Preparation, characterization and gas sensitivity studies of MWCNTs-doped PANI nanocomposites

被引：0

作者：

Du, Hai-Ying ^{[1
,2
]}

Wang, Jing ^{[1
]}

Zhang, Xiu-Feng ^{[2
]}

Xu, Guo-Kai ^{[2
]}

Tian, Jiang-Li ^{[1
]}

机构：

[1] [1,Du, Hai-Ying

[2] Wang, Jing

[3] Zhang, Xiu-Feng

[4] Xu, Guo-Kai

[5] Tian, Jiang-Li

来源：

Wang, J. | 1600年 / Journal of Functional Materials, P.O. Box 1512, Chongqing, 630700, China卷 / 44期

关键词：

Gases - Multiwalled carbon nanotubes (MWCN) - Gas detectors - Yarn - Chemical sensors - Doping (additives);

D O I：

10.3969/j.issn.1001-9731.2013.20.027

中图分类号：

学科分类号：

摘要：

0.02wt% multi-wall carbon nanotubes (MWCNTs) doped polyaniline (PANI) nanopowders were prepared by chemical polymerization of protonic acid method in 0°C water bath. The PANI and 0.05wt% MWCNTs-doped PANI nanopowders were prepared by the same way. The morphology and structure of PANI, MWCNTs-doped PANI nanopowders were analyzed by XRD, FT-IR and SEM. Gas sensors were fabricated based on PANI, 0.02wt% MWCNTs-doped PANI and 0.05wt% MWCNTs-doped PANI. The response sensitivity of gas sensors to NH3 was measured in NH3 concentration range of (0.1-1.5)×10-4. The response curves of three gas sensors were basically linearity. The response sensitivity of the gas sensor based on 0.02wt% MWCNTs-doped PANI was the highest, the responses were 27.65 and 1.94 for 1.5×10-4 NH3 and 1.0×10-5 NH3, respectively. The stability of the gas sensor based on 0.02wt% MWCNTs-doped PANI was tested, and the sensor showed good stability in three months. The sensing mechanism of MWCNTs-doped PANI gas sensor was analyzed.

引用

页码：3024 / 3029