Effect of Zn:Al Ratio and Calcination Time on Structural Properties of Zn-Al-O Compound

Wanichaya Mekprasart; Suchada Worasawat; Thanit Tangcharoen; Wisanu Pecharapa

doi:10.4028/www.scientific.net/KEM.675-676.535

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 675-676Effect of Zn:Al Ratio and Calcination Time on...

Effect of Zn:Al Ratio and Calcination Time on Structural Properties of Zn-Al-O Compound

Abstract:

Zn-Al-O compounds were successfully synthesized via co-precipitation method at pH 8 followed by calcination process at 900 oC. Influence of different precursor (Zn:Al) ratio and calcination period on their structural properties and formation have been investigated. Varying Zn:Al ratio was conducted at 2:1, 1:1, 1:2 and 1:4 with different calcination time at 0, 2, 4, and 6 h. Phase transformation and morphologies were characterized by X-ray diffraction and field-emission scanning electron microscope. Moreover, chemical bonding of Zn-Al-O compound was analyzed by Raman spectroscopy. The results indicated that chemical bonding between Zn-Al oxide evidentially occurred in all samples in composite form and spinel structure. In addition, the amount of Al content considerably contributes to significant aggregation in zinc aluminate (ZnAl₂O₄) spinel crystalline phase affirmed by XRD result. Meanwhile, SEM images reveal high crystallinity and strong formation of the compound obtained by prolong calcined period.

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Key Engineering Materials (Volumes 675-676)

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535-538

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https://doi.org/10.4028/www.scientific.net/KEM.675-676.535

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Online since:

January 2016

Authors:

Wanichaya Mekprasart*, Suchada Worasawat, Thanit Tangcharoen, Wisanu Pecharapa

Keywords:

Calcination Period, Structural Properties, Zn:Al Ratio, Zn-Al-O Compound

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