Browse > Article
http://dx.doi.org/10.5369/JSST.2012.21.3.167

Highly Sensitive and Selective Gas Sensors Using Catalyst-Loaded SnO2 Nanowires  

Hwang, In-Sung (Department of Materials Science and Engineering, Korea University)
Lee, Jong-Heun (Department of Materials Science and Engineering, Korea University)
Publication Information
Journal of Sensor Science and Technology / v.21, no.3, 2012 , pp. 167-171 More about this Journal
Abstract
Ag- and Pd-loaded $SnO_2$ nanowire network sensors were prepared by the growth of $SnO_2$ nanowires via thermal evaporation, the coating of slurry containing $SnO_2$ nanowires, and dropping of a droplet containing Ag or Pd nanoparticles, and subsequent heat treatment. All the pristine, Pd-loaded and Ag-loaded $SnO_2$ nanowire networks showed the selective detection of $C_2H_5OH$ with low cross-responses to CO, $H_2$, $C_3H_8$, and $NH_3$. However, the relative gas responses and gas selectivity depended closely on the catalyst loading. The loading of Pd enhanced the responses($R_a/R_g$: $R_a$: resistance in air, $R_g$: resistance in gas) to CO and $H_2$ significantly, while it slightly deteriorated the response to $C_2H_5OH$. In contrast, a 3.1-fold enhancement was observed in the response to 100 ppm $C_2H_5OH$ by loading of Ag onto $SnO_2$ nanowire networks. The role of Ag catalysts in the highly sensitive and selective detection of $C_2H_5OH$ is discussed.
Keywords
Gas Sensor; $SnO_2$ Nanowires; Catalyst; Selective Detection;
Citations & Related Records
연도 인용수 순위
  • Reference
1 M. Yuasa, T. Masaki, T. Kida, K. Shimanoe, and N. Yamazoe, "Nano-sized PdO loaded $SnO_{2}$ nanoparticles by reverse micelle method for highly sensitive CO gas sensor", Sens. Actuators B, vol. 136, pp. 99-104, 2009.   DOI   ScienceOn
2 J.-K. Choi, I.-S. Hwang, S.-J. Kim, J.-S. Park, S.-S. Park, U. Jeong, Y.C. Kang, and J.-H. Lee, "Design of selective gas sensors using electrospun Pd-doped $SnO_{2}$ hollow nanofibers", Sens. Actuators B, vol. 150, pp. 191-199, 2010.   DOI   ScienceOn
3 C. -B. Lim and S. Oh, "Microstructure evolution and gas sensitivities of Pd-doped $SnO_{2}$-based sensor prepared by three different catalyst-addition process", Sens. Actuators B, vol. 30, pp. 223-231, 1996.   DOI   ScienceOn
4 L.Liu, T. Zhang, S. Li, L. Wang, and T. Tian, "Preparation, characterization, and gas-sensing properties of Pd-doped $In_{2}O_{3}$ nanofibers", Mater. Lett., vol. 63, pp. 1975-1977, 2009.   DOI   ScienceOn
5 P. Hu, G. Du, W. Zhou, J. Cui, J. Lin, H. Liu, D. Liu, J. Wang, and S. Chen, "Enhancement of ethanol vapor sensing of $TiO_{2}$ nanobelts by surface engineering", ACS Appl. Mater. Interfaces, vol. 2, pp. 3263-3269, 2010.   DOI   ScienceOn
6 Q. Xiang, G. Meng, Y. Zhanga, J. Xu, P. Xu, Q. Pan, and W. Yu, "Ag nanoparticle embedded-ZnO nanorods synthesized via a photochemical method and its gassensing properties", Sens. Actuators B, vol. 143, pp. 635-640, 2010.   DOI   ScienceOn
7 X. Cheng, Y. Xu, S. Gao, H. Zhao, and L. Huo, "Agnanoparticles modified TiO2 sphereical heterostuctures with enhanced gas-sensing performances", Sens. Actuators B, vol. 155, pp. 716 -721, 2011.   DOI   ScienceOn
8 N. Yamazoe, "New approaches for improving semiconductor gas sensors", Sens. Actuators B, vol. 5, pp. 7-19, 1991.   DOI   ScienceOn
9 I.-S. Hwang, Y.-S. Kim, S.-J. Kim, B-K. Ju, and J.-H. Lee, "A facile fabrication of semiconductor nanowires gas sensor using PDMS patterning and solution deposition", Sens. Actuators B, vol. 136, pp. 224-229, 2009.   DOI   ScienceOn
10 Y.-J. Choi, I.-S. Hwang, J.-G. Park, K.J. Choi, J.-H. Park, and J.-H. Lee, "Novel fabrication of $SnO_{2}$ nanowire gas sensor with a high sensitivity", Nanotechnology, vol. 19, p. 095507, 2008.   DOI   ScienceOn
11 I.-S. Hwang, E.-B. Lee, S-J. Kim, J.-K. Choi, J.-H. Cha, H.-J. Lee, B.-K. Ju, and J.-H. Lee, "Gas sensing properties of $SnO_{2}$ nanowires on micro heater", Sens. Actuators B, vol. 154, pp. 295-300, 2009.   DOI   ScienceOn
12 A. Kolmakov, D. O. Klenov, Y. Lilach, S. Stemmer, and M. Moskovits, "Enhanced gas sensing by individual $SnO_{2}$ nanowires and nanobelts functionalized with Pd catalyst particles", Nano Lett., vol. 5, pp. 667-673, 2005.   DOI   ScienceOn
13 Y. Zhang, J. Xu, P. Xu, Y. Zhu, X. Chen, and W. Yu, "Decoration of ZnO nanowires with Pt nanoparticles and their improved gas sensing and photocatalytic performances", Nanotechnology, vol. 21, p. 285501, 2010.   DOI   ScienceOn
14 I.-S. Hwang, J.-K Choi, S.-J. Kim, K.-Y. Dong, J.-H. Kwon, B.-K. Ju, and J.-H. Lee, "Enhanced $H_{2}S$ sensing characteristics of $SnO_{2}$ nanowires functionalized with CuO", Sens. Actuators B, vol. 142, pp. 105-110, 2009.   DOI   ScienceOn
15 C.J. Murphy, T.K. Sau, A.M. Gole, C. J. Orendorff, J. Gao, L. Gou, S. E. Hunyadi, and T. Li, "Anisotropic metal nanoparticles: synthesis, assembly and optical applications", J. Phys. Chem. B, vol. 109, pp. 13857- 13870, 2005.
16 S. Matsushima, T. Maekawa, J. Tamaki, N. Miura, and N. Yamazoe, "New methods for supporting palladium on a tin oxide gas sensor", Sens. Actuators B, vol. 9, pp. 71-78, 1992.   DOI   ScienceOn
17 X. Duan, Y. Huang, Y. Cui, J. Wang, and C. M. Lieber, "Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devices", Nature, vol. 409, pp. 66-69, 2001.   DOI   ScienceOn
18 A. Kolmakov and M. Moskovits, "Chemical sensing and catalysis by one-dimensional metal-oxide nanostructures", Annu. Rev. Mater. Res. vol. 34, pp. 151-180, 2004.   DOI   ScienceOn
19 I.-S. Hwang and J.-H. Lee, "Gas sensors using oxide nanowire networks: An overview", J. Nanoeng. Nanomanf., vol. 1, pp. 4-17, 2011.   DOI
20 Z. Fan, D. Wang, P. C. Chang, W. Y. Tseng, and J. G. Lu, "ZnO NW field-effect transistor and oxygen sensing property", Appl. Phys. Lett., vol. 85, pp. 5923- 5925, 2004.   DOI   ScienceOn