DataVXJournal of Nanoparticle ResearchPaper
journal article·2021-09

Safe-by-design gelatin-modified zinc oxide nanoparticles

Željko Janićijević, Ana Stanković, Bojana Žegura, Đorđe Veljović, Ljiljana Djekić, Danina Krajišnik, Metka Filipič, Magdalena M. Stevanović

Journal of Nanoparticle Research· Volume 23· Issue 9
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Source abstract

Abstract

We report an innovative low-cost wet precipitation synthesis method for gelatin-modified zinc oxide nanoparticles (GM ZnO NPs) at the inter- face between the gelatin hydrogel and aqueous elec- trolyte. Diffusion of ammonia through the hydrogel matrices with different gelatin contents induced pre- cipitation of the product in contact with the surface of the aqueous solution of zinc ions. The obtained precipitate was subjected to thermal treatment to partially decompose the adsorbed gelatin in the NP structure. Physicochemical properties of obtained GM ZnO NPs were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differential thermal analysis (DTA), thermo- gravimetry (TG), photon correlation spectroscopy (PCS), zeta potential measurements, and inductively coupled plasma-mass spectrometry (ICP-MS). The estimated mean crystallite size of GM ZnO NP pow- ders was in the range from 5.8 to 12.1 nm. The syn- thesized NPs exhibited nanosheet morphology and arranged into flake-like aggregates. The toxic poten- tial was investigated in vitro in human hepatocellular carcinoma cell line HepG2. The thiazolyl blue tetra- zolium bromide (MTS) assay was used to assess cell viability, 2′,7′-dichlor-fluorescein-diacetate (DCFH- DA) assay to examine the formation of intracellu- lar reactive oxygen species (ROS), and comet assay to evaluate the genotoxic response. GM ZnO NPs slightly reduced HepG2 cell viability, did not induce ROS formation, and showed low genotoxic potential at very high doses (100 μg mL−1). ZnO NPs fabri- cated and modified using the proposed methodol- ogy deserve further study as potential candidates for antibacterial agents or dietary supplements with low overall toxicity.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

PolymersNanomaterials

OpenAlex topics: Nanoparticles: synthesis and applications · Electrochemical Analysis and Applications · Advanced Nanomaterials in Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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