SOLUTION COMBUSTION SYNTHESIS OF CaZrO₃ USING MIXED FUEL

Abstract

With the advent of nanotechnology, methods of synthesis have attained immense importance since it governs particle size of the materials. In this paper, we report synthesis of CaZrO 3 by simple and energy efficient method that produced ultra fine powder having particle size in the nanometers. Synthesis of CaZrO 3 was carried out using corresponding metal nitrates and mixed fuels i.e., glycine and urea at a temperature less than 500°C. The reaction was highly exothermic in nature. The product obtained was voluminous and foamy. The as synthesized CaZrO 3 is crystalline in nature. It required no further heating. The compound was indexed using standard indexing procedure and the lattice constants matches completely with those reported in the literature. Differential Thermal Analysis (DTA) and Thermo Gravimetric Analysis (TGA) results shows that the material is highly stable internally during the whole range of temperature studied i.e., up to 1000°C. The powder density of the material was calculated to be 5.6393 g cm -1. BET surface area was found to be 11.505 m 2/ g . The particle size was calculated using density and BET surface area values. The particle size of the as synthesized CaZrO 3 was found to be 92 nm. The product was further characterized using Scanning Electron Microscope and electrical conductivity.