Mechanism of Macroporous Zirconia Particles Formation Prepared by Hydrothermal Synthesis

Abstract:

The purpose of this work was to investigate the mechanism of macroporous zirconia particles formation by hydrothermal synthesis. Hydrothermal synthesis of zirconia was prepared from precursor solution of Zr(NO₃)₂ with a concentration of 0.3 M at temperatures of 300 and 200°C carried out in a batch and a continuous reactor, respectively. Hydrothermally synthesized colloid subsequently was mixed with polystyrene template to form macroporous zirconia particles, and then was synthesized hydrothermally for 1 hour at temperature of 150°C and 200°C. Once the synthesis was complete, the particles were then dried at temperature of 60°C for 6 hours. In order to eliminate polystyrene template from the particles, the dried particles were calcined at temperature of 600°C and 900°C for 6 hours. The morphology of particles formed were characterized by scanning electron microscope (SEM) and Particle Size Analyzer (PSA). The analytical result showed that macroporous particles were formed at all experimental condition, and the mechanism of macroporous particles formation could be observed clearly. Based on the XRD analysis, the crystal zirconia consisted of monoclinic and tetragonal phase.

• Periodical: Advanced Materials Research (Volume 1112)
• Pages: 538-541
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.538
• Online since: July 2015
• Authors: Siti Machmudah*, Okky Putri Prastuti, Widiyastuti Widiyastuti, Sugeng Winardi, Wahyudiono Wahyudiono, Hideki Kanda, Motonobu Goto
• Keywords: Hydrothermal, Macroporous Particles, Polystyrene, Template, Zirconia

References

[1] J. Hiromichi, Hydrothermal Synthesis of Yttria Stabilized ZrO2 Nanoparticles in Subcritical and Supercritical Water Using a Flow Reaction System, J. Solid State Chem. 45 (2009) 2985-2990.

DOI: 10.1016/j.jssc.2009.08.013

[2] U.K.H. Bangi, C. -S. Park, S. Baek, H. -H. Park, Sol–gel synthesis of high surface area nanostructured zirconia powder by surface chemical modification, Powder Technology 239 (2013) 314–318.

DOI: 10.1016/j.powtec.2013.02.014

[3] A. Behbahani, Hydrothermal Synthesis of Zirconia Nanoparticles from Commercial Zirconia, Procedia Eng. 42 (2012) 908-917.

DOI: 10.1016/j.proeng.2012.07.483

[4] V. Valtchev, Preparation of regular macroporous structures built of intergrown silicalite-1 nanocrystals, J. Mater. Chem. 12 (2002) 1914–(1918).

DOI: 10.1039/b110582p