Preparation and humidity sensing properties of Fe-doped mesoporous silica SBA-15

被引：74
|
作者：
Qi, Qi [1 ]
Zhang, Tong [1 ,2 ]
Zheng, Xuejun [2 ]
Wan, Lifeng [3 ]
机构：
[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China
[2] Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China
[3] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 135卷 / 01期
关键词：
Humidity sensitivity; SBA-15; Complex impedance plots; Sensor;
D O I：
10.1016/j.snb.2008.08.036
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Fe-doped mesoporous silica SBA-15 has been studied as a humidity sensing material. Comparing with pure SBA-15, Fe-doped SBA-15 shows improved humidity sensing properties within the relative humidity (RH) range of 11-95%. The impedance of our product changes by more than four orders of magnitude over the whole humidity range with the response time and recovery time are about 20 and 50 s, respectively. High selectivity and good stability are also observed based on our product. These results make Fe-doped SBA-15 a good candidate in fabricating humidity sensor. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：255 / 261
页数：7
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