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  

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

作　　者：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[1] 阿布力孜·伊米提[1] 

机构地区：[1]新疆大学化学化工学院乌鲁木齐830046 [2]新疆大学北京化工大学信息学院,北京102200

出　　处：《应用化学》2014年第3期354-360,共7页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21265020)资助项目~~

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。NiO doped ZnFe204 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.

关 键 词：光波导气敏元件 氧化镍-铁酸锌复合薄膜 硫化氢气体 

分 类 号：O644[理学—物理化学]