氧化镍-铁酸锌复合薄膜/锡掺杂玻璃光波导传感元件的制备及其对硫化氢气体的气敏性

doi:10.3724/SP.J.1095.2014.30256

摘要/Abstract

摘要： 用溶胶-凝胶法制成了NiO掺杂的ZnFe2O4溶胶，并用浸渍提拉法将其固定在锡掺杂玻璃光波导表面，研制了NiO-ZnFe2O4复合薄膜/锡掺杂玻璃光波导气敏元件，并对无机有毒气体进行了检测。实验结果表明，在室温下，该传感元件对H2S气体具有一定的选择性响应，而对相同浓度的其它无机气体的响应相对较小，能够检测到1.0×10-9（体积比）的H2S气体，其响应和恢复时间分别是6和8 s。该元件具有灵敏度高、响应-恢复快、可逆性和重复性好、容易制备，在室温下便于操作等特点。

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

中图分类号:

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麦迪纳, 米孜帕尔·麦麦提伊明, 阿曼古丽·图尔贡, 艾尔肯·吐尔逊, 阿布力孜·伊米提. 氧化镍-铁酸锌复合薄膜/锡掺杂玻璃光波导传感元件的制备及其对硫化氢气体的气敏性[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30256.

MADINA1, MUZAPAR Mamtimin2, AMANGUL Turhun1, Erkin Tursun1, ABLIZ Yimit1*. Preparation of Nickel Oxide-Zinc Ferrite Composite Thin Film/Tin-diffused Glass Optical Waveguide Sensor and Its Gas-sensing for Hydrogen Sulfide[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30256.

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