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Conductive Polymer (Graphene/PPy)–BiPO4 Composite Applications in Humidity Sensors
- Source :
- Polymers, Vol 13, Iss 12, p 2013 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- In this particular experiment, a chain of conductive polymer graphene/polypyrrole (Gr/PPy) and BiPO4—or (Gr/PPy)–BiPO4—materials were prepared and used as moisture-sensitive materials. The structure and morphology of the conductive polymer (Gr/PPy)–BiPO4 materials were analyzed using an X-ray diffractometer, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Moreover, properties such as hysteresis loop, impedance, sensing response, and response and recovery time were calculated and evaluated using an inductance–capacitance–resistance analyzer. The data expressed that PPy/BiPO4, as prepared in this study, exhibited excellent sensing properties, with impedance changing by only a few orders of range. Furthermore, the response time and time of recovery were 340 s and 60 s, respectively, and negligible humidity hysteresis occurred at different relative humidities. Therefore, conductive PPy/BiPO4, as prepared in the present study, is an excellent candidate for application in humidity sensors.
- Subjects :
- graphene
polypyrrole
impedance
BiPO4
sensing response
Organic chemistry
QD241-441
Subjects
Details
- Language :
- English
- ISSN :
- 20734360
- Volume :
- 13
- Issue :
- 12
- Database :
- Directory of Open Access Journals
- Journal :
- Polymers
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.09b78a80a6024648bcb43c7a3b9cc03e
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/polym13122013