聚邻苯二胺/Ag-Pt 纳米复合材料的合成与表征及其抗菌活性的改善。
Synthesis and characterization of polyaniline/Ag-Pt nanocomposite for improved antibacterial activity.
机构信息
Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi 630003, Tamilnadu, India.
出版信息
Colloids Surf B Biointerfaces. 2013 Mar 1;103:9-14. doi: 10.1016/j.colsurfb.2012.10.044. Epub 2012 Nov 2.
Polyaniline, polyaniline/Ag-Pt nanocomposite and bimetal (Ag-Pt) colloidal solution were chemically synthesized and characterized by UV-vis, XRD, FT-IR, TGA, HRSEM with EDAX and HRTEM techniques. The results reveal that there was a strong interaction between Ag-Pt nanocomposite and polyaniline chains. This interaction makes only small changes in the backbone chain of polyaniline/Ag-Pt nanocomposite when compared with polyaniline. TGA result revealed greater thermal stability of the composite. HRSEM images showed pebble like morphology for polyaniline/Ag-Pt nanocomposite. The average grain size of Ag-Pt nanoparticle was found to be 2-5 nm, which is confirmed by HRTEM analysis. The polyaniline and polyaniline/Ag-Pt nanocomposite were tested for antibacterial activity. The composite showed improved inhibition efficiency with a maximum zone diameter of 30 ± 1.25 mm against Staphylococcus aureus. This is the first report on the synthesis and its antibacterial activity of polyaniline/Ag-Pt nanocomposite.
聚苯胺、聚苯胺/Ag-Pt 纳米复合材料和双金属（Ag-Pt）胶体溶液通过 UV-vis、XRD、FT-IR、TGA、HRSEM 与 EDAX 和 HRTEM 技术进行化学合成和表征。结果表明，Ag-Pt 纳米复合材料与聚苯胺链之间存在强烈的相互作用。与聚苯胺相比，这种相互作用使得聚苯胺/Ag-Pt 纳米复合材料的主链链只有很小的变化。TGA 结果表明该复合材料具有更高的热稳定性。HRSEM 图像显示聚苯胺/Ag-Pt 纳米复合材料具有卵石状形态。通过 HRTEM 分析证实，Ag-Pt 纳米颗粒的平均粒径为 2-5nm。对聚苯胺和聚苯胺/Ag-Pt 纳米复合材料进行了抗菌活性测试。该复合材料对金黄色葡萄球菌的最大抑菌环直径为 30±1.25mm，抑菌效率提高。这是首次报道聚苯胺/Ag-Pt 纳米复合材料的合成及其抗菌活性。
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