ZINC STANNATE

Zinc stannate, covering ZnSnO3 and Zn2SnO4 and commonly called zinc tin oxide (ZTO), is a class of ternary oxides with high electron mobility, high electrical conductivity, attractive optical properties and greater stability than its binary counterparts such as ZnO and SnO2[1][2][3]. ZTO serves as a sensing element: ethanol and other reductive gases react with oxygen species adsorbed on its surface, raising the resistance, and porous zinc stannate structures have been applied to gas sensing[2][3].
ZnSnO3 is used as a catalyst in organic synthesis, fuel cells and photocatalysis, while Zn2SnO4 serves as a photocatalyst for dye photodegradation, photocatalytic H2 generation, CO2 photoreduction and photocatalytic removal of gaseous pollutants[2].

Not classified

Zinc stannate compounds are prepared by solid-state reaction of ZnO and SnO2 in stoichiometric molar ratios (2:1 for Zn2SnO4, 1:1 for ZnSnO3), with SnO2 supplied either as a chemical precursor or as naturally occurring cassiterite mineral, and calcination up to 1100 °C; during crystallization the metastable ZnSnO3 formed at 300–500 °C converts into the stable Zn2SnO4 above 600 °C[1]. Zn2SnO4 nanoparticles are also obtained by one-step mechanochemical processing, in which ZnO and SnO2 precursors in a 2:1 molar ratio are milled and calcined at 1100 °C for 24 h and sintered at 1100 °C[1].

[1]Ibrahim, D., Mahani, R., Shaaban, M., Maghraby, M. E., Mahmoud, N., & Gaber, A. (2025). Synthesis of zinc stannate compounds utilizing natural cassiterite mineral. Ceramics International, 51(6), 7728–7741. https://doi.org/10.1016/j.ceramint.2024.12.211
[2]Sun, S., & Liang, S. (2017). Morphological zinc stannate: synthesis, fundamental properties and applications. Journal of Materials Chemistry A, 5(39), 20534–20560. https://doi.org/10.1039/c7ta06221d
[3]Baruah, S., & Dutta, J. (2011). Zinc stannate nanostructures: hydrothermal synthesis. Science and Technology of Advanced Materials, 12(1), 013004. https://doi.org/10.1088/1468-6996/12/1/013004