Abstract
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.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
The authors are thankful to Aygul Nuraje for editing and proofreading the manuscript. The authors express their gratitude to Zh. Balgin, N. Daniyeva, and A. Rapikov from the Core Facilities at Nazarbayev University for their valuable support in performing the physical characterizations of the samples. The authors acknowledge thanks to Prof Zh. Bakenov and Dr B. Soltabayev from Nazarbayev University for providing the use of the sensor laboratory.
Funding
This work was supported by the Ministry of Education and Science of the Republic of Kazakhstan under project No. AP09258910 “Multifunctional Desulfurization Polymer Nanocomposites”, and Faculty Development Competitive Research Grant of Nazarbayev University (Project ref. No. 021220FD4551) “Crosslinked 3D Nanoporous Conducting Polymer Materials via Bicontinuous Microemulsion-based Approach”.
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The experimental framework was developed by D.K., who also carried out the synthesis of the composite materials. The researcher performed a comprehensive analysis of the gathered data about material characterization, discovering correlations between different variables. P.A. contributed to the development of the experimental configuration for conducting measurements on hydrogen gas sensors and collaborated in the composition of sections related to the interpretation of results obtained from the hydrogen detection section of the paper. A.T. actively engaged in the synthesis and production of the composite samples. The XPS data has been analyzed by V.K. M.A., R.R., and S.A. supervised the whole research. N.N. developed ways to effectively include gas sensing measurements in the analysis of the material’s structure and surface. Additionally, N.N. performed an active role in the creation of the manuscript, making substantial contributions to sections such as the Introduction, Results and discussion.
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Kanzhigitova, D., Askar, P., Tapkharov, A. et al. p-Toluenesulfonic acid doped vanadium pentoxide/polypyrrole film for highly sensitive hydrogen sensor. Adv Compos Hybrid Mater 6, 218 (2023). https://doi.org/10.1007/s42114-023-00796-0
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DOI: https://doi.org/10.1007/s42114-023-00796-0