Recovery properties of hydrogen gas sensor with Pd/titanate and Pt/titanate nanotubes photo-catalyst by UV radiation from catalytic poisoning of H2S

Dae Ung Hong; Chi Hwan Han; Sang Hyun Park; Il Jin Kim; Jihye Gwak; Sang Do Han; Hyun Jae Kim

doi:10.1016/j.cap.2008.01.010

Recovery properties of hydrogen gas sensor with Pd/titanate and Pt/titanate nanotubes photo-catalyst by UV radiation from catalytic poisoning of H₂S

Dae Ung Hong, Chi Hwan Han, Sang Hyun Park, Il Jin Kim, Jihye Gwak, Sang Do Han, Hyun Jae Kim

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article

25 Citations (Scopus)

Abstract

Recovery properties after H₂S catalytic poisoning of catalytic-type gas sensor with photo-catalysts and UV radiation have been examined. Each sensing material of the sensor consists of Pd, Pt supported on γ-Al₂O₃ and Pd/titanate, Pt/titanate nanotubes or TiO₂ particles. Pd/titanate and Pt/titanate nanotubes photo-catalyst were synthesized by hydrothermal synthesis method. All the sensors were deactivated after 500 ppm H₂S exposure for 20 h. The sensors with Pd/titanate or Pt/titanate nanotubes showed regenerated voltage response under UV radiation. However the sensor with TiO₂ particles showed negligible regenerated voltage response. Regenerated voltage response with Pd/titanate or Pt/titanate nanotubes may stem from location of Pd or Pt catalyst on the titanate nanotube photo-catalyst.

Original language	English
Pages (from-to)	172-178
Number of pages	7
Journal	Current Applied Physics
Volume	9
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2008.01.010
Publication status	Published - 2009 Jan 1

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All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy(all)

Cite this

Hong, D. U., Han, C. H., Park, S. H., Kim, I. J., Gwak, J., Han, S. D., & Kim, H. J. (2009). Recovery properties of hydrogen gas sensor with Pd/titanate and Pt/titanate nanotubes photo-catalyst by UV radiation from catalytic poisoning of H₂S. Current Applied Physics, 9(1), 172-178. https://doi.org/10.1016/j.cap.2008.01.010

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abstract = "Recovery properties after H2S catalytic poisoning of catalytic-type gas sensor with photo-catalysts and UV radiation have been examined. Each sensing material of the sensor consists of Pd, Pt supported on γ-Al2O3 and Pd/titanate, Pt/titanate nanotubes or TiO2 particles. Pd/titanate and Pt/titanate nanotubes photo-catalyst were synthesized by hydrothermal synthesis method. All the sensors were deactivated after 500 ppm H2S exposure for 20 h. The sensors with Pd/titanate or Pt/titanate nanotubes showed regenerated voltage response under UV radiation. However the sensor with TiO2 particles showed negligible regenerated voltage response. Regenerated voltage response with Pd/titanate or Pt/titanate nanotubes may stem from location of Pd or Pt catalyst on the titanate nanotube photo-catalyst.",

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Recovery properties of hydrogen gas sensor with Pd/titanate and Pt/titanate nanotubes photo-catalyst by UV radiation from catalytic poisoning of H₂S. / Hong, Dae Ung; Han, Chi Hwan; Park, Sang Hyun; Kim, Il Jin; Gwak, Jihye; Han, Sang Do; Kim, Hyun Jae.

In: Current Applied Physics, Vol. 9, No. 1, 01.01.2009, p. 172-178.

Research output: Contribution to journal › Article

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10.1016/j.cap.2008.01.010