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MOHAMMED KHALAFALLA
Articles written in Bulletin of Materials Science
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Volume 45 All articles Published: 7 July 2022 Article ID 0128
Synthesis, characterization and optical properties of chitosan–La$_2$O$_3$ nanocomposite
AYMAN A ZAKI MOHAMMED KHALAFALLA KHADIJAH H ALHARBI KHALED D KHALIL
Chitosan-based polymeric films doped with La$_2$O$_3$ nanoparticles at various weight percentages (5, 10, 15 and 20 La$_2$O$_3$/CS) were developed by the simple solution cast transformation. The structural features of those nanocomposite films were studied by Fourier-transform infrared (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD) spectra. FTIR spectra exhibited the major characteristic signals of chitosan (CS) that were shifted noticeably as aresult of the chemical interaction with La$_2$O$_3$ molecules. SEM images exhibited a noticeable morphological variation in the surface of CS, which is attributed to surface adsorption with La$_2$O$_3$ nanoparticles. Moreover, the XRD pattern revealed that there is an obvious enhancement in the CS crystallinity upon the interaction with metal oxide nanoparticles. Refractive index as an optical parameter, energy bandgap and absorption coefficient for the CS–La$_2$O$_3$ composite wereconsidered and compared with the native CS film.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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