2024-03-28T23:21:37Z
https://soar-ir.repo.nii.ac.jp/oai
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2022-12-14T04:27:33Z
1309:1310
A highly hydrophilic water-insoluble nanofiber composite as an efficient and easily-handleable adsorbent for the rapid adsorption of cesium from radioactive wastewater
Bang, Hyunsik
Watanabe, Kei
Nakashima, Ryu
Kai, Wei
Song, Kyung-Hun
Lee, Jung Soon
Gopiraman, Mayakrishnan
Kim, Ick-Soo
Herein, we report a new Prussian blue nanoparticle (PBNPs) incorporated polyvinyl alcohol (PVA) composite nanofiber (c-PBNPs/PVA) for the rapid adsorption of cesium (Cs) from radioactive wastewater. Initially, various electrospinning parameters such as solvent, PVA wt%, PBNPs wt% and glutaraldehyde (GA) wt% were extensively optimized to obtain a better physicochemical property of the c-PBNPs/PVA. In order to improve the water insoluble nature of the PVA, post cross-linking was carried out for the c-PBNPs/PVA using glutaraldehyde (GA) and HCl vapor as the cross-linker and catalyst, respectively. SEM images revealed the smooth and continuous morphology of the c-PBNPs/PVA composite nanofibers with diameters of 200–300 nm and lengths up to several millimeters. TEM images confirmed homogeneous dispersion and good incorporation of PBNPs into the PVA matrix. The amorphous nature of the c-PBNPs/PVA was confirmed by the XRD analysis. FT-IR spectra showed successful cross-linking of PVA with GA. It was found that the prepared composite nanofiber is highly hydrophilic and water-insoluble. The c-PBNPs/PVA showed an excellent and faster Cs adsorption rate of 96% after only 100 min. These results are comparable to those previously reported. After the Cs adsorption test, the c-PBNPs/PVA composite nanofiber can be easily separated from the wastewater.
Article
RSC ADVANCES. 4(103):59571-59578 (2014)
ROYAL SOC CHEMISTRY
2014
eng
journal article
AM
http://hdl.handle.net/10091/18347
https://soar-ir.repo.nii.ac.jp/records/13298
https://doi.org/10.1039/c4ra09713k
10.1039/c4ra09713k
2046-2069
RSC ADVANCES
4
103
59571
59578
https://soar-ir.repo.nii.ac.jp/record/13298/files/Highly_hydrophilic_water-insoluble_nanofiber.pdf
application/pdf
940.8 kB
2015-10-31