Characterization and In Vitro Toxicity of French Process Zinc Oxide Nanoparticles with High Surficial Zinc

Abstract:

In this study, we investigated in vitro toxicity of ZnO nanopowder on L929 fibroblast cell lines. The ZnO nanoparticles were observed to possess relatively more surficial zinc compared to oxygen. Field-emission scanning electron microscope (FESEM) data revealed that the particle morphologies consisted of nanorods, platelets and nodules between 40-100 nm size range. EDS confirmed that there were more zinc elements on the surfaces of the particles. XRD results showed that the calculated average crystallite size of ZnO nanopowder was 44.28 nm. The optical band gap calculated was 3.298 eV based on UV-visible absorption spectra. In vitro toxicity results showed that ZnO concentration at 0.3125mM, 0.625mM and 1.25 mM were considered non-toxic to L929 cell line since the cell viability was higher than 70 % after 72 hours treatment whereas the ZnO nanopowder concentration above 2.5mM was considered toxic. High surficial zinc atoms on ZnO particles could have been a significant factor in cell toxicity.

• Periodical: Solid State Phenomena (Volume 290)
• Pages: 274-279
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.290.274
• Online since: April 2019
• Authors: Sufiniza Nordin, Shahrom Mahmud*, Azman Seeni, Nur Mariam Kamaruddin, Nur Syuhada Ahmad
• Keywords: In Vitro, L929, Toxicity

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