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Toxicity of microwave-synthesized silver-reduced graphene oxide nanocomposites to the microalga : Comparison with the hydrothermal method synthesized counterparts.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Toxicity of microwave-synthesized silver-reduced graphene oxide nanocomposites to the microalga : Comparison with the hydrothermal method synthesized counterparts."

The increased applications of nanomaterials in industry and biomedicine have resulted in a rising concern about their possible toxic impacts on living organisms. It has been claimed that the phytosynthesized nanomaterials have lower toxicity in comparison to their chemically synthesized counterparts. Therefore, it is important to evaluate their toxic effects on the environment. In the present study, we investigated the toxic effects of microwave-synthesized silver-reduced graphene oxide nanocomposites (MS-Ag-rGO) on . Algal cells were treated by 1, 2, 4 and 6 mg L MS-Ag-rGO for 24 h. The obtained data with three replicates were examined using analysis of variance. Analysis of different growth parameters revealed that MS-Ag-rGO possessed significant dose-dependent toxic effect on . Scanning electron microscope and fluorescence microscope images of the treated cells established morphological shrinkages and alteration in position of nucleoli. Moreover, reduction in the phenol and flavonoid contents, enhancement of HO content, changes in the antioxidant enzymes activity and decreases in the growth parameters as well as photosynthetic pigments quantities confirmed the toxicity of MS-Ag-rGO to the cells. Our findings revealed that MS-Ag-rGO possessed higher toxicity on than Ag-rGO synthesized by hydrothermal technique.

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This article was published in the following journal.

Name: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
ISSN: 1532-4117
Pages: 1-11

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