4.7 Article

Silver nanoparticles decorated reduced graphene oxide: Eco-friendly synthesis, characterization, biological activities and embryo toxicity studies

Journal

ENVIRONMENTAL RESEARCH
Volume 210, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2022.112864

Keywords

Angelica keiskei; rGO; rGO/AgNPs nanocomposite; MCF-7; Zebrafish; Embryo toxicity

Funding

  1. Basic Science Research Program through National Research Foundation of Korea [NRF2021R1A2C1094316]
  2. Postdoctoral Innovation Foundation of Shandong Province, People's Republic of China [202003043]

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This study aimed to synthesize eco-friendly rGO/AgNPs nanocomposite and evaluate their bioactivities and toxicity. The results showed that AgNPs displayed good antibacterial and anticancer activities, but also had higher toxic effects. However, the rGO/AgNPs nanocomposite exhibited significant antibacterial activity with low cytotoxicity, and could effectively reduce the embryo toxicity of AgNPs.
This study was aimed on the eco-friendly synthesis of silver nanoparticles (AgNPs), reduced graphene oxide (rGO) and AgNPs decorated rGO (rGO/AgNPs) nanocomposite and appraisal of their bioactivities and toxicity. As-prepared nanomaterials were established through high resolution X-ray diffraction (HR-XRD), high resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV-Vis. spectroscopy and Fourier transform infrared spectroscopy (FT-IR). In this study, leaves extract, graphene oxide (GO) and rGO did not show antibacterial and anticancer activities; no significant embryo toxicity was recorded. On the other hand, AgNPs displayed good antibacterial and anticancer activities; however, higher toxic effects were observed even at the lowest test concentration (0.7 mu g/ml). In case of rGO/AgNPs nanocomposite, significant antibacterial activity together with low cytotoxicity was noticed. Interestingly, the embryo toxicity of AgNPs was significantly reduced by rGO, implying the biocompatible nature of as-synthesized nanocomposite. Taken together, these results clearly suggest that rGO/AgNPs nano hybrid composite could be developed as the promising biomaterial for future biomedical applications.

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