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Selective NO2 Sensors Using MoS2-MoO2 Composite Yolk-shell Spheres 원문보기

Journal of sensor science and technology = 센서학회지, v.24 no.3, 2015년, pp.151 - 154  

Jeong, Seong Yong (Department of Materials Science and Engineering, Korea University) ,  Choi, Seung Ho (Department of Materials Science and Engineering, Korea University) ,  Yoon, Ji-Wook (Department of Materials Science and Engineering, Korea University) ,  Won, Jong Min (Department of Materials Science and Engineering, Korea University) ,  Kang, Yun Chan (Department of Materials Science and Engineering, Korea University) ,  Park, Joon-Shik (Smart Convergence Sensor Research Center, Korea Electronic Technology Institute (KETI)) ,  Lee, Jong-Heun (Department of Materials Science and Engineering, Korea University)

Abstract AI-Helper 아이콘AI-Helper

The gas sensing characteristic of $MoS_2-MoO_2$ composite yolk-shell spheres were investigated. $MoO_3$-carbon composite spheres were prepared by ultrasonic spray pyrolysis of aqueous droplets containing Mo-source and sucrose in nitrogen, which were converted into $MoO_3$<...

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제안 방법

  • In this contribution, MoS2-MoO2 composite yolk-shell spheres are prepared by the partial sulfidation of MoO3 yolk-shell spheres and their gas sensing characteristics are investigated. Main focus of the study is directed at the selective and reversible detection of specific gas using MoS2- MoO2 composite yolk-shell spheres.
  • yolk-shell spheres and their gas sensing characteristics are investigated. Main focus of the study is directed at the selective and reversible detection of specific gas using MoS2- MoO2 composite yolk-shell spheres.
  • The MoS2-MoO2 composite yolk-shell spheres were prepared by the partial sulfidation of MoO3 yolk-shell spheres and their gas sensing characteristics were investigated. The sensor showed low and incomplete gas responses at < 200ºC, while it showed high and reversible gas sensing characteristics at 200 and 250ºC.

대상 데이터

  • The MoO3-carbon composite spheres were prepared by the ultrasonic spray pyrolysis of aqueous droplets containing 0.1 M of MoO3 (Kanto Chemical Co., Inc., 99.5%), 0.1 M of sucrose (Sigma-Aldrich, 99.5%), and H2O2 (Sigma-Aldrich, 29.0-32.0%) at 900ºC (carrier gas: nitrogen, flow rate: 10 L/min).
  • 1. The powders were identified as the composite between MoS2 (JCPDS #37-1492) and MoO2 (JCPDS #32-0671). The reduction of Mo6+ into Mo4+ and the formation of MoS2 phase were attributed to the partial sulfidation reaction.
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참고문헌 (14)

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  3. M. Donarelli, S. Prezioso, F. Perrozzi, F. Busti, M. Nardone, L. Giancaterini, C. Cantalini, and L Ottaviano, "Response to $NO_2$ and other gases of resistive chemically exfoliated $MoS_2$ -based gas sensors", .Sens. Actuators B, Vol. 207, pp. 602-613, 2015. 

  4. H. Li, J. Wu, Z. Yin, and H. Zhang, "Preparation and applications of mechanically exfoliated single-layer and multilayer $MoS_2$ and $WSe_2$ nanosheets", Acc. Chem. Res., Vol. 47, pp. 1067-1075, 2014. 

  5. J. K. Miremadi, R. C. Singh, S. R. Morrison, and J. Colbow, "A highly sensitive and selective hydrogen sensor from thick oriented films of $MoS_2$ ", Appl. Phys. A, Vol. 63, pp. 271-275, 1996. 

  6. B. Cho, M. G. Han, M. Choi, J. Yoon, A. R. Kim, Y.-J. Lee, S.-G. Park, J.-D. Kwon, C. S. Kim, M. Song, Y. Jeong, K.- S. Nam, S. Lee, T. J. Yoo, C. G. Kang, B. H. Lee, P. M. Ajayan, and D.-H. Kim, "Charge-transfer-based gas sensing using atomic-layer $MoS_2$ ", Sci. Rep., Vol. 5, pp. 8052, 2015. 

  7. Y. N, Ko, Y. C. Kang, and S. B. Park, "Superior electrochemical properties of $MoS_2$ powders with a $MoS_2$ @void@ $MoS_2$ configuration", Nanoscale, Vol. 6, pp. 4508-4512, 2014. 

  8. Y. N. Ko, S. B. Park, J.-H. Lee, and Y. C. Kang, "Comparison of the electrochemical properties of yolk-shell and dense structured $CoFe_2O_4$ powders prepared by a spray pyrolysis process", RSC Adv., Vol. 4, pp. 40188-40192, 2014. 

  9. Y. J. Hong, J.-W. Yoon, J.-H. Lee, and Y. C. Kang, "Onepot synthesis of Pd-loaded $SnO_2$ yolk-shell nanostructures for ultraselective methyl benzene sensors," Chem. -Eur. J., Vol. 20, pp. 2737-2741, 2014. 

  10. J.-W. Yoon, Y. J. Hong, Y. C. Kang, and J.-H. Lee, "High performance chemiresistive $H_2S$ sensors using Ag-loaded $SnO_2$ yolk-shell nanostructures," RSC Adv., Vol. 4, pp. 16067-16074, 2014. 

  11. Y.-C. Lin, W. Zhang, J.-K. Huang, K.-K. Liu, Y.-H. Lee, C.- T. Liang, C.-W. Chu, and L.-J. Li, "Wafer-scale $MoS_2$ thin layers prepared by $MoO_3$ sulfurization," Nanoscale, Vol. 4, pp. 6637-6641, 2012. 

  12. I. H. Cho, Y. C. Kang, and S. B Park, "Thiophene hydrodesulfurization of unsupported Co-Mo catalysts prepared by spray pyrolysis method", Korean J. Chem. Eng., Vol. 35, pp. 814-818, 1997. 

  13. Y. H. Cho, Y. N. Ko, Y. C. Kang, I.-D Kim, and J. H. Lee, "Ultraselective and ultrasensitive detection of trimethylamine using $MoO_3$ nanoplates prepared by ultrasonic spray pyrolysis", Sens. Actuators B, Vol. 195, pp. 189-196, 2014. 

  14. Q. Yue, Z. Shao, S. Chang, and J. Li, "Adsorption of gas molecules on monolayer $MoS_2$ and effect of applied electric field" Nano Res. Lett., Vol. 8, pp. 425-431, 2013. 

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