Grafting of silver particles on FeTiO 3 /TiO 2 /Ag: synthesis and characterization of FeTiO 3 /TiO 2 nanoparticles in pr
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Grafting of silver particles on FeTiO3/TiO2/Ag: synthesis and characterization of FeTiO3/TiO2 nanoparticles in presence of CTAB and their application as photocatalyst Ali Abbasi1 · Mazyar Ahmadi Golsefidi2 Received: 6 February 2018 / Accepted: 17 April 2018 © Springer Science+Business Media, LLC, part of Springer Nature 2018
Abstract An effective procedure to synthesize of the FeTiO3/TiO2/Ag nanocomposites by a combination of sol–gel and photodeposition methods was introduced. The as prepared products were characterized using XRD, SEM, VSM, EDS, DRS, TEM, ICP-OES and IR techniques. The dimensions of catalyst particle size were evaluated by scanning electron microscopy and transmission electron microscopy. Results approved that the final product has nanoscale diameter. On the other hand, studding of magnetic nature by VSM analysis showed superparamagnetic properties for the nanocomposite. XRD pattern indicates that FeTiO3/TiO2 was synthesized at 600 °C. The cationic surfactant was used during sol–gel synthesis of FeTiO3/TiO2 sample in order to modify the microstructure of the gels. The as synthesized photocatalyst showed good photocatalytic performance in decolorization of various dye aqueous solution. Rhodamine B, methylene blue and methyl orange were used as pollutant model. Results indicated that the maximum photocatalytic activity of the FeTiO3/TiO2/Ag nanocomposite was obtained for rhodamine B pollutant under visible light. It was observed that by using of F eTiO3/TiO2/Ag nanostructure instead FeTiO3/ TiO2 nanoparticles the photocatalytic activity for methylene blue from 82 to 89 increased. Also by decreasing of pH from 9 to 5 destruction percentage of methyl orange was increased from 65 to 85.
1 Introduction FeTiO3 is an antiferromagnetic semiconductor with a Curie temperature of 1000 K [1, 2]. FeTiO3 (Natural ilmenite) is an iron and titana mineral originally formed in magma, although natural ilmenite contains a large amount of hematite (Fe2O3). The structure of FeTiO3 is similar to hematite, where the two F e3+ ions atoms in the (001) planes are replaced by Ti atoms. F eTiO3 is one of the most common materials in the earth which due to unique antiferromagnetic property and suitable band gap of 2.5–2.9 eV [3, 4]; FeTiO3 has potential applications to optoelectronic and electromagnetic devices. Ilmenite has potential applications in * Ali Abbasi [email protected] * Mazyar Ahmadi Golsefidi [email protected] 1
Young Researchers and Elite Club, Gorgan Branch, Islamic Azad University, Gorgan, Iran
Department of Chemistry, Faculty of Sciences, Gorgan Branch, Islamic Azad University, Gorgan, Iran
2
high temperature integrated circuits, chemical catalysts, high power electronic devices and photocatalysts [5–8]. FeTiO3 nanoparticles can be prepared by various methods such as; solid–state reaction [9, 10], hydrothermal [11, 12], mechanochemical milling [13] and sol–gel approach. Sol–gel process is one of the most successful techniques for the production of nanosize cerami
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