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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:07 |
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Conference: Bucharest University Faculty of Physics 2021 Meeting
Section: Polymer Physics
Title:
Synthesis and preliminary characterization of FexOy-CTAB compounds
Authors:
Gabriel PREDOI (1), Simona Liliana ICONARU (2), Stefania Mariana RAITA (1), Liliana GHEGOIU (2), Monica-Luminita BADEA (2), Carmen Steluta CIOBANU (2), Carmen Mariana CHIFIRIUC (3,4,5), Daniela PREDOI (2)
Affiliation:
1) Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Splaiul Independentei, Sector 5, 050097 Bucharest, Romania;
2) Multifunctional Materials and Structures Laboratory, National Institute of Materials Physics, Atomistilor Street, No. 405A, P.O. Box MG 07, 077125 Magurele, Romania;
3) Life, Environmental and Earth Sciences Division, Research Institute of the University of Bucharest (ICUB),University of Bucharest, 060023 Bucharest, Romania
4) Microbiology Department, Faculty of Biology, University of Bucharest, 1–3 Portocalelor Lane,
77206 Bucharest, Romania
5) Academy of Romanian Scientists, Ilfov Street, No. 3, 50044 Bucharest, Romania
*corresponding author: dpredoi@gmail.com
E-mail
dpredoi@gmail.com
Keywords:
As (III) removal, FexOy-CTAB nanocomposites, water treatment technology
Abstract:
Recently, the development of new materials with new specific properties that could be used successfully in environmental remediation has become a priority among researchers working in various scientific fields [1]. In recent years, the interest for the efficient synthesis of magnetic iron oxide nanoparticles and their functionalization has increased considerably due to their wide range of use in various applications, as well as their use for adsorption of metal ions from aqueous solutions [2- 4]. Previous studies have reported that different types of iron oxide, have the ability to remove both As (III) and As (V) from water [3, 5]. The aim of this study was to obtain CTAB-coated iron oxide powders (M-CTAB) by an adapted method. The obtained M-CTAB powders were investigated by: X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and batch adsorption experiments. Also, preliminary qualitative evaluation of cell viability and cell morphology by fluorescence microscopy was performed. The results of XRD studies highlight the purity of the obtained samples as well as the nanometric size of the particles (17.26 ± 3 nm). The SEM micrograph revealed the spherical morphology of the nanoparticles. In the FTIR spectra can be easily identified the vibrational bands which are attributed to the stretching vibration and are characteristic of the iron from the tetrahedral and octahedral positions, respectively. AAS studies indicate that the best removal efficiency of As (III) from aqueous solutions using M-CTAB nanoparticles is obtained at pH 5. It can also be seen that the efficiency of As (III) removal decreases with increasing of pH. Preliminary biological test results show that M-CTAB nanoparticles do not induce morphological changes nor do they alter cell proliferation after 24 h of incubation. Our results suggest that M-CTAB nanoparticles could be used in new water treatment technology.
References:
1. Vlassopoulos, D.; Wood, S.A. Gold speciation in natural waters: I. Solubility and hydrolysis reactions of gold in aqueous solution. Geochim. Cosmochim. Acta 1990, 54, 3–12.
2. Demirer, G.S.; Okur, A.C.; Kizil, S. Synthesis and design of biologically inspired biocompatible iron oxide nanoparticles for biomedical applications. J. Mater. Chem. 2015, 3, 7831–7849.
3. Su, B.; Lin, J.; Owens, G.; Chen, Z. Impact of green synthesized iron oxide nanoparticles on the distribution and transformation of as species in contaminated soil. Environ. Pollut. 2020, 258, 113668.
4. Liu, B.; Liu, Z.; Wu, H.; Pan, S.; Cheng, X.; Sun, Y.; Xu, Y. Effective and simultaneous removal of organic/inorganic arsenic using polymer-based hydrated iron oxide adsorbent: Capacity evaluation and mechanism. Sci. Total Environ. 2020, 742, 140508.
5. Liu, Z.; Chen, J.; Wu, Y.; Li, Y.; Zhao, J.; Na, P. Synthesis of magnetic orderly mesoporous a-Fe2O3 nanocluster MIL-100 (Fe) for rapid and efficient arsenic (III, V) removal. J. Hazard. Mater. 2018, 343, 304–314.
Acknowledgement:
This work was supported by the Romanian Ministry of Research and Innovation through the project PN-III-P2-2.1-PED-2019-0868 contract no. 467PED ⁄ 2020.
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