Seminars

Sonocatalyzed Ammonothermal Synthesis of Barium Zirconate Fine Powders

by Suttipong Wannapaiboon, Suranaree University of Technology, Thailand

Europe/Berlin
Bldg. 47c/L110

Bldg. 47c/L110

Description
The technique as-called sonocatalyzed ammonothermal technique was developed for the preparation of barium zirconate (BZ) fine powders. The influences of ultrasonication, ammonothermal synthetic parameters and BaII:ZrIV mole ratios on the synthesized powders were investigated. The prior ultrasonication played an important role in reducing the ammonothermal reaction times providing the phase-pure BZ powders. The evolution of the particle morphologies with the rising temperature and the growth of the particle with prolonged reaction time were apparent. The increasing of BaII:ZrIV mole ratio discernibly reduced the average particle sizes of the composing particles. The nanoparticles of BZ with an average size of ca. 22 nm could be yielded from the reaction using the BaII:ZrIV mole ratio of 1.5:1.0, conducted at 150oC for 12 h.