Abstract
The present article addresses the preparation of nanostructured scandium polyacrylamide deposited on borosilicate glass substrates of 1.0 cm × 1.0 cm × 0.2 cm dimensions to investigate the variations in the electrical parameters with adsorption/desorption of water in a controlled humidity glass chamber. Field emission scanning electron microscopy (FESEM) analysis showed that the material had spherically shaped clusters. X-ray diffraction (XRD) revealed the amorphous nature of the polymer whereas crystalline nature of the metal part in complex. Minimum particle size was reported as 2 nm by Zeta nanosizer which was further confirmed by high-resolution transmission electron microscopy (HRTEM). Energy band gap of the film was anticipated as 4.03 eV by UV–Vis spectrophotometer. Fourier transform infrared (FTIR) spectroscopy confirmed the presence of the amide group in the material’s chemistry. The film was employed as an electrical humidity sensor. Maximum sensitivity was calculated as 1.85 MΩ/%RH with ~ 96.76% reproducible results. This testing device showed the humidity response and recovery times as 24 s and 101 s, respectively.
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Acknowledgements
The authors acknowledge the USIC, BBAU, Lucknow, U.P., India and the Multiuser Analytical Center of IPCP, RAS, Russia (state registration no. AAAA-19-119041090087-4) for providing the characterization facilities.
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Gupta, L.K., Kumar, K., Sikarwar, S. et al. Frontal polymerization synthesis of scandium polyacrylamide nanomaterial and its application in humidity testing. Colloid Polym Sci 300, 191–202 (2022). https://doi.org/10.1007/s00396-021-04924-4
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DOI: https://doi.org/10.1007/s00396-021-04924-4