The effect of tin precursors on the formation of Zr0.8Sn0.2TiO4 nano-powder by sol gel process
Source abstract
Abstract
Different precursors can have different effects upon the properties of materials. In this paper, two different tin precursors, i.e., tin (IV) chloride pentahydrate (SnCl4·5H2O) and tin (IV) t-butoxide (Sn(OC4H9)4) have been used to prepare Zr0.8Sn0.2TiO4 powders. The dry gel and powder were characterized by Simultaneous DTA/TGA analysis (SDT), X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Accelerated surface area and porosimetry analyzer (ASAP). The results show less weight loss for dry gel from precursor SnCl4·5H2O than that of Sn(OC4H9)4. The onset of polycrystalline ZST nano powders occurred at 450 °C from precursor SnCl4·5H2O which is 50 °C lower than that of Sn(OC4H9)4. Even though the powders from SnCl4·5H2O had a specific surface area of 30.4 m2/g which is higher than that of 28.7 m2/g from Sn(OC4H9)4. The crystallite size of ZST powders were about the same around 15 nm. This may be due to the powders are more aggregated in Sn(OC4H9)4 system. Two major mechanisms are proposed for above differences in morphology and the formation of powders.
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Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Advanced ceramic materials synthesis
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