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研究不同纳米二氧化钛复合材料抗菌活性和抑菌率,选择更为有效的纳米二氧化钛复合抗菌材料。通过牛津杯法确定材料的抗菌活性,振荡摇瓶法测定抑菌率,通过扫描电镜探索抗菌机理。复合材料(纳米Ti O2、氧化石墨烯、硫化镉三种材料复合而成)对大肠杆菌抑菌率可达80.5%,对金黄色葡萄球菌抑菌率可达87.5%;氧化石墨烯能够提高二氧化钛可见光的抗菌活性和抑菌率;抗菌材料作用后的细菌表面凹凸不平,胞容物流出,菌体萎缩死亡。
To study the antibacterial activity and antibacterial activity of different nano-TiO2 composite materials, choose more effective nano-TiO2 composite antibacterial materials. The antibacterial activity of the material was determined by the Oxford cup method. The antibacterial rate was determined by shake flask method and the antibacterial mechanism was explored by scanning electron microscopy. The composite materials (nano-Ti O2, graphene oxide and cadmium sulfide) are 80.5% against Escherichia coli and 87.5% against Staphylococcus aureus. Graphene oxide can increase the photocatalytic activity of titanium dioxide Visible light antibacterial activity and antibacterial rate; antibacterial material after the role of bacteria on the surface uneven, cell content outflow, cell death atrophy.