Capacitive type humidity sensor based on PANI decorated Cu-ZnS porous microspheres
Author | Parangusan, Hemalatha |
Author | Bhadra, Jolly |
Author | Ahmad, Zubair |
Author | Mallick, Shoaib |
Author | Touati, Farid |
Author | Al-Thani, Noora |
Available date | 2024-07-10T07:56:49Z |
Publication Date | 2020 |
Publication Name | Talanta |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1016/j.talanta.2020.121361 |
ISSN | 399140 |
Abstract | Porous microstructure materials are considered good candidates for the development of highly sensitive and fast humidity sensors. In this regard, we prepared polyaniline (PANI) decorated Cu-ZnS porous microsphere structures (PMSs) for the fabrication of humidity sensors. PANI coated Cu-ZnS PMSs were synthesized by a hydrothermal method and in situ polymerization process. The synthesized PMSs were characterized by different techniques to study the structural, morphological and surface absorption properties. Several compositions for the PANI/Cu-ZnS PMS were investigated, which were then compared with pure PANI. The experimental observations demonstrate that a PANI/1%Cu-ZnS PMS has better sensitivity, fast response and good stability compared to pure PANI and other PANI/CuZnS compositions. Finally, a PANI/1% Cu-ZnS PMS was found to be optimized for humidity sensors due to its well distributed roughness, porosity and hydrophilicity. The average response and recovery times for PANI/1% Cu-ZnS were found to be 42 s and 24 s, respectively, which outperform recent results. |
Sponsor | This work was supported by the Qatar University Internal Grant No. QUCG-CAM-2019-1 . The findings achieved herein are solely the responsibility of the authors. |
Language | en |
Publisher | Elsevier |
Subject | Capacitive humidity sensing Composite Humidity sensor Sensitivity |
Type | Article |
Volume Number | 219 |
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Center for Advanced Materials Research [1349 items ]
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Electrical Engineering [2611 items ]