| 吴静,施梦洁,匡淑敏,吴娟,林伟,张曼莹,贺香红,梁国斌.化学通报,2019,82(8):749-753. |
| Cu2O/Ag纳米复合材料的绿色制备与抗菌性能研究 |
| Green preparation of Cu2O/Ag nanocomposite and its antibacterial properties research |
| 投稿时间：2019-04-24 修订日期：2019-05-24 |
| DOI： |
| 中文关键词: Cu2O/Ag纳米复合材料 抗菌性能 抗菌机理 |
| 英文关键词:Cu2O/Ag nanocomposite, antibacterial properties, antibacterial mechanism |
| 基金项目:江苏理工学院人才引进项目（KYY17021）江苏省研究生培养创新工程研究生科研与实践创新计划（SJCX18-1001） |
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| 中文摘要: |
| 本实验以醋酸铜为铜源、硝酸银为银源并利用天然蜂蜜中的葡萄糖与还原酶为还原剂在不存在模板剂无需高压反应釜的条件下、环保地、简便地制备了粒径为数百纳米的Cu2O/Ag复合材料。并采用X射线衍射(XRD),扫描电子显微镜(SEM)对材料的结构与形貌进行了表征。通过抑菌圈法证明Cu2O/Ag复合材料相比Cu2O对大肠杆菌有着更好的抑菌性能,并找到了合成具有优异抗菌性能Cu2O/Ag复合材料最适的硝酸银添加量,通过分析Cu2O/Ag对大肠杆菌生长曲线影响得知当Cu2O/Ag复合材料的浓度达到10μg/mL时Cu2O/Ag复合材料能够彻底抑制大肠杆菌的生长。通过利用SEM观察Cu2O/Ag复合材料对大肠杆菌作用过程中菌种形貌的变化得知Cu2O/Ag复合材料对大肠杆菌的抗菌作用机理是通过破坏细胞膜结构使细菌断裂成小段进而将细菌彻底分解为大分子。证明Cu2O/Ag复合材料在作为抗菌剂的领域内具有潜在的实际应用价值。 |
| 英文摘要: |
| In this experiment, copper acetate was used as the copper source, silver nitrate was used as the silver source, and glucose and reductase in natural honey were used as reducing agents. The particle size was prepared environmentally and conveniently without the need for a high pressure reactor in the absence of a template. Hundreds of nanometers of Cu2O/Ag composites. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the structure and morphology of the material. It was proved by the inhibition zone method that Cu2O/Ag composites have better antibacterial properties against Escherichia coli than Cu2O, and the optimum amount of silver nitrate added to synthesize Cu2O/Ag composites with excellent antibacterial properties was found. By analyzing Cu2O/ The effect of Ag on E. coli growth curve shows that Cu2O/Ag composite can completely inhibit the growth of E. coli when the concentration of Cu2O/Ag composite reaches 10μg/mL. By using SEM to observe the changes of the morphology of Cu2O/Ag composites in the process of Escherichia coli, it is known that the antibacterial mechanism of Cu2O/Ag composites on Escherichia coli is to break the bacteria into small segments and then completely decompose the bacteria by destroying the cell membrane structure. For large molecules. It is proved that Cu2O/Ag composites have potential practical application value in the field of antibacterial agents. |
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