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Thermal Conductivity of Nickel Oxide Nanoparticles Synthesized by Combustion Method

  • Pranati Sahoo (a1), Dinesh Misra (a2), Girija Shankar Chaubey (a3), James Salvador (a4), Nathan J. Takas (a5) and Pierre F. P. Poudeu (a6)...


Monodispersed nickel oxide nanoparticles have been synthesized using solution combustion synthesis method. Size of the nanoparticles was controlled by varying different reaction parameters such as reaction temperature and reaction time. Structure and morphology of the nanoparticles were investigated using X-ray diffraction and transmission electron microscopy. BET surface area of 99.7 m2/g was obtained for the nanoparticles synthesized at 300 °C. A decrease in surface area was observed with increase in reaction temperature. The nanoparticles were compacted using spark plasma sintering technique at 950 °C and thermal conductivity was studied on compacted sample. Significant decrease in thermal conductivity was observed for nanoparticles in compared to their bulk counter-part.



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