A unique and facile preparation of lanthanum ferrite nanoparticles in emulsion nanoreactors: Morphology,structure, and efficient photocatalysis |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418, Iran;2. Department of Chemistry, Payame Noor University, 19395-14697 Tehran, Iran;1. University Department of Physics, Ranchi University, Ranchi 834008, India;2. Institute Instrumentation Centre, Indian Institute of Technology, Roorkee 247667, India;1. Laboratory of Eco-Materials and Sustainable Technology, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;2. Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;1. School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 Thailand;2. Integrated Nanotechnology Research Center, Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;3. NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials, Suranaree University of Technology, NakhonRatchasima 30000, Thailand;1. Laboratório Interdisciplinar em Cerâmica (LIEC), Departamento de Físico-Química, Instituto de Química, UNESP, CEP 14800-900 Araraquara, SP, Brazil;2. Universidade Estadual Paulista, Unesp, Faculdade de Engenharia de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 333, Bairro Pedregulho, CEP 12516-410 Guaratinguetá, SP, Brazil |
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| Abstract: | Lanthanum ferrite nanoparticles (LaFeO3 NPs) with light absorption properties in the visible region were successfully synthesized in CTAB (cetyltrimethyl ammonium bromide) emulsion nanoreactors at room temperature. The morphology, size, structure, elemental composition, and optical properties of these particles were characterized by field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), X-ray fluorescence (XRF), and ultraviolet–visible absorption (UV–Vis) spectroscopy. Through this method, highly crystalline and well-dispersed perovskite LaFeO3 NPs with a phase-pure were successfully obtained. The band gap energy (Eg) of the LaFeO3 NPs was calculated by UV-Vis spectroscopy at the wavelength of about 517 nm and is observed to have a value of 2.43 eV. The photocatalytic activities of LaFeO3 NPs were evaluated by the degradation of toluidine blue O (TBO, used as a probe) dye under visible light irradiation, which exhibits a high photocatalytic TBO dye degradation activity as compared to the commercial P-25 titania powder. This phenomenon is due to smaller band gap energy and changing from bulk to nanostructure. The higher photocatalytic activity is also related to the photo absorption. |
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| Keywords: | Emulsion nanoreactors Room-temperature synthesis Lanthanum ferrite nanoparticles Semiconductor photocatalyst Optical properties Visible light |
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