[1]帕提曼·尼扎木丁,阿布力孜·伊米提.聚乙烯醇分散对LiFePO4薄膜气敏性的影响[J].郑州大学学报(工学版),2017,38(01):92.[doi:10.13705/j.issn.1671-6833.2017.01.007]
　Patiman Nizamuddin,Abuliz Imiti.The effect of polyvinyl alcohol dispersion on LiFePO4thin film gas sensing properties[J].Journal of Zhengzhou University (Engineering Science),2017,38(01):92.[doi:10.13705/j.issn.1671-6833.2017.01.007]
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聚乙烯醇分散对LiFePO4薄膜气敏性的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
38卷
期数:
2017年01期
页码:
92
栏目:
出版日期:
2017-02-24

文章信息/Info

Title:
The effect of polyvinyl alcohol dispersion on LiFePO4thin film gas sensing properties
作者:
帕提曼·尼扎木丁; 阿布力孜·伊米提
新疆大学化学化工学院,新疆乌鲁木齐,830046新疆大学化学化工学院,新疆乌鲁木齐,830046
Author(s):
Patiman Nizamuddin; Abuliz Imiti
College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang, 830046 
关键词:
光波导气敏元件; 分散剂; LiFePO4薄膜; 气敏性
Keywords:
DOI:
10.13705/j.issn.1671-6833.2017.01.007
文献标志码:
A
摘要:
为了优化LiFePO4薄膜制备条件,提高LiFePO4薄膜气敏元件的灵敏度,用水热法合成LiFePO4并把它分散在聚乙烯醇(PVA)当中.利用旋转-甩涂法将LiFePO4-PVA分散溶液涂抹于锡掺杂玻璃光波导表面,研制出LiFePO4薄膜/锡掺杂玻璃光波导敏感元件;利用平面光波导检测系统对其气敏性进行研究.研究结果表明,分散剂质量分数为2％,超声波振荡时间为2h,分散温度为25℃时,所制备出的敏感元件对二甲苯等苯类气体显出良好的气敏特性,其对二甲苯体积分数的检测范围为1×10-8～1×10-3,分散之后,敏感元件对二甲苯等气体的检测灵敏度有所提高.
Abstract:
In this paper,in order to optimize the preparation conditions and to improve the sensitivity of LiFePO4 thin film gas sensor,the LiFePO4 was synthesized by hydrothermal method and dispersed in polyvinyl alcohol (PVA).The PVA dispersed LiFePO4 thin film/tin-diffused glass optical waveguide sensing element was fabricated via spin-coating a LiFePO4-PVA dispersion solution onto the surface of tin diffused glass optical waveguide;In the end,the gas sensing properties was monitored using the planar optical waveguide detection system.The testing results indicated that,the best condition for fabrication of sensing film was:the dispersant concentration was of 2wt.％,the ultrasonic vibration time was 2 h,dispersion temperature was 25 ℃,and the corresponding sensing element exhibited good responsible to BTXs (benzene,toluene,xylene).The detection limits for the PVA dispersed LiFePO4 thin film/tin-diffused glass optical waveguide sensor was 1 × 10-8-1 × 10-3.After the dispersion,the sensitivity was increased.
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