Preparation, characterization, photoactivity and XPS studies of Ln2ZrTiO7 (Ln=Sm and Nd)
Source abstract
Abstract
Abstract Oxides of composition Ln 2 ZrTiO 7 (Ln = Sm and Nd) were prepared by sol–gel method and characterized by powder X-ray diffraction (XRD), energy dispersive spectra (EDS), Raman, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). These compounds were crystallized in the disordered pyrochlore structure in cubic lattice with F d 3 ¯ m space group. The TEM images of Sm 2 ZrTiO 7 and Nd 2 ZrTiO 7 prepared at 600 °C gave the particle size of 13 and 21 nm respectively. The photocatalytic activity of products was studied using photodegradation of methyl orange under UV light irradiation. The photocatalytic activity of these oxides was found to be less than that of La 2 Zr 2 O 7 and Nd 2 Zr 2 O 7 . The 3d profile of Nd 2 ZrTiO 7 gave satellite peaks on the low binding energy side in the XPS spectrum which were absent in the XPS spectrum of Sm 2 ZrTiO 7 . The reasons for the observation of satellite peaks were given.
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Research context
OpenAlex topics: Nuclear materials and radiation effects · Advanced Condensed Matter Physics · Radioactive element chemistry and processing
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References (45)
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