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Silver Nanoparticles-Silk Fibroin Nanocomposite Based Colorimetric Bio-Interfacial Sensor for On-Site Ultra-Trace Impurity Detection of Mercury Ions

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Innovative colorimetric biosensing platform has been realized by in-situ synthesis of silver nanoparticles in silk-fibroin matrix derived from domesticated silkworm species Bombyx mori. 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.

Keywords: Bionanocomposite; Colorimetric Bio-Interfacial Sensor; Heavy Metals; Silk Fibroin; Silver Nanoparticles

Document Type: Research Article

Affiliations: 1: P.G. Department of Zoology and Research Centre, Shri Shiv Chhatrapati College of Arts, Commerce and Science, Junnar 410502, Pune, India 2: Nano Particles Technology Laboratory, School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, South Korea 3: Centre for Materials for Electronics Technology (C-MET), Panchwati Off Pashan Road, Pune 411008, India

Publication date: April 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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