Method for preparing nano-complex-powder comprising multiple components and silver

Abstract

Disclosed is a method for preparing nano-complex-powder comprising multiple components and silver. The method includes the steps of mixing 0.01-5.0% (weight percentage concentration) of silver nitrate solution with 0.001-5.0% of zinc nitrate solution, 0.001-5.0% of iron nitrate solution and 0.001-5.0% of copper nitrate solution, adding adequate amount of surfactant solution, and adding 0.001-1.0% of hydrazine hydrate gradually with stirring, and the solution is mixed for another 10-30 minutes to obtain a solution comprising multiple nano-complex-particle. After inertness, washing and drying at low temperature, the nano-complex-powder comprising multiple components and silver is obtained. The silver content in the product powder is about 40-99.6%, and the particle size is 10-100 nm. An advantage of the present invention is that a nano-complex-powder comprising multiple components and silver is achievable, wherein the particle size is 10-100 nm, and the complex elements and contents are adjustable according to practical requirements and the particle is uniform; raw materials are obtained easily, the process is simple, low cost, and easily industrialized. The application of the nano-complex-powder comprising multiple components and silver is wide and can be used as a nano-antibacteria and special conductive materials. Applications of nano-complex-silver-zinc-copper powder is more effective and broadly due to the coordination in the multiple antibacterial components.

1 . A method for preparing nano-complex-powder comprising multiple components and silver, comprising the steps of: 
 (1) mixing 0.01-5.0% (weight percentage concentration) of silver nitrate solution with 0.001-5.0% of zinc nitrate solution, 0.001-5.0% of iron nitrate solution and 0.001-5.0% of copper nitrate solution, adding 0.01-5.0% of surfactant solution into the mixed solution, and adding 0.001-1.0% of hydrazine hydrate gradually with stirring, molar ratio of the silver nitrate, zinc nitrate, iron nitrate, and copper nitrate, surfactant, and hydrazine hydrate being 1.0: 0.001-0.31: 0.001-0.48: 0.001-0.43: 0.001-1.0: 0.5-4.5, stopping the addition of hydrazine hydrate solution when pH value reaches 6.5-7.5, and mixing the solution for another 10-30 minutes to obtain a solution comprising multiple nano-complex-particle; and    (2) staying the reaction product obtained in step (1) for 6-12 hours to allow nano-silver particles inert, obtaining the nano-complex-powder comprising multiple components and silver after separation, washing and drying at low temperature, wherein the silver content in the product powder is 40-99.6%, and the particle size in the powder is 10-100 nm.    
   
   
       2 . The method as claimed in  claim 1 , wherein composition of the nano-complex-powder comprising multiple components and silver is selected from the group consisting of 80.0-99.8% Ag: 0.1-20.0% Zn: 0.001% Fe: 0.001% Cu, 80.0-99.8% Ag: 0.001% Zn: 0.1%-20.0% Fe: 0.001% Cu, 60.0-99.7% Ag: 0.1-20.0% Zn: 0.1-20.0% Fe: 0.001% Cu, 60.0-99.7% Ag: 0.1-20.0% Zn: 0.001% Fe: 0.1-20.0% Cu, 60.0-99.7% Ag: 0.001% Zn: 0.1%-20% Fe: 0.1-20.0% Cu, and  40 . 0 -99.6% Ag: 0.1-20.0% Zn:  0 . 1  -20.0% Fe: 0.1-20.0% Cu.