纳米氧化锌与普通氧化锌抑菌性能差异研究

试验研究纳米氧化锌与普通氧化锌对大肠杆菌和金黄色葡萄球菌抑菌作用。试验结果表明,当纳米氧化锌质量分数为3%时,纳米氧化锌的抑菌效果出现了一个陡然的上升;当纳米氧化锌质量分数为4%时,对大肠杆菌及金黄色葡萄球菌产生了明显抑菌效应,紫外线光照时抑菌率分别达到了97.1%和98.3%;当纳米氧化锌质量分数为5%时,无论是紫外线光照还是日光灯照射时抑菌率几乎达到了100%。在日光灯照射条件下,无论是对大肠杆菌还是金黄色葡萄球菌,纳米氧化锌均比普通氧化锌有更好的抑菌作用。当纳米氧化锌和普通氧化锌质量分数均为5%条件下,对大肠杆菌的抑菌率分别达到97.9%和52.9%;对金黄色葡萄球菌的抑菌率分别达到98.8%和68.3%。由此可知,纳米氧化锌在紫外线光照射下的抑菌作用高于日光灯照射;纳米氧化锌对金黄色葡萄球菌的抑制作用高于对大肠杆菌的抑菌作用;纳米氧化锌的抑菌性能强于普通氧化锌。

Research on the difference of bactericide performance between Nano-ZnO and ZnO

The experiment studies the bactericide effects of Nano-ZnO and ZnO on Escherichia coli and Staphylococcus aureus.The results indicated that: bactericide impacts of Nano-ZnO appeared a zoom when its concentration was 3%. Nano-ZnO engendered a obvious bactericide effects on Escherichia coli and Staphylococcus aureus when its concentration was 4%,which bactericide rate was 97.1% and 98.3% respectively at ultravioletion. Bactericide rate was almost reached 100% whether ultravioletion or illumination when its concentration was 5%. Nano-ZnO had much more bactericide effects on whether Escherichia coli or Staphylococcus than ZnO at illumination.When the concentration of Nano-ZnO and ZnO was 5%, their bactericide effects on Escherichia coli was 97.9% and 52.9% respectively, and bactericide effects on Staphylococcus was 98.8%和68.3%.Thus it can be seen that Nano-ZnO had much more bactericide effects at ultravioletion than illumination, Nano-ZnO had much more bactericide effects on Staphylococcus than Escherichia coli , Nano-ZnO had much more bactericide effects than ZnO.