Preparation and Characterization of Magnetic Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 Nanoparticles and Investigation of Their Photocatalytic and Anticancer Properties on PANC1 Cells

Abstract

Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 magnetic nanoparticles were prepared at different molar ratios of PrVO4 to previous layers (Fe3O4/CdWO4) via the co-precipitation method assisted by a sonochemical procedure, in order to investigate the photocatalytic performance of these systems and their cytotoxicity properties. The physico-chemical properties of these magnetic nanoparticles were determined via several experimental methods: X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier transformation infrared spectroscopy and ultraviolet-visible diffuse reflection spectroscopy, using a vibrating sample magnetometer and a scanning electron microscope. The average sizes of these nanoparticles were found to be in the range of 60–100 nm. The photocatalytic efficiency of the prepared nanostructures was measured by methylene blue degradation under visible light (assisted by H2O2). The magnetic nanosystem with a 1:2:1 ratio of three oxide components showed the best performance by the degradation of ca. 70% after 120 min of exposure to visible light irradiation. Afterwards, this sample was used for the photodegradation of methyl orange, methyl violet, fenitrothion, and rhodamine-B pollutants. Finally, the mechanism of the photocatalytic reaction was examined by releasing •OH under UV light in a system including terephthalic acid, as well as O2−, OH, and hole scavengers. Additionally, the cytotoxicity of each synthesized sample was assessed using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay against the human cell line PANC1 (cancer), and its IC50 was approximately 125 mg/L.

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

“…There was a new strong band around 1,087 cm −1 in Figure 7B that came from the Si-O bond in SiO 2 (Kunarti et al, 2016) and the vibration band for the fingerprint of Ti-O-Ti bond in Figure 6C, which is located around 700 cm -1 (Kunarti et al, 2016;Doosti et al, 2018). The presence of a strong peak at 827 cm -1 is due to the V-O stretching vibration of VO 4 which has been displayed in Figure 7D (Marsooli et al, 2019). Figure 7E is related to the N 5 sample after a photocatalytic reaction period, which is in contrast to Figure 7D.…”

Functionalization of Graphene Oxide Nanosheets Can Reduce Their Cytotoxicity to Dental Pulp Stem Cells

“…Despite all the biomedical applications of the nanostructures, there is a need for more strategies and techniques for better understanding the effects of nGO derivatives on human health and the environment [13,14]. nGO may be considered as a threat due to its cytotoxicity.…”

Synthesis of Fe3O4/CdWO4/carbon dots heterostructure with excellent visible light photocatalytic stability and activity for degradation of 4-nitrophenol and organic pollutant

“…We weighted up to 0.433 g of FeCl 3 Á6H 2 O and dissolved in a mixture solution of ethanol and deionized water under stirred until a clear solution was obtained [38]. Then, 1.0 g of propylene oxide was slowly added to the solution and stirring was continued to make a red-brown gel within 5 min.…”