氧化亚铜的SiO_2复合改性及其抗菌性研究

Study on SiO_2 Compound Modification of Cuprous Oxide and Its Antibacterial Properties

用葡萄糖还原法制备纳米氧化亚铜,考察不同表面活性剂和温度对氧化亚铜形貌的影响。对四面体氧化亚铜(Cu2O)表面进行了SiO2包覆改性,以避免Cu2O与纤维在纺丝挤出工艺过程中的直接接触。采用FESEM、XRD和XPS分别对Cu2O及其包覆体Cu2O@SiO2的形貌、结晶性和元素组成进行了表征。结果表明,Cu2O表面被SiO2均匀包覆。Cu2O和Cu2O@SiO2对金黄色葡萄球菌的抗菌性进行实验研究,结果显示,在接触时间为30min时,Cu2O和Cu2O@SiO2的最小抑菌浓度分别为10μg/mL和25μg/mL。

The glucose reduction method was used to successfully prepare cuprous oxide and the effects of different surfactants and temperatures on morphology of cuprous oxide were investigated.SiO2 modification was conducted on the surface of tetrahedral cuprous oxide（Cu2O）so as to avoid direct contact between Cu2 O and fiber in the extrusion process.The morphology,crystallinity and element of Cu2 O and Cu2O@SiO2 samples were characterized by SEM,EDS,XRD and XPS.The results show that Cu2 O surface is evenly coated by SiO2.Antibacterial property experiment of cuprous oxide on staphylococcus aureus was studied with Cu2 O and Cu2O@SiO2.The results indicate the minimal inhibitory concentration of Cu2 O and Cu2O@SiO2is 10μg/mL and 25μg/mL respectively when the contact time is 30 min.