, then a plating layer B mainly composed of palladium is deposited on the plating layer A, and then a plating layer C mainly composed of nickel is deposited on the plating layer B by a redox reaction. The first metal is, for example, copper. The second metal is, for example, gold, platinum or silver.

The invention discloses a comprehensive treatment method of platinum and palladium slag, and relates to the technical field of non-ferrous metal metallurgy. After the platinum and palladium slag is subjected to sulfating roasting, flue gas is introduced into a selenium absorption tower; hydrolyzing the roasting slag, reducing the dissolving solution to recover tellurium, and enabling the dissolving solution to enter a copper recovery process after tellurium precipitation; the dissolving slag is subjected to chlorination dissolution gold separation, and the gold separation slag is subjected to silver recovery; the gold separation liquid is reduced to obtain gold powder; carrying out platinum and palladium precipitation on the gold reduced solution, adding ammonia water into platinum and palladium precipitation to carry out platinum and palladium separation, respectively refining the separated platinum and palladium, and recovering platinum and palladium; carrying out platinum-palladium reduction on the platinum-palladium precipitation post-solution to obtain platinum-palladium precipitation slag and a platinum-palladium reduction post-solution, and returning the platinum-palladium precipitation slag to the roasting process; and performing tellurium reduction on the platinum-palladium reduced liquid to obtain tellurium powder and tellurium reduced liquid, and enabling the tellurium reduced liquid to enter a wastewater treatment process. The method has the beneficial effects that selenium, tellurium, copper, gold, silver, platinum and palladium are separated and recycled step by step, the recycling rate is high, the wastewater treatment difficulty is small, and environmental pollution is reduced.

The invention discloses a method for electrocatalytic hydrogenation dehalogenation of haloacetic acid or halomethane in a water body, which is characterized in that a conductive material of which the surface is modified with ruthenium or platinum is used as a catalytic cathode, water is used as a hydrogen source, and the haloacetic acid or halomethane in the water body is subjected to electrochemical hydrogenation dehalogenation to form acetic acid or methane. The price of precious metal in the catalytic cathode is lower, and the unit price of ruthenium is far lower than that of palladium and rhodium; and compared with a palladium-modified catalytic cathode, the dechlorination selectivity is higher, and the selectivity of hydrodechlorination of trichloroacetic acid into acetic acid in a water body is improved by 11.7%.

To provide a calcined body that is processed easier than a conventional calcined body and where differences in hardness between production lots are suppressed.SOLUTION: A calcined body comprises: at least one first transition metal element selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), and silver (Ag); a coloring element of at least one of a lanthanoid rare earth element and a second transition metal element different in kind from the first transition metal element; and zirconia containing a stabilizing element. A content of the first transition metal element is 100 mass.ppm or more, a content of the second transition metal element is less than 100 mass.ppm, and an absolute value of a difference in hardness relative to a hardness of a calcined body obtained from a commercially available powder is 10 HV or less.SELECTED DRAWING: None

A method may include operating a dehydrogenation process whereby a hydrocarbon-containing feed is converted to light olefins, wherein the dehydrogenation process utilizes a fluidized process catalyst that circulates between a reactor and a combustor. The method may comprise withdrawing the process catalyst from the dehydrogenation process, modifying the process catalyst to form a modified catalyst, and adding the modified catalyst back to the dehydrogenation process. The process catalyst may include from 0.1 wt. % to 10 wt. % of one or more metals chosen from gallium, indium, thallium, or combinations thereof, from 1 ppmw to 1000 ppmw of one or more metals chosen from platinum, palladium, rhodium, iridium, ruthenium, osmium, or combinations thereof, and at least 85 wt. % support. Modifying the process catalyst may include adding one or more of manganese, iron, chromium, or vanadium.

The invention discloses a method for recovering platinum and palladium from high-cobalt nickel-containing carbonylation slag, and relates to the technical field of non-ferrous metal carbonylation metallurgy, the method comprises the following steps: S1, hydrogen reduction and activation; s2, feeding into a high-pressure carbonylation reactor; and S3, efficient carbonylation. According to the method, the carbonylation slag is subjected to hydrogen reduction activation treatment, nickel protoxide and cobalt oxide are changed into simple substance nickel, the simple substance nickel is fed into a carbonylation reactor for carbonylation under the protection of reducing gas or inert gas after activation treatment, 95% of Ni, 85% of Fe and 80% of Co are carbonylated to enter a gas phase after carbonylation, bonding of cobalt and a platinum solid solution is broken through carbonylation, and the nickel-cobalt-cobalt-cobalt-cobalt alloy is obtained. Nickel protoxide is difficult to dissolve in various strong acids and oxidizing acids, and a foundation is laid for further separation of base metals and non-metallic element sulfur from precious metals to produce high-grade platinum concentrate.

Methods and systems for the electrochemical epoxidation of alkenes to generate an epoxide are described herein. Said methods and systems comprise: contacting an anode comprising an oxygen atom transfer electrocatalyst with an alkene in the presence of an electrolyte comprising water; applying a voltage to the anode and a cathode to generate the epoxide; wherein the oxygen atom transfer electrocatalyst comprises an at least partially oxidized palladium-platinum alloy characterized by the formula FX1: PdyPtzOx; wherein y is greater than 0 and less than 1; z is greater than 0 and less than 1; wherein the sum of y and z is equal to 1; and x is selected from the range of 0 to 2. The methods and systems disclosed herein comprise a significant advancement in the electrocatalytic epoxidation of alkenes in aqueous and mixed electrolytes using water as the oxygen atom transfer source.

The invention discloses a hydrogen energy fuel cell catalyst carrier based on a graphene graft polymer, which is characterized in that two-dimensional graphene is used as a substrate, the surface of the two-dimensional graphene is modified with an oxygen-containing functional group, and a functional polymer branch chain containing nitrogen, sulfur or phosphorus heteroatoms is covalently grafted to form a local three-dimensional network winding structure; the carrier is loaded with platinum, palladium, ruthenium and other metal or alloy nanoparticles, the particle size is 2-8 nm, the loading capacity is 10%-40%, and the particles are anchored to polymer functional sites or reduced in situ to a graphene defect area through coordination. A polymer branch chain has pH responsiveness and can adjust the local proton transmission efficiency; the grafting density is 3-15 grafting points per 100 carbon atoms, so that high dispersion and stable anchoring of metal particles are effectively realized; the specific surface area of the carrier is 400-800m < 2 > / g, the electrochemical active area is not less than 80m < 2 > / g, and the activity retention rate is greater than 80% after 5000 circles of accelerated durability tests. The activity, the stability and the proton conduction performance of the catalyst are remarkably improved, and the catalyst is suitable for high-performance fuel cells.

The invention provides a method for recovering platinum group metal from a waste automobile exhaust purification catalyst, and belongs to the field of precious metal recovery. The method comprises the following steps: carrying out crushing and impurity removal pretreatment on the waste catalyst to obtain solid residues; mixing the obtained solid slag with alkali liquor, and performing hot-pressing activation to obtain active slag; leaching the active slag by using an acid leaching system of hydrochloric acid-hydrogen peroxide-sodium chloride to obtain a leaching solution enriched with platinum group metals; adjusting the acidity of the leachate, adding a first adsorption material, selectively adsorbing platinum and palladium, and separating supernate and a platinum / palladium enrichment material; adjusting the acidity of the supernate, adding a second adsorption material, selectively adsorbing rhodium, carrying out solid-liquid separation, and collecting a rhodium enrichment material; respectively eluting and refining the platinum / palladium enrichment material and the rhodium enrichment material, and recovering platinum, palladium and rhodium; through the optimally designed recovery method of alkaline hot-pressing activation-mild acidic directional leaching-two-stage magnetic adsorption separation, efficient recovery of platinum, palladium and rhodium in the waste automobile exhaust catalyst is realized.

To provide a technology to improve a hydrogen occlusion time (response speed) while suppressing a cost in a hydrogen detection element.SOLUTION: A hydrogen detection element of the present invention is an electromagnetic meta-material obtained by periodically arranging meta structures composed of a hydrogen occlusion metal film and having a predetermined shape and size on a substrate at a predetermined pitch having 1,000 nm or less and controls a reflection, transmission or absorption spectrum of incident electromagnetic wave. The hydrogen occlusion metal film contains no precious metal and palladium can be used as hydrogen occlusion metal. Further, a spectrum of an incident wave can remove near-infrared light from visible light. Further, the present invention provides a hydrogen detection device including: the hydrogen detection element; a light source unit that can emit incident electromagnetic wave; a light-receiving unit that receives light reflected by or transmitted through the hydrogen detection element; and a detection unit that detects hydrogen on the basis of a light-receiving result of the light-receiving unit.SELECTED DRAWING: Figure 5

The invention belongs to the crossing field of nano materials and coordination chemistry, and particularly relates to a chiral silver-palladium nano-cluster, a preparation method thereof and application of the chiral silver-palladium nano-cluster in aggregation-induced emission and circular polarization emission. The chemical formula of the chiral silver-palladium nano-cluster is C174H180Ag14Cl4P12Pd, the chiral silver-palladium nano-cluster belongs to a monoclinic system, and the chiral silver-palladium nano-cluster has an atomic-scale accurate structure, is small in size (1.82 nm) and good in monodispersity. The chiral nano-cluster shows good chiral optical activity, has an emission peak at 662 nm, has significant chiral optical activity characteristics and circular dichroism signals, also has two characteristics of aggregation-induced emission and circular polarization emission, has an absorption asymmetric factor and an emission asymmetric factor as high as 8.2 * 10 <-4 > and 2.2 * 10 <-3 > respectively, and has important application value.