Phase Transformation of Metastable ZnSnO3 Upon Thermal Decomposition by In-Situ Temperature-Dependent Raman Spectroscopy

被引：48

作者：

Bora, Tanujjal ^{[1
]}

Al-Hinai, Muna H. ^{[1
,2
]}

Al-Hinai, Ashraf T. ^{[3
]}

Dutta, Joydeep ^{[1
]}

机构：

[1] Sultan Qaboos Univ, Water Res Ctr, Chair Nanotechnol, Al Khoud 123, Oman

[2] Sultan Qaboos Univ, Coll Engn, Dept Petr & Chem Engn, Al Khoud 123, Oman

[3] Sultan Qaboos Univ, Coll Sci, Dept Chem, Al Khoud 123, Oman

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 12期

关键词：

ZINC STANNATE; SENSING PROPERTIES; ZN2SNO4; PRECIPITATION; PERFORMANCE; OXIDE;

D O I：

10.1111/jace.13791

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Temperature-dependent in-situ Raman spectroscopy is used to investigate the phase transformation of zinc metastannate (ZnSnO3) to zinc orthostannate (Zn2SnO4) induced upon annealing in the ambient. ZnSnO3 microcubes (MCs) were synthesized at room temperature using a simple aqueous synthesis process, followed by characterization using electron microscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). Annealing of the ZnSnO3 MCs was carried out up to 1000 degrees C, while recording the Raman spectra in-situ at regular intervals. Phase transformation from metastannate to orthostannate was found to begin around 500 degrees C with an activation energy of similar to 0.965 eV followed by the recrystallization into the inverse spinel orthostannate phase at similar to 750 degrees C. Results from this study provide detailed understanding of the phase transformation behavior of perovskite ZnSnO3 to inverse spinel Zn2SnO4 upon thermal annealing.

引用

页码：4044 / 4049

页数：6

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