Preparation and Photocatalytic Activity of (Fe2.5Ti0.5)1.04O4/Ti4O7 Nanocomposites

• Published in: Russian Journal of Physical Chemistry A Vol. 96; no. 6; pp. 1356 - 1362
• Main Authors: Benkun, Wang, Huijun, Xu, Zhihao, Yu, Baoliang, Liu, Boxiang, Mei, Jun, Fei, Qingyang, Du
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.06.2022; Springer Nature B.V
• Subjects: Catalytic activity; Chemistry; Chemistry and Materials Science; Free radicals; Nanocomposites; Natural lighting; Photocatalysis; Photochemistry and Magnetochemistry; Photoelectrons; Physical Chemistry; Pollutants; Rhodamine; Sodium persulfate; Titanium compounds; Wastewater; X ray photoelectron spectroscopy; Xenon lamps; Zeta potential; polluted water treatment; sodium persulfate; Ti; ); photocatalysis; Fe; O
• ISSN: 0036-0244; 1531-863X
• DOI: 10.1134/S0036024422060292

Due to the increased effect of pollutants in wastewater on the environment, demand for methods to mitigate this has increased in recent years. One such method uses nanocomposites and the effectiveness of examples based on iron-titanium compounds is studied here. The (Fe 2.5 Ti 0.5 ) 1.04 O 4 /Ti 4 O 7 (FTO) nanocomposites were prepared using a hydrothermal synthesis method and three different concentrations of NaOH. The nanocomposites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), EDX mapping, FT-IR, and Zeta potential. The sodium persulfate (Ps) was activated by irradiation with a xenon lamp which was used to simulate natural light. At an FTO concentration of 2.5 g/L, FTO : Ps = 1 : 10, and with the solution’s pH 3, the rate at which the activated Ps degraded the water pollutant Rhodamine B (RhB) was optimized, and reached 93.17% in 90 min, and 98.12% in 120 min. The FTO provided additional h + and e – for the photocatalysis of Ps, which promoted it to produce , and especially , which is the key free radical for the degradation of RhB in the FTO-Ps system.