Synthesis of Tin Tellurium Oxide Nanoparticles Via Sol-Gel With Modification of Different Parameters

Lee, Ching Yik (2019) Synthesis of Tin Tellurium Oxide Nanoparticles Via Sol-Gel With Modification of Different Parameters. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The objectives of this present study are to synthesize SnO2, TeO2 and SnTeO2 nanoparticles using sol-gel method. Tin oxide nanoparticles and tellurium oxide nanoparticles are metal oxide nanoparticles which attracted much attention due to the influential properties when size and shape are reduced down to nanometer scale. This thesis also deals with investigating the properties of SnO2, TeO2 and SnTeO2 nanoparticles using FT-IR, TGA, PL and SEM analyses. The tin oxide nanoparticles were synthesized through calcination at 200 °C, 300 °C, 400 °C, 500 °C and 600 °C for 3 hours. The tellurium oxide nanoparticles and tin tellurium nanoparticles were synthesized through calcination at 700 °C and 750 °C, respectively. The formation of each SnO2, TeO2 and SnTeO2 nanoparticles was determined by FT-IR spectroscopy. TGA plots were recorded for the determination of thermal stability. The optical properties were studied by PL spectroscopy from photoluminescence emission. The morphological analysis was carried out by SEM on tin oxide nanoparticles synthesized through calcination at 200 °C. SnO2, TeO2 and SnTeO2 were shown to present by FTIR. The highest thermal stability for SnO2 nanoparticles was the sample being synthesized at the lowest temperature. For SnO2, TeO2 and SnTeO2 nanoparticles, they possess negative photoluminescence property.