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Preparation and characterisation of silk fibroin-silver nanoparticles (SF-AgNPs) composite films

机译:丝素蛋白-银纳米颗粒(SF-AgNPs)复合膜的制备与表征

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摘要

The development of reliable, environmentally friendly processes for the synthesis of noble metal nanoparticles is an important aspect of nanotechnology today. One such approach that shows immense potential is based on the in situ synthesis of silver nanoparticles (AgNPs) using a natural biological material such as aqueous silk fibroin (SF) solution obtained from Bombyx mori silk. In the present study, the SF/AgNPs colloidal solution were prepared by in situ reducing AgNO_3 with SF at room temperature under white light without any reducing agent. The SF/AgNPs composite films were prepared by solution casting method and were characterised by UV-visible (UV-vis) spectroscopy, Fourier transform infrared spectroscopy, photoluminescence and transmission electron microscope (TEM) techniques. The UV-vis spectroscopy revealed the formation of AgNPs by showing a typical surface plasmon resonance band at 412 nm from the UV-vis spectrum. The TEM images show that formed nanoparticles are roughly spherical and of uniform particle size, and the average particle size is 16 nm.
机译:如今,开发可靠,环保的合成贵金属纳米颗粒的方法是当今纳米技术的重要方面。一种显示出巨大潜力的方法是基于使用天然生物材料(例如从家蚕获得的蚕丝丝蛋白(SF)水溶液)原位合成银纳米颗粒(AgNPs)的方法。在本研究中,SF / AgNPs胶体溶液是通过在室温下在白光下用SF原位还原AgNO_3制备的,该溶液中不添加任何还原剂。通过溶液流延法制备了SF / AgNPs复合膜,并通过紫外-可见(UV-vis)光谱,傅里叶变换红外光谱,光致发光和透射电子显微镜(TEM)技术对其进行了表征。紫外可见光谱通过显示典型的表面等离子体共振带在紫外可见光谱的412 nm处揭示了AgNP的形成。 TEM图像显示形成的纳米颗粒大致为球形并且具有均匀的粒径,并且平均粒径为16nm。

著录项

  • 来源
    《Materials Research Innovations》 |2017年第4期|210-214|共5页
  • 作者单位

    Department of Studies in Physics, Mangalore University, Mangalagangotri, Mangalore 574 199, India;

    Department of Studies in Physics, Mangalore University, Mangalagangotri, Mangalore 574 199, India;

    Department of Chemistry, Mangalore University, Mangalagangotri, Mangalore 574 199, India;

    Department of Material Science, Mangalore University, Mangalagangotri, Mangalore 574 199, India;

    Electron Microscopy Division, National Centre for Biological Sciences, Bangalore 560 065, India;

    School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;

    Department of Studies in Physics, Mangalore University, Mangalagangotri, Mangalore 574 199, India,School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Silk fibroin; Silver nanoparticles; UV-visible; Photoluminescence; TEM;

    机译:丝素蛋白;银纳米颗粒;紫外线可见光致发光;透射电镜;

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