This work addressed the antibacterial mechanism of copper ions dissolved from the Cu-bearing antibacterial stainless steel in the bacterial solution by electrochemical measurements and X-ray photoelectron spectroscopy...This work addressed the antibacterial mechanism of copper ions dissolved from the Cu-bearing antibacterial stainless steel in the bacterial solution by electrochemical measurements and X-ray photoelectron spectroscopy （XPS）.Experimental results showed that the antibacterial rate reached over 99.9% only when the reaction time between the antibacterial stainless steel and Escherichia coli （E.coli） lasted for 9 h,and the antibacterial stainless steel was more susceptible to the corrosion in the bacterial solution,which was attributed to more copper ions dissolved from surface of the steel contacted with the bacteria,a crucial reason leading to death of the bacteria.展开更多
基金基金项目：国家重点基础研究发展计划（973计划）资助项目（2011CB933202）中围科学院战略性先导科技专项课题资助项目（XDA06020101）+3 种基金国家杰出青年自然基金资助项目（61125105）国家高技术研究发展计划（863计划）资助项目（2009AA03Z411）中国科学院科研装备研制资助项目（Y2010015）国家自然科学基金资助项目（61027001,61002037）.Acknowledgements This work was supported by the Major National Scientific Research Plan （No.2011CB933202）, ＂Strategic Priority Research Program＂ of the Chinese Academy of Sciences （No.XDA06020101）, the National Science Fund for Distinguished Young Scholar （No. 61125105）, the Hi-Tech R＆D Program of China （No. 2009AA03Z411）, the CAS Program （No.Y2010015） and the National Natural Science Foundation of China （No. 61027001, No. 61002037）.
基金supported by the National Natural Science Foundation of China(No.50671101)
文摘This work addressed the antibacterial mechanism of copper ions dissolved from the Cu-bearing antibacterial stainless steel in the bacterial solution by electrochemical measurements and X-ray photoelectron spectroscopy （XPS）.Experimental results showed that the antibacterial rate reached over 99.9% only when the reaction time between the antibacterial stainless steel and Escherichia coli （E.coli） lasted for 9 h,and the antibacterial stainless steel was more susceptible to the corrosion in the bacterial solution,which was attributed to more copper ions dissolved from surface of the steel contacted with the bacteria,a crucial reason leading to death of the bacteria.
