• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Biotechnology >Rapid biosynthesis of cadmium sulfide (CdS) nanoparticles using culture supernatants of Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633 and Lactobacillus acidophilus DSMZ 20079T
【24h】

Rapid biosynthesis of cadmium sulfide (CdS) nanoparticles using culture supernatants of Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633 and Lactobacillus acidophilus DSMZ 20079T

机译：使用大肠杆菌ATCC 8739，枯草芽孢杆菌ATCC 6633和嗜酸乳杆菌DSMZ 20079T的培养上清液快速生物合成硫化镉（CdS）纳米颗粒

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cell-associated biosynthesis of cadmium sulfide (CdS) nanoparticles has been reported to be rather slow and costly. In this study, we report on a rapid and low cost biosynthesis of CdS using culture supernatants of?Escherichia coli?ATCC 8739,Bacillus subtilis?ATCC 6633 and?Lactobacillus acidophilus?DSMZ 20079T. The synthesis was performed at room temperature in the laboratory ambience and CdS nanoparticles were formed within 24 h. Ultraviolet (UV)–visible spectroscopy study revealed the build-up of absorption bands at 419.5, 381.5 and 362.5 nm for?E. coliATCC 8739,?B. subtilis?ATCC 6633 and?L. acidophilus?DSMZ 20079T, respectively for assisted synthesis of CdS nanoparticles. X-ray diffraction (XRD), transmission electron microscopy (TEM) and fluorescence spectral analyses were performed to ascertain the formation of CdS nanoparticles. Individual nanoparticles as well as few aggregates having the size of 2.5 to 5.5 nm were found. The process of extracellular and fast biosynthesis may help in the development of an easy and eco-friendly route for?the?synthesis of CdS nanoparticles.
机译：据报道，硫化镉（CdS）纳米粒子的细胞相关生物合成相当缓慢且昂贵。在这项研究中，我们报告了使用大肠杆菌大肠杆菌ATCC 8739，枯草芽孢杆菌ATCC 6633和嗜酸乳杆菌DSMZ 20079T的培养上清液快速，低成本地生物合成CdS的方法。在室温下在实验室环境中进行合成，并在24小时内形成CdS纳米粒子。紫外线（UV）可见光谱研究揭示了？E在419.5、381.5和362.5 nm处吸收带的建立。大肠杆菌ATCC 8739 ,?枯草杆菌ATCC 6633和L. acidophilus？DSMZ 20079T分别用于辅助合成CdS纳米粒子。进行X射线衍射（XRD），透射电子显微镜（TEM）和荧光光谱分析以确定CdS纳米颗粒的形成。发现单独的纳米颗粒以及具有2.5至5.5nm尺寸的少量聚集体。细胞外快速生物合成的过程可能有助于开发一种简便而环保的CdS纳米粒子合成路线。

著录项

相似文献

  • 外文文献
  • 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