Dual activity of copper modified nanotextured stainless steel

Abstract

An exemplary embodiment of the present disclosure provides a method of forming an antibacterial material, comprising: providing a stainless-steel material; etching the stainless-steel material to render a plurality of nanopores and/or nanoprotrusions on at least a portion of a surface of the stainless steel material to create a nanotextured stainless steel material; and depositing an antimicrobial material on at least a portion of the nanotextured stainless steel.

What is claimed is: 
     
         1 . A method of forming an antibacterial material, comprising:
 providing a stainless steel material;   etching the stainless steel material to render a plurality of nanopores and/or nanoprotrusions on at least a portion of a surface of the stainless steel material to create a nanotextured stainless steel material; and   depositing an antimicrobial material on at least a portion of the nanotextured stainless steel.   
     
     
         2 . The method of  claim 1 , wherein the antimicrobial material comprises copper. 
     
     
         3 . The method of  claim 1 , wherein the etching occurs over a period of at least 30 seconds. 
     
     
         4 . The method of  claim 1 , wherein the nanotextured stainless steel material has a pore size distribution of from 10-50 nm. 
     
     
         5 . The method of  claim 1 , wherein the plurality of nanopores and/or nanoprotrusions have a vertical depth/height of 10-50 nm. 
     
     
         6 . The method of  claim 1 , wherein depositing the antibacterial material occurs for 4 minutes to 15 minutes and with at least 0.3 amps of current. 
     
     
         7 . The method of  claim 1 , wherein the antibacterial material forms a coating with a thickness of between 1 and 10 microns. 
     
     
         8 . The method of  claim 1 , wherein the stainless steel material is SS316L. 
     
     
         9 . The method of  claim 1 , further comprising sonicating the stainless steel material in an organic solvent. 
     
     
         10 . The method of  claim 1 , wherein etching the stainless steel material comprises electrochemical etching. 
     
     
         11 . An antibacterial material, comprising:
 nanotextured stainless steel; and   a copper coating on at least a portion of the nanotextured stainless steel.   
     
     
         12 . The antibacterial material of  claim 11 , wherein the nanotextured stainless steel comprises a plurality of nanopores and/or nanoprotrusions. 
     
     
         13 . The antibacterial material of  claim 12 , wherein the nanotextured stainless steel material has a pore size distribution of from 10-50 nm. 
     
     
         14 . The antibacterial material of  claim 12 , wherein the plurality of nanopores and/or nanoprotrusions have a vertical depth/height of 10-50 nm. 
     
     
         15 . The antibacterial material of  claim 11 , wherein the copper coating has a thickness of between 1 and 10 microns. 
     
     
         16 . The antibacterial material of any of  claim 11 , wherein the stainless steel material is SS316L. 
     
     
         17 . A method of treating a contaminated substance, comprising placing the substance in contact with the antibacterial material of  claim 11 . 
     
     
         18 . The method of  claim 17 , wherein the substance comprises bacteria, and wherein the material causes at least a portion of the bacteria to die. 
     
     
         19 . The method of  claim 18 , wherein the bacteria comprises Gram-negative and Gram-positive bacteria, and wherein, the material causes at least a portion of the Gram-negative and Gram-positive bacteria to die. 
     
     
         20 . The method of  claim 17 , wherein the substance comprises yeast, and wherein the material causes at least a portion of the yeast to die.