Growth of SnS nanoparticles and its ability as ethanol gas sensor
- 23 Downloads
SnS nanoparticles are grown by chemical route using tetrahydrofuran as medium. Sodium borohydride acts as reducing agent. The growth time is varied from 3 to 14 h at room temperature. The crystallite size increases with increase of growth time. The band gap is maximum for 3 h grown sample and decreases for samples grown for longer time. Photoluminescence spectra show possible defect states. Energy dispersive X-ray analysis shows that stoichiometry is well maintained for sample grown for 7 h. The films of SnS are deposited on glass from the dispersed medium. Atomic force microscopy analysis shows that roughness is small for lower growth time sample. The gas sensing in ethanol are carried out for different growth time films. The sensitivity is maximum for optimum growth time sample i.e. for the sample grown for 7 h. The chain like structure and good stochiometry of the SnS nanoparticles increases the sensitivity of ethanol gas sensing. Rapid response and recovery times of these sensors are observed for samples especially for 7 h grown sample at 250 °C.
We are thankful to University Grant Commission (UGC) and Department of Science and Technology (DST) for their constant support for providing various instrumental facilities to Physics and Technophysics Department of Vidyasagar University.
- 7.F.W. Lee, C.W. Ma, Y.H. Lin, P.C. Huang, Y.L. Su, Y.J. Yang, A micromachined photo-supercapacitor integrated with CdS-sensitized solar cells and buckypaper. Sens. Mater. 28, 7 (2016)Google Scholar
- 12.A.R. Gardeshzadeh, B. Raissi, E. Marzbanrad, H. Mohebbi, Fabrication of resistive CO gas sensor based on SnO2 nanopowders via low frequency AC electrophoretic deposition. J. Mater. Sci.: Mater. Electron. 20, 127–131 (2009)Google Scholar
- 25.S.P. Wang, C.H. Wu, C.C. Hong, MoS2 nanosensors fabricated by dielectrophoretic assembly for ultrasensitive and rapid sensing of volatile organic compounds. Sensors 2015, 1–4 (2015)Google Scholar
- 27.A. Muthuvinayagam, B. Viswanathan, Hydrothermal synthesis and LPG sensing ability of SnS nanomaterial. Indian J. Chem. Sect. A 54, 155–160 (2015)Google Scholar
- 42.A. Gaiardo, P. Bellutti, S. Gherardi, G. Zonta, B. Fabbri, A. Giberti, V. Guidi, C. Malagu, Tin(IV) sulfide chemoresistivity: a possible new gas sensing material, XVIII AISEM Annual Conference 978-1-4799-8591-3 (2015)Google Scholar
- 43.H. Karami, S. Babaei, Application of tin sulfide-tin dioxide nanocomposite as oxygen gas-sensing agent. Int. J. Electrochem. Sci. 8, 12078–12087 (2013)Google Scholar