| 苯甲酸溶胶-凝胶法制备ZnFe2O4气敏材料 |
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| 引用本文： | 娄向东,张宁,王晓兵,李新莉,王学锋.苯甲酸溶胶-凝胶法制备ZnFe2O4气敏材料[J].传感器与微系统,2009,28(2):53-55. |
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| 作者姓名： | 娄向东 张宁 王晓兵 李新莉 王学锋 |
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| 作者单位： | 河南师范大学,化学与环境科学学院,黄淮水环境与污染防治省部共建教育部重点实验室,河南,新乡,453007 |
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| 摘 要： | 以苯甲酸为凝胶剂，用溶胶-凝胶法制备ZnFe2O4粉体，通过XRD，SEM等手段对粉体的晶体结构、形貌等进行表征，结果表明：产物为尖晶石结构，颗粒分布比较均匀。采用静态配气法测定材料的气敏性能，发现以ZnFe2O4为基体的气敏元件的最佳煅烧温度为700℃，在175℃的工作温度下对100×10^-6 H2S气体的灵敏度高达126，并具有选择性好，响应—恢复时间短，稳定性好等特点。
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| 关 键 词： | ZnFe2O4 苯甲酸 溶胶-凝胶法 气敏性能 稳定性 |
Gas sensing materials of ZnFe_2O_4 prepared by benzoic acid sol-gel method |
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| LOU Xiang-dong,ZHANG Ning,WANG Xiao-bing,LI Xin-li,WANG Xue-feng.Gas sensing materials of ZnFe_2O_4 prepared by benzoic acid sol-gel method[J].Transducer and Microsystem Technology,2009,28(2):53-55. |
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| Authors: | LOU Xiang-dong ZHANG Ning WANG Xiao-bing LI Xin-li WANG Xue-feng |
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| Affiliation: | LOU Xiang-dong,ZHANG Ning,WANG Xiao-bing,LI Xin-li,WANG Xue-feng(Key Laboratory for Yollow River , Huaihe River Water Environment , Pollution Control,Ministry of Education,College of Chemistry , Environmental Science,Henan Normal University,Xinxiang 453007,China) |
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| Abstract: | ZnFe2O4 powder is prepared by a sol-gel method with benzoic acid as coagulator.Its structure and morphology are analyzed by XRD and SEM.The results show that the powder of ZnFe2O4 is spinel-type and has good dispersity.The gas sensing characteristics of the materials are tested in static slate.It has optimal calcining temperature 700 ℃ and has a high sensitivity to 100×10-6 H2S as high as 126 at lower working temperature 175 ℃.The sensor has satisfactory selectivity,quickly response and recover times and good stability. |
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| Keywords: | ZnFe2O4 |
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