P1.0.8 Zn2SnO4 : A Suitable Material for Liquid Petroleum Gas(LPG) Detection
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.0 Metal Oxide-based Sensors
- Author(s)
- G. Devi, H. Hamoon - Inorganic Chemistry Division Indian Institute of Chemical Technology (India)
- Pages
- 772 - 773
- DOI
- 10.5162/IMCS2012/P1.0.8
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
Semiconducting Zincstannate (Zn2SnO4, ZTO) having face – centred cubic spinel structure with band gap of (Eg =3.6eV) have been successfully synthesized by Sol-gel protocol. The effect of thermal treatment on the phase formation, microstructure and optical properties of Zincoxide-Tinoxide ceramics were investigated, starting powder of Zincoxide and Tinoxide were taken in the molar ratio of 2:1. The appearance of Zincstannate in the final product is demonstrated by X-Ray Diffraction, Energy Dispersive X-Ray analysis, Ultraviolet-visible and Raman spectral characterizations.The XRD pattern show that the highly – crystalline Zincstannate (ZTO) nanostructures could be formed in a well dispersed manner for 1000°C sample at a crystallite size of 29 nm. The Raman data confirmed presence of three different Zincoxide, Tinoxide and Zincstannate phases at 700°C. Whereas at 1000°C a sharp Raman shift can be seen at 669 cm-1 corresponding Zincstannate vibration modes. Furthermore, Gas sensing characteristics towards Liquid petroleum gas (LPG) was tested. The sensor demonstrated excellent Sensitivity and Selectivity towards 1000ppm of Liquid petroleum gas.