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Development of ZnO/Ag Nanocomposite Film for Gas Sensing Application
Corresponding Author(s) : Sheela Singh
Asian Journal of Chemistry,
Vol. 29 No. 9 (2017): Vol 29 Issue 9
Abstract
The sol-gel technique was used to prepare zinc oxide nanoparticles doped with silver ions. The sample phase and microstructure were characterized by different techniques such as X-ray diffraction, field emission scanning electron microscopy, also absorption and metal composition were finding by UV-visible spectra, EDAX, respectively. In this paper, we tried with ZnO/Ag nanocomposite with pH 9 and varying the composition of silver ions. X-ray diffraction study showed that increasing in intensity of silver with the silver concentration, which indicates the formation of ZnO/Ag composite. The prepared sample maintains the good morphology and microstructure of pure ZnO. Sensing results showing that ZnO/Ag nanocomposite shows better sensing properties. 5 wt % AgNO3 and 0.5 g of ZnO with adding 1 mol NaBH4 in 5 mL of ZnO/Ag composite (pH 9) were giving better sensing output. The fabricated device showed that high sensor response of 72 % at 1000 ppm and the low detection limit is 5 ppm.
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References
X. Wang, M. Zhao, F. Liu, J. Jia, X. Li and L. Cao, Ceramic Int. J., 39, 2883 (2013); https://doi.org/10.1016/j.ceramint.2012.09.062.
L. Zhang, J. Zhao, J. Zheng, L. Li and Z. Zhu, Sens. Actuators B Chem., 158, 144 (2011); https://doi.org/10.1016/j.snb.2011.05.057.
Y.F. Sun, S.B. Liu, F.L. Meng, J.-Y. Liu, Z. Jin, L.-T. Kong and J.-H. Liu, Sensors, 12, 2610 (2012); https://doi.org/10.3390/s120302610.
K. Wetchakun, T. Samerjai, N. Tamaekong, C. Liewhiran, C. Siriwong, V. Kruefu, A. Wisitsoraat, A. Tuantranont and S. Phanichphant, Sens. Actuators B Chem., 160, 580 (2011); https://doi.org/10.1016/j.snb.2011.08.032.
T. Samerjai, N. Tamaekong, K. Wetchakun, V. Kruefu, C. Liewhiran, C. Siriwong, A. Wisitsoraat and S. Phanichphat, Sens. Actuators B Chem., 171-172, 43 (2012); https://doi.org/10.1016/j.snb.2012.05.052.
A.S.M.I. Uddin and G.-S. Chung, Sens. Actuators B Chem., 205, 338 (2014); https://doi.org/10.1016/j.snb.2014.09.005.
N.L. Tarwal, A.V. Rajgure, J.Y. Patil, M.S. Khandekar, S.S. Suryavanshi, P.S. Patil, M.G. Gang, J.H. Kim and J.H. Jang, J. Mater. Sci., 48, 7274 (2013); https://doi.org/10.1007/s10853-013-7547-7.
S.C. Navale, V. Ravi, I.S. Mulla, S.W. Gosavi and S.K. Kulkarni, Sens. Actuators B Chem., 126, 382 (2007); https://doi.org/10.1016/j.snb.2007.03.019.
J. Zhang, S. Wang, M. Xu, Y. Wang, B. Zhu, S. Zhang, W. Huang and S. Wu, Cryst. Growth Des., 9, 3532 (2009); https://doi.org/10.1021/cg900269a.
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