P.G. Department of Zoology and Research Centre, Shri Shiv Chhatrapati College of Arts, Commerce and Science, Junnar 410502, Pune, India.
Nano Particles Technology Laboratory, School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea.
J Nanosci Nanotechnol. 2020 Apr 1;20(4):2122-2129. doi: 10.1166/jnn.2020.17335.
Innovative colorimetric biosensing platform has been realized by synthesis of silver nanoparticles in silk-fibroin matrix derived from domesticated silkworm species . As-synthesized nano-biocomposite dispersion was characterized by UV-Vis spectroscopy and transmission electron microscopy. In a pilot attempt to develop hassle free on-site screening protocol, such green hybrid systems were explored for colorimetric detection of broad range of metal ion targets, viz. toxic heavy metals such as mercury and chromium (which adversely affect hydrosphere, lithosphere, anthroposphere and biosphere) as well as relatively less-toxic metals like copper and iron in a solution. Quite interestingly, our simple biointerfacial-sensing approach reveals highly selective colorimetric sensor response down to ppb level for mercury ions analyte.
通过在家蚕物种来源的丝素蛋白基质中合成银纳米粒子，实现了创新的比色生物传感平台。通过紫外-可见光谱和透射电子显微镜对合成的纳米生物复合材料分散体进行了表征。在尝试开发无麻烦的现场筛选方案时，探索了这种绿色混合系统，用于比色检测广泛的金属离子靶标，例如汞和铬等有毒重金属（它们会对水圈、岩石圈、人类圈和生物圈造成不利影响）以及铜和铁等相对毒性较小的金属在溶液中。有趣的是，我们简单的生物界面传感方法对汞离子分析物表现出高达 ppb 级的高选择性比色传感器响应。
