Fluorescent Nanocomposite of Embedded Ceria Nanoparticles in Crosslinked PVA Electrospun Nanofibers.
This paper introduces a new fluorescent nanocomposite of electrospun biodegradable nanofibers embedded with optical nanoparticles. In detail, this work introduces the fluorescence properties of PVA nanofibers generated by the electrospinning technique with embedded cerium oxide (ceria) nanoparticles. Under near-ultra violet excitation, the synthesized nanocomposite generates a visible fluorescent emission at 520 nm, varying its intensity peak according to the concentration ofin situembedded ceria nanoparticles. This is due to the fact that the embedded ceria nanoparticles have optical tri-valiant cerium ions, associated with formed oxygen vacancies, with a direct allowed bandgap around 3.5 eV. In addition, the impact of chemical crosslinking of the PVA on the fluorescence emission is studied in both cases of adding ceria nanoparticlesin situor of a post-synthesis addition via a spin-coating mechanism. Other optical and structural characteristics such as absorbance dispersion, direct bandgap, FTIR spectroscopy, and SEM analysis are presented. The synthesized optical nanocomposite could be helpful in different applications such as environmental monitoring and bioimaging.
Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt. nader83@vt.edu.|Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center, Alexandria University, Alexandria 21544, Egypt. nader83@vt.edu.|The Utah Science Technology and Research Agency (USTAR) Bioinnovations center, Utah State University, Logan, UT 84341, USA. nader83@vt.edu.
Nader
N
Shehata
Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center, Alexandria University, Alexandria 21544, Egypt. soha_gaballah@mena.vt.edu.|Department of Chemical Engineering, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt. soha_gaballah@mena.vt.edu.
Soha
S
Gaballah
Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center, Alexandria University, Alexandria 21544, Egypt. effat_samir@mena.vt.edu.|Department of Electrical Engineering, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt. effat_samir@mena.vt.edu.
Effat
E
Samir
Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt. aya_ali@mena.vt.edu.|Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center, Alexandria University, Alexandria 21544, Egypt. aya_ali@mena.vt.edu.
Aya
A
Hamed
Center of Smart Nanotechnology and Photonics (CSNP), SmartCI Research Center, Alexandria University, Alexandria 21544, Egypt. marwahamedo@gmail.com.|Department of Chemical Engineering, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt. marwahamedo@gmail.com.
Marwa
M
Saad
ceria nanoparticles; crosslinking; electrospinning; fluorescence; nanofibers