p-Toluenesulfonic acid doped vanadium pentoxide/polypyrrole film for highly sensitive hydrogen sensor

Kanzhigitova D. Askar P. Tapkharov A. Kudryashov V. Abutalip M. Rakhmetullayeva R. Adilov S. Nuraje N.
December 2023 Springer Science and Business Media B.V.

Advanced Composites and Hybrid Materials
2023 #6 Issue 6

Properly assembled nanostructure of hybrid materials leads to better hydrogen gas sensing performance. In this study, a nove, and facile assembly approach was developed to construct a relatively quick and sensitive conductive polymer sensor for detecting trace quantities of hydrogen gas in a nitrogen atmosphere. Through chemical polymerization, hybrid thin films of vanadium pentoxide (V₂O₅) and polypyrrole (PPY) were fabricated to form the ordered structure of the composites. Also, the effect of p-toluenesulfonic acid, a dopant, on the structure and properties of conducting polymer and vanadium pentoxide composite was investigated. The dopant effect was proved to improve sensing performance via a hydrogen sensing experiment. These sensors are able to detect minor current changes induced by low-coordinated hydrogen exposure (5–250 ppm) interactions at room temperature and have quick response and recovery times of 42 s and 37 s, respectively.

Conducting polymer , Hybrid materials , Hydrogen , Nanomaterials , Polypyrrole , Sensor , Vanadium pentoxide

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Department of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Department of Chemical & Materials Engineering, School of Engineering & Digital Science, Nazarbayev University, Astana, 010000, Kazakhstan
Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
Lab of Renewable Energy, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan

Department of Chemistry and Chemical Technology
Department of Chemical & Materials Engineering
Department of Chemistry
Lab of Renewable Energy

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