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Method for producing metal nanoparticleRelated Patent Categories: Specialized Metallurgical Processes, Compositions For Use Therein, Consolidated Metal Powder Compositions, And Loose Metal Particulate Mixtures, Processes, Producing Or Purifying Free Metal Powder Or Producing Or Purifying Alloys In Powder Form (i.e., Named Or Of Size Up To 1,000 Microns In Its Largest Dimension), Utilizing Electrothermic, Magnetic, Or Wave EnergyMethod for producing metal nanoparticle description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070044590, Method for producing metal nanoparticle. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for producing nanoparticles, and particularly to a method for producing metal nanoparticles. [0003] 2. Description of Related Prior Arts [0004] Recently, nanotechnology is widely developed and researched in industries and institutes to find new materials or build more efficient processes. [0005] To produce nanoparticles, some physical and chemical processes are applied, for example, redox method, photochemical method, electrochemical method, gas evaporation method and laser ablation technique. However, the currently known nanotechnologies are not good enough in many aspects such as controlling of particle size, preservation and dispersion of nanoparticles, and expensive equipment. [0006] Therefore, it's desired to provide a better process for producing metal nanoparticles to solve the above problems. SUMMARY OF THE INVENTION [0007] An object of the present invention is to provide a method for producing metal nanoparticles, which can be easily performed at a lower cost. [0008] A further object of the present invention is to provide a method for producing metal nanoparticles, so that the produced metal nanoparticles exhibit high dispersion, uniform particle size and can be preserved in a simple way. [0009] To achieve the above objects, the method of the present invention comprises steps of: (a) Dissolving a metallic compound in a solvent to obtain a metal ionic solution; (b) Uniformly distributing said metal ionic solution on a carrier; and (c) Shooting electrons from an electron source at said carrier for reducing said metal ions to metal nanoparticles. [0010] The metallic compound of step (a) can be a metallic salt, a metallic complex or other proper compounds, wherein the metal can be Pt, Au, Pd, Ag, Cu, Ti, Zn, Fe, Ni, Zr, Al or other proper metals. The metallic compound also can be PtCl.sub.4, AuCl.sub.4, AgNO.sub.3, CuSO.sub.4 or Fe(NO.sub.3).sub.2. [0011] The solvent used in the present invention is not restrictedly limited and can be ultra-pure water or deionized water. [0012] Preferably, the carrier is made by a material capable of well attaching said metal ionic solution, for example, polymer, ceramic membrane, lacy carbon, non-woven fabric and carbon cloth. [0013] The metal ionic solution can be distributed on carrier by any proper method, and preferably by dipping treatment, spin coating or spray coating. [0014] In general, the above step (b) is performed at room temperature, and the carrier is further dried after distributing said metal ionic solution thereon. [0015] In the present invention, the electron source is not restrictedly limited, and can be a transmission electron microscope (TEM), a scanning electron microscope (SEM) or a DC power supply. [0016] Other features and advantages of the present invention can be understood and illustrated by the preferred embodiments accompanied with drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0017] FIG. 1 shows the process for producing metal nanoparticles in accordance with the present invention; [0018] FIG. 2 is a schematic view of the dipping treatment; [0019] FIG. 3 is a schematic view of the spin coating; [0020] FIG. 4 is a schematic view of the spray coating; [0021] FIG. 5 is a BF image showing Ag nanoparticles on a polymer substrate; Continue reading about Method for producing metal nanoparticle... Full patent description for Method for producing metal nanoparticle Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method for producing metal nanoparticle patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Method for producing metal nanoparticle or other areas of interest. ### Previous Patent Application: Solution jet type fabrication apparatus, method, solution containing fine particles, wiring pattern substrate, device substrate Next Patent Application: Method for producing mesoporpus nanoscale iron-containing metal particles Industry Class: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures ### FreshPatents.com Support Thank you for viewing the Method for producing metal nanoparticle patent info. IP-related news and info Results in 0.51264 seconds Other interesting Feshpatents.com categories: Qualcomm , Schering-Plough , Schlumberger , Seagate , Siemens , Texas Instruments , 174 |
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