Patent ID: 9521851
Filing Date: 2016-12-20
CPC Classification: A01N,C09D,C25D

Claim Text:
1. A method of fabricating antimicrobial complex surface comprising: providing an article, the article having a first metal complex surface treated by anodization, the first metal complex surface formed with a first pore; and providing a suspension having silver and pore sealing agent, the article soaked in the suspension to form a pore sealing layer having silver particles on the first metal complex surface such that the silver particles are distributed in the pore sealing layer; wherein the silver suspension is prepared by the steps comprising: formulating a silver nitrate solution having a molar concentration between 0.01M to 0.1M, adding a polyvinyl pyrrolidone, such that the polyvinyl pyrrolidone having a percentage by weight ranging between 0.027% to 0.054% in relation to the silver suspension; adding the silver nitrate solution drop by drop into a sodium borohydride solution, the sodium borohydride solution having a molar concentration between 0.00846M to 0.01M, such that the silver particles precipitate out of the silver nitrite solution; obtaining the silver particles by washing off the remaining polyvinyl pyrrolidone from the silver particles with an organic solvent; and evaporating the organic solvent on the silver particles and adding the pore sealing agent to make the silver suspension.