QCM fruit gas sensor based on PANI/SnO2 composite materials

XUE Yan-bing; LI Ya; YU Jing-yi

doi:10.3788/OPE.20162413.0511

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QCM fruit gas sensor based on PANI/SnO₂ composite materials

更新时间：2020-08-13

- QCM fruit gas sensor based on PANI/SnO₂ composite materials
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 511-519(2016)
- 作者机构：
  
  大连交通大学电气信息学院,辽宁大连,116028
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0511
  CLC： TP212.2
- Received：10 May 2016，
  
  Revised：17 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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薛严冰, 李亚, 于婧怡. 基于PANI/SnO2复合材料的QCM水果气体传感器[J]. 光学精密工程, 2016,24(10s): 511-519

XUE Yan-bing, LI Ya, YU Jing-yi. QCM fruit gas sensor based on PANI/SnO2 composite materials[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 511-519
薛严冰, 李亚, 于婧怡. 基于PANI/SnO2复合材料的QCM水果气体传感器[J]. 光学精密工程, 2016,24(10s): 511-519 DOI： 10.3788/OPE.20162413.0511.

XUE Yan-bing, LI Ya, YU Jing-yi. QCM fruit gas sensor based on PANI/SnO2 composite materials[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 511-519 DOI： 10.3788/OPE.20162413.0511.

摘要

为监测水果在仓储、运输等过程中的新鲜程度，研制了基频为6MHz的石英晶振微天平（QCM）气体传感器。采用水热法制备了SnO

纳米材料，在甲苯磺酸（TSA）酸性条件下，运用一步原位聚合法在在石英晶体表面沉积了不同原子比例的PANI/SnO

复合气敏薄膜。设计并制作了相应的起振、差频、频压转换及数据采集电路，搭建了气敏性能测试平台。研究了不同复合比的PANI/SnO

薄膜对不同成熟度的香蕉和苹果释放气体的敏感特性。结果表明，10%比例的PANI/SnO

传感器对苹果释放气性能最佳，当频率变化量达到约1100Hz时，可判断苹果腐烂。20%比例的PANI/SnO

传感器对香蕉释放气性能最佳，当频率变化量达到1 300 Hz左右时，可判断香蕉进入成熟期。两种传感器均具有灵敏度高、线性度好、响应速度快、重复性好等优点。对气敏机理进行了初步分析。

Abstract

A fundamental frequency of 6 MHz quartz crystal microbalance (QCM) gas sensor is researched in order to monitor the fruit freshness in the process of storage

transportation and so on. SnO

nano-materials were prepared by hydrothermal method

under the condition of p-toluene sulfonic acid (TSA) acidic

the different atomic proportions of PANI/SnO

composite gas sensing films were synthesized by one-step in situ polymerization method and were coated on the Quartz Crystal. The gas-sensing performance test platform was built

which consisting of start-up

difference frequency

F/V and data acquisition circuits. Different compound ratio of PANI/SnO

thin films were studied with different maturity of banana and apple released gas sensitive properties. The results show that 10% of the proportion of PANI/SnO

gas sensor has the best performance for apple releasing gas

when the frequency change of about 1100Hz

can judge apples rot. And the 20% proportion of PANI/SnO

gas sensor has the best performance for banana releasing gas

when the frequency change amount to around 1300Hz

can be judged bananas into maturity period. Both sensors have the advantages of high sensitivity

good linearity

fast response and good repeatability. The sensitive mechanism is analyzed preliminarily.

关键词

Keywords

references

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