Data for: Synthesis, a structural and thermoanalytical study of Ca1-xSrxMoO4 ceramic

Published: 6 November 2019| Version 1 | DOI: 10.17632/x9s6h3sdn2.1
Contributor:
Arturas Zalga

Description

Nano- and micro-sized Ca1-xSrxMoO4 (x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0) ceramics have been successfully synthesized by an aqueous sol-gel synthesis method in the sol-gel process using tartaric acid as a ligand. In order to show the possible pathways of chemical reactions during the sol-gel processing and its influence under the heat-treatment at high-temperature, the thermal analysis as a powerful analytical technique was applied. The mechanism of thermal decomposition of both the tartaric acid and metal tartrates between all multicomponent Ca1-xSrxMoO4 samples was established and qualitatively compared. Moreover, in support of data from the TGA/DSC curves the quantitative distribution of intermediate products in the gel precursors during the heat-treatment was also estimated. In addition, theoretically determined data of the carbon residues were compared with the corresponding mass change from the TGA curve as a match by suggested reaction mechanism. By combining thermoanalytical investigation with the X-ray diffraction of samples heat-treated at a different temperature the relation of a final composition and its crystallite size with the thermal decomposition process of volatile components was estimated. Scanning electron microscopy was used for both the characterization of surface morphology and estimation of the particle size in the ceramic. FT-IR spectroscopy was applied in order to estimate the possible differences between multicomponent Ca1-xSrxMoO4 systems taking into account the size of crystallites and the nature of surface morphology. Finally, the Raman spectroscopic technique confirmed the initial composition of the elements in the synthesized ceramic and clearly showed that the distribution of both calcium and strontium atoms corresponds to the product, which is composed of a single-phase crystalline compound.

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Categories

Raman Spectroscopy, Infrared Spectroscopy, Thermal Analysis, Scanning Electron Microscopy, X-Ray Diffraction, Sol-Gel, Rietveld Refinement

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