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Updated: Jun 17, 2026
Bridging the Bio-Electronic Interface with Biofabrication
Published on: June 6, 2012
Deep eutectic solvent-assisted hydrothermal synthesis of chitosan-based nanohybrid films functionalized with
Shephrah Olubusola Ogungbesan1, Oluwaseun Hanah Anselm2, Eduardo Buxaderas3
1School of Chemistry and Chemical Engineering, Southeast University, 2 Southeast University Road, 211189 Nanjing, P. R. China. 233189910@seu.edu.cn.
Abstract:
This study presents the fabrication and characterization of chitosan-based nanohybrid films incorporating silver-decorated tungsten oxide (Ct-AgWO3). In this work, the deep eutectic solvent-assisted hydrothermal synthesis of WO3 nanoparticles was combined with in situ silver decoration and chitosan reduction to synthesize a nanohybrid film. The effects of reaction time on the structural, morphological, and functional properties of the nanohybrid films were investigated over time. The resulting nanohybrid film was characterized using UV-vis spectroscopy, FESEM, EDX, FTIR, XPS, Raman spectroscopy, TGA, and photoluminescence. Morphological analysis revealed an evolution from clustered particulates at 30 min to better-dispersed nanoparticles after 6 h, with particle sizes between ca. 21 and 48 nm. XPS analysis of the nanofilm confirmed the presence of the W6+ oxidation state and the successful silver decoration. Moreover, the Raman spectra revealed a monoclinic WO3 crystal structure and enhanced electronic properties due to the oxygen vacancies created by Ag decoration. The degree of degradation resistance was greater than that of the chitosan-WO3 films without silver decoration, as revealed by the thermal analysis data.
