Browse > Article
http://dx.doi.org/10.5012/bkcs.2011.32.6.1865

Characteristics of a Metal-loaded SnO2/WO3 Thick Film Gas Sensor for Detecting Acetaldehyde Gas  

Jun, Jae-Mok (Department of Chemistry, Keimyung University)
Park, Young-Ho (Department of Pharmaceutical Engineering, International University of Korea)
Lee, Chang-Seop (Department of Chemistry, Keimyung University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.6, 2011 , pp. 1865-1872 More about this Journal
Abstract
This study investigates the sensitivity of a gas sensor to volatile organic compounds (VOCs) at various operating temperatures and catalysts. Nano-sized powdered $WO_3$ prepared by sol-gel and chemical precipitation methods was mixed with various metal oxides. Next, transition metals (Pt, Ru, Pd, and In) were doped on the surface of the mixture. Metal-$WO_3$ thick films were prepared using the screen-printing method. The physical and chemical properties of the films were studied by SEM/EDS, XRD, and BET techniques. The measured sensitivity to VOCs is defined as the ratio ($R_a/R_g$) of resistance ($R_{air}$) of $WO_3$ film in the air to resistance ($R_{gas}$) of $WO_3$ film in a VOCs test gas. The sensitivity and selectivity of the films were tested with various VOCs such as acetaldehyde, formaldehyde, methyl alcohol, and BTEX. The thick $WO_3$ film containing 1 wt % of Ru and 5 wt % of $SnO_2$ showed the best sensitivity and selectivity to acetaldehyde gas at an operating temperature of 300 $^{\circ}C$.
Keywords
$WO_3$ gas sensor; Sol-gel; VOCs; Acetaldehyde; Thick film; Screen-printing;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Wu, R.-J.; Chang, W.-C.; Tsai, K.-M.; Wu, J.-G. Sens. Actuators B: Chem. 2009, 138, 35.   DOI   ScienceOn
2 Jakubik, W. P. Thin Solid Films 2009, 517, 6188.   DOI   ScienceOn
3 Solntsev, V. S.; Gorvanyuk, T. I.; Litovchenko, V. G.; Evtukh, A. A. Thin Solid Films 2009, 517, 6202.   DOI   ScienceOn
4 Shaver, P. Appl. Phys. Lett. 1967, 11, 255.   DOI
5 Nishio, K.; Sei, T.; Tsuchiya, T. J. Ceram. Soc. Jpn. 1999, 107, 199.   DOI
6 Klejnot, O. J. Inorg. Chem. 1965, 4, 1668.   DOI
7 Hocker, H.; Jones, F. R. Macromol. Chem. 1972, 161, 251.   DOI
8 Min, B. K.; Oh, S. D. Kor. J. Ceram. 1999, 5(2), 125.
9 Lim, C. H.; Oh, S. J. Sensors and Actuators B 1996, 30, 223.   DOI   ScienceOn
10 Yoo, D. J.; Tamaki, J.; Miura, N.; Yamajoe, N.; Park, S. J. Korean Journal of Materials Research 1996, 6(7), 716.   과학기술학회마을
11 Kawahara, A.; Katsuki, H.; Egashira, M. Sensors and Actuators B 1998, 49, 273.   DOI   ScienceOn
12 Khadayate, R. S.; Sali, J. V.; Patil, P. P. Talanta 2007, 72, 1077.   DOI   ScienceOn
13 Dean, J. A. Lange's Handbook of Chemistry, 13th ed.; McGraw Hill: New York, U.S.A. 1985; p 10.
14 Xu, C.; Kurokawa, J.; Miura, N.; Yamazoe, N. J. Mater. Sci. 1992, 27, 963.   DOI
15 Meng, D.; Yamajaki, Y.; Shen Y.; Liu Z.; Kikuta T. Appl. Surf. Sci. 2009, 256, 1050.   DOI   ScienceOn
16 Matsuyama, N.; Okazaki, S.; Nakagawa, H.; Fukuda, K. Thin Solid Films 2009, 517, 4650.   DOI   ScienceOn
17 Tutov, E. A. Semiconductors 2008, 42, 1561.   DOI
18 Khatko, V.; Vallejos, S.; Calderer, J.; Gracia, I.; Cane, C.; Llobet, E.; Correig, X. Sens. Actuators B: Chem. 2009, 140, 356.   DOI   ScienceOn
19 Srivastava, V.; Jain, K. Sens. Actuators B: Chem. 2008, 133, 46.   DOI   ScienceOn
20 Noordally, E.; Richmond, J.; Tabir, S. F. Catalyst Today 1993, 17, 359.   DOI   ScienceOn
21 Hodgson, A. T.; Faulkner, D.; Sullivan, D. P.; Dibartolomeo, M. L.; Russel, D. L.; Fisk, W. J. Atmospheric Environment 2003, 37, 5517.   DOI   ScienceOn
22 Seiyama, T.; Kata, A.; Fukiishi, K.; Nagatini, M. Anal. Chem. 1962, 34, 1502.   DOI
23 Taguchi, N. Jap. Patent 45-382, 1962.
24 Faglia, G.; Nelli, P.; Sberveglieri, G. Sensor and Actuators B 1994, 18-19, 497.
25 Saji, K. et al. Proc. Int. Meet. on Chemical Sensors; Fukuoka: Japan, 1983; p 171.
26 Levy, M. et al. J. Physique. Coll. 1991, 6(41), 329.
27 Wang, Y.; Wang, S.; Zhao, Y.; Zhu, B.; Kong, F.; Wang, D.; Wu, S.; Huang, W.; Zhang, S. Sensors and Actuators B 2007, 125, 79.   DOI   ScienceOn
28 Zhan, Z.; Lu, J.; Song, W.; Jiang, D.; Xu, J. Materials Research Bulletin 2007, 42, 228.   DOI   ScienceOn