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Effect of heat treatment on thermal diffusivity of Zn/Al layered double hydroxide synthesized using photoflash technique

G. MARYAM RANJBAR1, KAMYAR SHAMELI2,* , MAHMOOD MAT YUNUS1, MOHD ZOBIR BIN HUSSEIN2, KAVEH SHAMELI3

Affiliation

  1. Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 Selangor, Malaysia
  2. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Selangor, Malaysia
  3. Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia

Abstract

Thermal diffusivity of zinc-aluminum layered double hydroxides was synthesized at different molar ratio of zinc and aluminum salts in the pH=7 and measured by using polyvinlidene diflouride (PVDF) by photoflash technique. The samples were prepared using Zn(NO3)2 and Al(NO3)3 solutions by drop wise addition of NaOH solution with vigorous stirring under nitrogen atmosphere. The samples then heat treated by control an electrical furnace from 200 to 600 °C for 5 hours. Thermal diffusivity was increased for all samples after sintering. The samples were studied by powder x-ray diffraction method, Fourier transform infrared (FTIR), scanning electron microscope (SEM) and thermal diffusivity. Our results indicate the very different role of sintering in the structure and thermal diffusivity of samples..

Keywords

Thermal diffusivity, Zn/Al Layered Double Hydroxide, Photoflash, Polyvinlidene diflouride, Heat treatment.

Citation

G. MARYAM RANJBAR, KAMYAR SHAMELI, MAHMOOD MAT YUNUS, MOHD ZOBIR BIN HUSSEIN, KAVEH SHAMELI, Effect of heat treatment on thermal diffusivity of Zn/Al layered double hydroxide synthesized using photoflash technique, Optoelectronics and Advanced Materials - Rapid Communications, 8, 5-6, May-June 2014, pp.457-461 (2014).

Submitted at: Nov. 3, 2013

Accepted at: May 15, 2014