...
首页> 外文期刊>Radiation Physics and Chemistry >gamma-Ray synthesis of starch-stabilized silver nanoparticles with antibacterial activities
【24h】

gamma-Ray synthesis of starch-stabilized silver nanoparticles with antibacterial activities

机译:γ-射线合成具有抗菌活性的淀粉稳定化银纳米颗粒

获取原文
获取原文并翻译 | 示例
           

摘要

Silver nanoparticles(Ag NPs)are fabricated through gamma-irradiation reduction of silver ions in aqueous starch solutions.The UV-vis analyses show smaller sizes of Ag NPs produced,with higher yields,as the irradiation doses and/or Ag~+concentrations are increased.Higher concentrations of starch enhance the yields of Ag NPs,with no significant effects on their size.The most economical Ag NPs are produced at 5 kGy gamma-irradiation of a 2 X 10~3 M solution of AgNO3 containing 0.5% starch.They show a relatively narrow size distribution,indicated by TEM and its corresponding size distribution histogram.The XRD pattern confirms the face-centered cubic(fcc)Ag NPs embedded in starch molecules.Interactions between these nanoparticle surfaces and starch oxygen atoms are indicated by FT-IR.Antibacterial activities of Ag NPs against Escherichia coli appear dependent on the gamma-ray doses applied.
机译:通过对淀粉水溶液中的银离子进行γ射线辐照还原来制备银纳米颗粒(Ag NPs)。紫外可见分析表明,随着辐照剂量和/或Ag〜+浓度的增加,产生的Ag NPs尺寸更小,产率更高。较高的淀粉浓度可提高Ag NP的产量,而对它们的大小无明显影响。最经济的Ag NP是在2 k X 10〜3 M含0.5%淀粉的AgNO3溶液的5 kGyγ辐照下产生的。它们显示出相对较窄的尺寸分布,由TEM及其相应的尺寸分布直方图表示.XRD图谱证实了淀粉分子中嵌入的以面心立方(ccc)Ag NP的存在,这些纳米粒子表面与淀粉氧原子之间的相互作用用FT表示。 -IR.Ag NPs对大肠杆菌的抗菌活性似乎取决于所施加的伽马射线剂量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号