Functional Materials, Saarland University, Germany; Université de Lorraine, CNRS, IJL, F-54000, Nancy, France.
Inorganic Solid State Chemistry, Saarland University, Germany.
Micron. 2019 Dec;127:102759. doi: 10.1016/j.micron.2019.102759. Epub 2019 Sep 24.
Copper surface after antibacterial test against E. coli was examined in the aspect of corrosion. Results from scanning electron microscope (SEM), grazing incidence X-ray diffractometer (GIXRD) and Raman spectroscopy together confirmed less oxidation on copper surface with the presence of E. coli. The inhibition of the cuprous oxide (CuO) layer instead ensured the continuous exposure of copper surface, letting localised corrosion attacks observable and causing a stronger release of copper ions. These phenomena are attributed to the fact that E. coli act as ions reservoirs since high amount of copper accumulation were found by energy dispersive X-ray spectroscopy (EDS).
对大肠杆菌进行抗菌测试后的铜表面进行了腐蚀方面的研究。扫描电子显微镜（SEM）、掠入射 X 射线衍射仪（GIXRD）和拉曼光谱的结果共同证实，在有大肠杆菌存在的情况下，铜表面的氧化程度较低。氧化铜（CuO）层的抑制作用确保了铜表面的持续暴露，使局部腐蚀得以观察，并导致铜离子的更强释放。这些现象归因于大肠杆菌充当离子储存库的事实，因为通过能量色散 X 射线光谱（EDS）发现了大量的铜积累。
