Polyaniline nanofiber based surface acoustic wave gas sensors -: Effect of nanofiber diameter on H2 response
Polyaniline nanofiber based surface acoustic wave gas sensors -: Effect of nanofiber diameter on H2 response
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DOI：
10.1109/jsen.2006.883769
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发表时间：
2007-01-01
影响因子：
4.3
通讯作者：
Kalantar-zadeh, Kourosh
中科院分区：
文献类型：
--
作者：
Sadek, Abu Z.;Baker, Christina O.;Kalantar-zadeh, Kourosh
采用无模板快速混合反应法，通过苯胺的化学氧化聚合制备了聚苯胺纳米纤维。在合成中使用盐酸（HCl）和樟脑磺酸（CSA），以获得平均直径为30-和50-nm的聚苯胺纳米纤维。将纳米纤维沉积到层状ZnO/64度YX LiNbO 3表面声波换能器上。在室温下操作时，对传感器进行氢气（H-2）测试。发现用于聚苯胺掺杂合成的掺杂剂对器件灵敏度有显著影响。传感器的响应被发现是更大的直径为50 nm的CSA掺杂的基于纤维素的传感器，而响应和恢复时间更快的直径为30 nm的HCl掺杂的纳米纤维。
A template-free rapidly mixed reaction was employed to synthesize polyaniline nanofibers using chemical oxidative polymerization of aniline. Hydrochloric acid (HCl) and camphor sulfonic acid (CSA) were used in the synthesis to obtain 30- and 50-nm average diameter polyaniline nanofibers. The nanofibers were deposited onto layered ZnO/64 degrees YX LiNbO3 surface-acoustic-wave transducers. The sensors were tested toward hydrogen (H-2) gas while operating at room temperature. The dopant for the polyaniline nanofiber synthesis was found to have a significant effect on the device sensitivity. The sensor response was found to be larger for the 50-nmdiameter CSA-doped nanofiber based sensors, while the response and recovery times were faster for the 30-nm diameter HCl-doped nanofibers.