THE CHARACTERIZATION OF A SnO2-CuO COMPOSITE–TYPE GAS SENSOR HAVING SENSITIVITY FOR H2 GAS

Authors

  • Tulus Ikhsan Nasution School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Author
  • Ramli Omar School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Author
  • Ibrahim Abu Talib School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Author
  • Syahrial School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Author
  • Elvaswer School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Author

Abstract

The hydrogen gas sensing properties and the electrical conductivity of SnO2-CuO composites were investigated at the temperature range of 125 - 400 oC in air and in 200 ppm H2 gas. Four composite samples of SnO2:CuO with the ratio of 4:1, 3:2, 2:3 and 1:4, respectively, were fabricated in the pellet form by mechanically pressing and sintered at 800 oC for 3 h in air. The electrical conductivity of the composites was found to increase with the increasing content of CuO and the SnO2:4CuO composite showed the highest conductivity value. On the other hand, 2SnO2:3CuO composite was found to have the highest sensitivity to 200 ppm H2 gas and may be suitable for use as a H2 gas sensor.

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Published

16-03-2026

Issue

Vol. 12 No. 1 (2004): Solid State Science and Technology

Section

Articles

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