Abstract
In this paper, quartz crystal microbalance (QCM) humidity sensors based on polypyrrole (PPy) modified tin disulfide (SnS2) nanocomposite have been fabricated. The morphology and composition of the PPy/SnS2 nanocomposite film were examined by means of SEM and TEM. The hydrophilicity of the PPy/SnS2 nanocomposite film sensor was verified by the contact angle experiment. The humidity sensing characteristics of the PPy/SnS2 nanocomposite sensor was studied at room temperature. The experimental results illustrated that the PPy/SnS2 nanocomposite coated QCM sensor was very sensitive to humidity and demonstrated high sensitivity, short response time, and excellent repeatability, which was surpassed the pure PPy and pure SnS2. The Langmuir adsorption model is used to explain the humidity sensing mechanism of PPy/SnS2 based QCM sensor. The enhanced humidity sensing properties are attributed to the nanostructure and hydrophilicity of the PPy/SnS2 nanocomposite.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.