摘要
In this paper,pure polyaniline (PAN:Emeraldine base (EB) form) films and the mixed LB films of PAN and acetic acid (AA) with various layers were prepared by Langmuir-Blodgett (LB) technique.PAN based gas sensors were fabricated by deposited PAN based LB thin films on the interdigitated electrodes.The gas-sensitivity to NO_2 of PAN based gas sensors with different layers was studied.It is found that pure polyaniline LB films present higher sensitivity,responsivity and reversibility to NO_2 gas compared with polyaniline and acetic acid mixed LB films.The response time of 3-layer and 15-layer pure polyaniline LB films to 20μg/g NO_2 gas is about 10 s and 30 s,respectively.The recovery time of the 15-layer pure polyaniline LB films is close to 5 min.
In this paper, pure polyaniline （PAN： Emeraldine base（EB） form ） films and the mixed LB films of PAN and acetic aeid （AA） with various layers were prepared by Langmuir-Blodgett（LB） technique. PAN based gas sensors were fabricated by deposited PAN based LB thin films on the interdigitated electrodes. The gas-sensitivity to NO2 of PAN based gas sensors with different layers was studied. It is found that pure polyaniline LB films present higher sensitivity, responsivity and reversibility to NO2 gas compared with polyaniline and acetic acid mixed LB films. The response time of 3-layer and 15-layer pure polyaniline LB films to 20 ~tg/g NO2 gas is about 10 s and 30 s, respeetively. The recovery time of the 15-layer pure polyaniline LB films is close to 5 min.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第A03期59-60,共2页
Rare Metal Materials and Engineering
