Electrical conductivity response of poly(p-phenylene)/ZSM-5 composite

2007 7th IEEE Conference on Nanotechnology (IEEE NANO) Pub Date : 2007-08-01 DOI:10.1109/NANO.2007.4601372

P. Phumman, A. Sirivat

{"title":"Electrical conductivity response of poly(p-phenylene)/ZSM-5 composite","authors":"P. Phumman, A. Sirivat","doi":"10.1109/NANO.2007.4601372","DOIUrl":null,"url":null,"abstract":"Poly(p-phenylene) (PPP) was chemically synthesized via the oxidative polymerization of benzene and doped with FeCl3. Electrical conductivity response of doped PPP (dPPP) towards CO, H2 and NH3 was investigated. dPPP shows no response towards CO and H2, but it shows a definite negative response to NH3. The electrical conductivity sensitivity of dPPP increases with increasing NH3 concentration. In order to improve sensitivity of the sensor, ZSM-5 zeolite is added into the conductive polymer matrix. The sensitivity of the sensor increases with increasing zeolite content up to 30%. Moreover, the effect of cation type residing in the zeolite pore is investigated: including Na+, K+, NH4 + and H+. The electrical conductivity sensitivity of the composites with different cations in the zeolite can be arranged in this order; 50:1 dPPP(90)/KZ23 <50:1 dPPP<50:1 dPPP(90)/NaZ23<50:1 dPPP(90)/NH4Z23<50:1 dPPP(90)/HZ23. The variation in sensitivity with cation type can be described in term of the acid-base interaction. The 50:1 dPPP(90)/HZ23 possesses the highest sensitivity of -0.36 since H+ has the highest acidity which induces more favorable NH3 adsorption and interaction with the conductive polymer.","PeriodicalId":6415,"journal":{"name":"2007 7th IEEE Conference on Nanotechnology (IEEE NANO)","volume":"67 1","pages":"1085-1088"},"PeriodicalIF":0.0000,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 7th IEEE Conference on Nanotechnology (IEEE NANO)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NANO.2007.4601372","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Poly(p-phenylene) (PPP) was chemically synthesized via the oxidative polymerization of benzene and doped with FeCl₃. Electrical conductivity response of doped PPP (dPPP) towards CO, H₂ and NH₃ was investigated. dPPP shows no response towards CO and H₂, but it shows a definite negative response to NH₃. The electrical conductivity sensitivity of dPPP increases with increasing NH₃ concentration. In order to improve sensitivity of the sensor, ZSM-5 zeolite is added into the conductive polymer matrix. The sensitivity of the sensor increases with increasing zeolite content up to 30%. Moreover, the effect of cation type residing in the zeolite pore is investigated: including Na⁺, K⁺, NH₄ ⁺ and H⁺. The electrical conductivity sensitivity of the composites with different cations in the zeolite can be arranged in this order; 50:1 dPPP(90)/KZ23 <50:1 dPPP<50:1 dPPP(90)/NaZ23<50:1 dPPP(90)/NH₄Z23<50:1 dPPP(90)/HZ23. The variation in sensitivity with cation type can be described in term of the acid-base interaction. The 50:1 dPPP(90)/HZ23 possesses the highest sensitivity of -0.36 since H⁺ has the highest acidity which induces more favorable NH₃ adsorption and interaction with the conductive polymer.

查看原文本刊更多论文

聚(对苯)/ZSM-5复合材料的电导率响应

以苯为原料，以FeCl3为掺杂物，通过氧化聚合合成了聚对苯(PPP)。研究了掺杂PPP (dPPP)对CO、H2和NH3的电导率响应。dPPP对CO和H2没有响应，但对NH3有明显的负响应。dPPP的电导率随NH3浓度的增加而增加。为了提高传感器的灵敏度，在导电聚合物基体中加入ZSM-5沸石。传感器的灵敏度随沸石含量的增加而增加，最高可达30%。此外，还研究了Na+、K+、NH4 +和H+等阳离子类型对沸石孔洞的影响。沸石中不同阳离子的复合材料的电导率灵敏度可按此顺序排列;50:1 dPPP(90)/KZ23 4Z23+具有最高的酸度，诱导更有利的NH3吸附和与导电聚合物的相互作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2007 7th IEEE Conference on Nanotechnology (IEEE NANO)

自引率

0.00%

发文量