| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7145926 | Sensors and Actuators B: Chemical | 2015 | 6 Pages |
Abstract
AlPO4-5 zeolite was successfully employed in a resistance type humidity sensor. AlPO4-5 zeolite humidity sensor was fabricated by coating nanosized materials over interdigitated electrodes. The sensor shows good linearity over a relative humidity (RH) range from 11% to 95%. At the frequency of 100Â Hz, response and recovery time are both about 2Â s, and the maximum hysteresis is <3%. In nanoscale confinement range, the sorbed water quantity in AlPO4-5 channels is exceptionally large and the water sorption phenomenon looks like “capillary condensation” phase transition. The complex impedance at different RH was investigated to understand the sensing mechanism. The results indicate the potential application of AlPO4-5 zeolite for fabricating high-performance humidity sensors.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yu Chen, Yupeng Zhang, Dongmei Li, Fengli Gao, Caihui Feng, Shanpeng Wen, Shengping Ruan,