Synthesis and Characterization of CaFe(Si2O6)@SiO2@Na2Ti3O7 Core-Double Shell Magnetic
Main Article Content
Abstract
The title core-double shell magnetic materials, CaFe(Si2O6)@SiO2@titania, were successfully fabricated using CaFe(Si2O6) beads. The magnetic CaFe(Si2O6) core was covered by internal-shell silica thin films and external-shell titania nanoparticles. The coated silica shell on CaFe(Si2O6) beads was prepared by the sol-gel method using tetraethyl orthosilicate (TEOS) precursor. The external titania shell covered on CaFe(Si2O6)@SiO2 was prepared by hydrothermal processes at 180 °C for 48 hours using TiO2 particles and NaOH solution as precursors. The outer titania shell on CaFe(Si2O6)@SiO2 was made utilizing hydrothermal procedures at 180 °C for 48 hours, with TiO2 particles and NaOH solution as precursors. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), powder x-ray diffraction spectroscopy (XRD), and nitrogen adsorption-desorption apparatus were used to analyze the produced materials. The effects of NaOH concentration and TiO2 precursor quantity were studied. Titania nanorods were elongated as the NaOH concentration increased. When the dosage of TiO2 precursor was increased, the nanorod shape changed to the nanowire.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
R. O. Alves de Lima, A. P. Bazo, D. M. F. Salvadori, C. M. Rech, D. de Palma Oliveira, and G. de Aragão Umbuzeiro, “Mutagenic and carcinogenic potential of a textile azo dye processing plant effluent that impacts a drinking water source,” Mutat. Res. Toxicol. Environ. Mutagen., vol. 626, no. 1–2, pp. 53–60, Jan. 2007.
B. Lellis, C. Z. Fávaro-Polonio, J. A. Pamphile, and J. C. Polonio, “Effects of textile dyes on health and the environment and bioremediation potential of living organisms,” Biotechnol. Res. Innov., vol. 3, no. 2, pp. 275–290, Jul. 2019.
S. Kumar, Alka, Tarun, J. Saxena, C. Bansal, and P. Kumari, “Visible light-assisted photodegradation by silver tungstate-modified magnetite nanocomposite material for enhanced mineralization of organic water contaminants,” Appl. Nanosci., vol. 10, no. 5, pp. 1555–1569, May 2020.
W. M. M. Mahmoud, T. Rastogi, and K. Kümmerer, “Application of titanium dioxide nanoparticles as a photocatalyst for the removal of micropollutants such as pharmaceuticals from water,” Curr. Opin. Green Sustain. Chem., vol. 6, pp. 1–10, Aug. 2017.
H. Ahmari, S. Z. Heris, and M. H. Khayyat, “The effect of titanium dioxide nanoparticles and UV irradiation on photocatalytic degradation of Imidaclopride,” Environ. Technol., vol. 39, no. 4, pp. 536–547, Feb. 2018.
H. A. Kiwaan, T. M. Atwee, E. A. Azab, and A. A. El-Bindary, “Photocatalytic degradation of organic dyes in the presence of nanostructured titanium dioxide,” J. Mol. Struct., vol. 1200, p. 127115, Jan. 2020.
D. Dodoo-Arhin et al., “The effect of titanium dioxide synthesis technique and its photocatalytic degradation of organic dye pollutants,” Heliyon, vol. 4, no. 7, p. e00681, Jul. 2018.
T. A. Gad-Allah, S. Kato, S. Satokawa, and T. Kojima, “Role of Core Diameter and Silica Content in Photocatalytic Activity of TiO2/SiO2/Fe3O4 Composite.,” ChemInform, vol. 38, no. 47, Nov. 2007.
C. Wang, Y. Ao, P. Wang, J. Hou, and J. Qian, “A facile method for the preparation of titania-coated magnetic porous silica and its photocatalytic activity under UV or visible light,” Colloids Surfaces A Physicochem. Eng. Asp., vol. 360, no. 1–3, pp. 184–189, May 2010.
M. O. Ojemaye, O. O. Okoh, and A. I. Okoh, “Performance of NiFe2O4-SiO2-TiO2 Magnetic Photocatalyst for the Effective Photocatalytic Reduction of Cr(VI) in Aqueous Solutions,” J. Nanomater., vol. 2017, pp. 1–11, Jan 2017.
R. Xie et al., “Electrochemical oxidation of ofloxacin using a TiO2-based SnO2-Sb/polytetrafluoroethylene resin-PbO2 electrode: Reaction kinetics and mass transfer impact,” Appl. Catal. B Environ., vol. 203, pp. 515–525, Apr. 2017.
J. Wang, L. Peng, F. Cao, B. Su, and H. Shi, “A Fe3O4 -SiO2-TiO2 core-shell nanoparticle: Preparation and photocatalytic properties,” Inorg. Nano-Metal Chem., vol. 47, no. 3, pp. 396–400, Mar. 2017.
A. Uricchio, E. Nadal, B. Plujat, G. Plantard, F. Massines, and F. Fanelli, “Low-temperature atmospheric pressure plasma deposition of TiO2-based nanocomposite coatings on open-cell polymer foams for photocatalytic water treatment,” Appl. Surf. Sci., vol. 561, p. 150014, Sep. 2021.
M. Yang, D. Lu, H. Wang, P. Wu, and P. Fang, “A facile one-pot hydrothermal synthesis of two-dimensional TiO2-based nanosheets loaded with surface-enriched NixOy nanoparticles for efficient visible-light-driven photocatalysis,” Appl. Surf. Sci., vol. 467–468, pp. 124–134, Feb. 2019.
J. P. Cheng, R. Ma, M. Li, J. S. Wu, F. Liu, and X. B. Zhang, “Anatase nanocrystals coating on silica-coated magnetite: Role of polyacrylic acid treatment and its photocatalytic properties,” Chem. Eng. J., vol. 210, pp. 80–86, Nov. 2012.
Y. Chimupala and R. Drummond-Brydson, “Hydrothermal Synthesis and Phase Formation Mechanism of TiO2(B) Nanorods via Alkali Metal Titanate Phase Transformation,” Solid State Phenom., vol. 283, pp. 23–36, Sep. 2018.