Synthesis, Characterization and Sensing Behavior of WO₃ Nanocrystalline Powder for Toluene Vapor

• Authors: F. Boran , S. Çetinkaya
• Languages of publication: EN

Abstracts

EN

Tungsten oxide (WO₃) nanocrystalline powder was successfully synthesized by direct precipitation technique starting from sodium tungstate dehydrate (Na₂WO₄·2H₂O) as precursor at 80°C for 48 h. The morphological characteristics, distribution, and crystallite size of WO₃ nanocrystalline powder were analysed by transmission electron microscopy, X-ray diffraction, and the Fourier transform infrared spectroscopy. According to transmission electron microscopy results, the mean particle size of WO₃ nanocrystalline powder was approximately determined as 41.7 nm. The gas sensing performance of WO₃ nanocrystalline powder for saturated toluene vapor was measured by two probe resistivity unit in a closed vessel at room temperature. In addition, WO₃ nanocrystalline powder was able to respond the lowest concentration of 500 ppm. The results showed that the sample exhibited high sensitivity (93%) and good response reproducibility (0.93+5.5%) for toluene vapor.

Keywords

EN

tungsten oxide; direct precipitation technique; toluene

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 3
• Pages: 572-573

Dates

published

2017-09

Contributors

author

F. Boran

• Hitit University, Chemical Engineering Department, Çorum, Turkey

author

S. Çetinkaya

• Cumhuriyet University, Chemical Engineering Department, Sivas, Turkey

References

• [1] L. Wang, T. Zhou, R. Zhang, Z. Lou, J. Deng, T. Zhang, Sens. Actuat. B 227, 448 (2016), doi: 10.1016/j.snb.2015.12.097
• [2] J. Li, L. Wang, H. Liu, J. Zhao, X. Li, H. Wei, Y. Han, J. Alloys Comp. 694, 939 (2017), doi: 10.1016/j.jallcom.2016.10.142
• [3] S. Ge, H. Zheng, Y. Sun, Z. Jin, J. Shan, C. Wang, H. Wu, M. Li, F. Meng, J. Alloys Comp. 659, 127 (2016), doi: 10.1016/j.jallcom.2015.11.046
• [4] W. Laslounia, Z. Hamlatia, M. Azzaz, Acta. Phys. Pol. A 128, B-190 (2015), doi: 10.12693/APhysPolA.128.B-190
• [5] X. Su, Y. Li, J. Jian, J. Wang, Mater. Res. Bull. 45, 1960 (2010), doi: 10.1016/j.materresbull.2010.08.011
• [6] X.C. Song, Y.F. Zheng, E. Yang, Y. Wang, Mater. Lett. 61, 3904 (2007), doi: 10.1016/j.matlet.2006.12.055
• [7] S.B. Kondawar, S.P. Agrawal, S.H. Nimkar, H.J. Sharm, P.T. Patil, Adv. Mater. Lett. 3, 393 (2012), doi: 10.5185/amlett.2012.6361
• [8] A. Boudiba, C. Zhang, C. Snyders, M.G. Olivier, M. Debliquy, Proced. Eng. 25, 264 (2011), doi: 10.1016/j.proeng.2011.12.065
• [9] Y. Lin, L. Huang, L. Chen, J. Zhang, L. Shen, Q. Chen, W. Shi, Sens. Actuat. B Chem. 216, 176 (2015), doi: 10.1016/j.snb.2015.04.045

Identifiers

DOI

10.12693/APhysPolA.132.572