Chinese Journal of Applied Chemistry

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Preparation of Nickel Oxide-Zinc Ferrite Composite Thin Film/Tin-diffused Glass Optical Waveguide Sensor and Its Gas-sensing for Hydrogen Sulfide

MADINA1, MUZAPAR Mamtimin2, AMANGUL Turhun1, Erkin Tursun1, ABLIZ Yimit1*   

  1. (1.College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,China;
    2.College of Information,Beijing University of Chemical Technology,Beijing 102200,China)
  • Received:2013-05-20 Revised:2013-07-21 Published:2014-03-10 Online:2014-03-10
  • Contact: Abliz

Abstract: NiO doped ZnFe2O4 sol synthesized by a sol-gel method was dip-coated on a tin-doped glass optical waveguide to fabricate a sensor used for the detection of poisonous gases. The results show that the as-prepared composite film has a good selectivity toward H2S over other gases with the same concentration. The detection limit of H2S is 1.0×10-9(volume ratio) and the corresponding response and recovery time are 6 s and 8 s, respectively. The advantages of sensor encompass easy fabrication, room temperature operation, high sensitivity, fast response and recovery speed, good reversibility and repeatability.

Key words: optical waveguide gas sensor, nickel oxide-zinc ferrite composite film, hydrogen sulfide gas

CLC Number: